Fan Motor Connector Check (Signal Cable) - Daikin VRV Aurora RXLQ-TATJU Series Service Manual

SiUS341802EC

4.12 Fan Motor Connector Check (Signal Cable)

CHECK 17
Resistance measuring points and judgment criteria.
Outdoor Unit
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
Indoor Unit
FXFQ-T, FXFQ09-30P, FXZQ-TA, FXZQ-TB, FXUQ-P, FXSQ05-48TA, FXSQ05-48TB,
FXMQ07-12PB, FXMQ15-24TB, FXAQ-P
Measuring points
FXFQ36/48P
Measuring points
Part 6 Service Diagnosis
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.
Gray (5)
Pink (4)
Orange (3)
Blue (2)
Yellow (1)
Judgment criteria
1 - 4 1  or more
2 - 4 1  or more
3 - 4 1  or more
7 - 4 1  or more
Judgment criteria
3 - 2 1 or more
4 - 2 1 or more
5 - 2 1 or more
1 - 2 1 or more
GND
Vcc
Measure the
resistance values
W
between Vcc and
U, V, W, and GND and
U, V, W.
V
U
White (1)
FG
Orange (2)
Vsp
Brown (3)
Vcc
Blue (4)
GND
— (5)
—
— (6)
—
Red (7)
Vdc
1 2 3 4 5
— — FG Vsp Vcc
Vdc GND —
1 2 3
Check
388