81
How to check inverter/compressor
No
No
Yes
Yes
No
Yes
No
Yes
Disconnect the connector (CNMC) between the inverter P.C. board/the
outdoor control P.C. board and compressor, or disconnet the terminal of the
compressor.
3 minutes after turning ON the breaker, start EMERGENCY OPERATION.
Is output balanced?
Replace the inverter P.C. board or
the outdoor power P.C. board.
(Except
MXZ-2D
)
Is the input voltage to the outdoor control
P.C. board 370V or more?
Replace the outdoor power P.C. board.
Replace the compressor.
Measure the voltage between each lead
wire leading to the compressor.
U (BLK) - V (WHT)
V (WHT) - W (RED)
W (RED) - U (BLK)
Is there voltage of 50V AC - 250V AC? * 1, * 2
Turn OFF the breaker, and measure the
compressor winding resistance between the
compressor terminals.
Is there resistance between each
terminal normal? (Refer to 11-5.)
Reconnect the lead wire of compressor.
3 minutes after turning ON the breaker,
start EMERGENCY OPERATION.
Clarify the causes by counting time until the
inverter stops.
0 to 10 seconds: compressor layer short
10 to 60 seconds: compressor lock
60 seconds to 5minutes: refrigerant circuit defective
5 minutes or more: normal
* 1 After the outdoor fan starts running, wait for
1 minute or more before measuring the
voltage.
The output voltage values have the
tolerance of ± 20%.
* 2 The output differs depending on the
capacity or the number of indoor units to be
operated.
• In heating, the room does not get warm.
• In cooling, the room does not get cool.
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 ...