36
Installation and Maintenance
Service Manual
7. Abnormal Sound and Vibration
Possible causes
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sound
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disappear after a few minutes.
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conditioner
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disappear after a few minutes.
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damping plaster between connected parts
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stick damping plaster between connected parts
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coil
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electromagnetic sound
Replace magnetic coil
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Outdoor unit gives out abnormal sound
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compressor
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please reduce refrigerant properly. Replace
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6. Air Conditioner is Leaking
Possible causes
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Drain pipe is blocked
Water leaking from indoor unit
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pipe
Drain pipe is broken
Water leaking from drain pipe
Replace drain pipe
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indoor unit
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5. Compressor Can't Operate
Possible causes
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connection
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diagram
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
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Capacity of compressor is
damaged
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fan capacitor.
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Power voltage is a little low or
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Coil of compressor is burnt out
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between compressor terminals and it's 0
Repair or replace compressor
Cylinder of compressor is blocked Compressor can't operate
Repair or replace compressor
4. ODU Fan Motor Can't Operate
Possible causes
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connection
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diagram
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damaged
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fan capacitor.
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Power voltage is a little low or
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Motor of outdoor unit is damaged
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is bad and ODU compressor generates a lot of
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