Dead furnace and thermostat feed
Late last year, I swapped out a mechanical Coleman Mach thermostat for a Honeywell digital. The A/C worked fine on the Honeywell but the furnace would not kick on and I ignored the issue believing it was a programming issue with the new thermostat.
This weekend we camped and the A/C would not come on. Thinking I had an issue with the Honeywell, I swapped the Coleman back in but the A/C and furnace were still dead. After some troubleshooting, I determined the 12V POS feed to the thermostat was dead. I tapped an adjacent light for 12V and ran it to the thermostat and got the A/C running again but the furnace is still dead.
The furnace and fridge are on the same fuse and the fridge runs fine on 12V/gas. I believe the Atwood furnace supplies 12V to the thermostat (red/white) wire but I need to remove my sofa to gain access to the furnace. I also saw in the furnace manual that some Atwood models have a reset button but I have never seen one in my TT since I bought it 3 years ago. Any suggestions or do I need to pull the sofa and remove the lauan covering the furnace to get a shot at it first?
This weekend we camped and the A/C would not come on. Thinking I had an issue with the Honeywell, I swapped the Coleman back in but the A/C and furnace were still dead. After some troubleshooting, I determined the 12V POS feed to the thermostat was dead. I tapped an adjacent light for 12V and ran it to the thermostat and got the A/C running again but the furnace is still dead.
The furnace and fridge are on the same fuse and the fridge runs fine on 12V/gas. I believe the Atwood furnace supplies 12V to the thermostat (red/white) wire but I need to remove my sofa to gain access to the furnace. I also saw in the furnace manual that some Atwood models have a reset button but I have never seen one in my TT since I bought it 3 years ago. Any suggestions or do I need to pull the sofa and remove the lauan covering the furnace to get a shot at it first?
