SiAU18-715 Troubleshooting for SkyAir Indoor Unit
Troubleshooting 335
5.4 Indoor Unit Fan Motor Lock
Remote
Controller
Display
A6
Applicable
Models
FHQ
Method of
Malfunction
Detection
Detection by failure of signal for detecting number of turns to come from the fan motor
Malfunction
Decision
Conditions
When number of turns can’t be detected even when output voltage to the fan is maximum
Supposed
Causes
Failure of indoor unit fan motor
Broken or disconnected wire
Failure of contact
Failure of indoor unit PCB
Troubleshooting
Are X20A
and X26A properly
connected?
With
X26A unplugged
and the power supply
turned on, is there about 12
VDC between pins 1
and 3 of
X26A?
YES
YES
Connect correctly.
Indoor unit PCB
replacement
Check indoor unit fan
motor and motor wiring.
NO
(Q0534)
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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