Before we begin answering the frequently asked questions, these instruction and installation guides may be useful:
Now on to your frequently asked questions about NuHeat thermostats!
- What if my GFCI light is on?
- What does an "LO" reading on screen mean?
- What does an "HI" reading on screen mean?
- How do I set the time & date on my thermostat?
- Is the thermostat pre-programed for desired comfort, economy, and vacation temperature settings?
- How do I manually adjust the temperature?
- Nuheat Troubleshooting Guide
Open the left panel of the thermostat.
- Double check to make sure the On/Standby switch is in the "On" position.
- If not, switch the thermostat and the system "On"
- Open the left panel on the thermostat.
- Switch the "On/Standby" switch to "Standby" for three seconds to reset the GFCI.
- Or at your electrical box flip the breaker that to the Nuheat system off.
- Flip the breaker back on.
- If the GFCI light is still on - call your electrician.
What does an "LO" reading on screen mean?
It means that the floor sensing probe is damaged, missing or loose. Call your electrician.
What does an "HI" reading on screen mean?
The floor sensing probe is reading a temperature over 104F.Probe is likely too close or is touching a heating wire inside the mat. The probe must be relocated. Call your tile setter to reposition the probe.
How do I set the time & date on my thermostat?
Note: When programming Time - the thermostat will denote pm but does not have an indicator for am.
- Open the left side door of the thermostat.
- Use the Hour and Minute buttons to set the correct time.
- Use the Day button to set the correct day.
Is the thermostat pre-programed for desired comfort, economy, and vacation temperature settings?
The Thermostat comes pre-programmed with the following temperature settings.
- Comfort Temperature Setting: 88F
- Economy Temperature Setting: 74F
- Vacation Temperature Setting: 74F
How do I manually adjust the temperature?
If these default temperature set points do not suit your personal preferences continue with the following steps.
Comfort Setting
- Open the right panel of the thermostat.
- Press or tap the sun symbol.
- The Temperature reading will appear with a small arrow pointing to it.
- Use the arrow buttons to set the desired comfort setting.
- Once desired temperature is selected press and hold the sun button until the sun icon appears below the temperature.
- The comfort temperature setting in now set.
Economy Setting
- Open the right panel of the thermostat.
- Press or tap the moon symbol.
- The Temperature reading will appear with a small arrow pointing to it.
- Use the arrow buttons to set the desired economy setting.
- Once desired temperature is selected press and hold the moon button until the moon icon appears below the temperature.
- The Economy temperature setting in now set.
Vacation Setting
- Open the right panel of the thermostat.
- Press or tap the suitcase symbol.
- The Temperature reading will appear with a small arrow pointing to it.
- Use the arrow buttons to set the desired vacation setting.
- Once desired temperature is selected press and hold the suitcase button until the suitcase icon appears below the temperature.
- The Vacation temperature setting in now set.
- Tap the “sun” button to increase the current temperature.
- Tap the “moon” button to decrease the current temperature.
The switch to manual mode will be indicated by the hand / pointing finger symbol.
| PROBLEM | CAUSE | SOLUTION |
| Programmable thermostat screen is blank | Programmable thermostat is not turned on | Turn switch to ON |
| No voltage to programmable thermostat | Call your electrician | |
| Faulty programmable thermostat | Call Nuheat at 1-800-778-9276 | |
| GFCI light is on | Unit needs to be reset | Switch T-Stat off then back to ON |
| Programmable thermostat has a defective GFCI that is oversensitive | If unit is under warranty, return to Place of Purchase for replacement | |
| Nuheat system has been damaged as determined by ohms readings | Call Nuheat at 1-800-778-9276 | |
| Floor heats but GFCI comes on only occasionally | Programmable thermostat has a defective GFCI that is oversensitive | Call Nuheat at 1-800-778-9276 |
| Halogen lights installed causing electrical noise to trip programmable thermostat | Call Nuheat at 1-800-778-9276 | |
| "LO" reading on the screen | Floor sensing probe is damaged, missing or loose | Call your electrician |
| Problem with programmable thermostat | Call Nuheat at 1-800-778-9276 | |
| "HI" reading on the screen | Floor sensing probe is reading a temperature of over 140F | Call your tile setter to reposition the probe |
| Probe is likely too close or is touching a heating wire inside the mat | Call your tile setter to reposition the probe | |
| Probe is damaged | Confirm with electrician and have tile installer install new probe under tile | |
| Programmable thermostat won't hold a program | Problem with programmable thermostat | Call Nuheat at 1-800-778-9276. |
| Thermostat programs are not set properly | Check out Program instructions | |
| Programmable thermostat enters "ON" mode to soon | Early start function turning on too soon | Disable early start function on back of faceplate |
| Mats do not heat up | Bad connection in junction box | Refer to instructions and reprogram |
| No voltage coming to control (line) | Call your electrician | |
| No voltage coming out of control (load side) | Call your electrician - return thermostat to Place of purchase for replacement | |
| Probe placed on mat wire | Call your tile setter to reposition probe | |
| Mat wire is damaged | Have electrician check for correct mat readings. If incorrect, contact Nuheat at 1-800-778-9276 | |
| Probe in direct sunlight or under obstruction | Call your tile setter to reposition probe | |
| Control showing much higher temperature than set | Problem with programmable thermostat | Return programmable thermostat to place of purchase |
| Probe in direct sunlight or under obstruction | Call your tile setter to reposition probe | |
| Control shows a cool floor temperature but floor feels warm. Heating indicator bars are showing. | Probe placement. Not on heating pad | Call your tile setter to reposition probe |
