Daikin RXYQ96PYDN Service Manual page 356

SiUS34-801A_b
Troubleshooting
Troubleshooting
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
YES
any foreign matters
around the fan?
NO
Is the
connector (X20A) for the
NO
fan motor properly connected to
the indoor unit PC
board? (*1)
YES
By
disconnecting the
connector (X20A) for the fan
NO
motor from the indoor unit PC board, 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 judgment
criteria?
YES
*1. If any junction connector is provided between the
connector (X20A) on the indoor unit PC board and
the fan motor, also check whether or not the junction
connector is properly connected.
*2. All resistance measuring points and judgment
criteria
FXAQ
1 White
20~63MAVE
2 Orange
3 Brown
4 Blue
5
6
7 Red
Troubleshooting by Indication on the Remote Controller
FXFQ
FG
25~125MVE
Vsp
Vcc
GND
Judgment Criteria
Measuring point
—
FG-GND
— Vsp-GND
Vcc-GND
Vdc
Vdc-GND
Remove the foreign matters.
Properly connect the connector.
Replace the fan motor.
Replace the fan motor.
Replace the indoor unit PC
board.
1 2 3 4 5
— — FG Vsp Vcc
Vdc GND —
1 2 3
Criteria
Not less than 1MΩ
Not less than 100kΩ
Not less than 100Ω
Not less than 100kΩ
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