Alarm
Code
Activation of Fan Controller Protection
PCB1: Control PCB in Outdoor Unit
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.
★
IPM (Transistor Module) has detect
ed
function of abnormality.
This alarm is indicated when the abnormality is detected ten times within 30 minutes.
(Retry operation is performed up to the occurrence of nine times.)
Conditions of Activation:
Abnormal Current to the Transistor Module such as Short Circuited or Grounded
or Overcurrent
or Control Voltage Decrease
NOTE:
When the unit is applied the excessive surge current due to lighting or other causes, this alarm code “57” or the
inverter stoppage code (IT) “11” will be indicated and the unit can not be operated. In this case, check to ensure
the surge absorber/surge arrester (SA) on the noise filter (NF1, NF2). The surge absorber may be damaged if the
inner surface of the surge absorber is black. In that case, replace the surge absorber.
If the inside of the surge absorber is normal, turn OFF the power once and wait for PCB2’s LED201 (red) OFF
(approx. 5 min.) and turn ON again.
Yes
No
Is the heat exchanger of
outdoor unit clogged?
Replace the fan controller.
Remove the clogging or
replace the heat exchanger.
Check the fan motor.
Yes, it trips.
Turn OFF the power supply.
Disconnect the faston terminal (U, V, W)
and turn ON the DSW1-#1 of fan controller.
And then restart the operation.
Does it trip?
No
< Position of Surge Absorber >
(380-415V)
Surge Absorber (SA)
(Surge Arrester)
Lot
SP-226-1
250VAC/30A
OKAYA
LFB-14930-3MA
E
Surge Absorber (SA)
(Surge Arrester)
NF1
NF2
237
