Daikin VRV RXYQ72-384XAYCA Service Manual page 242

Troubleshooting by Error Code
Troubleshooting
Note(s)
1: Check the following connectors.
Reference
CHECK 17 Refer to page 374.
235
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn OFF the power supply, and then
wait for a period of 10 minutes.
Are there any foreign
matter around the fan?
NO
Is the connector for
the fan motor properly
connected to the indoor unit
PCB? ( 1)
YES
By disconnecting
the connector for the fan
motor from the indoor unit control
PCB, the fan can be lightly
rotated by
YES
hand.
YES
CHECK 17
Disconnect the connector from the fan
motor, and then make measurement
of resistance between pins.
Is the resistance
between the pins more than the
judgment criteria?
YES
Model
FXFQ-T
FXZQ-TA
FXZQ-TB
FXUQ-P
FXUQ-PA
FXEQ-P
FXSQ05-48TA
FXSQ05-48TB
FXMQ07-12PB
FXMQ15-24TB
FXAQ-P
YES
NO
NO
NO
Connector
X20A, Relay connector
X20A, Relay connector
X20A, Relay connector
X20A, Relay connector
X20A, Relay connector
X20A
X8A
X8A
X8A
X8A
X20A
SiUS342004EB
Remove the foreign matter.
Properly connect the connector.
Replace the indoor fan motor
(M1F).
Replace the indoor fan motor
(M1F).
Replace the indoor unit control
PCB (A1P).
PCB
A1P
A1P
A1P
A1P
A1P
A1P
A2P
A2P
A2P
A2P
A1P
Part 6 Service Diagnosis