Swing Motor Lock (Fhq Series) - Daikin Super Multi NX FFQ25B8V1B Service Manual

Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
6.4

Swing Motor Lock (FHQ Series)

A7
Remote
Controller
Display
Method of The error is detected by the limit switch when the motor turns.
Malfunction
Detection
Malfunction When the ON/OFF micro-switch for position detection cannot be reversed even though the
swing motor is energized for a specified amount of time (about 30 seconds).
Decision
Conditions
Supposed
Causes
Troubleshooting
324
Defective swing motor
Defective micro-switch
Disconnection of connector
Defective indoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Are the connectors
correctly connected to
X29A and X14A on the
PCB?
YES
Is the relay
connector of the limit
switch correctly
connected?
YES
Turn the power supply off once
and back on. Check whether the
swing motor swings when the
power supply is turned back on.
Does the swing motor
swing?
NO
Turn the power supply off once
and back on. Measure the output
voltage of connector X29A when
the power supply is turned back
on.
220-240 VAC?
YES
NO
NO
Disconnect X14A, turn the power
YES supply off once and back on.
Check if the limit switch has
continuity when the power supply
is turned back on.
Does continuity/no
continuity reverse?
NO
NO
SiBE121021_C
Connect them correctly.
Connect it correctly.
YES
Replace the indoor unit
PCB.
Replace the indoor unit
PCB.
Replace the swing
motor.
(R12863)
Service Diagnosis