Alpine coach 1999 m36 mds
Pretty much everything was stock when we got it a couple months ago and we are working through differed maintenance and minor issues.
I am in the process of replacing a 4 button to a 10 button. I purchased two control boxes and a thermostat.
I asked the vender help desk and they said a 10 button would be a direct Replacement. Since 4 and 5 button are discontinued.
Well I am having an issue with the bedroom rear AC.
When the rj11 cable is plugged in to the rear control box the AC turns on the fan instantly and I get an “e1” error on the thermostat. However when the rj11 cable is unplugged the front zone 1 hvac works as it should. Heater turns on and so does AC, plus all fan functions.
Anyone upgrade from a 4 to a 10 button?
Zone 1 dip switch set to on for furnace, off for everything else.
Zone 2 dip switch set to on for zone 2, off for everything else.
Everything worked prior to replacement (except the on off switch on the four button needed to be set just right for it all to stay on during camping, we used a rubber band to hold it in place)
I cleaned off the rj11 cable ends. I might go buy a new rj11 telephone cable to test from front to rear, just to rule out the cable breaking when I swapped the control boxes.
I used this manufacturer guide
Email From vender….
The 5 and 4 button thermostat have been discontinued and out of production. The 10 button thermostat is the replacement. However, the 10 button control box will not work with an older heat pump unit. If you do not have a heat pump then proceed with changing control box and thermostat.
3314082.011 - White
3314082.000 - Black
3312020.000 - Control box
Dometic North America Elkhart United States