Carrier 38QUS014D8S2-1 - Troubleshooting

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18. Troubleshooting
18.1 Indoor unit error code explanation:
For
Four
-
way cassette type (compact)
,
A6 Duct(7K/9K)
:
Malfunction
Error Code
Timer Lamp
Operation Lamp
(flashes)
Indoor EEPROM malfunction E0 X 1
Communication malfunction between indoor and outdoor units E1 X 2
Indoor fan speed has been out of control E3 X 4
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
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
Outdoor fan speed is out of control F5 O 6
Open or short circuit of T2B temperature sensor F6 O 7
Communication malfunction between indoor two chips(For A6 Duct) FA O 11
IPM module malfunction P0 ☆ 1
Over voltage or over low voltage protection P1
☆
2
Too low ambient temperature protection P3 ☆ 4
Inverter compressor drive protection P4
☆
5
Indoor units mode conflict -- ☆ 6
Low pressure protection of compressor P6
☆
7
O (on) X(off) ☆(flash at 2Hz)