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Check of LEV
No
Yes
No
Yes
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 ?
Disconnect the connectors.
MXZ-2B
CN791: LEV A, CN792: LEV B, CN795: LEV E
MXZ-3B/4B/5B
CN791: LEV A, CN792: LEV B, CN793: LEV C,
CN794: LEV D
(MXZ-4B/5B)
, CN795: LEV E
(MXZ-5B)
, CN796: LEV F
(MXZ-3B/4B)
,
CN797: LEV M
(MXZ-5B)
Is there normal resistance to LEV coil ?
(Refer to 11-5.)
Normal
Replace the electronic control P.C. board/outdoor
control P.C. board..
Replace LEV coil.
• When cooling, heat exchanger of non-operating indoor unit frosts.
• When heating, non-operating indoor unit gets warm.
CN791
CN792
CN793
CN794
CN795
CN796
CN797
Electronic
control
P.C. board
MXZ-2B/
3B/4B
MXZ-5B
Outdoor
control
P.C. board
OBH560G