Mitsubishi Electric MXZ-2D33VA-E1 Service Manual page 83

• 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 breaker 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.
OBH626B
Yes
Normal
Replace the inverter P.C. board or
No
the outdoor control P.C. board.
83
MXZ-3D/4D/5D
MXZ-2D
CN724
Inverter
Outdoor
CN725
P.C. board
control
CN793
P.C. board
CN794
CN795
CN796