Alarm
Code
Activation of Fan Controller Overcurrent Protection Device (2)
ϥ
“RUN” light is flashing and “ALARM” are indicated on the remote control switch.
ϥ
The unit No., alarm code and the unit code are alternately indicated on the set temperature section, and
the unit No. and alarm code are indicated on the outdoor unit PCB1.
★
This alarm is indicated when instantaneous overcurrent occurs at ten times within 30 minutes.
(Retry operation is performed up to the occurrence of nine times.)
Conditions of Activation: Fan controller current with
5% higher than the rated current
*1): Perform electrical discharge when checking or replacing fan controller by referring to the item 13.
4
.
PCB1: Control PCB in Outdoor Unit
PCB2: Inverter PCB
Is the supply voltage
220V+10% or 240V+10%?
Is the fan motor
running current as
same as rated
current?
Restart operation.
Does it trip soon?
Yes
Yes
Yes
Yes
It trips.
No
No
No
No
No
It trips
immediately.
Check the fan motor.
Check the fan motor.
Is there any cause
of instantaneous
voltage decrease?
It trips
occasionally.
It trips after a
certain period.
Turn off power and
disconnect U, V, W
from fan controller
terminals.
Turn ON #1 of DSW1
on PCB2 and restart.
Does it trip?
Replace
the fan controller.
Replace the
fan controller.
Yes
Yes
Yes
No
No
No
Check the capacity
and wiring of the
power source.
Replace
the fan controller.
Check
fan controller *1)
Normal
Replace
fan controller.
Faulty
Is it 187V or more during operation?
Is it 187V or more during operation
when other devices are operating?
Check the capacity
and wiring of the
power source.
240
