Maxon MXI 09HC001, Руководство по обслуживанию

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No heating
effect at all
Fan motor
error
Fan motor or its capacitor faults.
Loose connection or badly contact.
compressor
does not operate
Control circuit error.
Voltage may appear a little lower or higher.
Loose or wrong connection.
Compressor faults or jumps for overloading.
Control circuit error.
Leakage of
refrigerant
Recharge the refrigerant at leaking place.
Block of the cooling
system
Poor heating
efficiency
Insufficient
refrigerant
Some cracks, welding failure in the system.
Air filter is
blocked
No periodical cleaning.
contaminated ambient environment.
Too low ambient
temperature
Below 0 .
Too thick frost
generated on the
condenser.
The condenser does not defrost, no smooth air
circulation.
Extra refrigerant or
mixing air in the system
Discharge the redundant refrigerator recharge
the refrigerant after vacuum extraction.
The condenser is too dirty
Air conditioning burden
is not adequate for the
room
Accumulated lampblack or dust is attached
to the vane.
The capillary, pipeline are blocked or the valve
is not open or the connecting tube is folded flat.
The doors and windows are not closed well;
too weak of input cooling/heating power.
Some leakage in the valve.
No heating
The four-way valve
or solenoid valve faults.
The four-way valve did not commutate or the
distributing air of the four-way valve may
have mixed together.
The electric heater is
not working
Not satisfy the conditions for electric heater
running.
Plug cords may be loose.
The four-way
valve error
Blockage in
the system
The valve is not completely open; the capillary or
Pipeline is half blocked.
Connecting tube is folded flat.
The distributing air of the four-way valve may have mixed
together; the valve core or solenoid valve faults.
Low airflow volume
Low fan motor frequency or capacitor is not
functional.
Low fan speed or the fan motor faults.
Extra fluorin is added during mounting.
FAULT DIAGNOSIS BY SYMPTOM
14