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 the following phenomenon occurs three times in 30 minutes.
(Retry operation is performed up to the occurrence of two times.)
Actual frequency from PCB2 is less than 10Hz (after inverter frequency output from PCB1).
Conditions of Activation: This alarm is indicated when PCB2 is not performed normally.
Alarm
Code
Inverter Failure
Ye s
Turn off power (LED201 OFF)
and restart operation.
Is alarm code “55” indicated
again?
No
PCB2 is normal.
Check the noise strainer. *1)
Replace the PCB2.
No
PCB1: Control PCB in Outdoor Unit
PCB2: Inverter PCB
*1): When the unit is applied the excessive surge current due to lighting or other causes, this alarm code “55” 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.
<PositionofSurgeAbsorber>
(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
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