Installing a Dometic single zone LCD Thermostate in my rv. Getting a code E1. Everything seems in the right place. Is there something the instructions for got to mention? How do I get it to work?

unplug cable at both ends. remove cover from t-stat. using contact cleaner spray contacts on cable and points it connects to. if necessary replace t-stat and cable

lost communication between thermostat and module board.

I assume you are seeing this at the zone board at the unit?
How many zones can a 20-40 ft RV have? seems silly

is 1/2 the coach not getting any thing?

post the model and serial number.

the heat and cool use the same fan. if compressor is running with heat then you have relay issue

Error Code:
E1 Loss of communication between the Single Zone LCD thermostat and the mod-ule board. LCD will cycle between E1 and the 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. Furnace, heat strip, heat pump and fan mode of operation can
continue to operate but displays the last temperature set-poi

Here is a link to owners manuals etc that you can download and keep a copy for future. (www.bryantrv.com )

Hi By E1 error it means
Loss of communication between the Single Zone LCD thermostat and the module board. LCD will cycle between E1 error.

Check the link for regular maintenance Of the LCD thermostat.
If it doesn't help then you have to replace the LCD thermostat.

Ajin

http://www.google.com/url?sa=t&rct=j&q=dometic%20model%203313192%20&source=web&cd=1&ved=0CCwQFjAA&url=http%3A%2F%2Fmanuals.heartlandowners.org%2FHeating-Cooling%2FA-C_Units%2FDometic%2FDometic_Single_Zone_LCD_Thermostat_Operating_Instructions.pdf&ei=hOg0T7OUNIjkrAer4Ny6Dw&usg=AFQjCNEn2y9-ItUcF2KRJZ0dm0Ftrq8Jhw

This one is easy your thermostat is gone. You may notice the unit never shuts off.

there is a one somal swicth in thermostate you put there (WD40)and trun back and farwead then bring same place