Hisense AHM-080HCDSAA - Page 409

388
Troubleshooting
Turn ON outdoor
unit
Is LED2 of O.U. main PCB
ON?
Yes
No
Fuse F201 is blowout?
Yes
Failure of Power
Circuit of
PCB.
O.U. main
No
Power supply of O.U. main
PCB?
No
Connect Terminal
“L” and “ N”
Yes
DC310/340V (For power
supply circuit: 220~240V)
is applied to T16 and T21
Yes
Voltage is normal.
LED2 of O.U. main
PCB is faulty.
No
Failure of power
circuit of O.U. main
PCB.
DC310/340V (For power
supply circuit: 220~240V)
is applied to T16 and T21
No
Yes
DC280V system is
normal
Is LED1 of O.U. display
PCB ON ?
No
5V is applied to 5V and
GND.
Yes
Voltage is normal. LED1
of O.U. main PCB is
faulty
Yes
5V is applied to 5V and
GND.
Failure of Power
Circuit of O.U. main
PCB.
No
No
Yes
5V system is
normal
12V is applied between
12V-C and GND
No
Failure of Power
Circuit of O.U. main
PCB of Main
Control Part
Yes
12V system is
normal
P5V is applied between
P5V and PGND
No
Failure of Power
Circuit of O.U.
main PCB of inverter
Part
Yes
P5V system is
normal
P15V is applied between
P15V and PGND
Yes
No
Failure of Power
Circuit of O.U.
main PCB of inverter
Part
Check is completed.
Power circuit is normal.