Thermostat
I have a Coleman Mach with old mechanical tstat. As all the older ones it has a wide swing. Is there a newer more modern replacement for this? Thanks for any info.
Forum Discussion
One thing to watch out for. When I installed it, the heater worked just fine, but the A/C seemed to work intermittently. It would work, then I would try it again, and it wouldn't. Was really puzzling. After tearing it apart and puzzling over it for hours, I decided to read the instructions :) Turns out that it (at least mine) has some sort of re-start protection that won't start the A/C unless it has been off for 5 mins.
Another interesting point. These thermostats normally requires +24V for power, which the house supplies, but we don't have on our RVs. This install will be running completely on the AA battery inside the unit, so you'll have to replace the battery on occasion. Seems to last a year for me. The supply connection is left unconnected.
The ground wire from your RV doesn't go to 'common' like you think it should (in fact it's left unconnected).. The ground wire goes to the RH and RC (heater/cooler power) connections since our units (at least mine) trigger on ground instead of the normal +24V. Backwards, but it works.
Another interesting point. These thermostats normally requires +24V for power, which the house supplies, but we don't have on our RVs. This install will be running completely on the AA battery inside the unit, so you'll have to replace the battery on occasion. Seems to last a year for me. The supply connection is left unconnected.
The ground wire from your RV doesn't go to 'common' like you think it should (in fact it's left unconnected).. The ground wire goes to the RH and RC (heater/cooler power) connections since our units (at least mine) trigger on ground instead of the normal +24V. Backwards, but it works.
