SiBE04-101.
SiBE04-101.book Page ii Monday, October 15, 2001 3:08 PM SiBE04-101 1. Introduction .............................................................................................v 1.1 Safety Cautions ....................................................................................... v Part 1 List of Function .................................................................1 1. Functions.................................................................................................2 1.
SiBE04-101.book Page iii Monday, October 15, 2001 3:08 PM SiBE04-101 Part 5 System Configuration.......................................................45 1. Instruction..............................................................................................46 1.1 FTXD50 / 60 / 71J ................................................................................. 46 1.2 FLX50 / 60J ........................................................................................... 65 Part 6 Service Diagnosis..
SiBE04-101.book Page iv Monday, October 15, 2001 3:08 PM SiBE04-101 Part 7 Removal Procedure ........................................................129 1. For RXD50·60·71J ..............................................................................130 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Removal of Outer Panels and Fan Motor ............................................ 130 Removal of Electrical Box.................................................................... 134 Removal of Partition Board and Reactor ..
SiBE04-101.book Page v Monday, October 15, 2001 3:08 PM SiBE04-101 Introduction 1. Introduction 1.1 Safety Cautions Cautions and Warnings 1.1.1 Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
SiBE04-101.book Page vi Monday, October 15, 2001 3:08 PM Introduction SiBE04-101 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
SiBE04-101.book Page vii Monday, October 15, 2001 3:08 PM SiBE04-101 Introduction Warning When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable. If the cover is not mounted properly, the terminal connection section can cause an electrical shock, excessive heat generation or fire. Do not damage or modify the power cable. Damaged or modified power cable can cause an electrical shock or fire.
SiBE04-101.book Page viii Monday, October 15, 2001 3:08 PM Introduction SiBE04-101 Caution If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury. Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock. Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 Mohm or higher.
SiBE04-101.book Page 1 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 1 List of Function 1. Functions.................................................................................................2 1.1 List of Functions .....................................................................................
SiBE04-101.book Page 2 Monday, October 15, 2001 3:08 PM Functions SiBE04-101 1.
SiBE04-101.book Page 3 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 2 Specifications 1. Specifications ..........................................................................................4 1.1 Wall Mounted Type.................................................................................. 4 1.2 Floor / Ceiling Suspended Dual Type......................................................
SiBE04-101.book Page 4 Monday, October 15, 2001 3:08 PM Specifications SiBE04-101 1. Specifications 1.1 Wall Mounted Type 230V, 50Hz Indoor Units Models Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
SiBE04-101.book Page 5 Monday, October 15, 2001 3:08 PM SiBE04-101 Specifications 230V, 50Hz Indoor Units Models Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
SiBE04-101.book Page 6 Monday, October 15, 2001 3:08 PM Specifications 1.2 SiBE04-101 Floor / Ceiling Suspended Dual Type 230V 50Hz Indoor Units Models Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
SiBE04-101.book Page 7 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram and Name ..................8 1.1 1.2 1.3 1.4 1.5 Name of Connectors for Indoor Unit........................................................ 8 FTXD50 / 60 / 71J Series ........................................................................ 9 FLX50 / 60J Series .............................................................................
SiBE04-101.book Page 8 Monday, October 15, 2001 3:08 PM Printed Circuit Board Connector Wiring Diagram and Name SiBE04-101 1. Printed Circuit Board Connector Wiring Diagram and Name 1.
SiBE04-101.book Page 9 Monday, October 15, 2001 3:08 PM SiBE04-101 Printed Circuit Board Connector Wiring Diagram and Name 1.2 FTXD50 / 60 / 71J Series 1.2.1 Control PCB Detail (PCB 1) PCB is common for both wall mounted type and floor/ceiling suspended dual type except for the connectors which are different in their mating plug.
SiBE04-101.book Page 10 Monday, October 15, 2001 3:08 PM Printed Circuit Board Connector Wiring Diagram and Name 1.2.2 Power Supply PCB Detail (PCB 2) 1.2.3 Display PCB Detail (PCB 3) 1.2.
SiBE04-101.book Page 11 Monday, October 15, 2001 3:08 PM SiBE04-101 Printed Circuit Board Connector Wiring Diagram and Name 1.3 FLX50 / 60J Series 1.3.1 Control PCB (PCB 1) Refer to 1.2.1 1.3.
SiBE04-101.book Page 12 Monday, October 15, 2001 3:08 PM Printed Circuit Board Connector Wiring Diagram and Name 1.3.3 Display PCB Detail (PCB 3) 1.3.
SiBE04-101.book Page 13 Monday, October 15, 2001 3:08 PM SiBE04-101 1.
SiBE04-101.book Page 14 Monday, October 15, 2001 3:08 PM Printed Circuit Board Connector Wiring Diagram and Name 1.5 RXD50 / 60 / 71J Series 1.5.
SiBE04-101.book Page 15 Monday, October 15, 2001 3:08 PM SiBE04-101 1.5.
SiBE04-101.
SiBE04-101.book Page 17 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 4 Main Function 1. General Functions.................................................................................18 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 Main Function Functions of Thermistors ....................................................................... 18 Operating Modes ...............................................................................
SiBE04-101.book Page 18 Monday, October 15, 2001 3:08 PM General Functions SiBE04-101 1. General Functions 1.1 Functions of Thermistors Location of the Thermistors The thermistors on the drawing below are used to control the system.
SiBE04-101.book Page 19 Monday, October 15, 2001 3:08 PM SiBE04-101 1.2 General Functions Operating Modes Modes There are two operating modes: Normal operating mode Forced operating mode Overview The following table shows the different control modes of the Split inverter room air conditioners: Mode Normal Operating Mode Item Auto (Heat pump only) Cooling Dry keep Heating (Including Automatic defrost, for Heat pump only) Fan (Cooling only) Stop mode: Pre-heat operation.
SiBE04-101.book Page 20 Monday, October 15, 2001 3:08 PM General Functions 1.3 SiBE04-101 Frequency Principle Main Control Parameters The compressor is frequency-controlled during normal operation.
SiBE04-101.book Page 21 Monday, October 15, 2001 3:08 PM SiBE04-101 1.4 General Functions Defrost Control Principle When frost deposit on the outdoor heat exchanger has increased in heating operation, change the operation from heating cycle to cooling cycle for defrosting.
SiBE04-101.book Page 22 Monday, October 15, 2001 3:08 PM General Functions SiBE04-101 Time Chart C Hz Defrost ON Compressor operation frequency Defrost OFF 108Hz B Hz 90Hz 80Hz A Hz 76Hz 35min. 4-way valve 60sec. 60sec. 50sec. 280sec. 80sec. 180sec. 300sec. 150min. 60sec. Cool Warm 3sec. 3sec. Fan ON OFF 450Pls 450Pls 400Pls EVpulse (R1016) Stop Conditions Defrost control is ended by the conditions as follows: When the maximum time elapses.
SiBE04-101.book Page 23 Monday, October 15, 2001 3:08 PM SiBE04-101 General Functions 1.5 Forced Operation Mode 1.5.1 J type Operation by the Operation Buttons Provided at the Unit or the Remote Controller Item Conditions Starting procedure, operating condition Forced cooling 1. Keep pushing the operation switch of the indoor unit for 5 to 10 seconds. 2. Change the remote controller setting to a cooling test operation.
SiBE04-101.book Page 24 Monday, October 15, 2001 3:08 PM General Functions SiBE04-101 1.6 Flap Control 1.6.1 Wall Mounted J Type Wide-angle Flap The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Diffuser In heating operation, it supports the function of the large flap and diffuses more warm air down to the floor. Heating Mode During heating mode, the large flap enables direct warm air straight downwards.
SiBE04-101.book Page 25 Monday, October 15, 2001 3:08 PM SiBE04-101 General Functions Details of the Action It can be commanded for J type by means of a user setting to select either any one desired position among the five-step directions of air flow adjusted on a remote controller, or Auto-swing.
SiBE04-101.book Page 26 Monday, October 15, 2001 3:08 PM General Functions 1.6.2 SiBE04-101 Floor / Ceiling Suspended Dual Type Details of the Action Caution The direction of airflow in horizontal swing can be set in auto mode or in any position by remote controller. Set the direction of airflow by swing motion stopping operation at a position at which user want to stop the motion while watching the flap.
SiBE04-101.book Page 27 Monday, October 15, 2001 3:08 PM SiBE04-101 1.7 General Functions Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. Phase Steps Phase control and fan speed control contains 8 steps: LLL, LL, L, ML, M, MH, H and HH.
SiBE04-101.book Page 28 Monday, October 15, 2001 3:08 PM General Functions 1.8 SiBE04-101 Fan Speed Control for Outdoor Units Outline DC motor is adopted for the outdoor fan, the rotating speed is controlled depending on the condition. In outdoor unit silent operation, the rotating speed is changed further.
SiBE04-101.book Page 29 Monday, October 15, 2001 3:08 PM SiBE04-101 1.9 General Functions Outdoor Unit Silent Operation Outline This air conditioner is provided with a switch to prevent next-door neighbors from annoyance of operation noise when it is installed in a heavily built-up area. (The indoor air volume is left as set by user for measure not to annoy neighbors.) Details of the Action 1.
SiBE04-101.book Page 30 Monday, October 15, 2001 3:08 PM General Functions 1.10 SiBE04-101 General Functions Pre-heat Operation When the equipment has stopped and t [outside] < 4˚C, the compressor is warmed-up by passing a singlephase (U, V phase) current through the compressor motor to speed up the start. The power consumption is 50~60W.
SiBE04-101.book Page 31 Monday, October 15, 2001 3:08 PM SiBE04-101 General Functions The frequency command for every zone is stated below. (Please note that an operation will not carry out in the commanded frequency sometimes in case a protection control like a freeze-protection etc. will be actuated.) Room temperature Command frequency Room temp. zone Room temp. < 18˚C 50 Class 60 Class A 0 Hz 0 Hz 0 Hz except A 32 Hz 28 Hz 28 Hz Room temp.
SiBE04-101.book Page 32 Monday, October 15, 2001 3:08 PM General Functions 1.11 SiBE04-101 Inverter Powerful Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the Control When the powerful operation switch is pressed in each operation mode, the fan rotating speed and set temperature become as follows for 20 min.
Part4.fm Page 33 Thursday, October 18, 2001 2:21 PM SiBE04-101 1.12 General Functions Home Leave Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided. (This function responds also to the need for keeping up with weak cooling or heating.
SiBE04-101.book Page 34 Monday, October 15, 2001 3:08 PM General Functions 1.13 SiBE04-101 Automatic Operation Outline To maintain the set temperature and set air volume, the operation of air conditioner is switched automatically to cooling or heating within the differentials as follows. Only the heat pump type model is equipped with this function. Details of the Function 1. Remote controller setting temperature is set as automatic cooling / heating setting temperature (18 to 30˚C). 2.
SiBE04-101.book Page 35 Monday, October 15, 2001 3:08 PM SiBE04-101 1.14 General Functions Input Current Control Outline The frequency control will be carried out so that the input current will not exceed the rated value in the zone which is divided by the input current detected with CT as the figure below shows. Compressor stops. Stop zone I4 I4 = 18.
SiBE04-101.book Page 36 Monday, October 15, 2001 3:08 PM General Functions 1.15 SiBE04-101 Freeze up Prevention Function in Cooling Outline During Cooling/Dry operation, when the heat exchanger’s temperature falls down excessively, the capacity supply will be reduced (frequency step down) so as to prevent freeze of the heat exchanger and the creation of dew on a rotor caused by a excessive capacity supply to the indoor unit.
SiBE04-101.book Page 37 Monday, October 15, 2001 3:08 PM SiBE04-101 1.16 General Functions Peak-Cut Control Function Outline In a heating operation, there will be anxiety that a head pressure excessively increases and exceeds the permissible limit in an over load conditions.
SiBE04-101.book Page 38 Monday, October 15, 2001 3:08 PM General Functions 1.17 SiBE04-101 4-Way Valve Function Compensation Outline When the initial start of compressors is required after power is on or at operation mode’s alteration (Cooling/Dry ↔ Heating) that the a switch-over of a 4-way valve takes place, it secures the necessary differential pressure by restricting the operation frequency in the lower limit in a certain period, and the switch-over action is ensured.
SiBE04-101.book Page 39 Monday, October 15, 2001 3:08 PM SiBE04-101 1.18 General Functions Compressor Protection Function Outline An refrigeration oil level descent and progression of the dilution which will arise at operation of the compressors will be avoided by controlling the upper limit of frequency at the edge of compressor’s changeover from OFF to ON as follows. Processing Compressor operation frequency F CG3 F CG2 F CG1 T CG1 T CG2 T CG3 Compressor ON time (R1043) 1.
SiBE04-101.book Page 40 Monday, October 15, 2001 3:08 PM General Functions 1.19 SiBE04-101 Wet Operation Protection I (Securing of Differential Pressure and Blown Air Temperature) Outline To secure the reliability of the compressor (for dryness of suction refrigerant and differential pressure) which is the primary purpose of the compressor, the lower limit of the output frequency is limited to two stages under the condition of outside air temperature.
SiBE04-101.book Page 41 Monday, October 15, 2001 3:08 PM SiBE04-101 1.20 General Functions Wet Operation Protection II (Protection from Differential Pressure) Outline Differential pressure generated in low-temperature outside air-cooling operation is secured, and when the differential pressure is lowered below the standard value, the operation of the compressor is once stopped for protection. Processing Cooling or dry mode Compressor is in operation.
SiBE04-101.book Page 42 Monday, October 15, 2001 3:08 PM General Functions 1.21 SiBE04-101 Dew Prevention Function Outline During Cooling/Dry operation, when the heat exchanger’s temperature falls down excessively, the capacity supply will be reduced (frequency step down) so as to prevent dew formation around a discharge grille caused by a excessive capacity supply to an indoor unit. Processing 1. Conditions of beginning/ending for this function. Operation mode is in Cooling/Dry.
SiBE04-101.book Page 43 Monday, October 15, 2001 3:08 PM SiBE04-101 1.22 General Functions Setting for Long Piping Outline When the piping length exceeds 10 meters, the target discharge pipe temperature is calculated at a lower level due to pressure loss in the piping system.
SiBE04-101.book Page 44 Monday, October 15, 2001 3:08 PM General Functions 1.23 Outline SiBE04-101 On-site Setting Jumper Wire It is necessary to provide the specifications which may be required for the measures to be taken according to the local circumstances of the installation site. If necessary, such specifications can be adopted easily by cutting the jumper wire provided on the PCB of outdoor unit. 1.
SiBE04-101.book Page 45 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 5 System Configuration 1. Instruction..............................................................................................46 1.1 FTXD50 / 60 / 71J ................................................................................. 46 1.2 FLX50 / 60J ...........................................................................................
SiBE04-101.book Page 46 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 1. Instruction 1.1 FTXD50 / 60 / 71J Safety Precautions ■ Read the following warnings and cautions carefully before operating the system and use it correctly. ■ This manual classifies the precautions to the user into two categories on the right. Be sure to follow all as they are all important to ensure safety. ■ After reading this manual, keep it in a place easily accessible to the user for future reference.
SiBE04-101.book Page 47 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction ● Do not stand or sit on the outdoor unit. Do not place any object on the unit. The object or the person may fall down or drop, causing injury. ● Do not place under the indoor or outdoor unit anything which must be kept away from moisture. Indoor unit : moisture in the air may condense and drip in certain conditions. outdoor : during cooling operation, condensation may drip from the piping connections.
SiBE04-101.book Page 48 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Installation site ■ To install the air conditioner in the following types of environments, consult the shop. ● Places with an oily ambient or where steam or soot occurs. ● Salty environment such as coastal areas. ● Places where sulfide gas occurs such as hot springs. ● Places where snow may block the outdoor unit. The drain from the outdoor unit must be discharged to a place of good drainage.
SiBE04-101.book Page 49 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Names of Parts Indoor unit Air purifying filter Air inlet Air purifying filters are attached to the inside of the air filters. Front grille Grille tab Diffuser Air filter Air outlet Louvre (vertical blades) Flap (Horizontal blade) The louvre is inside of the air outlet. (See page 11.) (See page 11.) Indicator lamps HOME LEAVE lamp (red) • Lights up when you use HOME LEAVE Operation. (See page 13.
SiBE04-101.book Page 50 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Names of Parts Remote controller Open the cover. Transmitter It sends signals to the indoor unit. ON/OFF button ON/OFF Display It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) TEMP TIME DOWN TEMPERATURE / TIME adjustment buttons UP It changes the temperature or time setting.
SiBE04-101.book Page 51 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Names of Parts Outdoor unit Refrigerant piping and inter-unit cable Air inlet (Back and side) Drain hose Earth terminal It is inside of this part. Air outlet Appearance of the outdoor unit may differ from some models. Refrigerant piping and inter-unit cable Air inlet (Back and side) Drain hose Earth terminal It is inside of this part.
SiBE04-101.book Page 52 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Preparation Before Operation ■ Operating the remote controller Remote controller ● To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. ● Do not drop the remote controller. Do not get it wet. ● The maximum distance for communication is about 7 m.
SiBE04-101.book Page 53 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Preparation Before Operation Indoor unit ■ Setting the air purifying filters ■ Setting the clock 1 1 Open the front grille. Press . ● Hold the grille by the tabs on the two sides and lift it until it stops with a click. (about 60˚) is displayed. blinks. ûC 2 2 Pull out the air filters. to set the clock to the Press present time. ● Push upwards the tab at the center of each air filter, then pull it down.
SiBE04-101.book Page 54 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 AUTO • DRY • COOL • HEAT Operation The air conditioner operates with the settings of your choice. From the next time on, the air conditioner will operate with the same settings. FAN . and select a mode. COOL mode Five levels of air flow rate setting The air flow rate ” are from “ ” to “ ”plus “ setting is not available. variable.
SiBE04-101.book Page 55 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Adjusting the Air Flow Direction Notes on flap angles You can adjust the air flow direction to increase your comfort. ● When [SWING] is selected, the flap swinging range depends on the operation mode. (See the figure.) ● When [SWING] is selected in heating operation, the flap and the diffuse swing up and down in combination. ● The diffuser is kept open in DRY or COOL mode. Adjusting the horizontal blade (flap) Press .
SiBE04-101.book Page 56 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 OUTDOOR UNIT SILENT Operation POWERFUL Operation POWERFUL operation quickly maximizes the OUTDOOR UNIT SILENT operation lowers the cooling (heating) effect in any operation mode. You can get the maximum capacity with a touch noise-level of the outdoor unit by changing the frequency and fan rpm on the outdoor unit. of a button. This function is convenient when sleeping, etc.
SiBE04-101.book Page 57 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction HOME LEAVE Operation HOME LEAVE operation function is useful when you leave the house or the room. How to use HOME LEAVE Operation ∗ This function is only available in COOL and ■ How to set the temperature and air flow rate. 1 Press 2 Adjust the set temperature with HEAT modes. as you like. ■ To use the “HOME LEAVE Operation” Press . 3 Adjust the air flow rate setting with FAN as you like.
SiBE04-101.book Page 58 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 HOME LEAVE Operation ■ Useful at times like these! 1 Every day before you leave the house... When you go out, push the “HOME LEAVE Operation” button, and the air conditioner will adjust capacity to reach the preset temperature for HOME LEAVE Operation. When you return, you will be welcomed by a comfortably air conditioned room.
SiBE04-101.book Page 59 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Timer Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. OFF TIMER operation ON TIMER operation ● Check that the clock is correct. If not, set the clock to the present time (See page 9). 1 ● Check that the clock is correct. If not, set the clock to the present time. (See page 9.
SiBE04-101.book Page 60 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Care and Cleaning Cleaning the indoor and outdoor units and the remote controller CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. ● Wipe them with dry soft cloth. For cleaning, do not use water hotter than 40˚C, benzine, gasoline, thinner, nor other volatile oils, polishing compound, scrubbing brushes nor other hard stuff.
SiBE04-101.book Page 61 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Care and Cleaning Check Cleaning the front grille You may remove the front grille for cleaning. CAUTION ● When removing or attaching the front grille, use a robust and stable stool and watch your steps carefully. ● When removing or attaching the front grille, support the grille securely with hand to prevent it from falling.
SiBE04-101.book Page 62 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Troubleshooting ● These cases are no troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Operation does not start soon. ● When ON/OFF button was pressed Explanation ● This is to protect the air conditioner. You should wait for about 3 minutes. soon after operation was stopped. ● When the mode was reselected.
SiBE04-101.book Page 63 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Troubleshooting ● Check again Please check again before calling a repair person. Case Check The air conditioner does not ● Hasn’t a breaker turned OFF or a fuse blown? operate. ● Isn’t it a power failure? (OPERATION lamp is off) ● Are batteries set in the remote controller? ● Is the timer setting correct? Cooling or Heating effect is ● Are the air filters clean? poor.
SiBE04-101.book Page 64 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Troubleshooting ● Call the service shop immediately. WARNING ■ When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. ■ Do not attempt to repair or modify the air conditioner by yourself.
SiBE04-101.book Page 65 Monday, October 15, 2001 3:08 PM SiBE04-101 1.2 Instruction FLX50 / 60J Names of Parts Indoor unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this manual show the case when installation is being carried out to the ceiling. (The methods of operation used are the same when installing to a wall.) Flap (Horizontal blade) Air outlet Louvre (Vertical blade) (See page 11 “Adjusting the Air Flow Direction”.
SiBE04-101.book Page 66 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Names of Parts Remote controller Open the cover. Transmitter It sends signals to the indoor unit. Display TEMPERATURE adjustment button It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) It changes the temperature setting. ON C ON/OFF button AMPM Press it once to start operation. To stop it, press it once again.
SiBE04-101.book Page 67 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Names of Parts Outdoor unit Refrigerant piping and inter-unit cable Air inlet (Back and side) Drain hose Earth terminal It is inside of this part. Air outlet Appearance of the outdoor unit may differ from some models.
SiBE04-101.book Page 68 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Preparation Before Operation ■ Operating the remote controller Remote controller ● To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. ● Do not drop the remote controller. Do not get it wet. ● The maximum distance for communication is about 7 m.
SiBE04-101.book Page 69 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Preparation Before Operation Indoor unit ■ Setting the air purifying filters ■ Setting the clock ● When opening the front grille, use a robust and stable stool and watch your steps carefully. 1 . Open the front grille. ● Hold the grille by the tabs on the two sides and pull it until it stops. Display 1 Press AM is displayed. AM blinks. O N OFF 2 3 TEMP Pull out the air filters.
SiBE04-101.book Page 70 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 AUTO • DRY • COOL • HEAT Operation Press FAN . DRY mode Press and select a mode. MODE AUTO or HEAT or COOL mode Five levels of air flow rate setting from The air flow rate setting is not variable. Display 1 ■ To change the air flow rate setting: “ ” to “ ”plus “ ” are available. ● Each pressing of the button advances the mode setting in sequence.
SiBE04-101.book Page 71 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. NOTE ● Unless [SWING] is selected, you should set the flap at a near- horizontal angle in COOL or DRY mode to obtain the best performance.
SiBE04-101.book Page 72 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity with a touch of a button. OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise-level of the outdoor unit by changing the frequency and fan rpm on the outdoor unit. This function is convenient when sleeping, etc.
SiBE04-101.book Page 73 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction HOME LEAVE Operation HOME LEAVE operation function is useful when you leave the house or the room. How to use HOME LEAVE Operation ∗ This function is only available in COOL and HEAT modes. ■ To use the “HOME LEAVE Operation” ■ How to set the temperature and air flow rate. Press 2 Adjust the set temperature with Press . TEMP as you like.
SiBE04-101.book Page 74 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 HOME LEAVE Operation n Useful at times like these! 1 Every day before you leave the house... When you go out, push the “ HOME LEAVE Operation ” button, and the air conditioner will adjust capacity to reach the preset temperature for HOME LEAVE Operation. When you return, you will be welcomed by a comfortably air conditioned room.
SiBE04-101.book Page 75 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Timer Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. OFF TIMER operation ON TIMER operation ● Check that the clock is correct. If not, set the clock to the present time (See page 9). 1 Press ON while the air conditioner is not operating. Display ● Check that the clock is correct.
SiBE04-101.book Page 76 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Care and Cleaning Cleaning the indoor and outdoor units and the remote controller CAUTION ●Before cleaning, be sure to stop the operation and turn the breaker OFF. ●When opening the front grille, use a robust and stable stool and watch your steps carefully. ● Wipe them with dry soft cloth.
SiBE04-101.book Page 77 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Care and Cleaning Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
Part5.fm Page 78 Thursday, October 18, 2001 2:21 PM Instruction SiBE04-101 Troubleshooting ● These cases are no troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Operation does not start soon. ● When ON/OFF button was pressed Explanation ● This is to protect the air conditioner. You should wait for about 3 minutes. soon after operation was stopped. ● When the mode was reselected.
SiBE04-101.book Page 79 Monday, October 15, 2001 3:08 PM SiBE04-101 Instruction Troubleshooting ● Check again Please check again before calling a repair person. Case Check The air conditioner does not ● Hasn’t a breaker turned OFF or a fuse blown? operate. ● Isn’t it a power failure? (OPERATION lamp is off) ● Are batteries set in the remote controller? ● Is the timer setting correct? Cooling or Heating effect is ● Are the air filters clean? poor.
SiBE04-101.book Page 80 Monday, October 15, 2001 3:08 PM Instruction SiBE04-101 Troubleshooting ● Call the service shop immediately. WARNING ■ When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. ■ Do not attempt to repair or modify the air conditioner by yourself.
SiBE04-101.book Page 81 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 6 Service Diagnosis 1. Caution for Diagnosis............................................................................82 1.1 Troubleshooting with the Operation Lamp............................................. 82 1.2 Troubleshooting with the LED Indication ............................................... 83 2. Problem Symptoms and Measures .......................................................84 3. Service Check Function .........
SiBE04-101.book Page 82 Monday, October 15, 2001 3:08 PM Caution for Diagnosis SiBE04-101 1. Caution for Diagnosis 1.1 Troubleshooting with the Operation Lamp The Operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2. When a signal transmission error occurs between the indoor and outdoor units.
SiBE04-101.book Page 83 Monday, October 15, 2001 3:08 PM SiBE04-101 1.2 Caution for Diagnosis Troubleshooting with the LED Indication There are green and red LEDs on the PCB. The flashing green LED indicates normal equipment condition, and the OFF condition of the red LED indicates normal equipment condition. (Troubleshooting with the green LED) The LED A of the outdoor unit indicate microcomputer operation condition.
SiBE04-101.book Page 84 Monday, October 15, 2001 3:08 PM Problem Symptoms and Measures SiBE04-101 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure None of The Units Operates. Check the power supply. Check to make sure that the rated voltage is supplied. — Check the type of the indoor units. Check to make sure that the indoor unit type is compatible with the outdoor unit. — Check the outside air temperature.
SiBE04-101.book Page 85 Monday, October 15, 2001 3:08 PM SiBE04-101 Service Check Function 3. Service Check Function 3.1 ARC417 Series In the ARC417A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. < Cover in open position > 2. Press the timer cancel button repeatedly until a continuous beep is produced.
SiBE04-101.book Page 86 Monday, October 15, 2001 3:08 PM Service Check Function 3.2 SiBE04-101 ARC423 Series In the ARC423A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. < Cover in open position > Open the cover. Display Transmitter It displays the current settings.
SiBE04-101.book Page 87 Monday, October 15, 2001 3:08 PM SiBE04-101 Troubleshooting 4. Troubleshooting 4.1 Indoor Units - : Not used for troubleshooting ∗ : Varies depending on the cases. Indication on the remote controller Description of the Fault 00 OR ∗ Details of fault (Refer to the indicated page.) Indoor unit in normal condition (Conduct a diagnosis of the outdoor unit.
SiBE04-101.book Page 88 Monday, October 15, 2001 3:08 PM Troubleshooting 4.2 SiBE04-101 Outdoor Units 4: ON, 1: OFF, 5: Blinks Green: Flashes when in normal condition Red: OFF in normal condition - : Not used for troubleshooting ∗ : Varies depending on the cases.
SiBE04-101.book Page 89 Monday, October 15, 2001 3:08 PM SiBE04-101 4.3 Troubleshooting Faulty PCB Remote Controller Display A1 Indoor unit LED Display Method of Malfunction Detection Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Decision Conditions When there is no zero-cross detection in approximately 10 continuous seconds.
SiBE04-101.book Page 90 Monday, October 15, 2001 3:08 PM Troubleshooting 4.
SiBE04-101.book Page 91 Monday, October 15, 2001 3:08 PM SiBE04-101 4.5 Troubleshooting Operation Halt Due to Fan Motor (DC Motor) or Related Abnormality [Wall Mounted Type] Remote Controller Display A6 Indoor unit LED Display Method of Malfunction Detection The rotation speed detected by the hall IC during fan motor operation in high voltage is used to determine abnormal fan motor operation.
SiBE04-101.book Page 92 Monday, October 15, 2001 3:08 PM Troubleshooting SiBE04-101 Troubleshooting Caution Check No.35 Rerer to P.127 Check No.37 Rerer to P.127 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Rotate the fan by hand Does it rotate smoothly? NO Replace the fan motor. YES Operate the fan. Does it rotate? NO 1 Remove the fan motor's connector S201 to operate.
SiBE04-101.book Page 93 Monday, October 15, 2001 3:08 PM SiBE04-101 4.6 Troubleshooting Operation Halt Due to Fan Motor (AC Motor) or Related Abnormality (Floor / Ceiling Suspended Dual Type). Remote Controller Display A6 Indoor unit LED Display Method of Malfunction Detection The rotation speed detected by the hall IC during fan motor operation is used to determine abnormal fan motor operation.
SiBE04-101.book Page 94 Monday, October 15, 2001 3:08 PM Troubleshooting 4.7 SiBE04-101 Operation Halt Due to Detection of Thermistor or Related Abnormality Remote Controller Display C4, C9, CA Indoor unit LED Display Method of Malfunction Detection The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Decision Conditions When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation∗.
SiBE04-101.book Page 95 Monday, October 15, 2001 3:08 PM SiBE04-101 4.8 Troubleshooting Faulty Indoor Unit PCB Remote Controller Display ∗ Indoor unit LED Display Method of Malfunction Detection The proper program operation of the microcomputer is checked by the program. Malfunction Decision Conditions When the microcomputer program does not function properly. Supposed Causes Microcomputer program is in abnormal condition due to an external factor. ∗Noise. ∗Momentary voltage drop.
SiBE04-101.book Page 96 Monday, October 15, 2001 3:08 PM Troubleshooting 4.9 SiBE04-101 Faulty Indoor Unit PCB Remote Controller Display ∗ Indoor unit LED Display Method of Malfunction Detection The condition of the transmission circuit for indoor-outdoor signal transmission is detected. Malfunction Decision Conditions When the transmission circuit remains ON.
SiBE04-101.book Page 97 Monday, October 15, 2001 3:08 PM SiBE04-101 4.10 Troubleshooting Power Supply Abnormalities or Faulty Indoor PCB Remote Controller Display ∗ or U4 Indoor unit LED Display Method of Malfunction Detection 1. The proper program operation of the microcomputer is checked by the program. 2. In indoor-outdoor signal communications, the indoor unit determines whether the outdoor unit receives signals properly by detecting signals transmitted by the outdoor unit to the indoor unit.
SiBE04-101.book Page 98 Monday, October 15, 2001 3:08 PM Troubleshooting 4.11 SiBE04-101 Signal Transmission Error (between Indoor and Outdoor Units) Remote Controller Display U4 Indoor unit LED Display Method of Malfunction Detection The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Decision Conditions When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal.
SiBE04-101.book Page 99 Monday, October 15, 2001 3:08 PM SiBE04-101 4.12 Troubleshooting Faulty Indoor / Outdoor Power Supply Specification Remote Controller Display UA Indoor unit LED Display Method of Malfunction Detection The indoor/outdoor unit data communication signal is used to detect different power specifications (connection of indoor power receiving unit and outdoor power receiving unit).
SiBE04-101.book Page 100 Monday, October 15, 2001 3:08 PM Troubleshooting 4.13 SiBE04-101 Operation Halt Due to High Pressure Control for Cooling Operation Remote Controller Display A5 Outdoor unit LED Display A5 14 23 34 44 Method of Malfunction Detection During cooling operation, the temperature detected by the defrost thermistor is used for the high pressure control (stop, frequency drooping, etc.).
SiBE04-101.book Page 101 Monday, October 15, 2001 3:08 PM SiBE04-101 4.14 Troubleshooting Operation Halt Due to Discharge Pipe Temperature Control Remote Controller Display F3 Outdoor unit LED Display A5 14 23 34 43 Method of Malfunction Detection The discharge pipe temperature detected by the discharge pipe thermistor is used for discharge pipe temperature control (stop or frequency step down control) .
SiBE04-101.book Page 102 Monday, October 15, 2001 3:08 PM Troubleshooting 4.15 SiBE04-101 Interrupt Due to OL Action or Thermal Fuse Blow-Out Remote Controller Display E5 Outdoor unit LED Display A5 Method of Malfunction Detection OL action detected by the opening of OL contact. Thermal fuse blown out. Malfunction Decision Conditions If an OL action (opening) or thermal fuse blowout signal has come from the OL action or thermal fuse detection circuit to the microcomputer.
SiBE04-101.book Page 103 Monday, October 15, 2001 3:08 PM SiBE04-101 Troubleshooting Troubleshooting Caution Check No.15 Refer to P.123 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check continuity between contacts using a tester. Is there continuity (with system shut down and compressor cool down)? NO Replace the OL. YES Check connection of the OL connector. Is the connector tight? NO Reconnect the OL connector.
SiBE04-101.book Page 104 Monday, October 15, 2001 3:08 PM Troubleshooting 4.16 SiBE04-101 Compressor Seizing Remote Controller Display E6 Outdoor unit LED Display A5 13 Method of Malfunction Detection Uses a position detection signal which is generated when a compressor lock occurs. Compressor rotating condition detected by position detection sensor Malfunction Decision Conditions When a compressor lock judgment is made and the operation stops due to overcurrent.
SiBE04-101.book Page 105 Monday, October 15, 2001 3:08 PM SiBE04-101 4.17 Troubleshooting DC Fan Seizing Remote Controller Display E7 Outdoor unit LED Display A5 14 24 34 44 Method of Malfunction Detection The number of revolutions detected by the detection circuit during fan motor operation is used to detect fan motor abnormalities. Malfunction Decision Conditions When the fan does not operate within 30 seconds after fan motor operation conditions are met.
SiBE04-101.book Page 106 Monday, October 15, 2001 3:08 PM Troubleshooting 4.18 SiBE04-101 Operation Halt Due to Detection of Input Over Current Remote Controller Display ∗ or E8 Outdoor unit LED Display A5 13 24 33 Method of Malfunction Detection Input over current is checked using the input current detected by the CT during compressor operation. Malfunction Decision Conditions When the CT input remains above the value shown in the below table for 2.5 seconds during compressor operation.
SiBE04-101.book Page 107 Monday, October 15, 2001 3:08 PM SiBE04-101 Troubleshooting Troubleshooting ∗ Internal wiring errors can cause an input over current. If the equipment stops due to an input over current after the wires are disconnected and connected again for parts replacement, etc., check for wiring errors. Caution Check No.14 Refer to P.122 Check No.13 Refer to P.121 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
SiBE04-101.book Page 108 Monday, October 15, 2001 3:08 PM Troubleshooting 4.19 SiBE04-101 Operation Halt Due to Position Detection Sensor Remote Controller Display H6 Outdoor unit LED Display A5 14 Method of Malfunction Detection The position detection unit of electrical parts is used to confirm the compressor rotation information for the detection of compressor startup failures.
SiBE04-101.book Page 109 Monday, October 15, 2001 3:08 PM SiBE04-101 4.20 Troubleshooting Operation Halt Due to Detection of CT Error Remote Controller Display H8 Outdoor unit LED Display A5 14 24 33 43 Method of Malfunction Detection CT errors are detected using the compressor's operating frequency and the input current detected by the CT. Malfunction Decision Conditions When the compressor's operating frequency is more than 56 Hz and the CT input is less than 0.1 V. ∗ Input current 0.
SiBE04-101.book Page 110 Monday, October 15, 2001 3:08 PM Troubleshooting 4.21 SiBE04-101 Output Overcurrent Remote Controller Display L5 Outdoor unit LED Display A5 13 23 34 43 Method of Malfunction Detection Detection of output overcurrent based on current flowing in DCCT. (Inverter direct current part) Malfunction Decision Conditions Detection of abnormal position signal during compressor operation. Detection of abnormal speed during compressor operation.
SiBE04-101.book Page 111 Monday, October 15, 2001 3:08 PM SiBE04-101 Troubleshooting Check No.14 Refer to P.122 Troubleshooting ∗ Erroneous internal wiring can result in output overcurrent in some cases. If system stops due to output overcurrent after parts replacement that requires disconnection of wires, check wiring carefully Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is stop valve fully open? Check No.13 Refer to P.
SiBE04-101.book Page 112 Monday, October 15, 2001 3:08 PM Troubleshooting 4.22 SiBE04-101 Operation Halt Due to Thermistor Error or Disconnection Detection Remote Controller Display J3, J6, H9 Outdoor unit LED Display A5 14 24 Method of Malfunction Detection Thermistor errors are detected using thermistor input voltage to micro computor. (Thermistor errors are detected using the temperatures detected by the thermistors.
SiBE04-101.book Page 113 Monday, October 15, 2001 3:08 PM SiBE04-101 4.23 Troubleshooting Operation Halt Due to Detection of Insufficient Gas Remote Controller Display U0 Outdoor unit LED Display A5 13 23 34 44 Method of Malfunction Detection Detection method 1 Gas shortage is detected by the temperature of the discharge pipe which is detected by the discharge pipe thermistor and the opening of the electromagnetic valve.
SiBE04-101.book Page 114 Monday, October 15, 2001 3:08 PM Troubleshooting SiBE04-101 Troubleshooting Caution Check No.20 Refer to P.125 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is any thermistor disconnected? YES NO Check No.1 Refer to P.119 Is stop valve opened? Insert in the specified position. Especially the discharge pipe thermistor, indoor, outdoor air temperature thermistor. Closed Open stop valve.
SiBE04-101.book Page 115 Monday, October 15, 2001 3:08 PM SiBE04-101 4.24 Troubleshooting Detection of Low Voltage (LVP) Remote Controller Display U2 Outdoor unit LED Display A5 14 Method of Malfunction Detection Abnormal voltage decrease in the DC section. Malfunction Decision Conditions When an low voltage signal is sent from the low voltage detection circuit to the microcomputer. The system shuts down after low voltage is detected 255 times.
SiBE04-101.book Page 116 Monday, October 15, 2001 3:08 PM Troubleshooting 4.25 SiBE04-101 Faulty Outdoor Unit PCB Remote Controller Display ∗ Outdoor unit LED Display A4 Method of Malfunction Detection The proper program operation of the microcomputer is checked by the program. Malfunction Decision Conditions When the microcomputer program does not function properly. Supposed Causes Microcomputer program run-away due to an external factor.
SiBE04-101.book Page 117 Monday, October 15, 2001 3:08 PM SiBE04-101 4.26 Troubleshooting Faulty Outdoor Unit PCB and Transmitting/Receiving Circuit Remote Controller Display ∗ Outdoor unit LED Display A3 Method of Malfunction Detection 1. The proper program operation of the microcomputer is checked by the program. 2.
SiBE04-101.book Page 118 Monday, October 15, 2001 3:08 PM Troubleshooting SiBE04-101 Troubleshooting Caution Check No.12 Refer to P.121 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the power supply voltage. Is it at the rated voltage? NO Correct the power supply. YES Check 25 Amps fuse on outdoor unit PCB. Is there conductivity in 25 Amps fuse NO Replace the outdoor unit PCB. YES Check the varistor on outdoor unit PCB.
SiBE04-101.book Page 119 Monday, October 15, 2001 3:08 PM SiBE04-101 Checks 5. Checks 5.1 How to Check 5.1.1 Thermistor Resistance Check Check No.1 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below. Thermistor R25˚C=20kΩ B=3950 Temperature (˚C) Service Diagnosis -20 211.0 (kΩ) -15 150 -10 116.5 -5 88 0 67.2 5 51.
SiBE04-101.book Page 120 Monday, October 15, 2001 3:08 PM Checks 5.1.2 SiBE04-101 Installation Condition Check Check No.2 Installation condition check Check the allowable dimensions of the air suction and discharge area. Normal Abnormal Does the discharged air from other outdoor unit cause an increase of the suction air temperature? Change the position of the air discharge grille or the installation location. YES Change the position of the air discharge grille or the installation location.
SiBE04-101.book Page 121 Monday, October 15, 2001 3:08 PM SiBE04-101 5.1.4 Checks Power Supply Waveforms Check Check No.12 5.1.5 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2] Power Transistor Output Check Check No.
SiBE04-101.book Page 122 Monday, October 15, 2001 3:08 PM Checks 5.1.6 SiBE04-101 Power Transistor Check (Capacitor Voltage Check) Check No.14 1. Power transistor check Note: Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is approx. 0 volt before checking power transistor. < Measuring method > Disconnect the compressor harness connector from the outdoor unit PCB.
SiBE04-101.book Page 123 Monday, October 15, 2001 3:08 PM SiBE04-101 Checks < Measuring positions > Take measurements at the power transistor (+) and (-) terminals in the same way as described in section 1. Set the multi-tester to DC and VOLTAGE RANGE before measurement. ∗ ∗ 5.1.7 Since capacitor (+) and (-) are connected to power transistor (+) and (-), capacitor voltage can be measured at the power transistor (+) and (-) terminals. On this P.C.
SiBE04-101.book Page 124 Monday, October 15, 2001 3:08 PM Checks 5.1.8 SiBE04-101 Fan Motor Connector Output Check Check No.16 1. Check the connector connection. 2. With the power ON, operation OFF, and the connector connected, check the following. ∗Output voltage of about 5 V between pins 1 and 3. ∗Generation of 3 pulses between pins 2 and 3 when the fan motor is operating. Failure of (1) faulty PCB Replace the PCB. Failure of (2) faulty hall IC Replace the fan motor.
SiBE04-101.book Page 125 Monday, October 15, 2001 3:08 PM SiBE04-101 Checks 5.1.10 Discharge Pressure Check Check No.19 Discharge pressure check NO High Replace compressor. YES NO Is the stop valve open? Open the stop valve. YES Is the connection pipe deformed? NO Replace the pipe installed at the site. YES NO At the heat exchanger and air filter dirty? Clean. YES Replace the compressor. (R1081) 5.1.11 Electronic Expansion Valve Check Check No.
SiBE04-101.book Page 126 Monday, October 15, 2001 3:08 PM Checks SiBE04-101 5.1.12 Outdoor Unit PCB Rotation Pulse Input Check Check No.27 1. Turn OFF the power switch and disconnect the connector S70. 2. Turn ON the power switch and check the voltage at the following positions: • Approx. DC15V between the pins No.3 to No.4 • Approx. DC0V between the pins No.2 to No.4 • Approx. DC15V between the pins No.1 to No.4 3. Turn OFF the power switch and connect the connector S70. 4.
SiBE04-101.book Page 127 Monday, October 15, 2001 3:08 PM SiBE04-101 Checks 5.1.14 Indoor Unit PCB(1) Output Check Check No.35 1. 2. 3. 4. Check the connector’s connection. Check the output of the motor power supply voltage (pins 4-7). Check the output of the motor’s control voltage (pins 3-4). Check the output of the rotation command voltage (pins 2-4). PCB S1 7 Motor power supply voltage 6 Unused 5 Unused 4 P.
SiBE04-101.
SiBE04-101.book Page 129 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 7 Removal Procedure 1. For RXD50·60·71J ..............................................................................130 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Removal Procedure Removal of Outer Panels and Fan Motor ............................................ 130 Removal of Electrical Box.................................................................... 134 Removal of Partition Board and Reactor ..........................................
SiBE04-101.book Page 130 Monday, October 15, 2001 3:08 PM For RXD50·60·71J SiBE04-101 1. For RXD50·60·71J 1.1 Removal of Outer Panels and Fan Motor Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure Points 1. Removing the outer panels 1 Remove the four screws from the top panel. 2 Remove the four screws from the blow-off grille and release the grille from the six right and left hooks.
SiBE04-101.book Page 131 Monday, October 15, 2001 3:08 PM SiBE04-101 Step For RXD50·60·71J Procedure 3 Remove the six screws from the front panel. 4 Undo the hook on the top of the motor mount, and release the front panel from the hook of right side and the three hooks of left side.
SiBE04-101.book Page 132 Monday, October 15, 2001 3:08 PM For RXD50·60·71J Step SiBE04-101 Procedure 5 Remove the screw from the shut-off valve cover. 6 Remove the drip proof cover. Points Be careful not to lose or damage the drip proof cover. Fit it back into position. 2. Dismounting the fan motor 1 132 Disconnect the fan motor connectors from the PCB.
SiBE04-101.book Page 133 Monday, October 15, 2001 3:08 PM SiBE04-101 Step For RXD50·60·71J Procedure 2 Remove the washer-fitted nut (M6) from the propeller fan. 3 Remove the four screws from the fan motor.
SiBE04-101.book Page 134 Monday, October 15, 2001 3:08 PM For RXD50·60·71J 1.2 Removal of Electrical Box Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure 1 Disconnect the compressor leads. 2 Disconnect the motorized valve leads.
SiBE04-101.book Page 135 Monday, October 15, 2001 3:08 PM SiBE04-101 Step For RXD50·60·71J Procedure 3 Disconnect the two connectors of the reactor. 4 Disconnect the discharge pipe thermistor.
SiBE04-101.book Page 136 Monday, October 15, 2001 3:08 PM For RXD50·60·71J Step Procedure 5 Disconnect the outdoor air thermistor. 6 Remove the screw from the earth terminal. 7 Remove the two screws from the electrical box.
SiBE04-101.book Page 137 Monday, October 15, 2001 3:08 PM SiBE04-101 Step For RXD50·60·71J Procedure 8 Remove the three screws from the right-side panel. 9 Detach the right-side panel by lifting it up.
SiBE04-101.book Page 138 Monday, October 15, 2001 3:08 PM For RXD50·60·71J Step 10 SiBE04-101 Procedure Points Disconnect the heat exchanger thermistor. Thermistor mounting spring 11 138 Take out the electrical box.
SiBE04-101.
SiBE04-101.book Page 140 Monday, October 15, 2001 3:08 PM For RXD50·60·71J 1.3 SiBE04-101 Removal of Partition Board and Reactor Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure Points 1. Removing the partition board 1 Disconnect the compressor leads from the fixture (wire clip). 2 Remove the two screws from the partition board. 3 Pull up the partition board to detach.
SiBE04-101.book Page 141 Monday, October 15, 2001 3:08 PM SiBE04-101 Step For RXD50·60·71J Procedure Points 2. Removing the reactor 1 Remove the screw from the reactor.
SiBE04-101.book Page 142 Monday, October 15, 2001 3:08 PM For RXD50·60·71J 1.4 Removal of Sound Insulation for Compressor Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure 1 Undo the sound insulation fixture string and draw out the sound insulation. 2 Draw out the sound insulation (a) from the top of the compressor. 3 Undo the fixture string of the sound insulation (b) and draw it out.
SiBE04-101.book Page 143 Monday, October 15, 2001 3:08 PM SiBE04-101 1.5 For RXD50·60·71J Removal of 4-way Valve Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure Before taking this procedure, make sure there is no refrigerant gas left in the refrigerant pipes. Be careful not to allow flames of a gas welding rod to affect the parts around the 4-way valve. To do this, place welding protective sheets or iron plates around.
SiBE04-101.book Page 144 Monday, October 15, 2001 3:08 PM For RXD50·60·71J 1.6 SiBE04-101 Removal of Motorized Valve Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure 1 Remove the motorized valve coil. 2 Remove the 4-way valve coil. 3 Remove the putty. 4 Get rid of the brazing at the points (a) and (b) in this order. Reassembling precautions Wrap the 4-way valve with wet cloth. Splash water over the cloth against becoming too hot.
SiBE04-101.book Page 145 Monday, October 15, 2001 3:08 PM SiBE04-101 1.7 For RXD50·60·71J Removal of Compressor Procedure Step Warning Be sure to turn off all power supplies before disassembling work. Procedure Points 1. Removing the peripherals 1 To avoid burning damage by gas welding rod, detach the terminal cover, disconnect the compressor leads, and dismount the partition board. As precaution, keep the contents in memorandum.
SiBE04-101.book Page 146 Monday, October 15, 2001 3:08 PM For RXD50·60·71J Step Procedure 2 There is one nut for the compressor. 3 Remove the nut with spanner. Before taking this procedure, make sure there is no refrigerant gas left in the refrigerant pipes. When heating up the brazed parts, make sure to carry out the N2 replacement. 1 SiBE04-101 Disconnect the brazed section of the discharge pipe. 2 Disconnect the brazed section of the suction pipe. 3 Dismount the compressor.
SiBE04-101.book Page 147 Monday, October 15, 2001 3:08 PM SiBE04-101 Part 8 Appendix 1. Piping Diagrams..................................................................................148 1.1 Indoor Units ......................................................................................... 148 1.2 Outdoor Units ...................................................................................... 149 2. Wiring Diagrams..................................................................................
SiBE04-101.book Page 148 Monday, October 15, 2001 3:08 PM Piping Diagrams SiBE04-101 1. Piping Diagrams 1.1 Indoor Units FTXD50JV1B / FTXD60JV1B / FTXD71JV1B INDOOR UNIT THERMISTOR ON INLET PIPE HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING ( CuT) M FAN MOTOR FIELD PIPING ( CuT) REFRIGERANT FLOW COOLING FTXD50- 12.7 6.4 FTXD60- 15.9 6.4 FTXD71- 15.9 9.
SiBE04-101.book Page 149 Monday, October 15, 2001 3:08 PM SiBE04-101 1.2 Piping Diagrams Outdoor Units RXD50JV1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 7.9CuT 7.9CuT CAPILLARY TUBE 2 CAPILLARY TUBE 3 HEAT EXCHANGER THERMISTOR REFRIGERANT FLOW COOLING 6.4CuT HEATING MUFFLER M CAPILLARY TUBE 4 PROPELLER FAN 12.7CuT MOTOR OPERATED VALVE FILTER FOUR WAY VALVE ON:HEATING 12.7CuT 6.4CuT 6.4CuT 15.9CuT 7.9CuT 12.7CuT 12.
SiBE04-101.book Page 150 Monday, October 15, 2001 3:08 PM Wiring Diagrams SiBE04-101 2. Wiring Diagrams 2.1 Indoor Units FTXD50JV1B / FTXD60JV1B / FTXD71JV1B FIELD WIRING. PCB3 S25 PCB1 S24 LED LED LED H1 PCB2 S37 Fu 3.
SiBE04-101.book Page 151 Monday, October 15, 2001 3:08 PM SiBE04-101 2.
SiBE04-101.
SiBE04-101.book Page i Monday, October 15, 2001 3:08 PM SiBE04-101 Index Symbols * ..........................................95, 96, 97, 106, 116, 117 Numerics 3-D Airflow ..............................................................25 4 Way Valve Coil ....................................................13 4-Way Valve ...........................................................38 4-way Valve ..........................................................143 A A1 ..............................................
SiBE04-101.book Page ii Monday, October 15, 2001 3:08 PM SiBE04-101 OL Action .............................................................102 Outdoor Fan System Check .................................120 Outdoor Unit PCB Rotation Pulse Input Check ....126 Outdoor Unit Silent Operation ................................29 outdoor unit silent operation .............................28, 44 Outer Panels ........................................................130 Output Overcurrent ..............................
SiBE04-101.book Page iii Monday, October 15, 2001 3:08 PM SiBE04-101 Drawings & Flow Charts A Automatic Operation ..............................................34 C Compressor Protection Function ...........................39 Compressor Seizing .............................................104 D DC Fan Seizing ....................................................105 Defrost Control Time Chart .......................................................22 Detection of Low Voltage (LVP) .........................
SiBE04-101.book Page iv Monday, October 15, 2001 3:08 PM SiBE04-101 Power Supply Abnormalities or Faulty Indoor PCB .................................................................97 Power Supply Waveforms Check ........................121 Power Transistor Check (Capacitor Voltage Check) ...........................................................122 Powerful operation in cooling mode .......................32 Pre-heat Operation ................................................
