Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 124

Troubleshooting by Remote Controller
Troubleshooting
114
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Check in the monitor mode
Check fan motor (fan motor1, 2) corresponding to error
E7
code " " in the monitor mode of outdoor unit PCB.
Turn OFF the power supply and wait for 10 minutes.
Are any foreign
matters around the
fan?
Check the connection status of the connectors
Fan motor1: relay connector X1A, X2A or X1A, X2A of
compressor INV. PCB.
Fan motor1, 2: relay connector X3A, X4A or X1A, X2A of
compressor INV. PCB.
Is any connector
disconnected?
Check the color of relay connectors
Fan motor1: Both power supply wire and signal wire are all
white.
Fan motor2: Both power supply wire and signal wire are
red (on PCB side) or white (on motor side).
Relay
connectors have
any connection
error.
A
RQYQ8PY1B
RQYQ10PY1B
RQYQ12PY1B
YES
NO
YES
NO
YES
NO
RQYQ14PY1B
RQYQ16PY1B
SiBE341027
Remove the foreign matters.
Insert the connector.
Correct the connection of the relay
connectors.
Service Diagnosis