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DOMETIC RV Air Conditioner Cool Furnace Thermostat User Guide

Dometic Thermostat Guide  
b. Tap the Mode button to Fan and select Auto. Remember this means the  
overhead fan only comes on when the A/C compressor comes on, so with the  
furnace the overhead fan will remain off.  
c. Tap the Mode button twice to get to the Furnace  
d. Tap the up arrow to set the temp to 80 degrees  
Within a few seconds you should hear the furnace fan come on and then a clicking  
sound before the furnace fires up. Notice that the overhead fan does not come on.  
Should you wish to run the overhead fan while the furnace is on, go to FAN and change  
the AUTO fan setting to Low or High.  
3. Leaving the A/C on while you are out on a warm day:  
a. Tap the Mode button to Fan, then select Auto using the up/down arrows.  
b. Tap the Mode button again to get to the Cool screen.  
c. Change the selected temp to 80 degrees  
The A/C compressor will cycle on when the trailer gets above 80 degrees and come on  
regularly to maintain this temp. This is ideal if you have a warm day and don’t want to  
let your trailer to get too hot.  
4. Setting the fan and furnace for sleeping during colder evenings:  
a. Tap Mode button to Fan and select Low using the up/down arrows.  
b. Tap Mode twice to get to the Furnace screen and set your minimum temp for  
overnight sleeping.  
c. I like it pretty cool, so we’ll have the furnace kick on when it hits 55 degrees.  
The fan will come on Low and stay on. The furnace, however, will only come on when  
the temp goes below 55 degrees. Make sure you don’t have anything in front of the  
furnace overnight. Also, the furnace exhaust can be very hot outside the trailer. Make  
sure you don’t have anything impeding the furnace exhaust.  
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Error Code (to insert into description):  
E1 - Loss of communication between CT thermostat and module board. LCD will cycle be-  
tween E1 and previous mode setting. System will shut down.  
E2 - Open circuit or out of range Indoor Temperature Sensor. Heating and cooling  
operation will be locked out. Fan operation can continue to operate.  
E3 - Shorted Indoor Temperature Sensor. Heating and cooling operation will be locked  
out. Fan operation can continue to operate.  
E4 - Open circuit or out of range Outdoor Temperature Sensor (select models). Heat Pump  
operation will be locked out. Air Conditioner, Fan, and Furnace operation can continue to  
operate.  
E5 - Open Circuit or out of range Freeze Sensor. Air Conditioner mode of operation will be  
locked out, but displays the last temperature set-point.  
Source: Manual for Later Bluetooth Model (pdf): https://www.dometic.com/assets/46/43/operating%20manual_64643.pdf  
GeneralDetails
NameDOMETIC RV Air Conditioner Cool Furnace Thermostat User Guide
MakeDometic
LanguageEnglish
FiletypePDF (Download)
File size0.1 MB
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DOMETIC RV Air Conditioner Cool Furnace Thermostat User Guide