Daikin VRV III REYQ8PY1 Service Manual page 270

Si37-701
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Check in the monitor mode
12HP ~18HP class models have 2 fans.
Check electric motor (electric motor 1 or 2) corresponding
to malfunction code "E7" in the monitor mode of outdoor unit
PC board. (Refer to P226 - P227 for how to check)
Cut the power supply OFF and wait for 10 minutes.
Check if
any foreign substances
around the fan.
Check the connection status of the connectors
Fan motor 1: relay connector or X1A, X2A of compressor
inverter PC board.
Fan motor 2: relay connector or X1A, X2A of fan inverter
PC board.
Check
if any connector is
disconnected.
Check the color of relay connectors
Fan motor 1: Both power supply wire and signal wire are
all white.
Fan motor 2: Both power supply wire and signal wire are
red in the PC board side and white in the motor side.
Relay
connectors have
any connection
error.
5HP
8HP
Troubleshooting by Indication on the Remote Controller
YES
NO
YES
NO
YES
NO
A
12HP
18HP
Remove the foreign substances.
Insert the connector.
Correct the connection of the relay
connectors.
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