Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 439

• When cooling, heat exchanger of non-operating indoor unit frosts.
• When heating, non-operating indoor unit get warm.
D Check of LEV
LED display:
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 LEV coil with a hand?
No
Disconnect the connector
CN791: LEV A, CN792: LEV B, CN793: LEV C,
CN794: LEV D, CN795: LEV E.
Is there normal resistance to LEV coil?
No
Replace LEV coil.
LED1 LED2
Lighting Lighting
Lighting Once
Yes
Normal
Yes
Replace the inverter P.C. board or
the outdoor electronic control P.C. board.
Resolución de averías
439