Daikin VRV RXYMQ-A Series Service Manual page 226

Troubleshooting by Error Code
Troubleshooting RXYMQ4AVMK
RXYMQ4-6AYFK
Reference
CHECK 4 Refer to page 275.
220
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn off the power. Then,
turn on the power again.
Does the power
supply normally come
back on?
NO
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Turn off the power. Then,
turn on the power again.
Return to normal?
NO
CHECK 4
Is the power
transistor normal?
YES
CHECK 4
Is the power
transistor of the fan
driver normal?
YES
YES
YES
NO
Is the
insulation to
ground resistance of the
compressor 100 k: or
more?
YES
NO
It is supposed that the error results
from external causes other than
failures (e.g. exogenous noises or
thunder).
Replace the outdoor unit main
PCB (A1P).
The error could have resulted from
external factors other than failures
(e.g. external noise or thunder).
NO
Replace both the compressor (M1C)
and the inverter PCB (A3P).
Replace the inverter PCB (A3P).
Replace both the inverter PCB (A3P)
and the fan PCB (A4P).
Replace the inverter PCB (A3P).
Part 6 Service Diagnosis
SiME332106E