GFI on heated floor thermostat


Old 10-17-20, 09:41 AM
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Unhappy GFI on heated floor thermostat

My heated floor worked perfectly for 10 years! This fall, GFI stays on. I tried turning off and on the thermostat and breaker as I found on youtube. Nothing worked!
Can I repair or do I have to buy a new one?
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Old 10-17-20, 09:45 AM
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Welcome to the forums.

A little confusing.... if the GFI is working why would you be resetting the circuit breaker ?
What is the problem..... no display ?
A model number of the thermostat would be helpful.
Old 10-17-20, 03:19 PM
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Usually there is separate GFCI reset button on the thermostat. Look for the reset button or search on-line for manual.

If you tried to reset GFCI and keeps tripping, there maybe a fault in your floor heater. Turn off the breaker, pull the thermostat, measure resistance between hot and ground and neutral and ground. If you get near 0 ohms, you have a short. Even if that checks out, there may be a leakage current, which is hard to measure without a special tool.

Also, try resetting GFCI on the thermostat with heater wire disconnected from thermostat. If it still does not reset, replace the thermostat.
If it does reset, then it is your floor heater that has ground fault and most likely you will have to remove the floor to replace.
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