Kaisai KFU-09HRDN1-QRC8GW, Service Manual

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9. Troubleshooting
9.1 Indoor Unit Error Display
Operation lamp Timer lamp Display LED STATUS
☆
1 time X E0 Indoor unit EEPROM parameter error
☆
2 times X E1 Indoor / outdoor units communication error
☆
3 times X E2
Zero crossing signal detection error(only for
MS12FU-09HRDN1-QRC8W, MS12FU-09HRDN1-QRC8GW,
MS12FU-12HRDN1-QRC8GW, MS12F-24HRDN1-QRC8GW)
☆
4 times X E3 Indoor fan speed has been out of control
☆
5 times X E4
Open circuit or short circuit of indoor room temperature T1
sensor
☆
6 times X E5
Open circuit or short circuit of evaporator coil temperature
T2 sensor
☆
7 times X EC Refrigerant Leakage Detection
☆
2 times
O F1
Open circuit or short circuit of outdoor ambient T4
temperature sensor
☆
3 times O F2
Open circuit or short circuit of condenser coil temperature
T3 sensor
☆
4 times O F3
Open circuit or short circuit of compressor discharge T5
temperature sensor
☆
5 times O F4 Outdoor unit EEPROM parameter error
☆
6 times O F5 Outdoor fan speed has been out of control
☆
1 times
☆
P0 IPM malfunction or IGBT over-strong current protection
☆
2 times
☆
P1 Over voltage or over low voltage protection
☆
3 times
☆
P2
High temperature protection of compressor top diagnosis
and solution(Only for KFU-24HRFN1-QRC8W,
KFU-24HRFN1-QRD0GW and KFU-24HRDN1-QRC8GW
models)
☆
5 times
☆
P4 Inverter compressor drive error
O
（
light
）
X
（
off
） ☆（
flash
）