Furnace mode on thermostat

Steadfast

Active Member
We have the Dometic single zone LCD thermostat in our 2011 Big Horn. In their brochure below, they indicate that this thermostat "lets user select 1 to 2 degree on/off differential". If this is true, I have no clue as to how to do this selection. As it is now, the furnace kicks in late and runs too long, taking us from cool to hot before kicking off. Has anyone found this adjustment? Thanks.
http://www.dometic.com/75ba5bd6-30af-405e-ac27-b057ade5d705.fodoc
Craig
 

danemayer

Well-known member
The manual says:

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
configured to operate using an On/Off differential of either 1 degree
F or 2 degree F. This feature is programmed during the system initialization.
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 degrees
F differential.
 
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