Daikin RXYQ-TA Series Service Manual page 198

Troubleshooting by Error Code
∗1. Measurement of power wire connector.
Note:
∗2. Measurement of signal wire connector.
185
A
The
resistance
among U, V, and W
are unbalanced or
short circuited.
NO
Remove the signal
connector from the fan
motor and check the
resistance (∗2).
Between
Vcc and GND
terminals, and
between GND and Hw,
Hv, or Hu terminals
are short-
circuited.
NO
Turn ON the power.
The
HAP lamp
of the indoor unit
PCB (A1P) blinks and
the HAP lamp of the
fan PCB (A2P)
is OFF.
NO
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%).
Remove the X2A connector and measure the resistance between GND and V
terminals of the motor connector (with five conductors).
Connector power wire use (X1A)
5 Red
4 —
3 White
2 —
1 Black
YES
YES
YES
5 Gray
U
4 Pink
3 Orange
V
2 Blue
1 Yellow
W
Replace the indoor fan motor.
Replace the indoor fan motor.
Replace the fan PCB (A2P).
Replace the indoor fan motor.
Connector signal wire use (X2A)
GND
Vcc
Hw
H
V
H
U
SiUS341615E
, H , H , or H
CC W V U
Service Diagnosis