Mitsubishi Electric MXZ-A18WV Service Manual page 61

• When cooling, heat exchanger of non-operating indoor unit frosts.
• When heating, non-operating indoor unit get warm.
D D Check of LEV
LED display:
Start
Turn on 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 the LEV coil with a hand?
No
Disconnect the connector
CN771: LEV A, CN772: LEV B (MXZ-A18WV)/
CN791: LEV A, CN792: LEV B, CN793: LEV C,
CN794: LEVD, CN795: LEV E (MXZ-A26/A32WV).
Is there normal resistance to LEV coil?
No
Replace the LEV coil.
LED1 LED2
Lighting Lighting
6 time Goes out
Yes
Normal
Yes
Replace the outdoor electronic
control P. C. board.
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