Maintenance; Failure Code - Aiwa -09CHSRINV/TP11 Service Manual

3. Maintenance

3.1 Failure code

Code
E0 IDU & ODU Communication failure
IDU Room Temperature sensor failure.（IDU RT
E1
failure）
IDU Coil temperature sensor failure.（IDU IPT
E2
failure）
E3 ODU Coil temperature sensor failure. (OPT)
E4 AC Cooling system abnormal
IDU/ODU mismatched failure (specially
E5
performance test on the production line)
IDU PG Fan motor / DC fan motor works abnormal
E6
（IDU failure）
E7 ODU Ambient Temperature sensor failure
E8 ODU Discharge Temperature sensor failure.
E9 IPM / Compressor driving control abnormal.
EA ODU Current Test circuit failure
The Communication abnormal of Main PCB and
Eb
Display board（IDU failure）
EE ODU EEPROM failure.
EF ODU DC fan motor failure.
EU ODU Voltage test circuit abnormal.
P0 IPM module protection.
P1 Over / under voltage protection.
P2 Over current protection.
P4 ODU Discharge pipe Over temperature protection.
P5 Sub-cooling protection on Cooling mode.
P6 Overheating protection on Cooling mode.
P7 Overheating protection on Heating mode.
Outdoor Over temperature/Under temperature
P8
protection.
P9 Compressor driving protection (Load abnormal).
Communication failure for TOP flow unit/ Preset
PA
mode conflict. （IDU failure）
Infrared Customer feeling test sensor failure. （IDU
F0
failure）
Electric Power test module failure. （IDU failure）
F1
Discharge temperature sensor failure
F2
PROTECTION.
F3 ODU coil temperature failure PROTECTION..
Air Conditioner Service Manual
Reason Remark
The IDU & ODU wiring connection correct?
IDU sensor and PCB.
IDU sensor and PCB.
ODU coil sensor and ODU PCB
Gas leakage? 2-way or 3-way valve blocked
etc.
/
Fan motor, fan blade and PCB.
ODU ambient sensor and ODU PCB.
ODU discharge sensor and ODU PCB.
ODU PCB , compressor, etc.
ODU PCB broken?
Display board and main PCB.
1. ODU PCB broken?
2. Try to re-power on AC unit.
Fan motor, ODU PCB.
ODU PCB.
ODU PCB
1. ODU PCB broken?
2. Power supply abnormal?
1. ODU PCB broken?
2. Power supply abnormal?
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
Querying by press remote controller
Querying by press remote controller
Please check the troubleshooting for detail.
Please check the troubleshooting for detail.
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