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SYSTEM CHECK
If at any time during testing your system does not operate properly, contact a qualified HVAC
contractor.
Ensure that there is power to the system.
Fan Operation
(If your system does not have a “G” (Fan) terminal connection, skip to the “Heating System”
section.)
1. Move the
SYSTEM
switch to the
OFF
position.
2. Move the
FAN
switch to the
ON
position. The blower should begin to operate.
3. Move the
FAN
switch to the
AUTO
position. The blower should stop immediately.
Heating System
1. Move the
SYSTEM
switch to the
HEAT
position. If the auxiliary heating system has a
standing pilot, be sure to light it.
2. Adjust the setpoint to a temperature above the current room temperature.
If the (FA)st heating cycle rate is selected in the configuration menu (see
“Configuration
Menu Chart
”), the thermostat will call for heat when the room temperature is 0.75ºF (0.5ºC)
below setpoint and turn off at setpoint.
If the (SL)ow heating cycle rate is selected, the thermostat will call for heat when the room
temperature is 1.5ºF (1ºC) below setpoint and turn off at setpoint.
The auxiliary heat will activate when the room temperature is below the setpoint by the
auxiliary heat offset value (AU) plus heating cycle rate value (HC), as established during
configuration. When auxiliary
heat turns on “AUX” will be displayed. (See “Configuration
Menu Chart”, “Parameters”, and Figure 1.)
* Note: Auxiliary heat will only activate in conjunction with the compressor and fan and
therefore will be affected by compressor lockout delay settings
. (See “Configuration
Menu Chart”) Once activated, auxiliary heat will continue to run until the room
temperature is less than 2°F (1°C) below setpoint, and the first stage of heat will
complete the call.
3. When the thermostat calls for heat,
will display. If
is not displayed and
“COMP
DELAY” is flashing, the compressor lockout delay feature is operating in the heat pump
mode. (See
“Configuration Menu Chart”)
Emergency Heating System
The Emergency Heat System bypasses the heat pump to use the heat source connected to
termina
l “E” on the thermostat. It is typically used when compressor operation is not desired or
you prefer to use the backup heating system only.
1. Move the
SYSTEM
switch to the
EMH
position.
“EMH” will flash on the display as long as
