Mitsubishi Electric MXZ-2D33VA Service Manual page 144

• In cooling, the heat exchanger of non-operating indoor unit has frosted.
• In 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.
MXZ-2D
CN724: LEV A, CN725: LEV B
Other models
CN791: LEV A, CN792: LEV B,
CN793: LEV C, CN794: LEV D,
CN795: LEV E, CN796: LEV F
Is the resistance of the LEV coil normal?
(Refer to 11-5.)
Yes
Replace LEV coil.
OBH626K
CN724
CN725
CN791
CN792
CN793
CN794
Yes
CN795
Normal
CN796
Replace the inverter P.C. board or
No
the outdoor control P.C. board.
144
MXZ-2D MXZ-3D/4D/5D/6D
Inverter P.C. board
Outdoor control
P.C. board
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