Fault Diagnosis By Symptom - Vivax ACP-09CH25ZNM Service Manual

FAULT DIAGNOSIS BY SYMPTOM

No cooling
No cooling
effect at all
Poor cooling
efficiency
Fan motor
error
compressor
does not operate
Leakage of
refrigerant
Block of the cooling
system
Insufficient
refrigerant
Air filter is
blocked
Poor efficiency of
heat dissipating on
the outdoor unit
Too high ambient
temperature
Air conditioning burden
is not adequate for the
room
Low airflow volume
The four-way
valve error
Blockage in
the system
Fan motor or its capacitor faults.
Loose connection or badly contact.
Control circuit error.
Voltage may appear a little lower or higher.
Loose or wrong connection.
Compressor faults or jumps for overloading.
Control circuit error.
Recharge the refrigerant at leaking place.
The capillary, pipeline are blocked or the valve
is not open or the connecting tube is folded flat.
Some leakage in the valve.
Some cracks, welding failure in the system.
Extra fluorin is added during mounting.
No periodical cleaning.
Accumulated lampblack, dust or contaminated
ambient environment.
Mounting location is not suitable, such as near the wall.
Air outlet is blocked or accumulated lampblack
or dust is attached to the vane.
The outdoor unit gets exposed to the sun for too
long period.
Not for residential use.
The doors and windows are not closed well;
too weak of input cooling power or too many
heat resources in the room.
Low fan motor frequency or capacitor is not
functional.
Low fan speed or the fan motor faults.
The distributing air of the four-way valve may have mixed
together; the valve core or solenoid valve faults.
The valve is not completely open; the capillary or
Pipeline is half blocked.
Connecting tube is folded flat.
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