Daikin VRV S RXQ4/5ARV1, Service Manual, Page: 362 / 377

Check SiAF332111E
356 Part 6 Service Diagnosis
6.16 Fan Motor Connector Check (Power Supply Cable)
CHECK 16
Check the fan motor connector according to the following procedure.
Outdoor unit RXMQ6-12AR
1. Turn OFF the power supply.
2. Measure the resistance between phases of U, V, W at the motor side connectors (3-core
wire) to check that the values are balanced and there is no short circuiting, while connector
or relay connector is disconnected.
Indoor unit
FXMQ50-140PB
Measurement of power wire connector.
Remove the X1A connector from the fan PCB (A2P) and measure the resistance between the
U and V, V and W, and W and U phases of the motor connector (with five conductors) and
check that each phase are balanced (within a permissible dispersion range of ±20%)
Red
White
Black
W
V
U
Red (5)
— (4)
White (3)
— (2)
Black (1)
U
V
W
Connector power wire use (X1A)