SiUS281811EA Check
Part 6 Service Diagnosis 307
FBQ-P
Outdoor Unit
(1) Turn OFF the power supply.
(2) Remove the connector (X106A, X107A) on the PCB to measure the resistance value.
Judgment criteria: resistance value between each phase is within ±20%
(1) 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%).
(2)
Measurement of signal wire connector.
Remove the X2A connector and measure the resistance between GND and Vcc,
Hw, Hv, or Hu terminals of the motor connector (with five conductors).
5 Gray
4 Pink
3 Orange
2 Blue
1 Yellow
GND
Vcc
Hw
H
V
HU
5 Red
4
—
3 White
2
—
1 Black
U
V
W
Connector power wire use (X1A) Connector signal wire use (X2A)
1 White
2 Orange
3 Brown
4 Blue
5
—
6
—
7 Red
FG
Vsp
Vcc
GND
—
—
Vdc
Connector for signal wires
(X106A, X107A)
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