NO
•
Set temperature is suitable.
Set temperature to higher
value using thermostat on the
control panel.
Air filter is clogged.
Temperature
difference
is small.
YES
Temperature difference between
suction and discharge air is
large enough (approx. 10 deg. or more).
Possibility of
gas shortage.
•
Measure temperature of suction and
discharge air of air conditioner.
Charge refrigerant
gas (R22).
Check for clogging of air filter.
•
Fan speed is set to LOW.
Clean filter.
Set fan speed to
HIGH.
•
Review cooling load estimate,
if performance of air conditioner is
normal.
Reduce cooling load or
replace the air conditioner
with larger capacity.
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