I.
For Cooling (Refer to Figure 1, page 3).
A.
Turn the selector switch to the "LOW COOL" or "HIGH COOL" position.
B.
Rotate the thermostat (temperature control) to the position that is the most comfortable to you. The
thermostat will turn the compressor on when the temperature of the air entering the air conditioner rises
a few degrees above the setting you have selected. The temperature of the air entering continues to
cycle the compressor on and off in the above mentioned fashion until the selector switch is turned to
another mode of operation.
C.
Position the end louvers to the desired amount of discharge air flow.
Note: The fan operation is constant, only the compressor cycles on the thermostat.
II.
Operation During Cooler Nights (Cooling Operation).
It is important, when the outdoor temperature drops in the evening or during the night to below 75°F., that the
thermostat (temperature control) be set at a midpoint between "Warmer" and "Cooler". If the setting is at
"Cooler", the evaporator coil may become iced-up and greatly reduce the amount of air delivery. During the
day when the temperatures have risen above 75°F., reset the thermostat switch to the desired setting.
Note: Should icing occur, it is necessary to let the cooling (evaporator) coil defrost before normal cooling
operation is resumed. During this time, operate the unit in the "HIGH FAN" position with the system at
maximum air flow. When increased or full air flow is observed, the cooling coil should be clear of ice.
III.
Short Cycling
When an air conditioner is in operation, its compressor circulates refrigerant under high pressure. Once off, it
will take two to three minutes for this high pressure to equalize.
The air conditioning compressor is unable to start against high pressure. Therefore, once the air conditioner is
turned off, it is important to leave it off for two to three minutes before restarting.
Short cycling the compressor (or starting it before pressures have equalized), will in some instances, kick the
circuit breaker or overload.
IV.
Heat Operation
Turn the selector switch to the "LOW HEAT" position. At "LOW HEAT", the fan operates on low speed with
air temperature rise at maximum.
Rotate the thermostat (temperature control) switch to the position that is the most comfortable to you. The
thermostat will turn the heater on when the temperature of the air entering the air conditioning unit drops below
this setting a few degrees, and automatically turns off when the temperature of the air entering the air
conditioner rises a few degrees above this setting. The heater will continue to cycle on and off in this fashion
until the selector switch is turned to another mode of operation.
IV. OPERATION
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