38
J Check of power supply
Is there voltage 230 VAC
between the indoor terminal
block S1 and S2?
No
Yes
Replace the indoor
electronic control P.C.
board.
Rectify indoor/outdoor
connecting wire.
Yes
If light up, OK.
If
fl
ash, refer to 11-3.
Does The left lamp of OPERATION
INDICATOR lamp on the indoor unit
light up?
Dose LED on the inverter P.C.
board light up or
fl
ash? (Refer
to 11-6.1.)
No
Replace the inverter
P.C. board.
Is there voltage 260 - 370 VDC
between DB61 (+) and DB61 (–)
on the inverter P.C. board?
(Refer to 11-6.1.)
No
Check the electric parts in main circuit.
Yes
Yes
No
Disconnect the connector between
compressor and intelligent power
module.
Turn ON power supply and press
EMERGENCY OPERATION switch.
Inverter P.C. board
(Solder side)
DB61
260 - 370 VDC
OBH629
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