86
Check of R.V. coil
No
Yes
No
Yes
Yes
No
1. Disconnect the lead wire leading to the compressor.
2. 3 minutes after turning ON the breaker, start EMERGENCY
OPERATION in HEAT mode.
Is there voltage of 230V AC between pin 1 and
pin 2 at connector CN721?
Turn OFF the breaker. Disconnect the connector CN721.
Replace the inverter P.C. board.
Replace the 4-way valve.
Replace the R.V. coil.
Is there normal resistance
to R.V. coil?
(Refer to 11-5.)
1. Disconnect the lead wire leading to the compressor.
2. 3 minutes after turning ON the breaker, start EMERGENCY
OPERATION in COOL mode.
Is there voltage of 230V AC between pin 1 and
pin 2 at connector CN721?
Replace the inverter P.C. board.
Replace the 4-way valve.
• The heating operation does not operate.
• The cooling operation does not operate.
The cooling operation or the heating operation does not operate.
MXZ-2D33VA/2D40VA/2D53VA/2D53VAH
MXZ-2D
CN721
Inverter P.C. board
OBH626B
Summary of Contents for MXZ-2D33VA-E1
Page 16: ...16 OUTLINES AND DIMENSIONS 5 MXZ 2D33VA MXZ 2D40VA MXZ 2D53VA MXZ 2D53VAH Unit mm OBH626B ...
Page 20: ...20 WIRING DIAGRAM 6 MXZ 2D33VA MXZ 2D40VA MXZ 2D53VA OUTDOOR DISPLAY P C BOARD OBH626B ...
Page 21: ...21 MXZ 2D53VAH OUTDOOR DISPLAY P C BOARD OBH626B ...
Page 22: ...22 MXZ 3D54VA OBH626B ...
Page 23: ...23 MXZ 3D68VA OBH626B ...
Page 24: ...24 MXZ 4D72VA OBH626B ...
Page 25: ...25 MXZ 4D83VA OBH626B ...
Page 26: ...26 MXZ 5D102VA OBH626B ...