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• When cooling, heat exchanger of non-operating indoor unit frosts.
• When heating, non-operating indoor unit gets warm.
Check of LEV
Turn ON the power supply to the outdoor unit after checking LEV
coil is mounted to the LEV body securely.
Is "click - click" sound heard?
Or, do you feel vibration of LEV coil with your hand?
No
Disconnect the connectors.
CN724: LEV A, CN725: LEV B (MXZ-2HA)
CN791: LEV A, CN792: LEV B,
CN793: LEV C (MXZ-3HA),
CN797: LEV R (MXZ-3HA)
Is there normal resistance to LEV coil?
(Refer to 12-5.)
No
Replace LEV coil.
OBH828D
Normal
Yes
Replace the outdoor control P.C. board.
Yes
Connector
MXZ-2HA
CN724
Inverter P.C. board
CN725
CN791
CN792
CN793
CN794
CN795
CN796
63
MXZ-3HA
Outdoor control
P.C. board
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