EWC Controls Forum

I will call next time it the A/C turns off and it is showing the "check system" message. Thank you!

Steven, thanks very much. Do you think the "check system" message could be thermostat related? I hate to spend $500 for a thermostat if that is not a logical assumption.

Randomly I have been getting a "Check System" message on my CTK01 thermostat and when that happens the A/C will not work for a while. I sometimes turn the system off and back on a few times or flip the breaker and the system will restart. I have had three HVAC companies check the system an...

Randomly I have been getting a "Check System" message on my CTK01 thermostat and the A/C will not work for a while. I have had three different HVAC companies check the system and they cannot find a problem. If I pop the thermostat off the wall and replace it, the A/C will come on again. Th...