Troubleshooting

The temperature is below 15 degrees F, it is snowing and my sensor hasn’t triggered. What’s wrong?


You may need to change the setting for the “Low Temperature Cutoff – LTC.”  Click “Read More” for an explanation.

What does “ER1” on the thermostat display mean?


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.

How do I reset/power cycle my 4iE?


First, loosen the screws at the bottom of your unit at shown in the video clip below. Then remove the face of your thermostat by lifting up and off. On the back of the face is a small reset button. Using a small screw driver or writing utensil, press and hold the reset button for 15 seconds. Then place the face of the unit back on making sure the 8 gold pins line up correctly with their counterparts.

Why is my 4iE Connected to Internet But Showing an ‘!’ on the Screen?


Ensure you have created your account and registered the thermostat using the Device Number. Click “Read More” for details. 

How can I keep my relay from being loud/buzzing?


All relays ‘buzz’. A good example is the transformers for low voltage lighting in the house. When the room is quiet, you can hear the humming of the transformer or relay. Click “Read More” for details.

TH115 Floor Heating Thermostat keeps tripping


One reason your floor heating system keeps tripping has to do with whether you have multiple GFCI protection. Click “Read More” to get the details.

Can I use the TH115 Floor Heating Thermostat with other floor heating systems?


While this might be an option, caution should be exercised.  Click “Read More” for an explanation.

TH115 Floor Heating Thermostat Error Message: ER


What do you do when this message appears?  Click “Read More” for 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 Does the Control Fault Error Message Mean?


The Control Fault message might occur for several reasons. Please contact your electrician to have them test the resistance of your heating system based on the heating model that was installed in your floor using a digital multimeter set to a 200 ohms scale.