Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
SiBE121021_C
324
Service Diagnosis
6.4
Swing Motor Lock (FHQ Series)
Remote
Controller
Display
A7
Method of
Malfunction
Detection
The error is detected by the limit switch when the motor turns.
Malfunction
Decision
Conditions
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).
Supposed
Causes
Defective swing motor
Defective micro-switch
Disconnection of connector
Defective indoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Connect them correctly.
Replace the indoor unit
PCB.
Replace the swing
motor.
(R12863)
NO
Replace the indoor unit
PCB.
YES
YES
NO
Connect it correctly.
NO
YES
YES
YES
Turn the power supply off once
and back on. Check whether the
swing motor swings when the
power supply is turned back on.
Turn the power supply off once
and back on. Measure the output
voltage of connector X29A when
the power supply is turned back
on.
Disconnect X14A, turn the power
supply off once and back on.
Check if the limit switch has
continuity when the power supply
is turned back on.
NO
NO
Are the connectors
correctly connected to
X29A and X14A on the
PCB?
Is the relay
connector of the limit
switch correctly
connected?
Does the swing motor
swing?
220-240 VAC?
Does continuity/no
continuity reverse?
