Operating instructions

9
In the FURNACE Mode the system will cycle the RV’s furnace On
and Off based on the room air temperature and the temperature set-
point on the Single Zone LCD thermostat. The system can be con-
guredtooperateusinganOn/Offdifferentialofeither1degreeF
or 2 degree F. This feature is programmed during the system initial-
ization. See “System Initialization” on page 3.
To set the temperature differential the system must be Off. Press
the“―” button and, while holding it, also press and hold the On/Off
Mode button for three seconds. Release the On/Off Mode button.
Then release the “―”button.Pressthe“+” button to toggle between
“d1”and“d2”, “d1” for 1 degree F differential and “d2” for 2 de-
grees F differential.
“Heat Pump” - Heat Pump Mode (Select Models)
Heat Pump Operation: This mode of operation is customer chosen
andisusuallyselectedwhentemperaturesarebelow70°Fandthe
customer needs warmth in the living space rather than cool down.
Thisreversestherefrigerantowintheairconditionerandcauses
the inside air to dispense warm air rather than cold and the outside
air to dispense cold air rather than warm.
This mode of operation creates a dilemma where the outside coil
which is now dispensing cold air can freeze up due to the cold air
blowing across the coil mixed with the outside temperature. A freeze
up of the system can render your heat pump inoperable. Therefore,
we have a defrost feature that will prevent this from happening. See
"Special Features", on page 11 for more information on defrost
cycle.