Thermostat Issue?

[kcarlasc1]

Hi All,

I have two C4 Thermostats for about 4 years now. They are running 1.8.2 and I have watched my electric bill rise and my units running longer and longer. Both of them turn off after reaching the set temp, but sometimes have to climb to 3 or 4 degrees above the turn on temp before they click on again causing the units to run longer to cool it down. Attacheded a screen shot of the setup... If anyone has any ideas it would be a great help

[CFUG]

^I don't have any thing good to say about them. All of mine take 4 to 6 degF of positive correction and all run the equipment way too long. The good thing is I don't really need them where I live.

[srhamy]

Ditto, I had similar issues, and sold mine.

Before giving up try:

1. Make sure it is wired correctly.

2. Make sure there is a common wire, not on power stealing

3. Calibrate to a thermometer.

Even with that I had the same problems. One fact I was able to find is that the undershoot/overshoot is a little misleading. Info is posted at:

http://www.c4diy.com/wiki/index.php?title=CCZ-T1-W

[kcarlasc1]

Thanks...

srhamy.. its wired correctly and on a common wire and has been calibrated...

I will probably do the same and just get a couple of new setback thermo's

Thanks

[dogdvr]

Change your engage point to 1 and see if that helps.

Brent

[EagleMoon]

One fact I was able to find is that the undershoot/overshoot is a little misleading. Info is posted at:

http://www.c4diy.com/wiki/index.php?title=CCZ-T1-W

I'm curious about what you used to determine that. Email me the details if you prefer.