2012 Service/Parts ServiceManual Manual Room Air Conditioners AUTO FAN CONTINUOUS AUTO C F AUTO AUTO SYSTEM CONTINUOUS °F °C FAN MODE AUTO POWER FAN SPEED SYSTEM SCHEDULE SCHEDULE FAN MODE FAN SPEED Standard Chassis Models Cool Cool Only Only 115-Volt: SS08N10*, 115-Volt: SS10N10*, SS12N10*, SS08M10, SS10M10, SS12M10, SS14M10SS14N10*, SM15N10* 208-230-Volt: SS12N30*, 208-230-Volt: SS15N30*, SM18N30*, SM21N30* SS12M30, SS15M30, SM18M30, SM21M30 SM24N30*,SL22N30*, SL24N30*, SL28N30*, SL36N30*
Table Of Contents Important Safety Information ..................................................................................................................................... 2-4 Introduction ................................................................................................................................................................... 5 Model and Serial Number Location ...................................................................................................................
IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product.
• Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning. • Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry. • Never operate the A/C unit with wet hands.
PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS: • Read the Installation/Operation Manual for the air conditioning unit prior to operating. • Use air conditioner on a single dedicated circuit within the specified amperage rating. • Connect to a properly grounded outlet only. • Do not remove ground prong of plug. • Do not cut or modify the power supply cord. • Do not use extension cords with the unit. • Be extremely careful when using acetylene torch and protect surrounding property.
INTRODUCTION This service manual is designed to be used in conjunction with the installation and operation manuals provided with each air conditioning system. This service manual was written to assist the professional RAC (Room Air Conditioner) service technician to quickly and accurately diagnose and repair malfunctions. This manual will deal with subjects in a general nature.
UNIT IDENTIFICATION Model Number Code MODEL NUMBER AIR CONDITIONING CO. YS10M10A SAN ANTONIO, TEXAS SERIAL NUMBER ASSEMBLED IN MEXICO LICY00008 VOLTS 115 60 HZ / 1 PH VOLTS MIN 108 COOLING HEATING BTH/HR 6500 BTH/HR 6500 EER 12.0 EER 10.4 AMPS 8.0 AMPS 7.0 REFRIGERANT XXXXXXXXX 30.1 OZ R410A 600 PSIG HS 300 PSIG LS XXXXXXXXXX XXXXXXXXX XXXXXXXXXX XXXXXXXXXX FUSE PROTECTED CIRCUITS USE 15A TIME DELAY FUSE UL X XX XXXXX XXXXXXXXXX MODEL NUMBER AIR CONDITIONING CO.
REFRIGERATION SYSTEM PERFORMANCE DATA EVAP. AIR TEMP. DEG. CONDENSER F Temp. TEMP DEG. F Discharge Air Drop F.
Installation Information / Sleeve Dimensions Sleeve Height Width S 15 15/16 " 25 15/16 " M 17 15/16 " 15/16 " L 20 25 3/16" 28" Thru-the-wall Installation Finished Hole Depth Shell Depth to Minimum Louvers with Front Extension Into Room* Minimum Extension Outside* Height Width 29" 8 ¾" 5 ¾” 16 15/16 ” 27 3/8" 42" 16 3/16” 26 3/16” 7 3/8" 29" 8 ¾" 5 ¾” 16 15/16 ” 27 3/8 " 42" 18 3/16” 26 7 3/8 ” 35 ½” 16 ½" 18 15/16 ” 29 7/8 ” 20 3/8 " 5 3/8 ” Window Width M
ELECTRICAL DATA WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes which have jurisdiction. Failure to do so can result in personal injury or death. NOTICE FIRE HAZARD Not following the above WARNING could result in fire or electically unsafe conditions which could cause moderate or serious property damage.
WARNING Electrical Shock Hazard Make sure your electrical receptacle has the same configuration as your air conditioner’s plug. If different, consult a Licensed Electrician. Do not use plug adapters. Do not use an extension cord. Do not remove ground prong. Always plug into a grounded 3 prong oulet. Failure to follow these instructions can result in death, fire, or electrical shock. If you have fuses, they should be of the time delay type.
Kühl Control Options Kuhl Control Options The Kühl gives you a variety of options for control, programming, and scheduling including wireless capabilities Wireless Programming and Control: The new FriedrichLink™ Adapter (sold seperately) allows you to conviently control, program and monitor your air conditioning unit remotely from a smartphone or computer. FriedrichLink™ Adapter accessory available through Friedrich authorized retailers or www.friedrich.com. See FriedrichLink™ Adapter section on www.
Control Panel and Display Identification Let’s check out how to control your air conditioner. On the control panel, just above the POWER , is a liquid crystal display (LCD). All of the control panel function buttons and mode icons can be viewed in Figure 3. Power On – Press the button to turn on the air conditioner. The power button illuminates to indicate that the power is on. The backlight on the power switch will automatically dim to 20% intensity after 15 seconds of inactivity.
Control Panel Operation Instructions SYSTEM - The button allows you to sequentially select the modes of operation. To select, press once and let go. FAN MODE – The button allows you to select between CONTINUOUS modes. To select, press once and let go.
UP and DOWN - arrows - Pressing either or button changes the system's set point (desired room temperature). These buttons are also used for setting the Timer and other programming. ºF - ºC Select F AUTO FAN F AUTO FAN SET POINT SET POINT FRR132 FRR100 To switch from degrees Fahrenheit (F) to Celsius (C), press buttons simultaneously for three seconds. and F AUTO FAN SET POINT FRR101 One press equals 1 degree of change. Holding the button down for more than 0.
DIM Function Wait Icon There are three separate display brightness levels, AUTO, 20% and full (100%). To change the DIM setting, press the Power button for three seconds. F AUTO FAN SET POINT The wait icon FRR192 The 1 indicates a DIM setting of Auto (factory default on new units). Use the or buttons to change the setting. FRR120 illuminates when the compressor lockout is active. Control Panel Lock TIMER To lock the front panel controls, press and hold the SPEED + SCHEDULE buttons for 3 seconds.
TIMER OR SCHEDULE OPTIONS 1 OR 2 SELECTION The control system has one Timer and two Schedule functions: A. B. Timer (factory default) - Allows you to command the unit to turn ON and OFF at a time you program. Setting the start, stop and day can be found latter in this manual on page 18. F AUTO FAN Residential Schedule - When selection #1 is selected, the unit follows a pre-programmed set of operational parameters that covers 5 days of the week with 4 time windows during each day.
TIMER SETTINGS 1. Set time and day 2. Set start time 3. Set stop time Figure 4 F AUTO FAN SET POINT FRR131 Press TIMER SET (Refer to Figure 4) button to exit and save the SET TIME function. The TIMER SET button must be pressed within 15 second. Button inactivity for more than 15 seconds causes the display to time out and return to the normal operating display.
Set theTimer Stop Time Timer ON Scenarios Scenario 1 F AUTO FAN F AUTO FAN SET POINT SET POINT FRR144 The display shows a normal system. Press and hold the MIN button (Figure 4) for 3 seconds. Note the Timer start - stop times may be set even when the system is in the Schedule mode. The display shows a normal operating system. FRR156 AM OFF FRR145 Use the or button to adjust the hour. Press the TIMER SET button (Figure 4) to advance to the Minutes section.
Timer OFF Scenarios Scenario 1 Timer - Schedule Control Block F AUTO FAN SET POINT SCHEDULE FRR166 The display shows the unit in Timer mode during an in-active (OFF) period. FRR148 If the unit is operating in the TIMER or SCHEDULE mode, and you press TIMER any bytton except the SCHEDULE button, the TIMER icon begins to blink. All button action is blocked.
Remote Control Operation FAN SPEED Button - Used to sequentially select new fan speed, plus FA N AUTO operation. When the SPEED button is pressed, the fan speed icon (triangle) changes to indicate the new speed level. Fan speed automatically varies depending on the set temperature on the control panel and the actual room temperature. For example if there is a big difference between your set temperature and the actual room temperature, the system fan speed increases to HIGH.
Remote Control Operation (Continued) Figure 12 DISPLAY AUTO AUTO FAN CONTINUOUS AUTO C F SYSTEM FAN MODE SYSTEM FAN MODE POWER TEMPERATURE UP TEMPERATURE DOWN POWER FAN SPEED SCHEDULE SCHEDULE FAN SPEED FRR081 Figure 13 COOL ICON HEAT ICON FAN ONLY ICON SYSTEM MODE AUTO FAN MODE FAN SPEED AUTO FAN CONTINUOUS AUTO C F °F / °C ICONs SCHEDULE ICON FRR082 21
UNIT OPERATION Front Panel System Mode Sequence (TIMER/SCHEDULE = OFF) There are two system modes of operation. One for a cool only unit (see figure 1) and one for a heat-cool unit (see figure 2). System parameters for each system mode are saved when exiting a system mode, and retrieved when entering a new system mode.
ELECTRONIC CONTROL SEQUENCE OF OPERATION Compressor and Reversing Valve Control Active Mode Cooling Heat - Heat Pump Heat - Electric Fan Only Compressor On On Off Off Reversing Valve State De-Energized Energized * The Reversing valve stays in the last state until a call for heat or cooling (see figure below) Compressor Operation: The reversing valve only changes when required to provide cooling or heat pump. The RV valve stays in it's last state until required to change.
Heating Mode Control Operation There are two heating methods: Heat Pump and Electric Resistance Heat. There are 3 types of units that provide heating: Heat Pump Only (Model YS10M10) Heat Pump with Electric Heat and Cool with Electric Heat. Heat Control Operation Heat Pump Only Unit (YS10M10 has no electric heat back-up) Once the ambient temperature falls below the Heating Demand Threshold (1.5 ˚F Below the Heat Set Point Temperature), the heating cycle begins. The fan is turned on 5 seconds before.
Heat Pump With Electric Heat Operation This heating is more complex due to the possibility of two heating methods. If the ambient indoor temperature is below the heat demand threshold (1.5˚F below the heat set point temperature), and the compressor is not locked out, turn on compressor. If the ambient indoor temperature is 0.25˚F above the heat set point turn off the compressor. If the compressor is locked out & electric heat is available: 1.
Heat Pump With Electric Heat Operation (Continued) Condition 2 If the Δ (delta) (set point temperature minus the ambient indoor temperature) is greater than 5 ˚F, then the unit will switch to electric heat, if available. The unit will continue to operate with electric heat until the heat demand is satisfied. Note that the electric heat switches on after the Δ temp passes 5°F and the heat pump switches off. Also note that the electric heat will run until the heat demand is satisfied.
Compressor Lock Out Time The lockout feature ensures that the compressor is de-energized for a period of time.
Fan Operation (Front Panel Mode) Heat – Cool – Auto – Fan Only Models starting with SS, SM have 4 speeds. Models with SL, and all Kuhl+ have 3 speeds 1 2 "On" " Turns On or Off with heat or cool demand On" Turns On or Off with heat or cool demand Speed Selection 3 4 "On" " Turns On or Off with heat or cool demand On" Turns On or Off with heat or cool demand Continuous Fan AUTO Mode Fan Only "On" " On" "On" " AUTO AUTO Operation, but never turns Off. Uses cool set point or heat set point vs.
REMOVING THE FRONT COVER WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. Remove the decorative front cover by using the tool provided (see figure below). REMOVING THE CHASSIS WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. Remove the decorative front cover. (See figure at left).
REPLACING THE INDOOR COIL THERMISTOR Replace the indoor coil sensor. Ensure to properly clip and insulate it at the same location (see figure below). WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. Remove the decorative front cover (see page 29). Remove all indicated screws below (8 total, see figure below). Remove the Discharge Sensor and the User Interface plugs from the control board.
Airflow Selection and Adjustment Air flow direction adjustment left or right side of the discharge opening. Each of the banks of louvers can be directed left, right, up or down in order to achieve the most optimum move it in the direction that you would like the air to be directed. Please louvers than the other. Fresh air and exhaust control Your air conditioner has the ability to bring fresh air into the room or exhaust stale air out of the room.
COMPONENTS TESTING FAN MOTOR A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A self-resetting overload is located inside the motor to protect against high temperature and high amperage conditions. (See Figure 23) WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. BLOWER/FAN MOTOR - TEST 1. Determine that capacitor is serviceable. 2.
COMPONENTS TESTING (continued) HEATING ELEMENT All heat pumps and electric heat models are equipped with a heating element with the exception of model YS10M10. The other “YS” and “ES” models are equipped with a 3.3 KW element. The “YM” and “EM” models are equipped with a 4.0 KW element. The “YL” and “EL” models are equipped with a 5.2 KW element. Heating Element Sample The heating element contains a fuse link and a heater limit switch.
If the User Interface does not turn on: 1. Make sure the unit has the proper voltage and that it is turned on. 2. Disconnect the User Interface’s wire harness on the control board. 3. Using a voltmeter, check the top and bottom pins of the male connector (see picture below). There should be 5VDC 4. If there is no voltage, replace the electronic control board. 6. If the connections and the wire harness are good, replace the User Interface.
REFRIGERATION SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more difficult and time consuming, if not (in some cases) entirely impossible. The refrigeration system uses four basic principles (laws) in its operation they are as follows: 1. “Heat always flows from a warmer body to a cooler body.” 2.
R-410A SEALED SYSTEM REPAIR CONSIDERATIONS WARNING Refrigeration system under high pressure Do not puncture, heat, expose to flame or incinerate. Only certified refrigeration technicians should service this equipment. R410A systems operate at higher pressures than R22 equipment. Appropriate safe service and handling practicces must be used. Only use gauge sets designed for use with R410A. Do not use standard R22 gauge sets.
R-410A SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER. EQUIPMENT REQUIRED: 1. Voltmeter 9. 2. Ammeter 10. Low Pressure Gauge - (-30 to 200 lbs.) 3. Ohmmeter 11. Vacuum Gauge - (0 - 1000 microns) 4. E.P.A. Approved Refrigerant Recovery System 12. Facilities for flowing nitrogen through refrigeration tubing during all brazing processes. 5. Vacuum Pump (capable of 200 microns or less vacuum.) 6.
Method Of Charging / Repairs The acceptable method for charging the sealed system is the Weighed in Charge Method. The weighed in charge method is applicable to all units. It is the preferred method to use, as it is the most accurate. The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair, compressor replacement, or when there is no refrigerant charge left in the unit. To charge by this method, requires the following steps: 1.
WARNING WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants. Failure to do so could result in serious injury or death.
Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions. A partial restriction allows some of the refrigerant to circulate through the system. With a complete restriction there is no circulation of refrigerant in the system.
HERMETIC COMPONENTS CHECK WARNING WARNING BURN HAZARD Proper safety procedures must be followed, and proper protective clothing must be worn when working with a torch. CUT/SEVER HAZARD Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to follow these procedures could result in moderate or serious injury. Failure to do so could result in serious injury. METERING DEVICE Capillary Tube Systems All units are equipped with capillary tube metering devices. 3.
REVERSING VALVE DESCRIPTION/OPERATION WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. The Reversing Valve controls the direction of refrigerant flow to the indoor and outdoor coils. It consists of a pressure-operated, main valve and a pilot valve actuated by a solenoid plunger. The solenoid is energized during the heating cycle only. The reversing valves used in the RAC system is a 2-position, 4-way valve.
TESTING THE REVERSING VALVE SOLENOID COIL WARNING ELECTRIC SHOCK HAZARD Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service. Failure to do so could result in electric shock, serious injury or death. The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle. 1. Turn off high voltage electrical power to unit. 2.
Touch Test in Heating/Cooling Cycle WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns. 6. Protect new valve body from heat while brazing with plastic heat sink (Thermo Trap) or wrap valve body with wet rag. 7. Fit all lines into new valve and braze lines into new valve. Proper safety procedures must be followed, and proper protective clothing must be worn. WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator.
COMPRESSOR CHECKS WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. Locked Rotor Voltage (L.R.V.) Test Locked rotor voltage (L.R.V.) is the actual voltage available at the compressor under a stalled condition. Single Phase Connections Disconnect power from unit.
Single Phase Resistance Test WARNING Many compressor failures are caused by the following conditions: 1. Improper air flow over the evaporator. 2. Overcharged refrigerant system causing liquid to be returned to the compressor. 3. Restricted refrigerant system. 4. Lack of lubrication. Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale (R x 1). 5. Liquid refrigerant returning to compressor causing oil to be washed out of bearings.
COMPRESSOR REPLACEMENT Recommended procedure for compressor replacement WARNING RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service. Failure to do so could result in electric shock, serious injury or death. 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. WARNING 3.
SPECIAL PROCEDURE IN THE CASE OF MOTOR COMPRESSOR BURNOUT WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Failure to do so may result in personal injury, or death. WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants. Failure to follow these procedures could result in serious injury or death.
ROUTINE MAINTENANCE WARNING ELECTRIC SHOCK HAZARD Turn off electric power before inspections, maintenances, or service. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. WARNING COILS AND BASE PAN The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodically (yearly or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper, etc.).
ROUTINE MAINTENANCE (Continued) NOTICE Do not drill holes in the bottom of the drain pan or the underside of the unit. Not following this notice could result in damage to the unit or condensate water leaking inappropriately which could cause water damage to surrounding property. SLEEVE / DRAIN Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and debris. Clean both areas with an antibacterial and antifungal cleaner.
ROUTINE MAINTENANCE (Continued) Standard filter cleaning, removal and installation instructions Removing filter Filter dissassembly and cleaning STEP 1. STEP 1. 3 NOTE: Figure 1 Figure 3 FILTER FILTER GRIP STEP 2. Remove the filter by grabbing it from its handle, lifting it up and swinging it out. Figure 2 STEP 2. Swing the front frame open. Clean the front frame by washing Figure 4 A FILTER GRIP TOP TAB FRONT FRAME WITH STANDARD MESH FILTER HANDLE Filter assembly STEP 1.
ROUTINE MAINTENANCE (Continued) After Maintenance/Repair Start-up Checklist and Notes u Inspect and ensure that all components and accessories have been installed properly and that they have not been damaged during the installation progress. u Check the condensate water drain(s) to ensure that they are adequate for the removal of condensate water, and that they meet the approval of the end user. u Ensure that all installation instructions concerning clearances around the unit have been adhered to.
Service and Assistance Before calling for service, please check the “Troubleshooting Tips” section on pages 40 and 41. This may help you to find the answer to your problem, avoid unnecessary service calls, and save you the cost of a service call if the problem is not due to the product itself. If you have checked the “Basic Troubleshooting” section and still need help, it is available as follows: You can find the name of your local Authorized Service Provider by visiting our web site at www.friedrich.com.
How to Check the Diagnostic Codes Erasing the Diagnostic Codes See codes chart on next page. F F AUTO FAN AUTO FAN SET POINT SET POINT To check the active system errors, press the FAN SPEED & keys for 3 sec. An “E” will appear in the display. Use the or keys to scroll through any system errors. Only active errors will be shown. The display error mode will time out in 15 seconds with no key activity. Press and hold the TIMER SCHEDULE and buttons simultaneously for 3 sec.
ERROR CODES ANDAND ALARM STATUS ERROR CODES ALARM STATUS Error Code 1 2 3 4 Problem Front Panel Button Stuck For More Than 20 Seconds Input Voltage Out of Specification (103 - 127 / 187 - 253) Indoor Temperature Sensor is Open or Shorted Indoor Coil Temperature Sensor is Open or Shorted 5 Outdoor Coil Temperature Sensor is Open or Shorted 6 Outdoor Coil > (greater than) 175 F 7 8 9 10 Control Board's Action Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch input.
Test Mode This function is used to test the compressor operation. By turning it on, it allows the service technician to bypass the compressor’s 3 minute time delay. F AUTO FAN SET POINT FAN FAN Press the MODE , SPEED , & SCHEDULE buttons simultaneously for 3 seconds. This will activate the test mode. TIMER ON The ON icon will appear for 5 seconds and the display will then revert to the normal display. The test mode will time out after 1 hour. To cancel test mode, unplug and replug the power cord.
THERMISTORS’ RESISTANCE VALUES (This Table Applies to All Thermistors) TEMP 57 RESISTENCE (K Ohms) F -25 -20 -15 -10 -5 0 5 10 15 20 25 30 31 32 33 34 35 36 37 38 39 40 45 50 55 60 65 66 67 68 69 70 71 72 73 74 75 76 MIN 210.889 178.952 151.591 128.434 108.886 92.411 78.541 66.866 57.039 48.763 41.786 35.896 34.832 33.803 32.808 31.846 30.916 30.016 29.144 28.319 27.486 26.697 23.116 20.071 17.474 15.253 13.351 13.004 12.668 12.341 12.024 11.716 11.418 11.128 10.846 10.574 10.308 10.051 CENTR 225.
ROOM AIR CONDITIONER UNIT PERFORMANCE TEST DATA SHEET JOB NAME________________________________ TECHS NAME____________________________________ DATE: _______________ MODEL:_______________ SERIAL:________________ HOW IS ALL OF THE INSTALLATION? GOOD BAD YES NO ____ ____ ____ ____ ____ IS A C H AS S IS S E A L G AS K E T IN T A L L E D ? IS T H E F R E S H/E XA US T A IR V E N T OP E N ? IS A F R IE DR IC H S L E E V E INS T A L L E D? IS A F R IE DR IC H O UT DO OR G R IL LE INS T A L L E D? IS MA IN T E N A
TROUBLESHOOTING TIPS NOTE: To more accurately identify the problem, first check for current maintenance alerts and their history. Problem Possible Cause The unit is turned to the off position, Unit does not operate. Unit Trips Circuit Breaker or Blows Fuses. LCDI Power Cord Trips (Reset Button Pops Out). The LCDI power cord is unplugged. The LCDI power cord has tripped (Reset button has popped out). Press and release RESET (listen for click; Reset button latches and remains in) to resume operation.
TROUBLESHOOTING TIPS (Continued) Problem Possible Cause The outside temperature is below 60° F (16° C). Do not try to operate your air conditioner in the cooling mode when the outside temperature is below 60° F (16° C). The unit will not cool properly, and the unit may be damaged. The digital control is set to fan cycling mode. Since the fan does not circulate the room air continuously at this setting, the room air does not mix as well and hot (or cold) spots may result.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Low voltage Possible Solution Check voltage at compressor. 115V & 230V units will operate at 10% voltage variance Temperature not set cold enough or Set temperature to lower than ambient position. room air thermistor inoperative Test thermistor and replace if inoperative. Compressor does not run Compressor hums but cuts off on overload Hard start compressor. Direct test compressor.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Fuse blown or circuit tripped Replace fuse, reset breaker. If repeats, check fuse or breaker size.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Overload inoperative. Opens too soon Check operation of unit. Replace overload if system operation is satisfactory Compressor restarted before system pressures equalized Control’s default of 3 minutes wait delay timer inoperative. Replace board. Compressor runs Low or fluctuating voltage for short periods only.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Water “spitting” into room Problem Excessive moisture Problem Unit short cycles Problem Prolonged off cycles Problem Outside water leaks 64 Possible Cause Possible Solution Sublimation: When unconditioned saturated, outside air mixes with conditioned air, condensation forms on the cooler surfaces Ensure that foam gaskets are installed in between window panes & in between the unit & the sleeve.
HEAT / COOL ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Room temperature uneven (Heating cycle) Possible Cause Bad indoor ambient thermistor Check error codes. Replace as needed. Fan speed too low Set at higher fan speed. Opened door, windows, etc. Close doors, windows, etc. ATSF (room air sampling feature) disabled Enable ATSF Problem Possible Cause Bad outdoor coil thermistor Unit will not defrost (Heat pump only models) Possible Solution Possible Solution Replace thermistor.
HEAT PUMP ROOM AIR CONDITIONERS: TROUBLE SHOOTING TIPS Problem Unit cools when heat is called for Possible Cause Incorrect wiring Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Reversing valve fails to shift Block condenser coil & switch unit to cooling. Allow pressure to build up in system, then switch to heating. If valve fails to shift, replace valve.
HEAT PUMP ROOM AIR CONDITIONERS: TROUBLE SHOOTING TIPS REFRIGERANT SYSTEM DIAGNOSIS - HEATING CYCLE LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Airflow Across Outdoor Coil Outdoor Ambient Too High for Operation in Heating Refrigerant System Restriction Outdoor Ambient Too High For Operation In Heating Refrigerant System Restriction Reversing Valve not Fully Seated Reversing Valve not Fully Seated Low Airflow Across Indoor Coil Undercharged Overcharged Und
TROUBLESHOOTING TOUCH TEST CHART: TO SERVICE REVERSING VALVES 5 NOTES: RIGHT Pilot RIGHT PilotTube Capillary Capillary Tube LEFT Pilot Tube to OUTSIDE 4 LEFTCapillary Pilot Tube Capillary Tube 3 COIL Tube to OUTSIDE COIL SUCTION TUBE 2 to INSIDE Tube toTube INSIDE COILCOIL 1 SUCTION TUBE to to Compressor Compressor DISCHARGE TUBE from Compressor from Compressor VALVE OPERATING CONDITION DISCHARGE TUBE NORMAL FUNCTION OF VALVE 6 Normal Cooling Hot Cool Cool as (2) Hot as (1) *TVB T
ELECTRONIC CONTROL BOARD COMPONENTS IDENTIFICATION Outdoor Coil Thermistor (Blue) Indoor Coil Thermistor Low Fan speed (Check here for 3.3 Volts DC) (Green) Medium Fan speed High Fan speed Max Fan speed (Heat+Cool units along with Cool models SL28 and SL36 only have 3 fan speeds) Indoor Ambient Air Thermistor (Check here for 3.3 Volts DC) Reversing Valve Heater Relay Transformer User Interface Connector Discharge Air Thermistor (Check here for 3.
Kühl E-Control Service Kit Configuration Instructions – Electronic Control Gen. 2 For Use with Kühl (cool only models) and Kühl + (cool and heat models) N models. Example SS08N10-A Notice: Please read these instructions completely before attempting configuration. WARNING: Refer to the table below to determine the appropriate Electronic Control Kit part number by unit model number prefix.
Kϋhl Electronic Control COOL ONLY Models SS08N10-A, SS10N10-A, SS10N10-B, SS12N10-A, SS14N10-A, SS14N10A-A, SM15N10-A, SS12N30-A, SS15N30-A, SM18M30-A, SM21N30-A, SM24N30-A C S R -F- -F- -F- RED ORANGE ELECTRONIC CONTROL BLUE BLACK Make sure you have the correct voltage configuration for your unit (See page 70).
Kϋhl Electronic Control COOL ONLY Models SL22N30-A, SL24N30-A, SL24N30-B C S R -F- -F- -F- RED BLUE ELECTRONIC CONTROL BLACK BLACK POWER SUPPLY 230/208/115VAC BLACK WHITE WHITE WHITE c HE R M FAN TO CAPACITOR BRACKET GREEN OR YELLOW/GREEN RED BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC NEUTRAL (115 V) MAX 4 USER INTERFACE L2 (230/208 V) F4 R HIGH 3 F3 2 F2 OLP FAN MTR MEDIUM S LOW 1 R OLP C 5 COM CAP F1 L2 OR N L1 FAN COMPRESSOR COMP S HERM COM CAP
Kϋhl Electronic Control COOL ONLY Models SL28N30-A, SL28N30-B, SL28N30-C C S R -F- -F- -F- RED BLUE ELECTRONIC CONTROL BLACK BLACK WHITE SSR BLACK BLUE POWER SUPPLY 230/208/115VAC BLACK WHITE WHITE WHITE c HE R M FAN TO CAPACITOR BRACKET GREEN OR YELLOW/GREEN RED BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC NEUTRAL (115 V) USER INTERFACE MAX 4 F4 3 F3 2 F2 L2 (230/208 V) R HIGH OLP FAN MTR MEDIUM S LOW 1 F1 SSR R OLP 5 COMP COM CAP L2 OR N L1 FAN
Kϋhl Electronic Control COOL ONLY Models SL36N30-A C S R -F- -F- -F- RED BLUE ELECTRONIC CONTROL BLACK INDOOR AMBIENT THERMISTOR DISCHARGE AIR THERMISTOR VOLTAGE SELECTOR JUMPER WIRE WHITE BLACK BLACK SSR BLUE POWER SUPPLY 230/208/115VAC L1 BLACK L2 HE R M FAN TO CAPACITOR BRACKET WHITE GREEN OR YELLOW/GREEN WHITE c RED WHITE BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC 4 F4 3 F3 2 F2 NEUTRAL (115 V) USER INTERFACE MAX L2 (230/208 V) R HIGH OLP MEDIUM 1 S LOW 5
Kϋhl Electronic Control COOL with ELECTRIC HEAT Models ES12N33-A, ES15N33-A, EM18N34-A, EM24M34-A C S R -F- -F- WIRING DIAGRAM -F- RED F1 RELAY BLUE F2 RELAY BLACK ELECTRONIC CONTROL F3 RELAY F4 RELAY RV RELAY HEATER ORANGE EH1 RELAY RED EH2 RELAY J18 COMP RELAY WHITE LINE_L5 POWER SUPPLY 230/208/115VAC LINE_N2 LINE_L3 BLACK WHITE WHITE c HE R M FAN TO CAPACITOR BRACKET GREEN OR YELLOW/GREEN RED BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC NEUTRAL (115 V) USER INTERFACE L
Kϋhl Electronic Control COOL WITH ELECTRIC HEAT Models EL36N35-A C S R -F- -F- WIRING DIAGRAM -F- RED F1 RELAY BLUE F2 RELAY BLACK ELECTRONIC CONTROL F3 RELAY F4 RELAY RV RELAY HEATER ORANGE EH1 RELAY RED PTCR EH2 RELAY WHITE BLACK SSR J18 COMP RELAY BLUE LINE_L5 WHITE BLACK GREEN OR YELLOW/GREEN HE R M FAN TO CAPACITOR BRACKET BLACK WHITE WHITE c RED POWER SUPPLY 230/208/115VAC LINE_N2 LINE_L3 BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC 4 F1 3 F2 2 F3 NEUTRAL
Kϋhl Electronic Control HEAT PUMP without ELECTRIC HEAT YS10N10-A C S R -F- -F- -F- BLACK BLUE ORANGE F1 RELAY BLUE F2 RELAY BLACK F3 RELAY ELECTRONIC CONTROL F4 RELAY RV RELAY EH1 RELAY EH2 RELAY J18 BLACK COMP RELAY LINE_L5 LINE_N2 POWER SUPPLY 230/208/115VAC LINE_L3 BLACK WHITE WHITE WHITE c HE R M FAN TO CAPACITOR BRACKET GREEN OR YELLOW/GREEN RED BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC NEUTRAL (115 V) MAX 4 F4 3 F3 2 F2 USER INTERFACE L2 (230/208 V) R H
Kϋhl Electronic Control HEAT PUMP models YS12N33-A, YM18M34-A C S R -F- -F- -F- BLACK BLUE ORANGE F1 RELAY BLUE F2 RELAY BLACK F3 RELAY ELECTRONIC CONTROL F4 RELAY RV RELAY HEATER ORANGE EH1 RELAY RED EH2 RELAY J18 BLACK COMP RELAY LINE_L5 LINE_N2 POWER SUPPLY 230/208/115VAC LINE_L3 BLACK WHITE WHITE WHITE c HE R M FAN TO CAPACITOR BRACKET GREEN OR YELLOW/GREEN RED BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC NEUTRAL (115 V) USER INTERFACE LOW 4 F4 3 F3 2 F2 L2
Kϋhl Electronic Control HEAT PUMP model YL24N35-A C S R -F- -F- -F- BLACK BLUE ORANGE F1 RELAY BLUE F2 RELAY BLACK F3 RELAY ELECTRONIC CONTROL F4 RELAY RV RELAY HEATER ORANGE EH1 RELAY RED EH2 RELAY BLACK WHITE J18 SSR BLACK BLACK COMP RELAY BLUE LINE_L5 LINE_N2 POWER SUPPLY 230/208/115VAC LINE_L3 BLACK WHITE WHITE WHITE c HE R M FAN TO CAPACITOR BRACKET GREEN OR YELLOW/GREEN RED BROWN BLUE FAN MOTOR TO CHASSIS SCHEMATIC NEUTRAL (115 V) USER INTERFACE
Kühl Gen2 Remote Control Replacement Remote Control Configuration Instructions For Use with Kühl (cool only models) and Kühl + (cool & heat models), N models only. Contents: • Remote Control with Holder • (2) AAA-batteries • Instruction Sheet ATTENTION! – If the Remote Control Does not Control the Unit, You May Need to Configure it. Follow the steps below to configure: Please read instructions completely before attempting configuration of the Remote Control.
Kühl Gen2 Remote Control Step 4. Using the Remote Control Increase or Decrease Keys, match the configuration number displayed on the Remote Control to the number shown on the Air Conditioning Unit display (see examples below). Air Conditioning Unit Display Step 5. To save setting in Remote Control, press and hold the Remote Control SCHEDULE and FAN SPEED Key simultaneously for approximately 6 seconds until the displayed configuration number on the Remote Control flashes.
Kühl User Interface Service Kit Replacement Instructions For Use with Kühl (cool only models) and Kühl + (cool and heat models) ATTENTION! - Please read these instructions completely before attempting replacement. Always unplug the power supply from the power supply receptacle. Contents: • • • • User Interface (UI) Ribbon Cable 2 – Mounting screws for UI Instruction Sheet Step 1. Disconnect ribbon cable by pulling straight out Step 2.
PARTS SECTION Kühl & Kühl+ Standard Chassis Unit Exploded Diagram 83
PARTS SECTION Kühl & Kühl+ Standard Chassis Unit Exploded Diagram 84
Kühl & Kühl+ Small-Chassis 2012 Parts List Item Part Number Part Description 1 1 1 62050304 61850343 61850345 CONDENSOR COIL CONDENSOR COIL CONDENSOR COIL 1 61850344 CONDENSOR COIL * 61818520 * ES12N33-A ES15N33-A SS08N10-A SS10N10-A SS12N10-A SS12N30-A SS14N10-A SS15N30-A YS10N10-A YS12N33-A 1 1 1 1 1 1 1 1 1 3 3 3 1 3 1 1 1 1 1 1 1 1 EXPANDED METAL GRILLE PAINTED SML 1 1 1 1 1 1 1 60169120 SCRIPT FRIEDRICH 2010 "FESTOON" 1 1 1 1 1 1 1 * 2 91002900 61850126 S
11 61871496 FAN MOTOR 11 12 61871497 60500390 FAN MOTOR SUPPLY CORD 15A 125V 12 60500394 SUPPLY CORD 13A 250V 12 60500398 SUPPLY CORD 20A 250V 1 1 13 60179904 CONDENSATE DRAIN VALVE 1 1 14 14 60610603 60610604 BLOWER WHEEL BLOWER WHEEL 15 61814905 SCROLL SML 1 17 1 18 1 19 1 20 * ** 62050304 61803601 61850343 61802500 61850345 61907312 61850344 61821500 61818520 61814805 60169120 CONDENSOR SHROUD, SMLCOIL CONDENSOR COIL MOUNT, FAN MOTOR 2* 2 22 61850126 61817000 61850129 6182020
Kühl & Kühl+ Medium-Chassis 2012 Parts List Item Part Number Part Description 1 61850227 CONDENSOR COIL 1 61850140 CONDENSOR COIL EM18N34-A EM24N34-A SM15N10-A SM18N30-A SM21N30-A SM24N30-A YM18N34-A 1 1 1 1 61850244 CONDENSOR COIL 1 * 61850141 61818521 CONDENSOR COIL EXPANDED METAL GRILLE PAINTED MED 1 * 60169120 SCRIPT FRIEDRICH 2010 "FESTOON" 1 * 2 91002900 61850108 SPEEDNUT PUSH TYPE EVAPORATOR COIL 3 2 62050030 EVAPORATOR COIL 2 62050034 EVAPORATOR COIL 2 2 61850130 62050040 EV
12 60500398 SUPPLY CORD 20A 250V 12 60500399 SUPPLY CORD 30A 250V 1 1 13 60179904 CONDENSATE DRAIN VALVE 1 1 14 60610616 BLOWER WHEEL 1 14 60610617 14 60610618 * 2 22 2 23 2 24 61818521 61814805 60169120 61817100 91002900 61817001 61850108 61820200 62050030 61816701 2 25 2 26 62050034 61906700 61850130 61817400 62050040 61816901 3 29 3 29 61718111 61803461 61717131 61803462 * 27 * 28 3 30 3 31 3 32 * * 33 * 34 * 35 * 35 4 36 5 36 6 37 6 38 6 39 7 40 7 41 7 42 7 43 7 44 *
Kühl & Kühl+ Large-Chassis 2012 Parts List Item Part Number 1 61850238 1 62050222 1 61850246 * 61818522 Part Description CONDENSOR COIL CONDENSOR COIL CONDENSOR COIL EXPANDED METAL GRILLE PAINTED LRG EL25N35-A EL36N35-A SL22N30-A SL25N30-A SL28N30-A SL36N30-A YL24N35-A 1 1 1 1 1 1 1 1 1 1 1 1 1 1 * * 2 2 2 60169120 91002900 61896305 62050004 62050041 SCRIPT FRIEDRICH 2010 "FESTOON" SPEEDNUT PUSH TYPE EVAPORATOR COIL EVAPORATOR COIL EVAPORATOR COIL 1 3 * 3 61834801 61717134 STRAINER .
14 15 16 60610620 61818100 60542007 BLOWER WHEEL SCROLL LRG FAN BLADE 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 17 61807702 SHROUD, LRG 1 1 1 1 1 1 1 18 19 61806700 61907111 INNERWALL ASY LRG 1 1 1 1 1 1 1 1 20 61821500 ASSY DOOR/SLIDE S/M/L 1 1 1 1 1 1 1 MOUNT, FAN& MOTOR 1 1 1 1 1 List 1 Kühl Kühl+ Large-Chassis 2012 Parts * Part 61814806 Item Number 21 61818000 1 61850238 61817600 1* 62050222 22 61820201 1 61850246 23 61818201 * 61818522 24 61906600 * 60169120 25 61817800 * 9
Addendum 1 Schedule Table with Energy Saving Values Pre Programmed Residential Schedule Option 1 Period Sun Start Time System Mode Fan Mode Fan Speed Set Point Cool Set Point Heat Mon 600 Start Time Cool System Mode Auto Fan Mode Low Fan Speed 78 Set Point Cool 70 Set Point Heat 600 Cool Auto Low 78 70 Tues Start Time System Mode Fan Mode Fan Speed Set Point Cool Set Point Heat 600 Cool Auto Low 78 70 Wed Start Time System Mode Fan Mode Fan Speed Set Point Cool Set Point Heat 600 Cool Auto Low 78 70
Friedrich Air Conditioning Company 10001 Reunion Place, Suite 500 San Antonio, TX 78216 800.541.6645 www.friedrich.com ROOM AIR CONDITIONERS LIMITED WARRANTY FIRST YEAR ANY PART: If any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from date of original purchase, FRIEDRICH will repair the product at no charge, provided room air conditioner is reasonably accessible for service.
CUSTOMER SATISFACTION and QUALITY ASSURANCE Friedrich is a conscientious manufacturer, concerned about customer satisfaction, product quality, and controlling warranty costs. As an Authorized Service Provider you play a vital role in these areas. By adhering to the policies and procedures you provide us with vital information on each warranty repair you complete.
FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste 500, San Antonio, TX 78216 P 210-546-0500 l F 210-546-0731 www.friedrich.com Printed in the U.S.A.
