Daikin RTSQ20PY1 Service Manual page 236

Troubleshooting by Indication on the Remote Controller
Troubleshooting
225
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn OFF the power
supply, and then wait for a
period of 10 minutes.
Are there any
YES
foreign matters
around the fan?
NO
Is the connector (X20A)
NO
for the fan motor properly
connected to the indoor
unit PCB? (*1)
YES
By disconnecting the
connector (X20A) for the
NO
fan motor from the
indoor unit PCB, the fan
can be lightly rotated by
hand.
YES
Disconnect the connector
from the fan motor, and then
make measurement of
resistance between pins.(*2)
Is the resistance between
NO
the pins not less than the
judgement criteria?
YES
*1. If any junction connector is provided between the
connector (X20A) on the indoor unit PCB and the fan
motor, also check whether or not the junction
connector is properly connected.
*2. All resistance measuring points and judgement criteria
FXAQ 1 White
20~63PV1
2 Orange
3 Brown
4 Blue
5
6
7 Red
FG FXFQ
20~125P8VE
Vsp
Vcc
GND
Judgement Criteria
Measuring point
—
FG-GND
Vsp-GND
—
Vcc-GND
Vdc
Vdc-GND
SiBE31-801_C
Remove the foreign matters.
Properly connect the connector.
Replace the fan motor.
Replace the fan motor.
Replace the indoor unit PCB.
1 2 3 4 5
— — FG Vsp Vcc
Vdc GND —
1 2 3
Criteria
Not less than 1M Ω
Not less than 100k Ω
Not less than 100 Ω
Not less than 100k Ω
Troubleshooting