Troubleshooting Guide

Issue Symptom Solution
Programmable thermostat screen is blank Programmable thermostat is not turned on Open left hand door. Turn On/Standby 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 On/Standby to "Standby" then back to ON
  Programmable thermostat has a defective GFCI that is oversensitive If unit is under warranty, return to Point of Purchase for replacement
  Nuheat Mat system has been damaged as determined by ohms readings Call Nuheat at 1-800-778-9276
Floor heats but GFCI comes on OCCASIONALLY Programmable thermostat has a defective GFCI that is oversensitive  
  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 to control Call your electrician
  No voltage out of control Call your electrician - return programmable thermostat to POP 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 POP
  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
Issue Symptom Solution
Programmable thermostat screen is blank Programmable thermostat is not turned on Open left hand door. Turn On/Standby 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 On/Standby to "Standby" then back to ON
  Programmable thermostat has a defective GFCI that is oversensitive If unit is under warranty, return to Point of Purchase for replacement
  Nuheat Cable System has been damaged as determined by ohms readings Call Nuheat at 1-800-778-9276
Floor heats but GFCI comes on OCCASIONALLY Programmable thermostat has a defective GFCI that is oversensitive  
  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 the cable 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
Floor does not heat up Bad connection in junction box Refer to instructions and reprogram
  No voltage to control Call your electrician
  No voltage out of control Call your electrician - return programmable thermostat to POP for replacement
  Probe placed on cable Call your tile setter to reposition probe
  Cable is damaged Have electrician check for correct cable 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 POP
  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. Incorrect probe placement. Call your tile setter to reposition probe