Daikin RTSQ20PY1 Service Manual page 263

SiBE31-801_C
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
14HP ~16HP class models have 2 fans.
Check electric motor (electric motor 1 or 2) corresponding
E7
to malfunction code " " in the monitor mode of outdoor
unit PCB. (Refer to P.216~P.217 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 PCB.
Fan motor 2: relay connector or X1A, X2A of fan inverter
PCB.
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 PCB side and white in the motor side.
Relay
connectors have
any connection
error.
8HP
F1U R10
12HP
X4A
V1R
X2A
X1A
Z5C
5
X1A X2A
MS
3~
5
M1F
Troubleshooting by Indication on the Remote Controller
YES
NO
YES
NO
YES
NO
A
14HP
X51A
F1U R10
16HP
X4A
V1R
X2A
X1A
Z5C
5
X1A
X2A
MS
3~
5
M1F
Remove the foreign substances.
Insert the connector.
Correct the connection of the relay
connectors.
X5A X51A
F1U R10
X4A
X3A
V1R
X2A
X1A
Z9C
5
RED RED
X4A
X3A
WHT WHT
RED
MS
3~
5
M2F
252