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.
Troubleshooting
The ER1 message will also occur if no floor sensor is connected to the thermostat. Have your electrician make sure that the sensor probe wires are securely connected in ports 1 and 2 of the thermostat. If sensor was not installed, your thermostat can be programmed to read the air temperature instead by following the steps below.
This may also mean that you have not yet registered the actual thermostat under your location as a room. Please make sure you have added a room, which requires you to enter the thermostats unique device number to fully register.
The HI/LO error message means that the ambient sensor readings (on snow sensor) are out of reliable measuring range. Click “Read More” for details.
The overload message will occur if more than 15 AMPS has been connected to the thermostat. Click “Read More” for details.
Error 2 “SensErr 2” will appear when the upper limit sensor is not connected or has short-circuited. Click “Read More” for details.
Error 1 “SensErr 1” will appear when there is a communication error with one (or more) snow sensors. Click “Read More” for details.
Without a thermal break, the concrete acts as a heat sink. Therefore, the heat is drawn first into the concrete sub-floor before your floor covering. This is why Warmup recommends installing Warmup Insulation Boards over the concrete sub-floor to act as a thermal break. This forces the heat radiate upwards first rather than down into the concrete slab. Warmup insulation boards can increase ramp up time by over 70% and decrease heat loss by over 90%.
Please click “Read More” for instructions on how to un-mount your thermostat
The ER2 message will occur if the floor sensor has a short circuit or has a loose connection. Click “read More” for details.
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