Daikin VRV EMERION REYQ-AATJA Service Manual page 403

SiUS372201EB
Troubleshooting
Reference
CHECK 4 Refer to page 454.
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn OFF the power supply
once, and then turn it ON
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
NO
Is the
insulation to
ground resistance of the
relevant compressor 100
k: or more?
YES
NO
Troubleshooting by Error Code
The error could have resulted from
external factors other than failures
(e.g. external noise or thunder).
NO
Replace the compressor and the
inverter PCB together.
Replace the inverter PCB.
Replace the inverter PCB and the fan
PCB.
Replace the inverter PCB.
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