Daikin VRV III-S RXYMQ36 48PVJU, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiUS34-907
118 Troubleshooting
*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 is 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 V
CC
, H
W
, H
V
, or H
U
terminals of
the motor connector (with five conductors).
A
Replace the fan motor.
The
resistors among
U, V, and W are unbalanced or
short-circuited.
NO
Remove the signal connector from the
fan motor and check the resistance (*2).
Turn on the power.
Replace the fan motor.
Between
V
CC
and GND terminals,
and between GND and H
W
,
H
V
, or H
U
terminals are
short-circuited.
YES
Replace the fan PCB (A2P).
The HAP
lamp of the indoor
unit PCB (A1P) blinks and the
HAP lamp of the fan
PCB (A2P) is off.
YES
NO
YES
Replace the fan motor.
NO
Connector power wire use (X1A) Connector signal wire use (X2A)
5 Red
4
2
3 White
1 Black
U
V
W
5 Gray
4 Pink
2 Blue
3 Orange
1 Yellow
GND
Vcc
H
V
Hw
H
U