Coleman Mach thermostat no power.

[nashmd454]

This am I went to turn on my furnace and the tstat was reading 61. Right when I slid the selector to heat it went blank. No power nothing. Tried watching videos and saw nothing for my coleman mach system. Please help.

[Sudsy]

Originally Posted by nashmd454

This am I went to turn on my furnace and the tstat was reading 61. Right when I slid the selector to heat it went blank. No power nothing. Tried watching videos and saw nothing for my coleman mach system. Please help.

What kind of camper?



Are you plugged in to AC power?


Is your battery dead?


Sudsy

[nashmd454]

Originally Posted by Sudsy

What kind of camper?



Are you plugged in to AC power?


Is your battery dead?


Sudsy

It is a 2005 National Dolphin. I am plugged into shore power and no my batteries are just fine. There is no battery on the tstat but there is a fuse. It appears to be good. I put another in to check and still nothing. It is a Coleman Mach basement mounted ac/furnace.

[JesseJ1826]

On mine the thermostat gets it's power from the wiring at the furnace. Check there for any loose connections. That was the situation when my thermostat went dead.

[MSHappyCampers]

Hi ! Welcome to IRV2! We're sure glad you joined the gang!

We have dometic thermostats so don't know how similar they are. The dometic thermostats are known for being "flakey" and going blank for a minute or when changing functions. It will start working again after a minute or so! (usually) .

Good luck, happy trails, and God bless!

[Sweetbriar]

Originally Posted by JesseJ1826

On mine the thermostat gets it's power from the wiring at the furnace. Check there for any loose connections. That was the situation when my thermostat went dead.

I'll second that. 12VDC from the furnace.