DUCTLESS WALL-MOUNT MINI SPLIT INVERTER+ AND INVERTER++ AIR CONDITIONER / HEAT PUMP SYSTEM QUANTUM INVERTER SERIES (WYS-20, WYS-22, Single-Zone) SERVICE & TROUBLESHOOTING MANUAL (FOR USE BY QUALIFIED PERSONNEL ONLY) INVERTER Model Numbers Encompassed: 20 SEER Series (WYS-20, Quantum Inverter+): WYS009AMFI20RL (comprised of YN009AMFI20RPD + WS009AMFI20HLD) WYS009GMFI20RL (comprised of YN009GMFI20RPD + WS009GMFI20HLD) WYS012AMFI20RL (comprised of YN012AMFI20RPD + WS012AMFI20HLD) WYS012GMFI20RL (comprised
Table of Contents §. Safety Precautions 1. Precautions 2. Information Disclosures (For flammable materials) §. Specifications 1. Model Reference 2. Pipe Length and Drop Height 3. Refrigerant Cycle Diagrams 4. Electrical Wiring Diagrams §. Product Features 1. Display Function 2. Safety Features 3. Basic Features 4. Optional Features §. Maintenance 1. First Time Installation Check 2. Refrigerant Recharging 3. Re-Installation §. Indoor Unit Disassembly 1. Dimensions 2.
Table of Contents §. Troubleshooting 1. Safety Caution 2. General Troubleshooting 3. Complain Record Form 4. Error Diagnosis and Troubleshooting Without Error Code 5. Quick Maintenance by Error Code 6. Troubleshooting by Error Code 7.
Safety Precautions Contents 1. Precautions......................................................................................................................................2 2. Information Disclosures (For flammable materials).........................................................
1. Precautions CAUTION To prevent personal injury, or property or unit damage, adhere to all precautionary measures and instructions outlined in this manual. Before servicing a unit, refer to this service manual and its relevant sections. Failure to adhere to all precautionary measures listed in this section may result in personal injury, damage to the unit or to property, or in extreme cases, death.
2. Information Disclosures (For flammable materials) 2.1 • NO SMOKING signs shall be displayed. Checks to the area • Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. • For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system. 2.
• that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking; • that there no live electrical components and wiring are exposed while charging, recovering or purging the system; • that there is continuity of earth bonding. 2.10 Repairs to sealed components • During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc.
• The refrigerant charge shall be recovered into the correct recovery cylinders. The system shall be flushed with OFN to render the unit safe. This process may need to be repeated several times. Compressed air or oxygen shall not be used for this task. Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum.
• Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs. • The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. • Hoses shall be complete with leak-free disconnect couplings and in good condition.
Specifications Contents 1. Model Reference.............................................................................................................................2 2. Pipe Length and Drop Height......................................................................................................3 3. Refrigerant Cycle Diagrams........................................................................................................4 4. Electrical Wiring Diagrams.....................................
1. Model Reference Refer to the following table to determine the specific indoor and outdoor unit model.
2. Pipe Length, Adjustment Charge, and Drop Height The length and elevation of connection pipe are shown in the table below. If the pipe length exceeds or falls below* the standard pipe length range, refrigerant should be adjusted to ensure nominal cooling/heating capacity. Capacity(Btu/h) Max Pipe Length Max Elevation 9k~12k 25m (82ft) 10m (32.8ft) 18k 30m (98.4ft) 20m (65.6ft) 50m (164ft) 25m (82ft) 65m (213.3ft) 30m (98.4ft) 24k/30k Standard Length ≥ 3m (10ft) ≤ 7.
3.
YN009AMFI22RPE, YN012AMFI22RPE, YN009GMFI22RPE, YN012GMFI22RPE Only for YN012AMFI22RPE, there is an Accumulator.
YN024GMFI20RPD YN024GMFI22RPE, YN030GMFI20RPD Specifications 6
YN036GMFI20RPD Specifications 7
4.
Outdoor Unit PCB (Printed Circuit Board) Diagram Outdoor Unit ODU Model ODU Printed Circuit Board ODU IPM Printed Circuit Board YN009AMFI22RPE YN012AMFI22RPE YN009AMFI20RPD 22000047115 / YN012AMFI20RPD YN009GMFI22RPE YN012GMFI22RPE YN009GMFI20RPD 22000048121 / YN012GMFI20RPD YN018GMFI20RPD 22000046453 YN018GMFI22RPE YN024GMFI22RPE 22000048064 / YN024GMFI20RPD YN030GMFI20RPD YN036GMFI20RPD 22000047742 Specifications 9
Indoor Unit Abbreviations Abbreviation Definition Y/G Yellow-Green Conductor ION Positive and Negative Ion Generator CAP Capacitor PLASMA Electronic Dust Collector L LINE N NEUTRAL T1 Indoor Room Temperature T2 Coil Temperature of Indoor Heat Exchanger Outdoor Unit Abbreviations Abbreviation Definition 4-WAY Gas Valve Assembly/4-WAY VALVE AC-FAN Alternating Current FAN DC-FAN Direct Current FAN CT1 AC Current Detector COMP Compressor T3 Coil Temperature of Condenser T4 Outdo
Specifications 11 1 2 3 OUTDOOR UNIT JX1 INDOOR UNIT Y/G S CN 11 CN16 N CN6_2 CN6_1 L-IN CN2 CN4 5 8(4) CN10A (CN10) MAIN BOARD P_1 CN5 M NOTE: The dotted bordered rectangle indicates OPTIONAL the component is optional, the actual shape shall prevail.
Outdoor Unit Wiring Diagram: 22000035851 YN009AMFI22RPE, YN012AMFI22RPE, YN009AMFI20RPD, YN012AMFI20RPD Specifications 12
Outdoor Unit Wiring Diagram: 22000035853 YN009GMFI22RPE, YN012GMFI22RPE, YN009GMFI20RPD, YN012GMFI20RPD Specifications 13
Outdoor Unit Wiring Diagram: 22000035849 YN018GMFI22RPE, YN024GMFI22RPE, YN024GMFI20RPD Specifications 14
Outdoor Unit Wiring Diagram: 22000036331 YN030GMFI20RPD, YN036GMFI20RPD BLACK RED Y/G OP T IONAL BLUE OP T ION AL : TO P TE M P E R AT U R E P R O T E C T I O N OF C OM P R E S S OR EEV COMP_ TOP OPTIOna l M RED RED BLACK RED BLUE RED OPTIONAL HE AT1 RED BLACK WHITE OPTIONAL HE AT2 RED BLACK WAY1 BLUE CN3 2 CN2 9 CN2 6 CN3 0 CN2 0 CN 8 CN2 1 CN3 6 CT1 PAR T NAME TERMINAL BLOCK COMP_TOP ELECTRIC EXPANSIVE VALVE OUTDOOR DC FAN COMP HEAT1,HEAT2 COMPRESSOR CRANKCAS E HEATING CT1 H-PR
Outdoor Unit Wiring Diagram: 22000047115 YN009AMFI22RPE, YN012AMFI22RPE, YN009AMFI20RPD, YN012AMFI20RPD Specifications 16
No. 1 Name Power Supply CN# Meaning CN3 Earth: connect to Ground CN1 N_in: connect to N-line (100-130V AC input) CN2 L_in: connect to L-line (100-130V AC input) 2 S CN16 S: connect to indoor unit communication 3 4-WAY CN60 connect to 4 way valve, 100-130V AC when is ON.
Outdoor Unit Wiring Diagram: 22000048121, 22000046453 YN009GMFI22RPE, YN012GMFI22RPE, YN009GMFI20RPD, YN012GMFI20RPD, YN018GMFI20RPD Specifications 18
No. 1 Name CN1A CN# Meaning CN3 Earth: connect to Ground CN1 N_in: connect to N-line (208-230V AC input) CN2 L_in: connect to L-line (208-230V AC input) CN16 S: connect to indoor unit communication 2 HEAT1 CN17 connect to compressor heater, 208-230V AC when is ON 3 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON.
14 13 1 R4 26 IC401 IC202 D1 01 R 21 8 R 219 R22 5 R 21 6 R2 17 R2 24 R 215 C 108 C 102 C 210 R 119 R2 14 R1 01 IC201 E203 C407 5V R41 2 IC101 R 52 8 R525 E202 E409 C412 C4 01 R401 C410 C8 C201 C202 D407 1 R 21 1 C1 10 C1 07 R 11 0 IC203 R22 0 T1 C 40 9 C41 5 L 403 + D 401 R 228 R 21 3 R 22 7 C 109 R2 12 R10 2 R 226 OSC1 01 3 R1 11 1 R210 R 207 E405 R4 02 E4 01 D403 E404 + C 403 C 40 2 D4 02 C413 IC405 7805 CN 506 MCU 12 R4 05 IC403 + CN 50 5 R2 04 C
No. 1 Name Power Supply CN# Meaning CN6 Earth: connect to Ground CN7 N_in: connect to N-line (208-230V AC input) CN8 L_in: connect to L-line (208-230V AC input) 2 S CN2 S: connect to indoor unit communication 3 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON. 4 AC-FAN CN5 connect to AC fan 5 HEAT2 CN19 connect to chassis heater, 208-230V AC when is ON 6 TP T4 T3 CN17 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp.
Outdoor Unit Wiring Diagram: 22000047742 11 12 10 Specifications 22 8 7 6 13 5 4 3 2 1 9 YN030GMFI20RPD, YN036GMFI20RPD
No. Name 1 Power Supply 2 3 CN# Meaning CN11 N_in: connect to N-line (208-230V AC input) CN12 L_in: connect to L-line (208-230V AC input) EEV-A CN16 EEV-B CN13 EEV-C CN3 EEV-D CN15 EEV-E CN1 EEV-F CN17 EEV-G CN14 T3 T4 TP CN26 connect to electric expansion valve connect to pipe temp. sensor T3, ambient temp. sensor T4,exhaust temp. sensor TP connect to high and low pressure swtich(pin1-pin2&pin3-pin4:5VDC 4 H-PRO,L-RPO CN29 5 OLP TEMP.
No. Name 10 HEAT_D CN# Meaning CN8 CN20 CN21 connect to the heater, 208-230V AC when is ON 11 HEAT_Y 12 4-WAY CN38 connect to 4 way valve, 208-230V AC when is ON. 13 / CN27 connect to key board CN1 CN36 Note: This section is for reference only. Please take practicality as standard.
Product Features Contents 1. Display Function ......................................................................................................................2 2 Safety Features ........................................................................................................................3 3. Basic Functions .........................................................................................................................4 4. 3.1 Table...........................................
1. Display Function Unit display functions (A) (B) (C) (D) (E) Display Function Fresh(available on select units only) Defrost When the unit is on When TIMER is on ECO function (available on select units only) Lights up in different color according to the operation mode(some units)： Under COOL and DRY mode, it displays as cool color. Under HEAT mode, it displays as warm color.
2. Safety Features Compressor three-minute delay at restart Compressor functions are delayed for up to one minute upon the first startup of the unit, and are delayed for up to three minutes upon subsequent unit restarts. Zero crossing detection error protection(Except for DC fan units) If AC can not detect zero crossing signal for 4 minutes or the zero crossing signal time interval is not correct, the unit will stop and the LED will display the failure.
3. Basic Functions 3.
3.2 Abbreviation • If the compressor ceases operation when the configured temperature is reached, the indoor fan motor operates at the minimum or configured speed. Unit element abbreviations Abbreviation Element T1 Indoor room temperature T2 Coil temperature of evaporator T3 Coil temperature of condenser T4 Outdoor ambient temperature Setting fan speed Ts Set temperature Td Control target temperature TP Compressor discharge temperature parameters of EEPROM.
parameter of EEPROM. Its value ranges from -6°C to 6°C. T1-Td • When T1-Ts>-ΔT3, the compressor ceases operation. • When T1-Ts<-ΔT3-1.5°C (2.7 °F), the compressor continues operation. • When the AC is operating in mute mode, the compressor operates at a low frequency. • When the current exceeds the preset value, the current protection function activates and the compressor ceases operation. 3.5.
• If any one of the following conditions is satisfied, defrosting ends and the machine switches to normal heating mode: • T3 rises above TCDE1. • T3 maintained above TCDE2 for 80 seconds. • Unit runs for 10 minutes consecutively in defrosting mode. 3.5.5 • Forced auto mode: Forced auto mode operates the same as normal auto mode with a preset temperature of 24°C (76°F).
failure, will restore those setting automatically within 3 minutes after power returns. • If the unit was in forced cooling mode, it will run in this mode for 30 minutes and turn to auto mode with temperature set to 24°C (76°F). • If there is a power failure while the unit is running, the compressor starts 3 minutes after the unit restarts. If the unit was already off before the power failure, the compressor starts 1 minute after the unit restarts. 3.
Maintenance Contents 1. First Time Installation Check......................................................................................................2 2 Refrigerant Recharging................................................................................................................4 3 Re-Installation.................................................................................................................................5 3.1 Indoor Unit...............................................
1. First Time Installation Check Air and moisture trapped in the refrigerant system affects the performance of the air conditioner by: • Increasing pressure in the system. • Increasing the operating current. Leak test (soap water method) • Decreasing the cooling or heating efficiency. • Congesting the capillary tubing due to ice build-up in the refrigerant circuit. • Corroding the refrigerant system.
Procedure: 1. Tighten the flare nuts of the indoor and outdoor units, and confirm that both the 2- and 3-way valves are closed. 2. Connect the charge hose with the push pin of Handle Lo to the gas service port of the 3-way valve. 3. Connect another charge hose to the vacuum pump. 4. Fully open the Handle Lo manifold valve. 5. Using the vacuum pump, evacuate the system for 30 minutes. • If the pressure successfully reaches -0.1 MPa (14.
2. Refrigerant Recharging mV V A V mA OFF A A mA A CO M V Procedure: 1. Close both 2- and 3-way valves. 8. 2. Slightly connect the Handle Lo charge hose to the 3-way service port. Operate the air conditioner in cooling mode to charge the system with liquid refrigerant. 9. 3. Connect the charge hose to the valve at the bottom of the cylinder. 4. If the refrigerant is R410A/R32, invert the cylinder to ensure a complete liquid charge. 5.
3. Re-Installation 3.1 Indoor Unit Capturing the refrigerant into the outdoor unit: Procedure: 1. Confirm that the 2- and 3-way valves are opened. 6. 2. Connect the charge hose with the push pin of Handle Lo to the 3-way valve’s gas service port. Close the 3-way valve so that the gauge rests between 0.3 MPa (43.5 Psi) and 0.5 MPa (72.5 Psi). 7. 3. Open the Handle Lo manifold valve to purge air from the charge hose for 5 seconds and then close it quickly.
Air Purging with Vacuum Pump: Procedure: 1. Tighten the flare nuts of the indoor and outdoor units, and confirm that both the 2- and 3-way valves are closed. 2. Connect the charge hose with the push pin of Handle Lo to the gas service port of the 3-way valve. 3. Connect another charge hose to the vacuum pump. 4. Fully open the Handle Lo manifold valve. 5. Using the vacuum pump, evacuate the system for 30 minutes. • If the pressure successfully reaches -0.1 MPa (14.
3.2 Outdoor Unit Evacuation for the Whole System: Procedure: 1. Confirm that the 2- and 3-way valves are opened. 2. Connect the vacuum pump to the 3-way valve’s service port. 3. Evacuate the system for approximately one hour. Confirm that the compound meter indicates -0.1 MPa (14.5Psi). 4. Close the valve (Low side) on the charge set and turn off the vacuum pump. 5. Wait for 5 minutes then check whether the gauge needle moves after turning off the vacuum pump.
Refrigerant Charging: mV V A V mA OFF A A mA A CO M V Procedure: 1. Close both 2- and 3-way valves. 7. 2. Slightly connect the Handle Lo charge hose to the 3-way service port. Fully open the Handle Lo manifold valve, 2- and 3-way valves. 8. 3. Connect the charge hose to the valve at the bottom of the cylinder. Operate the air conditioner in cooling mode to charge the system with liquid refrigerant. 9. 4.
Indoor Units Disassembly Contents 1. Dimension ........................................................................................................................................2 2. Indoor Unit Disassembly(9k~24k)............................................................................................3 3. 2.1 Front Panel ........................................................................................................................3 2.2 Electrical parts ............................
1. Dimensions Capacity Size Class W (in.) D (in.) H (in.
2. Indoor Unit Disassembly (9,000 ~ 24,000 BTU) 2.1. Front Panel Disassembly Procedure Illustration 1) Hold the front panel by the tabs on the both sides and lift it (see Fig. 1). Front Panel Tab Figure 1 2) Push up the bottom of an air filter (step 1), and then pull it out downwards (step 2) (see Fig. 2). Figure 2 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Open the horizontal louver and push the hook towards left to open it (see Figure 3). Horizontal Louver Hook Figure 3 4) Bend the horizontal louver lightly by both hands to loosen the hooks, then remove the horizontal louver (see Figure 4). Hook Figure 4 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 5) Pry the electrical cover by a screw driver, and rotate it towars left, then remove it (see Fig. 5). Figure 5 6) Disconnect the connector for display board (see Fig. 6). Figure 6 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 7) Slid the front panel side to side to release each axis (see Fig. 7 ). Figure 7 8) Open the screw cap and then remove the 3 screws (see Fig. 8). Figure 8 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 9) Release the hooks with hands . (see Fig. 9). Figure 9 10) Release the 5 hooks in the back (see Fig. 10). Figure 10 11) Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger (see Fig. 11). Figure 11 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 12) Release the 5 hooks of the vertical blades, then pull the vertical blades rightward and remove it (see Fig. 12). Figure 12 13) Remove 1 screw of the display board. (see Fig. 13). 14) Rotate the display board in the direction shown in the right picture. (see Fig. 13). Figure 13 Note: This section is for reference only. Actual unit appearance may vary.
2.2. Electrical Parts Disassembly (Antistatic gloves must be worn.) Note: Remove the front panel (refer to 2.1. Front Panel Disassembly) prior to disassembling electrical parts. Procedure Illustration Ground Screws 1) Cut the ribbon with a cutter, then pull out the coil temperature sensor (T2) (see Fig. 14). 2) Remove one fastening screw of the electronic control box and two screws used for the ground connection (see Fig. 14).
Procedure Illustration 4) Remove the fixed devices of the connectors (see Fig. 16). Figure 16 5) Disconnect the connectors of fan motor, the step motor and the T2 sensor (see Fig. 17). Figure 17 6) Open the left side plate of electronic control box (see Fig. 18). Figure 18 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 7) Open the two clips on the front of the electric box (see Fig. 19). Figure 19 8) Open the upper cover plate of electronic control box (see Fig. 20). Figure 20 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 9) Remove 1 screw and open the 2 clips along the direction indicated in right image (see Fig. 21). Figure 21 Display Board 10) Pull out the electrical main board along the direction indicated in right image to remove it (see Fig. 22). Terminal(1L) Terminal (W) Terminal (S) Pipe Temperature Sensor Room Temperature Sensor Figure 22 Note: This section is for reference only. Actual unit appearance may vary.
2.3. Evaporator Disassembly Note: Remove the front panel and electrical parts (refer to 2.1. Front Panel Disassembly and 2.2. Electrical Parts Disassembly) before disassembling the evaporator. Procedure Illustration 1) Disassemble the pipe holder located at the rear of the unit (see Fig. 23). Figure 23 2) Remove the 1 screw on the evaporator located at the fixed plate (see Fig. 24). Figure 24 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Release the hook on the evaporator (see Fig. 25). Figure 25 4) Remote the one screw on the evaporator located at the fixed plate (see Fig. 26). Figure 26 5) Pull out the evaporator (see Fig. 27). Figure 27 Note: This section is for reference only. Actual unit appearance may vary.
2.4. Fan Motor and Fan Disassembly Note: Remove the front panel, electrical parts and evaporator (refer to 2.1. Front Panel Disassembly, 2.2. Electrical Parts Disassembly, and 2.3. Evaporator Disassembly) prior to disassembling fan motor and fan. Procedure Illustration 1) Remove the two screws and remove the cover of the fan motor (see Fig. 28). Screws Figure 28 2) Remove the bearing sleeve (see Fig. 29). Figure 29 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Remove the fastening screw (see Fig. 30). 4) Pull out the fan motor and fan assembly from the side. Figure 30 Note: This section is for reference only. Actual unit appearance may vary.
2.5. Step Motor Disassembly Note: Remove the front panel and electrical parts (refer to 2.1. Front Panel Disassembly, 2.2. Electrical Parts Disassembly) before disassembling step motor. Procedure Illustration 1) Remove the two screws, then remove the step motor (see Fig. 31). Step Motor Figure 31 Note: This section is for reference only. Actual unit appearance may vary.
2.6. Drain Hose Removal Procedure Illustration 1) Rotate the fixed wire clockwise as depicted in right-hand image (see Fig. 32). Figure 32 2) Pull up the drain hose to remove it (see Fig. 33). Figure 33 Note: This section is for reference only. Actual unit appearance may vary.
3. Indoor Unit Disassembly (30,000 ~ 36,000 BTU) 3.1. Front Panel Procedure Illustration 1) Hold the front panel by the tabs on the both sides and lift it (see Fig. 1). Figure 1 2) Push up the bottom of an air filter (step 1), and then pull it out downwards (step 2) (see Fig. 2). Figure 2 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Open the horizontal louver(below) and bend the louver lightly to loosen the leftmost hook, then push the hook towards right to loosen the second hook (see Fig. 3). 4) Remove the horizontal louver(below) towards the left (see Fig. 3). Figure 3 5) Remove the horizontal louver(above) with the same way (see Fig. 4). Figure 4 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 6) Pry the electrical cover using a screw driver, and rotate it towards left, then remove it (see Fig. 5). Figure 5 7) Pull out the connector wire, and then disconnect the connector for display board (see Fig. 6). Figure 6 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 8) Slid the front panel side to side to release each axis (see Fig. 7). Figure 7 9) Open the screw caps and then remove the 4 screws (see Fig. 8). 10) Remove the 4 screws fixing the panel frame (see Fig. 8). Figure 8 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 11) Release the hooks with hands . (see Fig. 9). Figure 9 12) Release the 5 hooks in the back (see Fig. 10). Figure 10 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 13) Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger (see Fig. 11). Figure 11 14) Remove 1 screw of the display board. (see Fig. 12). Figure 12 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 15) Rotate the display board in the direction shown in the right picture (see Fig. 13). Figure 13 16) Remove 1 screw of the wifi module (see Fig. 14). Figure 14 17) Rotate the wifi module in the direction shown in the right picture (see Fig. 15). Figure 15 Note: This section is for reference only. Actual unit appearance may vary.
3.2. Electrical Parts Disassembly (Antistatic gloves must be worn.) Note: Remove the front panel (refer to 3.1. Front Panel Disassembly) prior to disassembling electrical parts. Procedure Illustration 1) Remove 2 fastening screws of the electrical control box subassembly (see Fig. 16). Figure 16 2) Disconnect the connectors (see Fig. 17). (If you want to repair the electrical control box components, perform the steps 1 & 2.
Procedure Illustration 3) Cut the ribbon with a cutter, then pull out the coil temperature sensor (T2) (see Fig. 18). 4) Remove one fastening screw of the electronic control box and two screws used for the ground connection (see Fig. 18). 5) Remove fixed clamp of temperature sensor (see Fig. 18). Figure 18 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 6) Pull out the electrical main board along the direction indicated in right image (see Fig. 19). Figure 19 7) Disconnect the connectors and remove main control board (see Fig. 20). Figure 20 Note: This section is for reference only. Actual unit appearance may vary.
3.3. Evaporator Disassembly Note: Remove the front panel and electrical parts (refer to 3.1. Front Panel Disassembly and 3.2. Electrical Parts Disassembly) before disassembling the evaporator. Procedure Illustration 1) Disassemble the pipe holder located at the rear of the unit (see Fig. 21). Figure 21 2) Remove the 3 screws on the evaporator located at the fixed plate (see Fig. 22). Figure 22 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Remove the 4 screws of the fan motor cover (see Fig. 23). Figure 23 4) Pull out the evaporator (see Fig. 24). Figure 24 Note: This section is for reference only. Actual unit appearance may vary.
3.4. Fan Motor and Fan Disassembly Note: Remove the front panel, electrical parts and evaporator (refer to 3.1. Front Panel Disassembly, 3.2. Electrical Parts Disassembly, and 3.3. Evaporator Disassembly) prior to disassembling fan motor and fan. Procedure Illustration 1) Remove the bearing sleeve (see Fig. 25). Figure 25 2) Remove the fastening screw (see Fig. 26). 3) Pull out the fan motor and fan assembly from the side. Figure 26 Note: This section is for reference only.
3.5. Step Motor Disassembly Note: Remove the front panel and electrical parts (refer to 3.1. Front Panel Disassembly, 3.2. Electrical Parts Disassembly) before disassembling step motor. Procedure Illustration 1) Remove the 3 screws, then remove the horizontal swing motor(above)(see Fig. 27). Figure 27 2) Remove the 2 screws, then remove the horizontal swing motor(below)(see Fig. 28). (For some units) 3) Remove 1 screw, then remove the ionizer generator (see Fig. 28).
Procedure Illustration (for some units) 4) Remove 1 screw, then remove the Positive and negative ion generator (see Fig. 29). Figure 29 (for some units) 5) Remove 2 screws, then remove the vertical swing motor (see Fig. 30). Figure 30 Note: This section is for reference only. Actual unit appearance may vary.
3.6. Drain Hose Removal Procedure Illustration 1) Pull up the drain hose to remove it (see Fig. 31). Figure 31 Note: This section is for reference only. Actual unit appearance may vary.
Outdoor Units Disassembly Contents 1. Outdoor Unit Matching Table......................................................................................................2 2. Outdoor Unit Dimensions............................................................................................................3 3. Outdoor Unit Disassembly..........................................................................................................7 3.1 Panel Plate Disassembly .....................................
1. 1.1 Outdoor Unit Table Outdoor Unit Panel Type and PCB Matching Table Refer to the following table to determine the reference plate and PCB configuration for each outdoor unit model.
2. Outdoor Unit Dimensions 2.
2.2 Outdoor Unit Dimensions of Panel Plate PT-2 Scope of Models Covered: YN018GMFI20RPD 21”-13/16 (554) 13” (330) 20”-1/8 (511) 31”-11/16 (805) 34”-7/16 (874) 1”-15/16 (49) 17”-11/16 (449) 1”-5/16 (32.7) Outdoor Unit Disassembly 4 13”-5/8 (346) 12”-1/2 (317) 12”-1/16 (307) 2”-3/8 (60) R1” (R26) R3/16” (R5) 3”-3/4 (95) 7/16” (11.
2.
2.
3. Outdoor Unit Disassembly 3.1. Panel Plate Disassembly 3.1.1. Panel Plate Disassembly (PT-1, PT-2) Scope of Models Covered: YN009GMFI22RPE / YN009GMFI20RPD / YN012GMFI22RPE / YN012GMFI20RPD / YN018GMFI20RPD YN009AMFI22RPE / YN009AMFI20RPD / YN012AMFI22RPE / YN012AMFI20RPD Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the big handle and then remove the big handle (1-3 screws) (see Fig. 1).
Procedure Illustration 4) Remove the screws of the valve cover and then remove the valve cover (2 screws) (see Fig. 3). Valve Cover Figure 3 5) Remove the screws of the front panel and then remove the front panel (9 screws) (see Fig. 4). Front Panel Figure 4 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 6) Remove the screws of the right panel and then remove the right panel (5 screws) (see Fig. 5). Right Panel Figure 5 Note: This section is for reference only. Actual unit appearance may vary.
3.1.2. Panel Plate Disassembly (PT-3) Scope of Models Covered: YN018GMFI22RPE / YN024GMFI20RPD Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the big handle and then remove the big handle (1-3 screws) (see Fig. 1). Big Handle (Some Models) 3 Screws Figure 1 Top Cover 3) Remove the screws of the top cover and then remove the top cover (3 screws). One of the screws is located underneath the big handle (see Fig. 2).
Procedure Illustration 4) Remove the screws of the valve cover and then remove the valve cover (2 screws) (see Fig. 3). Valve Cover Figure 3 5) Remove the screws of the front panel and then remove the front panel (9 screws) (see Fig. 4). Front Panel Figure 4 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 6) Remove the screws of the right panel and then remove the right panel (6 screws) (see Fig. 5). Right Panel Figure 5 Note: This section is for reference only. Actual unit appearance may vary.
3.1.3. Panel Plate Disassembly (PT-4) Scope of Models Covered: YN024GMFI22RPE / YN030GMFI20RPD / YN036GMFI20RPD Procedure Illustration 1) Turn off the air conditioner and the power breaker. Big Handle 2) Remove the screws of the big handle and then remove the big handle (2-3 screws) (see Fig. 1). (Some Models) 3 Screws Figure 1 Top Cover 3) Remove the screws of the top cover and then remove the top cover (4 screws). Two of the screws are found underneath the big handle (see Fig. 2).
Procedure Illustration 4) Remove the screws of the front right panel and then remove the front right panel (2 screws) (see Fig. 3). Front Right Panel Figure 3 5) Remove the screws of the front panel and then remove the front panel (9 screws) (see Fig. 4). Figure 4 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 6) Remove the screws of the valve cover and then remove the valve cover (2 screws) (see Fig. 5). Valve Cover Figure 5 7) Remove the screws of the right panel and then remove the right panel (8 screws) (see Fig. 6). Right Panel Figure 6 Note: This section is for reference only. Actual unit appearance may vary.
3.2 Electrical Components Disassembly WARNING: Antistatic gloves must be worn when you disassemble the electronic box. Note: Remove the air outlet grille (refer to 3.1 Panel Plate Disassembly) prior to disassembling electrical parts. 3.2.1.
3.2.2. Electronic Control Box Subassembly Removal (EW-3) Scope of Models Covered: YN018GMFI22RPE / YN024GMFI20RPD / YN024GMFI22RPE Procedure Illustration 1) Remove the 5 screws, and release two hooks, then remove the electronic control box subassembly. see Fig. 1). Note: Electric control box cover cannot be removed. Figure 1 Note: This section is for reference only. Actual unit appearance may vary.
3.2.3. Electronic Control Box Subassembly Removal (EW-4) Scope of Models Covered: YN030GMFI20RPD / YN036GMFI20RPD Procedure Illustration 1) Release the hooks, and then open the cover (4 hooks total)(see Fig. 1). Figure 1 2) Remove 6 screws on the electronic control board and then remove the electronic control box subassembly . (see Fig. 2). Note: Electric control box cover cannot be removed. Figure 2 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Pull out the connector, remove one screw and then remove the key board subassembly on terminal board. (see Fig. 3). Figure 3 Note: This section is for reference only. Actual unit appearance may vary.
3.3 3.3.1. Fan Assembly Disassembly Fan Blade Removal Note: Remove the air outlet grille (refer to 3.1 Panel Plate Disassembly) prior to disassembling fan parts. Procedure Illustration 1) Remove the nut securing the fan with a spanner (see Fig. 1). 2) Remove the fan blade. Figure 1 Note: This section is for reference only. Actual unit appearance may vary.
3.3.2. Fan Motor Removal Note: Remove the panel plate and the connection of fan motor on PCB (refer to 3.1 Panel Plate Disassembly and 3.2 Electrical Components Disassembly) prior to disassembling fan motor. Procedure Illustration 3) Remove the fastening screws of the fan motor (4 screws) (see Fig. 1). 4) Remove the fan motor. Figure 1 Note: This section is for reference only. Actual unit appearance may vary.
3.4 Insulation Blanket Removal Note: Remove the panel plate (refer to 3.1 Panel Plate Disassembly) before removing the insulation blanket. Procedure Illustration 1) Remove the insulation blanket (side and top) (see Fig. 1). Insulation Blanket(Top) (Applicable to models with blanket) Insulation Blanket(Side) (Applicable to models with blanket) Figure 1 Note: This section is for reference only. Actual unit appearance may vary.
3.5 Four-Way Valve Removal WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (The operation below should be performed by professionals.) (For R32/R290 systems, evacuate the system with the vacuum pump, flush the system with nitrogen, and repeat those two steps prior to heating up the brazed parts.) Note: Remove the panel plate, connection of four-way valve on PCB (refer to 3.1 Panel Plate Disassembly and 3.
3.6 Compressor Removal WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (The operation below should be performed by professionals.) (For R32/R290 systems, evacuate the system with the vacuum pump, flush the system with nitrogen, and repeat those two steps prior to heating up the brazed parts.) Note: Remove the panel plate, connection of four-way valve on PCB (refer to 3.1 Panel Plate Disassembly and 3.
Procedure Illustration 3) Remove the hex nuts and washers that secure the compressor, located on the bottom plate (see Fig. 3). Figure 3 Suction Pipe 4) Heat up the brazed parts and then remove the discharge pipe as well as the suction pipe (see Fig. 4). 5) Lift the compressor from the base pan assembly by using pliers. Discharge Pipe Figure 4 Note: This section is for reference only. Actual unit appearance may vary.
Troubleshooting Contents 1. Safety Caution.............................................................................................................................................................3 2. General Troubleshooting.........................................................................................................................................4 3. Complain Record Form.....................................................................................................................
Troubleshooting Contents 8. 7.8 F0/PC 08 (Current overload protection diagnosis and solution)...........................................29 7.9 P0/PC 00 (IPM malfunction or IGBT over-strong current protection diagnosis and solution) .................................................................................................................................................30 7.10 P1/PC 01 (Over voltage or too low voltage protection diagnosis and solution) .................31 7.
1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board. WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. Test the voltage between P and N on back of the main PCB with multimeter.
2. General Troubleshooting 2.1 Error Display (Indoor Unit) When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer lamp may turn on or begin flashing, and an error code will be displayed.
For some models Operation Lamp Timer Lamp 1 time OFF 2 times LED Display Error Information Solution Indoor unit EEPROM parameter error TS19 OFF EH 00/ EH 0A EL 01 Indoor / outdoor unit communication error TS20 3 times OFF EL 02 Zero-crossing signal detection error(for some models) TS22 4 times OFF EL 03 The indoor fan speed is operating outside of the normal range TS23 5 times OFF Ec 51 Outdoor unit EEPROM parameter error(for some models) TS19 5 times OFF Ec 52 5 times OFF
LED Flash Frequency: ... ... 2.2 Error Display (For Some Outdoor Units) There are 2 LED lights (RED color and GREEN color) welded in outdoor main board. After power on, LED show different actions when encounter different problems. No.
3. Complaint Record Form Complaint Record Form Request No.: Date: Installation Date: Service Date: Customer Information Name Telephone No. Home Address Email Product Information Indoor Unit Model Outdoor Unit Model Serial No. of indoor unit Serial No.
Parameter Checking information by Remote controller Displaying code Displaying code meaning T1 Room temperature T2 Indoor coil temperature T3 Outdoor coil temperature T4 Ambient temperature Tb Outlet temperature of indoor coil TP Discharge temperature TH Sunction temperature FT Targeted Frequency Fr Actual Frequency IF Indoor fan speed OF Outdoor fan speed LA EXV opening steps CT Compressor continuous running time ST Causes of compressor stop.
4. Information Inquiry • To enter information inquiry status, complete the following procedure within ten seconds: 1. Press LED(or DO NOT DISTURB) 3 times. 2. Press SWING(or AIR DIRECTION) 3 times. • Finish 1 and 2 within 10 seconds, you will hear beeps for two seconds , which means the unit goes into parameter checking mode. • Use the LED(or DO NOT DISTURB) and SWING(or AIR DIRECTION)buttons to cycle through information displayed.
Displayed code Displayed value Explanation T1 Room temperature T2 Indoor coil temperature T3 Outdoor coil temperature T4 Ambient temperature Tb Outlet temperature of indoor coil TP Discharge temperature Meaning Additional Notes 1. All displayed temperatures use actual values. -1F,-1E,-1d,-1c,- -25,-24,-23,-22, 1b,-1A -21,-20 2. All temperatures are displayed in °C regardless of remote used.
Displayed code Explanation Displayed value Meaning Additional Notes A0 A1 b0 b1 b2 b3 0-FF b4 b5 b6 b0 Reserved 2-28 5-20 - 5-25 ab ub tb ba b5 bt Troubleshooting 11 -
5. Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury. 5.1 Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers prior to field maintenance. No.
5.2 Field maintenance No.
☆ ☆ Test method / remedy Troubleshooting 14 ☆ Turn on the AC later Turn on the AC later Turn off the silence feature ☆ Adjust to cool mode Frosting and defrosting frequently Silence feature is activated (optional function) Fan mode The ambient temperature is too high/low when the mode is cooling/heating The setting temperature is higher/lower than the room’s (cooling/heating) Dirty condenser fins Dirty air filter The remote control is broken The remote control is powered off Loose conne
Shipping plates remain attached Interference from cell phone towers and remote boosters The air inlet or outlet of either unit is blocked Heavy load condition Possible causes of trouble Bad airproof Others Loosen hold down bolts and / or screws 1.
Test method / remedy Troubleshooting 16 ☆ ☆ ☆ ☆ ☆ Rectify piping so as not to contact each other or with external plate ☆ Choose AC of lager capacity or add the number of AC Compressor is noisy ☆ ☆ ☆ Remove them ☆ ☆ ☆ ☆ ☆ Contact of piping with other piping or external plate Poor choices of capacity Shipping plates remain attached Loosen hold down bolts and / or screws Heavy load condition Poor installation of feeler bulb Leaking power element on expansion valve Expansion valve or capill
Test method / remedy Condenser (Outdoor) fan will not start ☆ ☆ Unit runs, but shortly stops ☆ ☆ Compressor short-cycles due to overload ☆ ☆ ☆ ☆ Troubleshooting 17 Check resistance with multimeter ☆ ☆ ☆ ☆ Check resistance with multimeter ☆ Evaporator (Indoor) fan will not start Replace the stepping motor Compressor and condenser fan will not start Test voltage ☆ Test continuity of coil & contacts ☆ Test continuity of coil & contacts Compressor will not start but fans run Check capaci
6. Quick Maintenance by Error Code If you do not have the time or tools to test which specific parts are faulty, you can directly change the required parts according to the error code. You can find the parts to replace by error code in the following table.
7. Troubleshooting by Error Code 7.1 E0/EH 00/EH 0A / F4/EC 51 (EEPROM parameter error diagnosis and solution) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later. Is it still displaying the error code? NO The unit is operating normally . YES Replace the indoor main PCB(E0/EH 00 ) / outdoor main PCB(F4/EC 51).
7.2 E1/EL 01 (Indoor and outdoor unit communication error diagnosis and solution) Description: Indoor unit cannot communicate with outdoor unit. Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Short-circuited component Troubleshooting and repair: Note: For certain models, outdoor PCB cannot be removed separately. In this case, the outdoor electric control box should be replaced as a whole.
Remarks: • Use a multimeter to test the DC voltage between #2 port(or S/L2 port) and #3 port(or N/S port) of outdoor unit. The red pin of multimeter connects with 2 port(or S or L2 port), while the black pin is for 3 port(or N or S port). • When the AC is normal running, the voltage is moving alternately between positive values and negative values. • If the outdoor unit has faulted, the voltage will fluctuate at positive values. • If the indoor unit has faulted, the voltage will remain at a certain value.
7.3 E2/EH 02 (Zero crossing detection error diagnosis and solution) Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Recommended parts to prepare: • Connection wires • PCB Troubleshooting and repair: Check the connections and power supply. Is it normal? NO Correct the connections. Turn on the unit when the power supply is proper. YES Indoor main PCB is defective. Replace indoor main PCB.
7.4 E3/EH 03 / F5/EC 07 (Fan speed is operating outside of normal range diagnosis and solution) Description: When indoor / outdoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off. Recommended parts to prepare: • Connection wires • Fan assembly • Fan motor • PCB Troubleshooting and repair: Power off, then restart the unit after 2 minutes.
Index: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not within the range showing in table below, the PCB has faulted and needs to be replaced. • DC motor voltage input and output (voltage: 220-240V~): No. Color Signal Voltage 1 Red Vs/Vm 280V~380V 2 --- --- --- 3 Black GND 0V 4 White Vcc 14-17.5V 5 Yellow Vsp 0~5.
3. Indoor DC Fan Motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply) or 50V (115V power supply), the PCB faulted and needs to be replaced.
7.5 E4/EH 60/E5/EH 61/F1/EC 53/F2/EC 52/F3/EC 54/F6/EC56 (Open circuit or short circuit of temperature sensor diagnosis and solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Sensors • PCB Troubleshooting and repair: Check the connection between temperature sensor and PCB. Is it properly wired? NO Ensure proper connections. YES Measure the resistance value of the sensor.
7.6 E7/EH 0b (Indoor PCB / Display board communication error diagnosis and solution) Description: Indoor PCB does not receive feedback from the display board.
7.7 EC/EL 0C (Refrigerant Leakage Detection diagnosis and solution) Description: Define the evaporator coil temperature T2 of the compressor just starts running as Tcool. In the first 5 minutes after the compressor starts up, if T2 < Tcool-1°C(1.8°F) does not keep continuous 4 seconds and compressor running frequency higher than 50Hz does not keep for 3 minutes, and this situation happens 3 times, the LED displays the failure code and the AC turns off.
7.8 F0/PC 08 (Current overload protection diagnosis and solution) Description: An abnormal current rise is detected by checking the specified current detection circuit.
7.9 P0/PC 00(IPM malfunction or IGBT over-strong current protection diagnosis and solution) Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the LED displays the failure code and the AC turns off. Recommended parts to prepare: • Connection wires • IPM module board • Outdoor fan assembly • Compressor • Outdoor PCB Troubleshooting and repair: Check the wiring between PCB and compressor.
7.10 P1/PC 01(Over voltage or too low voltage protection diagnosis and solution) Description: Abnormal increases or decreases in voltage are detected by the specified voltage detection circuit. Recommended parts to prepare: • Power supply wires • IPM module board • PCB • Reactor Troubleshooting and repair: Check the power supply. Getting proper input voltage ? Turn off the unit until supply voltage is fixed. NO YES Check the connections and wires.
7.11 P2/PC 02(High temperature protection of IPM module or High pressure protection diagnosis and solution) Description: If the temperature of IPM module is higher than a certain value, the LED displays the failure code. For some models with high pressure switch, outdoor pressure switch cut off the system because high pressure is higher than 638 PSI, and then the LED displays the failure code.
High pressure protection Are the high pressure switch and main control board wired correctly? No Connect high pressure switch and main control board Yes Is the high pressure protector defective? Method : Disconnect the plug. Measure the resistance of the high pressure protector. If the protector is normal the value is 0.
7.12 P4/PC 04(Inverter compressor drive error diagnosis and solution) Description: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Recommended parts to prepare: • Connection wires • IPM module board • Outdoor fan assembly • Compressor • Outdoor PCB Troubleshooting and repair: Check the wiring between PCB and compressor.
7.13 P6/PC 03(High pressure protection or Low pressure protection diagnosis and solution) Description: Outdoor pressure switch cut off the system because high pressure is higher than 638 PSI or outdoor pressure switch cut off the system because low pressure is lower than 19 PSI, the LED displays the failure code.
Low pressure protection Are the low pressure protector and main control board wired properly ? No Reconnect the low pressure protector and main control board Yes Is the low pressure protector defective? Method : Disconnect the plug. Measure the resistance of the low pressure protector. If the protector is normal the value is 0.
8. Check Procedures 8.1 Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. Operate after compressor and coil have returned to normal temperature to avoid risk of injury. 1. Disconnect the temperature sensor from PCB (Refer to Chapter 5 & 6, “Indoor & Outdoor Unit Disassembly”). 2. Measure the resistance value of the sensor using a multi-meter. 3. Check corresponding temperature sensor resistance value table (Refer to Chapter 8. Appendix).
Resistance Value KSK103D33UEZ3 KSN98D64UFZ3 KSN140D21UFZ KTM240D43UKT KTF250D22UMT KSN140D58UFZ 2.13Ω 2.75Ω 1.28Ω 1.03Ω 0.75Ω 1.
8.3 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Turn off outdoor unit and disconnect power supply. 2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged. 3. Disassemble outdoor PCB or disassemble IPM board. 4. Measure the resistance value between P and U(V, W, N); U(V, W) and N.
8.5 4-way Valve Check 1. Power on the system, and use a digital tester to measure the voltage. When the unit operates in cooling, it is 0V. When the unit operates in heating, it is about 230VAC. If the value of the voltage is not in the range, the PCB has faulted and needs to be replaced. 6 5 4 3 2 1 Red Brown Blue Orange Yellow White 2. Turn off the power, and use a digital tester to measure the valve’s resistance. The value should be 1.8~2.5 KΩ.
8.6 EEV Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Disconnect the connector from outdoor PCB. 2. Measure the resistance value of each winding using a multi-meter. 3. Check the resistance value of each winding in the following table.
Appendix Contents i) Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K)...............2 ii) Temperature Sensor Resistance Value Table for TP (for some units)(°C --K)..........3 iii) Pressure On Service Port ...........................................................................................................
i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – °F - K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm -20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973 -19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148 -18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386 -17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683 -16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038 -15 5 84.
ii) Temperature Sensor Resistance Value Table for TP(for some units) (°C - °F - K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm -20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702 -19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595 -18 0 483 22 72 62.73 62 144 12.65 102 216 3.492 73 59.98 63 145 12.21 103 217 3.392 -17 1 455.9 23 -16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296 -15 5 406.7 25 77 54.89 65 149 11.
iii) Pressure On Service Port Cooling chart(R410A): °F(°C) BAR ODU(DB) 0(-17) 5(-15) 15 (-9.44) 45 (7.22) 75 (23.89) 85 (29.44) 95 (35) 105 (40.56) 115 (46.11) 120 (48.89) 70/59 (21.11/15) 6.4 6.5 7.3 8.0 8.2 7.8 8.1 8.6 10.1 10.6 75/63 (23.89/17.22) 6.7 6.8 7.9 8.6 8.6 8.3 8.7 9.1 10.7 11.2 IDU(DB/WB) 80/67 (26.67/19.44) 7.1 7.2 8.5 9.5 9.3 8.9 9.1 9.6 11.2 11.9 90/73 (32.22/22.78) 7.7 7.8 9.6 10.5 10.3 9.5 10.0 10.6 12.4 13.
Heating chart (R410A) : °F(°C) ODU(DB/WB) IDU(DB) 55(12.78) BAR PSI MPa 57/53 (13.89/11.67) 47/43 (8.33/6.11) 37/33 (2.78/0.56) 27/23 (-2.78/-5) 17/13 (-8.33/-10.56) 0/-2 (-17/-19) -17/-18 (-27/-28) 30.3 28.5 25.3 22.8 20.8 18.5 16.5 65(18.33) 32.5 30.0 26.6 25.4 23.3 20.5 19.0 75(23.89) 33.8 31.5 27.8 26.3 24.9 21.5 20.0 55(12.78) 439 413 367 330 302 268 239 65(18.33) 471 435 386 368 339 297 276 75(23.89) 489 457 403 381 362 312 290 55(12.78) 3.
System Pressure Table-R410A Pressure Temperature Pressure Temperature Kpa bar PSI °C °F Kpa bar PSI °C °F 100 1 14.5 -51.623 -60.921 2350 23.5 340.75 38.817 101.871 150 1.5 21.75 -43.327 -45.989 2400 24 348 39.68 103.424 200 2 29 -36.992 -34.586 2450 24.5 355.25 40.531 104.956 250 2.5 36.25 -31.795 -25.231 2500 25 362.5 41.368 106.462 300 3 43.5 -27.351 -17.232 2550 25.5 369.75 42.192 107.946 350 3.5 50.75 -23.448 -10.
