88
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
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 pin1 and
pin 2 at connector CN912?
Turn OFF the breaker of the indoor and the outdoor unit.
1. Turn OFF the breaker of the indoor and the outdoor unit, and
disconnect the connector CN781.
2. 3 minutes after turning ON the breaker, start
EMERGENCY OPERATION in HEAT mode.
Replace the 4-way valve.
Replace the noise filter P.C. board.
Replace the R.V. coil.
Is there voltage 12V DC
between the connector
CN781 pin 5 (+) and pin 3 (-) ?
Replace the electronic
control P.C. board.
Disconnect the connector
CN912. 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 pin1 and
pin 2 at connector CN912?
1. Turn OFF the breaker of the indoor and the outdoor
unit, and disconnect the connector CN781.
2. 3 minutes after turning ON the breaker, start
EMERGENCY OPERATION in COOL mode.
Replace the 4-way valve.
Replace the noise filter P.C. board.
Is there voltage 12V DC
between the connector CN781
pin 5 (+) and pin 3 (-) ?
Replace the outdoor control P.C. board.
If the connector CN912 is not connected or R.V. coil is open, voltage
occurs between terminals even when the control is OFF.
• When heating operation does not work.
• When cooling operation does not work.
MXZ-4D83VA/5D102VA
MXZ-4D83/5D102VAVA
CN721
Outdoor control P.C. board
OBH626B
Содержание MXZ-2D33VA-E1
Страница 16: ...16 OUTLINES AND DIMENSIONS 5 MXZ 2D33VA MXZ 2D40VA MXZ 2D53VA MXZ 2D53VAH Unit mm OBH626B ...
Страница 20: ...20 WIRING DIAGRAM 6 MXZ 2D33VA MXZ 2D40VA MXZ 2D53VA OUTDOOR DISPLAY P C BOARD OBH626B ...
Страница 21: ...21 MXZ 2D53VAH OUTDOOR DISPLAY P C BOARD OBH626B ...
Страница 22: ...22 MXZ 3D54VA OBH626B ...
Страница 23: ...23 MXZ 3D68VA OBH626B ...
Страница 24: ...24 MXZ 4D72VA OBH626B ...
Страница 25: ...25 MXZ 4D83VA OBH626B ...
Страница 26: ...26 MXZ 5D102VA OBH626B ...