Indoor Unit Malfunction - koppel KV24 ODU-ARF21C Service Manual

Troubleshooting

2.2 Indoor unit malfunction

For floor standing
:
Indoor EEPROM malfunction
Communication malfunction between indoor and outdoor units
Open or short circuit of T1 temperature sensor
Open or short circuit of T2 temperature sensor
Refrigerant leakage detection
Outdoor unit is faulty (for old communication protocol)
Overcurrent protection (For some units)
Open or short circuit of T4 temperature sensor
Open or short circuit of T3 temperature sensor
Open or short circuit of T5 temperature sensor
Outdoor EEPROM malfunction (For some units)
Open or short circuit of T2B temperature sensor
IPM module malfunction
Over voltage or over low voltage protection
High temperature protection of top of compressor
Too low ambient temperature protection
Inverter compressor drive protection
Sensor of outdoor IGBT is faulty
102
Malfunction Error Code
E0
E1
E4
E5
EC
Ed
F0
F1
F2
F3
F4
F6
P0
P1
P2
P3
P4
P7
Electrical Control System