Capacitive touch thermostat

Banjo64 · 01-07-2018, 01:48 PM

Can not seem to regulate thermostat to keep inside temperature at steady temperature. There is almost a 8 degree difference to get it to come on. Set on 74 , gets down to 66 than comes on. Do I need to adjust something? Have A214HW.

carlsbad · 01-07-2018, 09:23 PM

Furnace or Cool Cat?

Banjo64 · 01-07-2018, 11:53 PM

Furnace

**Bama Rambler** · 01-08-2018, 09:26 AM

What is the make and model number of the thermostat?

Where is the thermostat located in the RV?

sundancer330 · 01-08-2018, 03:05 PM

Here is a link to the Dometic thermostat manual, may need to adjust some settings.

http://www.gulfstreamcoach.com/media...tat-Manual.pdf

FrayAdjacent · 01-10-2018, 01:27 AM

I just did a first camping trip in my 194HW in cold weather... and yeah, there's a huge difference in temperature when the furnace turns off (and it's warm inside) and when it finally turns back on (when it gets cold). I'd say 8 degrees sounds about right.

I'm wondering if the Dometic thermostat has the temperature sensor on the BACK... which would be inside the cabinet with the microwave in it. I could see that being a factor in the wide temperature swings - the temperature would take longer to both increase and to decrease in a smaller enclosed space like that cabinet. I may have to pull the thermostat off and see if I can see where the sensor bit is.

**Bama Rambler** · 01-10-2018, 01:17 PM

I don't know where the thermistor is on the capacitive models is, but on the LCD units it's right at the bottom near the back of the case.

FrayAdjacent · 01-10-2018, 04:10 PM

Quote:

Originally Posted by Bama Rambler

I don't know where the thermistor is on the capacitive models is, but on the LCD units it's right at the bottom near the back of the case.

And I'm guessing (I guess I could go out to the garage and look at mine) that it's really going to be measuring temperature inside the cabinet behind the microwave.

D-mo · 01-11-2018, 01:04 PM

in 2011 we got the non digital thermo..
I'm thinking in 2012 the digital units were installed.
you have to think about the space your heating...not big...at all.
I would think that the furnace has a lag time to turn back on if it shut off...to protect circuits, heat exchanger and whatever.
if you notice...the furnace does not shut down after de-firing...the fan stays on to remove the heat from the exchanger.

just my thoughts

dmo

carlsbad · 01-11-2018, 02:38 PM

At home if I set the thermostat downstairs to 64 it is 68 in the bedrooms. I suppose if I wanted it 64 upstairs I could just lower the darn thing to 61 and see how it works out.

jimstark · 02-07-2018, 08:30 PM

I have a 2018 T21TBHW and my furnace acts the same. Set the thermo for 64 degrees and it doesn't come on until 58 degrees. What a pain, the only thing I don't like about the camper!

mickrock · 02-07-2018, 09:35 PM

will be less if there is a fan running in the camper to make the air temps
throughout the camper more uniform.
Even a small fan helps, because the area is small.

And, if the upper door latch is not fastened, wow, what a draft
coming in!

That is why I like the Coolcat for heat, with its fan running full-time.
But, this post is not about the Coolcat.

Good luck!

rockfordroo · 02-07-2018, 10:02 PM

First fix is replace with a digital T-stat if you have an analog one.

Others have reported improvements by removing the T-stat and stuffing insulation into the wall behind it.

mickrock · 02-08-2018, 09:09 AM

can be switched over to replace the analog thermostat in an A frame?

I have not seen a post from anyone who has done that mod.

I have seen posts about a special kit that is also needed.

And, I actually read a post saying the Coolcat also needed to be replaced.

Some of those older posts might be outdated.

rockfordroo · 02-08-2018, 01:14 PM

Quote:

Originally Posted by mickrock

can be switched over to replace the analog thermostat in an A frame?

I have not seen a post from anyone who has done that mod.

I have seen posts about a special kit that is also needed.

And, I actually read a post saying the Coolcat also needed to be replaced.

Some of those older posts might be outdated.

If you have an analog Coleman-Mach T-stat, they make a plug-and-play digital version. Same with certain model Dometics.

A Honeywell RTH-111B available at Home Depot can replace any simple analog T-stat. Do a search and you'll find lots of folks who've done it. I'm attaching a wiring diagram for the Honeywell vs Coleman-Mach. The Dometics are a little more difficult as they apparently use relays in the AC unit.

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