Abnormal Outdoor Fan Motor Signal; H7" Abnormal Outdoor Fan Motor Signal - Daikin VRV II REYQ8MY1B Service Manual

Troubleshooting by Indication on the Remote Controller
2.22 " H7 "

Abnormal Outdoor Fan Motor Signal

H7
Remote
Controller
Display
Applicable REYQ8~48M
Models
Method of Detection of abnormal signal from fan motor.
Malfunction
Detection
Malfunction In case of detection of abnormal signal at starting fan motor.
Decision
Conditions
Supposed
Causes
Troubleshooting
174
Abnormal fan motor signal (circuit malfunction)
Broken, short or disconnection connector of fan motor connection cable
Fan Inverter PC board malfunction
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Turn power off.
Is the fan
motor connector
X2A connected to PC board
for Fan inverter
correctly?
YES
Check of fan motor connector.
0
( 1)
The
resistance of
fan motor read wire
connector pins between
Vcc-UVW and
GND-UVW
balanced?
YES
1: Disconnect connector (X2A) and measure the following resistance.
5 Gray
4 Pink
3 Orange
2 Blue
1 Yellow
NO
NO
X2A
GND
Vcc
Measure the
resistance
between Vcc-
UVW and
W
GND-UVW.
V
U
Si39-306
Connect correctly.
Replace fan motor.
Replace fan inverter PC Board.
(A3P)
(V3069)
(V2799)
Troubleshooting