Fan Motor Connector Check (Power Supply Cable); Fan Motor Connector Check (Signal Cable) - Daikin Aurora Series Service Manual

Check

3.11 Fan Motor Connector Check (Power Supply Cable)

CHECK 16
(1) Turn OFF the power supply.

3.12 Fan Motor Connector Check (Signal Cable)

CHECK 17
RXLQ72-120TATJU, RXLQ72-120TAYDU only
(1) Turn OFF the power supply.
(2) Measure the resistance between Vcc and each phase of U, V, W, and GND and each phase at
299
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.
Red
White
Black
the motor side connectors (5-core wire) to check that the values are balanced within the range
of ± 20 %, while connector or relay connector is disconnected.
Furthermore, to use a multimeter for measurement, connect the probe of negative pole to Vcc
and that of positive pole to GND.
5 Gray
4 Pink
3 Orange
2 Blue
1 Yellow
U
Measure the
resistance values
V
between phases
U, V, W.
W
GND
Vcc
Measure the
resistance values
W
between Vcc and
U, V, W, and GND and
U, V, W.
V
U
SiUS341802E
Service Diagnosis