10
803161 Rev. 01
The procedure to set the limits is as follows:
Depress the On/Off key, the °F/°C key, and the
Warmer key simultaneously for 5 seconds to enter the
limit setup mode. The Warmer and Cooler keys will
scroll through the R-values indicated in the above
table. Once the desired R-value has been obtained on
the display, press the On/Off key to accept the change,
and then press it again to effect the change and restore
the normal display.
ELECTROMECHANICAL DIAL CONTROLS
Room temperature is controlled on both heating and
cooling by the temperature control knob. Clockwise
rotation decreases the temperature in the room.
Counter-clockwise rotation decreases the temperature
in the room.
Rotate the “Temperature” dial a small amount at a time
in the direction that you wish the temperature to go.
Moving the dial more than ½” at a time may over-
compensate, leading to an extreme hot or cold
situation. Once a comfortable setting is determined and
set, no other adjustments are necessary.
Over-adjusting the thermostat will not increase the rate
at which the unit will heat or cool the space; it is
merely an on-off switch that responds to temperature.
Fan speeds in heating and cooling operation are
controlled by a “Fan Speed” knob. Rotate the knob to
the right of “0” for cooling operation, and to the left of
“0” for heating operation. Rotation of the knob changes
fan speed as follows:
3 = High Speed 2 = Low Speed 1 = Low Speed
ATTENTION:
When operating in cooling mode, if
the compressor is shut off by rotation of either dial,
then wait for 3 minutes before re-starting the
compressor.
Figure 3
Fan Cycling Switch:
The chassis includes a continuous/intermittent fan
feature. Located on the left bottom corner of the
control box is a rocker switch used to switch between
continuous and intermittent fan operation.
With the rocker switch in the
“Continuous”
position,
as indicated by the label on the front of the unit, the
indoor fan will continue to operate as long as the unit is
switched on in either the heating or cooling mode. The
fan will operate continuously at the fan speed selected.
With the rocker switch in the
“Intermittent”
position,
and the unit in cooling mode, the indoor fan will
operate only when there is a call for cooling by the
adjustable thermostat. Similarly with the unit in
heating mode, the indoor fan will operate only when
there is a call for heating in order to satisfy the heat
setting on the adjustable thermostat.
It is recommended that continuous fan operation be
selected in the cooling mode to avoid excessive
temperature “swings” in the conditioned space.
The most effective indoor temperature sensing and
highest comfort levels are achieved when room air is
being drawn continuously across the sensing bulb of
the unit thermostat. If complaints of large temperature
swings in the room are experienced, then switch the
unit to continuous fan operation.
The front cover must be removed to access the switch.
