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English
L-2230 Introduction
1.04 Normal Heating or Cooling
Cycle
Select Cool Mode and cooling only will be supplied. The
cabin temperature will be maintained within 2°F (1.1°C)
of the set point. Select Heat Mode and only heating will
be supplied. The cabin temperature will be maintained
within 2°F (1.1°C) of the set point.
Select Automatic and both heating and cooling will be
supplied as required. While in the Automatic Mode,
Elite will maintain a 2°F (1.1°C) temperature variation.
A 4°F (2.2°C) change in temperature is required to
cause the unit to shift to the opposite mode. Once in a
given mode, heating or cooling, Elite will maintain a
2°F (1.1°C) differential.
When the heating or cooling demand is satisfied, the
compressor cycles off and the fan returns to low speed
if the Automatic Fan Speed is set. The fan speed will
remain constant if Manual Fan Mode has been pro-
grammed.
IMPORTANT NOTE TO END USER:
If your air conditioning unit is Cool Only - if it does not
have a reversing valve - then Cool Mode MUST be
selected. DO NOT set to Automatic Mode for a Cool
Only unit. If Automatic Mode is selected and the thermo-
stat calls for heat, the compressor will run. Since there
is no reversing valve, the air conditioning unit will supply
cool air when heating is desired. Cool Only units do not
heat.
1.05 Reversing valve operation
The reversing valve is toggled to the opposite mode
when heating or cooling is required to reduce the
compressor starting surge. The valve will only toggle to
the opposite mode when a cooling or heating cycle is
called for and if the system has been off for less than
75 seconds. The valve will also toggle if a cycle is
interrupted from the display panel by pressing the power
button, or changing the set point. Unnecessary valve
toggling has been limited to reduce reversing valve
noise. Valve toggling can be totally eliminated by
programming the minimum compressor staging delay at
75 seconds or greater.
Power On Reset, which occurs when the system is
powered up, will always initiate a valve toggle.
