Indoor Unit Pcb; Error Codes - Haier FlexFit Pro Series Service Manual

4. Error Code
4.1 Failure code indoor unit
AL24LP2VHA AL36LP2VHA
LED flash times of
LR.Recever
indoor PCB
digital display
LED4 LED1
0 1
0 2
0 4
0 7
0 8
0 12
0 13
0 14
Note:
1. The outdoor failure can also be indicated by the indoor unit, the checking method as follows: If the outdoorerror
code is M (DECIMAL) , the indoor unit's I.R. receiver display will show the after converted hexadecimal code of
"M+20" (DECIMAL) , for example, if the outdoor error code is 2, the indoor unit I.R. receiver display will flash the
error code 16 (2→2+20=22→change deciaml 22 to hexadecimal code, get 16)
2. LED4 is a red one on the indoor PCB, LED1 is a yellow one.
3. To get much more details about the out door unit failure, please refer to the outdoor unit trouble shooting list.
AL48LP2VHA
Contents of malfunction
Malfunction of indoor unit ambient
01
temperature sensor
Malfunction of indoor unit piping
02
temperature sensor
04 PCB EEPROM error
Abnormal communication between
07
indoor and outdoor units
Abnormal communication between
08 wired controller (or IR reciever) and
indoor unit
0C Malfunction of drain system
0D Zero cross sigal wrong
0E Indoor unit DC fan motor abnormal
Sensor disconnected, broken, shorted,
or at wrong position.
Sensor disconnected, broken, shorted,
or at wrong position.
EEPROM chip disconnected, broken,
or programmed incorrectly.
PCB defective.
Poor wiring connections, faulty wiring,
poor power supply, incorrect addressing
of indoor units, malfunction of slave unit
programming in MAXI system; faulty
PCB.
Wrong connection or wired controller
broken, or PCB faulty
Condensate pump disconnected
or faulty, float switch a wrong
position, disconnected or faulty, or a
disconnection of the short circuit bridge
Zero cross signal not detected
Fan motor disconnected, faulty wiring,
motor failure, or faulty circuit to motor
70
FlexFit Pro
Possible reasons