SiAF332111E Troubleshooting by Error Code
Part 6 Service Diagnosis 325
RXMQ6/8AR
RXMQ10/12AR
Is
indoor-outdoor
unit transmission wiring
normal?
Is
indoor-outdoor
unit transmission wiring
normal?
Replace the indoor unit PCB.
Wiring check operation may
not have been carried out
successfully.
After fixing incorrect wiring,
press and hold the RETURN
(BS3) button on the outdoor
unit main PCB for 5 seconds.
The unit will not run for up to
12 minutes.
YES
NO
YES
NO
NO
YES
Is the check
operation
carried out?
Open the stop valve.
YES
NO
Are the stop
valves opened?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
Is
indoor-outdoor unit
transmission wiring
normal?
Is indoor -
outdoor unit
transmission wiring
normal?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Press RETURN (BS3)
button
on outdoor unit PCB for 5
seconds or longer.
∗ No operation for max. 12
minutes.
After fixing incorrect wiring,
press and hold the RETURN
(BS3)
button
on the master
outdoor unit PCB for 5
seconds.
∗ The unit will not run for up to
12 minutes.
YES
YES
NO
YES
NO
NO
NO
YES
Is the check
operation carried
out?
Open stop valve.
Replace the indoor unit PCB.
Normal
YES
NO
Are the stop valves
opened?
Are there any other
errors?
Perform test operation again and
press RETURN (BS3) button.
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