Service manual

59
P Check of bus-bar voltage
MUZ-A24NA MUY-A24NA MUZ-GA24NA MUY-GA24NA
•Check the voltage of power supply.
•Confi rm outdoor unit failure mode
recall function. (Refer to 10-2.2)
Blink 5 times
Confi rm LED1 indication lamp on
the outdoor electronic control P.C.
board.
Replace the power board.
Blink 9 times
Replace the outdoor elec-
tronic control P.C. board.
Turn OFF power supply before removing P.C. board.
Confi rm LED1 indication lamp
on the outdoor electronic con-
trol P.C. board.
Turn ON power supply.
Start operation.
Blink 6 times
Replace the outdoor elec-
tronic control P.C. board.
Lighting
Replace the outdoor elec-
tronic control P.C. board.
Blink 9 times
Replace the power board.
Confi rm LED1 indication lamp
on the outdoor electronic con-
trol P.C. board.
Turn ON power supply.
Start operation.
Normal.
Lighting Lighting