Comfort ZC thermostat issues
The thermostat kicked on the heater (gas mode) and after two hours it shut off and displayed no temperature but rather 00 and was not responsive when any of the buttons were pushed. I unplugged it and...
Forum Discussion
enblethen wrote:
Some of these thermostats are effected by flourescent ballasts interfering with the signal to AC units or furnaces.
If you have flourescent lights, turn them off, reset the thermostat, by removing fuse, wait 5-10 minutes, plug it back in and let the system reboot. This could take 15-20 minutes.
If this solves your problem, one or more of the flourescent ballasts are going bad. Good fix is to convert to LED tubes.
It is not just fluorescent lights that cause this. It is also caused by ac ripple that is sent by another dirty 12 volt appliance. FINDING that appliance is a real time consumer. Tiffins had this problem and they were not using any fluorescent lights in the affected models. Tiffin finally dropped the ZC zone control tstat and went to separate tstas for each roof top unit. RVP is aware of the problem(no fix), but like you, they state to find the offending appliance. Tiffin tried a filter at the connections behind the Tstat, but it did not always work. Doug
