Toshiba MXZ-2DM40VA Service Manual page 39

• 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-2DM40VA
CN724: LEV A, CN725: LEV B
MXZ-3DM50VA
CN791: LEV A, CN792: LEV B,
CN793: LEV C, CN795: LEV E
Is the resistance of the LEV coil normal?
(Refer to 11-5.)
Yes
Replace LEV coil.
OBH739A
CN724
CN725
CN791
CN792
CN793
CN795
Yes
Normal
Replace the inverter P.C. board or
No
the outdoor control P.C. board.
39
MXZ-2DM40VA MXZ-3DM50VA
Inverter P.C. board
Outdoor control
―
P.C. board
―