35
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 upper 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 280 - 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 (CN61)
between compressor and intelligent
power module.
Turn ON power supply and press
EMERGENCY OPERATION switch.
Inverter P.C. board
(Solder side)
DB61
280 ~ 370 VDC
Summary of Contents for MUZ-HC25VA
Page 9: ...9 MUZ HC25VA MUZ HC35VA E1 MUZ HC35VAB E1 6 WIRING DIAGRAM...
Page 10: ...10 MUZ HC35VA E2 MUZ HC35VAB E2...
Page 43: ...43...
