koppel KV24 ODU-ARF21C, Service Manual

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Troubleshooting
Electrical Control System 103
For other type:
Malfunction Error Code Timer Lamp
Operation Lamp
(flashes)
Indoor EEPROM malfunction E0 X 1
Communication malfunction between indoor and outdoor units E1 X 2
Open or short circuit of T1 temperature sensor E4 X 5
Open or short circuit of T2 temperature sensor E5 X 6
Refrigerant leakage detection EC X 7
Water level alarm EE X 8
Communication error between master and slave unit (for twins system) E8 X 9
Another indoor unit malfunction (for twins system) E9 X 10
Outdoor unit is faulty (for old communication protocol) Ed X 11
Overcurrent protection (For some units) F0 O 1
Open or short circuit of T4 temperature sensor F1 O 2
Open or short circuit of T3 temperature sensor F2 O 3
Open or short circuit of T5 temperature sensor F3 O 4
Outdoor EEPROM malfunction (For some units) F4 O 5
Communication error between auto-lifting panel and slim cassette (For
slim cassette with auto-lifting panel)
F7 O 8
Auto-lifting panel is faulty (For slim cassette with auto-lifting panel) F8 O 9
Auto-lifting panel is not closed (For slim cassette with auto-lifting
panel)
F9 O 10
IPM module malfunction P0
☆
1
Over voltage or over low voltage protection P1
☆
2
High temperature protection of top of compressor P2
☆
3
Too low ambient temperature protection P3
☆
4
Inverter compressor drive protection P4 ☆ 5
Low pressure protection of compressor P6
☆
7
Sensor of outdoor IGBT is faulty P7
☆
8
O (on) X(off)
☆
(flash)