Troubleshooting

SOLVED: Error Code 120: kWh rate entered in the wrong format.


If you receive the error code – 120, the cost has been entered incorrectly. KWh rates are in cents (₵), not dollars. Anything less than a dollar has to be entered starting with a decimal. Example: 14.5₵ per kWh should be entered as .145.

Can the dual cable tester be used to measure the resistance of the floor sensor?


Warmup’s Dual Cable Tester (DCT) is designed to ONLY measure the resistance of heating cable(s), therefore, do not use the Dual Cable Tester to measure the resistance of a floor sensor, instead use a multimeter set at 20k ohms (Ω).

What if my thermostat screen is black and won’t turn on?


If your thermostat has no display and will not turn on when power button is pushed, the thermostat could be wired incorrectly. Click here for more details.

Check the Resistance Readings of your Electric Floor Heating System


If you purchased a Digital Multi-meter from Warmup you will have 2 connectors as shown below. Please make sure that the contacts that will be plugged into the multi-meter are properly exposed as illustrated below. It is possible that you may have to remove some of the sheathing from the connector ends to expose them enough to make the needed contact with the multi-meter in order to receive accurate readings.

What if my 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. 

What are the electrical requirements for my Warmup system?


Please verify that the circuit can handle the amount of amperage your heating system requires. Your thermostat can only handle up to 15 amps so if you are connecting multiple heaters to one thermostat location, you may need to use a relay and a larger breaker. Your or your electrician can find out the amperage rating of your specific floor heating system in installation manual or printed on the box. Note: Just because the Warmup thermostats are dual voltage, this does not mean you can supply any voltage to your heating system. You must supply the voltage supplied to the voltage of your specific heater.

Ground Fault Error: What does this Mean if my Thermostat has “Ground Fault Error” on the Display?


This message will occur if a ground fault is detected. Click “Read More” for details.

Why Won’t My 4iE Connect to the Internet?


Check you are using a WPA2 password format (less than 10 characters) on your network. Click “Read More” for details.

Why is my Floor Temperature Reading Incorrect?


If your floor probe is giving you a reading that is much higher or lower than the actual temperature of the floor, it is possible that your installer put the sensor probe and cold tail lead in the same conduit. Click “Read More” for details. 

Why hasn’t my Controller activated my snowmelt system if its snowing?


When the LTC is ON, your system will not turn on if temperatures reach or drop below 5°F. When the system is on and senses the temperature drop to 5°F, the system will delay-off. 

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