Indoor Fan Motor Abnormality - Daikin VRV RXYMQ-A Series Service Manual

Troubleshooting by Error Code
5.7

Indoor Fan Motor Abnormality

5.7.1 Indoor Fan Motor Abnormality (FXDQ-PD, FXDQ-ND)
Applicable
FXDQ-PD, FXDQ-ND
Models
A6
Error Code
Method of Error This error is detected if there is no revolution detection signal output from the fan motor.
Detection
Error Decision
When no revolutions can be detected even at the maximum output voltage to the fan
Conditions
Supposed  Defective indoor fan motor
 Broken wires
Causes
 Defective contact
Troubleshooting
Reference
CHECK 16 Refer to page 285.
166
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Are the
X4A and X27A
NO
connectors securely
connected?
YES
Is
the
power of 12
VDC supplied
between the Pins 1
YES
and 3 when the X27A is
disconnected and the
power supply turns
ON?
NO
SiME332106E
Properly connect the connectors.
(At this time, check for any
defective connector contact or
broken wires.)
CHECK 16
Check the indoor fan motor and
the wiring circuits of the fan
motor.
Replace the indoor unit control
PCB (A1P).
Part 6 Service Diagnosis