01-76
CAUTION
Test 3 : Replace Main PCB
Test 2 : Check the LED of the Main PCB
Test 1 : Check the SERVICE LAVEL of the outdoor unit
NO
YES
F
E
D
C
MONITOR
ERROR
B
A
POWER
MODE
(7 sec.)
(7 sec.)
(7 sec.)
(7 sec.)
(2-blink)
NO
Test 2 : It is automatic correction by CHECK RUN operation.
Test 3 : Re-display CHECK RUN result
YES
NO
Test 4 : Replace Main PCB
Replace Main PCB.
YES
SERVICE PARTS INFORMATION 10
CAUTION of if the replace
Main PCB(Outdoor unit)
After the replaced Main PCB, normal operation is not possibility.
If you are replace the Main PCB of the outdoor unit, please do the following things!
Repair history have been described on the service label?
(refer to Fig.1)
Is LED lights on the Main PCB?
IIs the wiring there is a mistake?
(refer to Fig.2)
Example ) when the 4 indoor units are connected
Fig.1 :
SERVICE LAVEL
Repair history (Ex.)
Reverse connection of Terminal B and Terminal C.
Fig.2 : Display of CHECK RUN operation
Check results (Ex.)
Reverse connection of Terminal B and Terminal C.
After the Main PCB replaced,
Please make sure the cool air comes out
by TEST RUN(cooling) operation.
After the Main PCB replaced,
CHECK RUN operation again,
please do the automatic correction.
or
After the Main PCB replaced,
Please Correct the wiring
by Repair history.
Replace Main PCB.
After the Main PCB replaced,
CHECK RUN operation again,
please do the automatic correction.
or
Replace Main PCB.
