SOPHIA SPLIT AIR CONDITIONER WITH HEAT PUMP TROUBLESHOOTING
1.
1.2 Outdoor unit error display(TBD) For CH-09SPH-115VO, CH-12SPH-115VO, CH-09SPH-230VO, CH-12SPH-230VO， connect to PFC Capacitor when is on, 100-130V AC output C3 + L5 L3 L4 CAP CN4_1CN4_2 L2 + E2 Ear t h connect to reactor when is on, 100-130V AC output US- KFR- 35W/ BP3N1- ( 115V+RX62T+41560) . D. 13.
For CH-09SPH-230VO, CH-12SPH-230VO, CH-18SPH-230VO, CH-18SPH-230VO FUSE1 20A/250VAC slow flicker:standby（0.5Hz） quick flicker:error（2Hz） continuous light: normally running Connect to reactor power suppl y connect to earth C1 ZR5 C2 ZR4 ZR2 CN1 CN2 CN16 C16 W V U R117 R116 R104 C114 R518 R517 R520 R522 N N 4- WAY C117 R528 R172 C508 C507 C506 C505 C504 C503 C275 C111 CN21/CN22 exhaust temp. sensor& pipe temp.sensor& room temp.
For CH-24SPH-230VO, [ V1.
After power on, LED3(Green color) and LED2(Red color) will be flash if the unit has some problems. No.
+12V DC pulse wave between (+2)-GND +12V DC pulse wave between (+1)-GND +12V DC +12V DC Connect to the Indoor evap.pipe out temp. sensor T2B-A、T2B-B、T2B-C、T2B-D、T2B-E +12V DC pulse wave between (+4)-GND +12V DC pulse wave between (+3)-GND For CH-S30FTXW-SV, CH-S36FTXW-SV, external drive DC fan motor connector 6 5 4 3 2 1 connect to exhaust temp.
IPM board, connect to DC fan motor 0VAC ( st andby) 10- 200VAC ( r unni ng) TO MAI N CN55 CN19 W V CN55 OUTFAN(DC) + EU- KFR105W/ BP2T3N1- 350( 767) . D. 13.
1.3 Diagnosis and Solution 1.3.1 EEPROM parameter error diagnosis and solution(E0/F4) Error Code E0/F4 Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Supposed causes ● ● Installation mistake PCB faulty Trouble shooting: Power off, then restart the unit 2 minutes later. Yes Replace the indoor/outdoor main PCB. EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
1.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code E1 Malfunction decision conditions Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously. ● Wiring mistake ● Indoor or outdoor PCB faulty Supposed causes Trouble shooting: Power Power off, off, then then restart restart the the unit unit 22 minutes minutes later. later. Is Is the the error error extinguished? extinguished? No Measure Measure Vs.
Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is normal running, the voltage will move alternately between -25V to 25V. If the outdoor unit has malfunction, the voltage will move alternately with positive value. While if the indoor unit has malfunction, the voltage will be a certain value.
1.3.3 Zero crossing detection error diagnosis and solution (E2) Error Code E2 Malfunction decision conditions When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Supposed causes ● ● Connection mistake PCB faulty Trouble shooting: Check if the connections and power supply is normal? Yes Indoor main PCB is defective. Replace indoor main PCB. No Correct the connections. Turn on the unit when the power supply is good.
1.3.4 Fan speed has been out of control diagnosis and solution(E3) Error Code E3/F5 Malfunction decision conditions When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure. Supposed causes ● ● ● ● Wiring mistake Fan ass’y faulty Fan motor faulty PCB faulty Trouble shooting: Power off, then restart the unit 2 minutes later No The unit operates normally. No Find out the cause and have it solved No Correct the connections.
Index 1: 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 in the range showing in below table, the PCB must has problems and need 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 0~5.6V 6 Blue FG 14-17.
1.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5) Error Code E4/E5/F1/F2/F3 Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure. Supposed causes ● ● ● Wiring mistake Sensor faulty PCB faulty Trouble shooting: Check the connection between temperature sensor and PCB.
1.3.6 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code EC Malfunction decision conditions Define the evaporator coil temp.T2 of the compressor just starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－2°C(Tcool－35.6°F) does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC” and AC will turn off.
1.3.6 Overload current protection diagnosis and solution(F0) Error Code F0 Malfunction decision conditions Supposed causes An abnormal current rise is detected by checking the specified current detection circuit. ● Power supply problems. ● System blockage ● PCB faulty ● Wiring mistake ● Compressor malfunction Trouble shooting: Check the power supply. Is it normal? No Stop the unit.
1.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0) Error Code P0 Malfunction decision conditions When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off. Supposed causes ● ● ● ● ● Wiring mistake IPM malfunction Outdoor fan ass’y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting: For 9K~24K: Check if the wiring between main PCB and compressor .
For example: Note: The photos below are only for reference, it’s may be not same totally with the ones on your side.
P-W N-U
N-V N-W
For 30K~36K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Check Check whether whether the the power power voltage voltage is is normal. normal.
1.3.8 Over voltage or too low voltage protection diagnosis and solution(P1) Error Code P1 Malfunction decision conditions Supposed causes An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit. ● Power supply problems. ● System leakage or block ● PCB faulty Trouble shooting: Check the power supply No Stop the unit No Correct the connections or replace the wires.
1.3.9 High temperature protection of IPM module or compressor top diagnosis and solution(P2) Error Code P2 Malfunction decision conditions Supposed causes If the sampling voltage is not 5V, the LED will display the failure. ● ● ● ● Installation mistake Power supply problems. System leakage or block PCB faulty Trouble shooting: For 18K,24K, Check if the Fastening screws on the PCB and IPM radiator are fixed tightly.
1.3.10 Inverter compressor drive error diagnosis and solution(P4) Error Code P4 Malfunction decision conditions 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.
Digital tester (+)Red (-)Black N U P V W Normal resistance value ∞ (Several MΩ) Digital tester (+)Red (-)Black U V N W (+)Red Normal resistance value ∞ (Several MΩ) For 30K~36K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Check Check whether whether the the power power voltage voltage is is normal. normal.
1.3.11 Low pressure protection diagnosis and solution(P6) Error Code P6 Malfunction decision conditions When the pressure of system reach a certain value, the low pressure protector will switch off. After the pressure resume to normal ,the protection code will disappear. ● Wiring mistake ● Pressure protector faulty ● Fan motor faulty ● PCB faulty ● System problems.
Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(TP) sensor. Measure the resistance value of each winding by using the multi-meter.
Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--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.
Appendix 2 Temperature Sensor Resistance Value Table for TP (°C --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 -17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392 -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 11.38 105 221 3.203 -14 7 384.
Appendix 3: °C °F °C -5 23 21 -4 24.8 22 9ΔT(℃) ΔT(℉) = 5 -3 26.6 23 -2 28.4 24 -1 30.2 0 32 0.5 32.9 °F °C °F °C °F °C °F 69.8 51 123.8 82 179.6 113 235.4 71.6 52 125.6 83 181.4 114 237.2 73.4 53 127.4 84 183.2 115 239 75.2 54 129.2 85 185 116 240.8 25 77 55 131 86 186.8 117 242.6 25.5 77.9 56 132.8 87 188.6 118 244.4 26 78.8 57 134.6 88 190.4 119 246.2 1 33.8 27 80.6 58 136.4 89 192.2 120 248 1.5 34.7 28 82.
Appendix 4 1.
2. Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASN98D22UFZ ASM135D23UFZ ATF235D22UMT 1.75 Ω 0.75 Ω ATF250D22UMT Blue - Red Blue - Black Red - Blue 1.57Ω 0.
3. Fan Motor Measure the resistance value of each winding by using the tester. Model YKT-32-6202L Tongde YKT-32-63L Welling YKT-48-6206 Welling YKT-63-6200L Welling Ω 86 213 152 88.
4. Pressure On Service Port Cooling chart: °F(°C) ODT IDT BAR BAR BAR °F(°C) 70/59 75/63 80/67 ODT IDT PSI PSI PSI °F(°C) MPA MPA MPA 70/59 75/63 80/67 ODT IDT 70/59 75/63 80/67 75 (23.89) 8.2 8.6 9.3 85 (29.44) 7.8 8.3 8.9 95 (35) 8.1 8.7 9.1 105 (40.56) 8.6 9.1 9.6 115 (46.11) 10.1 10.7 11.2 75 (23.89) 119 124 135 85 (29.44) 113 120 129 95 (35) 117 126 132 105 (40.56) 125 132 140 115 (46.11) 147 155 162 75 (23.89) 0.82 0.86 0.93 85 (29.44) 0.78 0.83 0.89 95 (35) 0.81 0.87 0.
Heating Chart: °F (°C) ODT IDT BAR BAR BAR °F (°C) 55 65 75 ODT IDT PSI PSI PSI °F (°C) MPA MPA MPA 55 65 75 ODT IDT 55 65 75 57/53 (13.89/11.67) 30.3 32.5 33.8 47/43 (8.33/6.11) 28.5 30.0 31.5 37/33 (2.78/0.56) 25.3 26.6 27.8 27/23 (-2.78/-5) 22.8 25.4 26.3 17/13 (-8.33/-10.56) 20.8 23.3 24.9 57/53 (13.89/11.67) 439 471 489 47/43 (8.33/6.11) 413 435 457 37/33 (2.78/0.56) 367 386 403 27/23 (2.78/-5) 330 368 381 17/13 (-8.33/-10.56) 302 339 362 57/53 (13.89/11.67) 3.03 3.25 3.38 47/43 (8.
1 Front panel How to remove the front panel. 1) Pull the below side of the panel toward you and remove screw of the cover. 2) Release the connector of the display ass’y. 3) Release the two clips and ①1 screw then remove the panel. 4) Remove the filter and the horizontal louver. ② 5) Remove the three screws and then remove the panel ass’y.
2 Electrical parts How to remove the electrical parts. 1) Remove the front ② panel from procedure 1. 2) Pull out the room temp. sensor (T1). Remove the two screws for the ground ③ connection. 3) Remove the fixing screw. 4) Pull out the coil temp. sensor. ④ 5) From the side direction, open the electronic control box cover fixing by clips. Pull out the fan motor connector and swing motor connector. Then remove the electronic control box.
