Vivax ACP-09CH25ZNM Service Manual page 16

FAULT DIAGNOSIS BY SYMPTOM
No heating
No heating
effect at all
Poor heating
efficiency
Fan motor
error
compressor
does not operate
Leakage of
refrigerant
Block of the cooling
system
The four-way valve
or solenoid valve faults.
Insufficient
refrigerant
Air filter is
blocked
Too low ambient
temperature
Too thick frost
generated on the
condenser.
Extra refrigerant or
mixing air in the system
Air conditioning burden
is not adequate for the
room
The condenser is too dirty
The electric heater is
not working
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.
The four-way valve did not commutate or the
distributing air of the four-way valve may
have mixed together.
Some leakage in the valve.
Some cracks, welding failure in the system.
Extra fluorin is added during mounting.
No periodical cleaning.
contaminated ambient environment.
Below 0 .
The condenser does not defrost, no smooth air
circulation.
Discharge the redundant refrigerator recharge
the refrigerant after vacuum extraction.
The doors and windows are not closed well;
too weak of input cooling/heating power.
Accumulated lampblack or dust is attached
to the vane.
Not satisfy the conditions for electric heater
running.
Plug cords may be loose.
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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