Haier AC36NACAAA [51/87] Diagnostic information trouble shooting

Haier AC282ACABA [51/87] Diagnostic information trouble shooting
Trouble Checkup result Possible reasons Corresponding solution
No output at 15 pin of 2803 Damaged 2803
Replace with a good 2803
No voltage at COM of relay JK3 on
oor board
ind
Damaged relay JK3 Replace with a good JK3e
Indoor blowing fan
cannot generate
medium wind
No output at relay JK2 on indoor
board
Damaged relay JK2 Replace with a good JK2
No output at 14 pin of 2803 Damaged 2803
Replace with a good 2803
Indoor blowing fan
cannot generate
high wind
No output at relay JK3 on indoor
board
Damaged relay JK3 Replace with a good JK3
No output at 11 pin of 2803 Damaged 2803 Replace with a good 2803
No output of swing
No output at relay JK6 of indoor
board
Damaged relay JK6 Replace with a good JK6
Unavailable power
breakdown memory
No setting has been made
Press sleep button 10 times within 5
seconds (and the buzzer will beep 4 times),
the system is then set to power breakdown
memory mode.
Unavailable power
breakdown memory
Damaged chip IC6 of indoor board
Return to the controller manufacturer for
repair
No output at 18 pin of 2803 Damaged 2803 Replace with a good 2803
No
boar
output of relay JK7 on indoor
d
Damaged relay JK7 Replace with a good JK7
No output of
four-way valve
during heating
program
Available output of relay JK7 on
indoor board
Socket CN6 is not plugged well with
connection cable
Plug CN6 and the connection cable well
No output at 12 pin of 2803 Damaged 2803 Replace with a good 2803
No output of relay JK5 on indoor
board
Damaged relay JK5 on indoor board Replace with a good JK5
No swing wind
under swing mode
Available output of relay JK5 on
indoor board
Socket CN4 is not plugged well with
connection cable
Plug CN4 well with the connection cable
DIAGNOSTIC INFORMATION (TROUBLE SHOOTING)

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