85
MXZ-3D54VA/3D68VA/4D72VA
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Disconnect CN931 and measure the
resistance of the outdoor fan motor.
Is the resistance of outdoor fan motor
normal? (Refer to right table)
Turn on the power supply to start operation
and measure the voltage of connector CN931.
Turn OFF the power supply and connect
the connector CN931.
Turn ON the power supply and measure
the voltage of connector CN931 while
rotating the motor by the hand.
Does the outdoor fan motor rotate smoothly?
Replace the outdoor fan motor.
Resistance
60 kΩ
160 kΩ
Measuring points
* To measure the resistance, connect
the negative (-) end of the tester to pin 4.
* To measure the voltage, connect the negative (-)
end of the tester to pin 4.
* Voltage between pin 4 and 6 should be measured
within 1 minute after the operation starts.
pin 1 - pin 4
pin 5 - pin 4
pin 6 - pin 4
pin 7 - pin 4
Voltage
15V DC
325 V DC
1 - 5V DC
CN931
pin 1 - pin 4
pin 5 - pin 4
pin 6 - pin 4
Is the voltage of connector CN931
normal? (Refer to right table.)
Replace the outdoor control P.C. board.
Does the voltage between pin 7 and pin 4
of connector CN931 repeat 0V and 5V?
Replace the outdoor fan motor.
Does the fan motor operate for about
5 seconds?
Replace the outdoor fan motor.
Replace the outdoor fan motor.
Replace the outdoor control P.C. board.
Start operation.
CN931 Outdoor control P.C. board
MXZ-3D54VA/3D68VA/4D72VA
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 ...