This page explains why Warmup does not recommend you cut the wire for any reason and provides solutions to having too much cable.
Troubleshooting
Instead, try pulling the cable off the mesh and spacing the cable every 2 or 2.5 inches apart. Consult your installation manual with further questions regarding where the cable or mat can be run.
That “Ground Fault” error on your thermostat after several years could indicate your floor heating system had been damaged during installation. Click “Read More” to learn why.
It indicates that the thermostat is not set up correctly. Click “Read More” for details.
The TDR Meter is used to measure the distance to an existing fault in the wiring of your heating system. It sends an electrical pulse into the connected cable, traveling along the cable until it reaches the fault and then that pulse is sent back to the TDR. The time it took for that pulse to reach the fault and travel back is measured and converted to a distance reading that will appear on the TDR Meter.
Here is an instruction sheet that will guide you through the repair process of a damaged heating system wire.
The thermostats come with a 9’ sensor cable to detect the temperature under the floor finish. The end of the probe wire contains a capped sensor that should be evenly centered between two heating cables at least 12” into the heated area. At no time should the probe wire cross the heating cable.
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.
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.
When slight damage is caused to the wire, a visual assessment needs to be made. Read more.