Random a/c issue fixed?
I have been having a random A/C problem for the past year or so. A/C will function normally, but thermostat will turn off with no warning. Sometimes it comes back on, sometimes not and you just have...
Forum Discussion
Hemling wrote:
It is a Coleman Mach. It is a digital display - very basic 3-button unit nothing fancy. Sometimes the A/C would shut off and the display stays on and you can just turn it back to 'cool' but other times the entire thermostat would go dark and there is nothing you could do. In my attempts to fix it I replaced the thermostat with another identical unit and it still did it. Also, jumping power to A/C and high fan does nothing (no power to thermostat at all) when it goes totally dark.
What you are describing is a wire problem between the Wall tstat and the upper unit. Either the wires are loose or corroded at the upper AC unit, or there is a fault in the wire bundle from the Wall Tstat going to the upper AC unit. Click the link. Is this what your tstat looks like? Doug
https://www.rvupgradestore.com/Coleman-Mach-Digital-Wall-RV-AC-Therm-BLK-Plugs-p/41-0061.htm
