TH115 Thermostat
The Warmup TH115 Thermostat is a floor heating thermostat with a built-in GFCI. The FAQs below cover installation, troubleshooting, and more.

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1 Does the TH115 Floor Heating Thermostat have GFCI Built In?
Ground Fault protection is a must, especially with bathroom and other "wet" installations. Are you covered? Click "Read More" for the answer.
Learn more2 How Do I Identify Which Warmup Thermostat I Have?
Do you have a Warmup Thermostat but are unsure which model you have? Read this post to help identify which model you have installed.
Learn more3 TH115 Floor Heating Thermostat Error Message: HI
What do you do when this message appears? Click "Read More" for details.
Learn more4 TH115 Floor Heating Thermostat Error Message: LO
What do you do when this message appears? Click "Read More" for details.
Learn more5 What if my TH115 floor heating thermostat is not turning on?
The first items on the checklist would be to ensure that the breaker is on and that power is being supplied to the unit. Click" Read More" for details.
Learn more6 What if my TH115 Floor Heating Thermostat says system is on however the floor is not heating up?
If you installed your thermostat over 3 years ago and it seems to be functioning the same, however your floor is no longer heating up, call your electrician. Click "Read More" for details.
Learn more7 Why is my floor heat not working even though there are no error messages on my thermostat?
Discover why your floor heat is not working despite there being no error messages showing on your thermostat. This guide explains common causes of heating issues and troubleshooting tips to restore your system.
Learn more8 TH115 Floor Heating Thermostat Keeps Tripping
One reason your floor heating system keeps tripping has to do with whether you have multiple GFCI protection. Click "Read More" to get the details.
Learn more9 Installation of the floor sensor probe of the TH115 Floor Heating Thermostat
Follow these simple instructions to install the floor sensor probe. Click "Read More" for details.
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