Fried thermostat for Geothermal. Need help!

[mires]

Hey guys. I have a waterfurnace geothermal system that I need a new thermostat for I think. My girlfriend shuffled over to it this morning to adjust it and sent a strong jolt of static electricity to it. It shut off but turned back on when I removed the unit from the wall and reconnected it. Now, however it won't stay where I set it. I set it at 73 degrees but it immediately goes up to 95!! Also, the backlight stays lit and a couple other wonky things. Unless any of you have any ideas of how to fix it, I guess I need to replace it. Problem is I am having trouble finding a unit that doesn't cost $$$ that is 3 stage heating and 2 stage cooling. I know next to nothing about HVAC !

 

[ctfjr]

Without knowing what you have other than a 3H/2C heat pump stat you might take a look at the Honeywell TH6320WF1005. Its 3H/2C and wifi and should be just over $100. Be sure to check that it supports all the terminals you are using.

 

[kd3pc]

best is to replace it, easiest is to replace it with one just like the one you have...that may cost a bit, but will save you a service call, installation problems, wondering whether it will work - etc.

You might call the installer and ask what the newer version of the one you have is, and will it swap out like you want.

Replacing with a generic box store unit will not be the way to go. You have a great system, don't cripple it with junk

 

[79firebird]

Replace it same thing happened to one we had at work .