88
Check of inverter/ compressor
No
Yes
Yes
No
Yes
No
Start
Disconnect the lead wire from compressor, and turn on power supply.
Press the EMERGENCY OPERATION switch.
Is output balanced?
After three minutes, clarify the causes by counting time until the inverter stops.
0 to 10 seconds: compressor rare short
10 to 60 seconds: compressor lock
60 seconds to 5minutes: refrigerant circuit defective
5 minutes or more: normal
After three minutes, measure the voltage
between each terminal of lead wire of compressor.
U (BLK)
- V (WHT)
V (WHT)
- W (RED)
W (RED)
- U (BLK)
Output voltage
COOL: 100V(58Hz), HEAT: 100V (58Hz)
Is voltage output?
W
1
Turn OFF power supply and measure the
compressor winding resistance between
the compressor terminals.
Is the resistance 0.53
"
- 0.66
"
between the
each terminal?
Replace the outdoor electronic
control P.C. board
Connect the lead wire to compressor, and turn ON power supply.
Press the EMERGENCY OPERATION switch.
Replace the compressor.
W
1 • After the outdoor fan starts running, wait for 1 minutes or more before
measuring the voltage.
• The output voltage values have the tolerance of
i
20%.
Y
Check of LEV
No
Yes
No
Yes
Start
Turn ON power supply to the outdoor unit after checking
LEV coil is mounted to the LEV body securely.
Do you hear LEV "click, click......"?
Do you touch LEV and feel it vibrate?
Disconnect the connector CN771 on
outdoor electronic control P.C. board, and
measure the resistance of LEV coil.
Ok
Replace the outdoor electronic
control P. C. board.
Replace the LEV coil.
Is LEV coil resistance
as per characteristics?
X
When OPERATION INDICATOR lamp flashes 10-time.
When OPERATION INDICATOR lamp flashes 5-time.
OB245--3qxp 02.10.22 4:15 PM Page 88