Daikin REYQ-XA, Service Manual

Page: 405 / 441

SiUS371901E Check
Service Diagnosis 392
Outdoor unit REYQ-XATJU, REYQ-XAYDU
(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
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.
Measure the
resistance values
between Vcc and
U, V, W, and GND and
U, V, W.
GND
Vcc
W
V
U
Gray
Pink
Orange
Blue
Yellow
(5)
(4)
(3)
(2)
(1)