Daikin RXQ12AHR Service Manual page 232

Troubleshooting by Error Code
Troubleshooting
226
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check in Monitor Mode
For the models equipped with 2 fan motors, check the fan
motor M1F or M2F applicable to the error code E7 while in
monitor mode of the outdoor unit.
Turn OFF the power supply, and then wait for a period of 10
There is
foreign matter around the
applicable fan.
NO
Check for Connection of Connector
Check for the connections of all fan motor connectors.
Some connectors are
disconnected.
NO
Check for Colors of Relay Connectors
Check for any wire connection errors in 2 units of fan motors.
• Fan motor 1: Power supply cables and signal cables are all white.
• Fan motor 2: Power supply cables and signal cables are red
on the PCB side and white on the motor side.
There is a relay
connection error.
NO
There is
no continuity
across the fuse
(F101U) on the fan
PCB.
(#1)
NO
The fan
cannot be
rotated by hand when
disconnecting the
connector from the
fan motor.
NO
Resistance
between the fan
motor power supply
cable terminal and the motor
frame (metallic part) is
not more than 1
MΩ.
NO
A Go to the next page
YES
YES
YES
YES
YES
YES
SiAF341904E
Remove the foreign matter.
Insert the connector.
Correct the connection of the
connector.
Replace the fan PCB. (#1)
#1
RXQ6-12A: A4P
RXQ14-20A: A4P, A7P
Replace the relevant fan motor.(#2)
#2
RXQ6-12A: M1F
RXQ14-20A: M1F, M2F
Replace the relevant fan motor. (#2)
Part 6 Service Diagnosis