haier AS072XHERA - Manual (Page 32)

30
Failure code
Note:
1. Please contact the installers or distributors when trouble happens to repair it.
2. Turn the power off and power on again, if the failure code recurs, please change the indoor unit PCB.
3. Failrue codes maked with are resumable.
TROUBLE SHOOTING
FAILURE CODE
(TIMER LED OF INDOOR
RECEIVER BOARD FLASHES
TIMES)
POSSIBLE REASONS
Faulty temperature sensor Tai ONCE
Sensor disconnected, or broken, or at wrong
position, or short circuit
Faulty temperature sensor Tc1
Sensor disconnected, or broken, or at wrong
position, or short circuit
Faulty temperature sensor Tc2 3 TIMES
Sensor disconnected, or broken, or at wrong
position, or short circuit
Faulty temperature sensor Tm 4 TIMES
Sensor disconnected, or broken, or at wrong
position, or short circuit
Faulty EEPROM on indoor
unit PCB
5 TIMES Faulty indoor unit PCB
Abnormal communication
between indoor and outdoor unit
6 TIMES
Wrong connection, or the wires be disconnected,
or wrong address setting of indoor units, or faulty
PCB, or faulty power supply
Indoor unit address repeated 9 TIMES Wrong setting of indoor unit address
Central control address repeated 10 TIMES
Wrong setting of centralized control indoor unit
address
Faulty indoor unit fan motor 11 TIMES
Fan is blocked, or the terminal is disconnected
from the PCB, or faulty indoor unit PCB
Faulty driver of indoor unit
fan motor
12 TIMES Faulty indoor unit PCB
Malfunction on outdoor unit 20 TIMES Check the outdoor unit
TWICE