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9-3-1. Only indoor fan does not run.
9-3-2. Only flap motor does not run.
9-3-3. Only outdoor fan does not run.
9-3. Some part of air conditioner does not operate.
No
Yes
If you turn fan gently once or twice
by hand, can the fan turn ?
Check fan casing
foreign matter on
inside.
Fan motor winding
burnout or foreign
matter in bearings.
Remove foreign
matter or repair.
Repair or replace.
•
Check fan motor capacitor.
Check fan motor capacitor.
No
When fan speed is changed, does
applied voltage between lead wires
BRN and WHT change as well ?
P.C.Board is defective.
Check connectors to P.C.Board.
Measure resistance of flap motor
winding and check the connector.
No
If you turn fan gently once or twice
by hand, can the fan turn ?
Check fan casing
foreign matter on
inside.
Fan motor winding
burnout or foreign
matter in bearings.
Remove foreign
matter or repair.
Repair or replace.
Yes
Check fan motor capacitor.
Check connectors to indoor unit
P.C.Board.
Check connectors to outdoor fan
motor lead wires.
1.Measure resistance of indoor fan
motor winding.
2.Is the resistance OK ?
1.Measure resistance of outdoor fan
motor winding.
2.Is the resistance OK ?
48