Si18-201 Troubleshooting - SkyAir Indoor Unit
Service Diagnosis 255
2.6.3 Indoor Unit Fan Motor Lock
Remote
Controller
Display
A6
Applicable
Models
FHYC
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 PC board
Troubleshooting
YES
With
X26A unplugged
and the power supply
turned on, is there about 12
VDC between pins 1
and 3 of
X26A?
NO
Connect correctly.
Indoor unit PC board
replacement
Check indoor unit fan motor and
motor wiring.
(MF013)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are X20A and X26A
properly connected?
NO
YES
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