How do I connect my WSM-252W to WiFi?

Looking for help connecting your WSM-252W to WiFi? Follow along here for support.

How do I test a floor probe?

If you believe that your floor probe readings are inaccurate or if you are getting an ER1 message, you may want to test your floor probe. Learn how-to here.

How do I test my heating cable(s)?

Warmup recommends testing your underfloor heating cables before, during, and after installation. Follow along with this post for support.

What is the difference between a Watch Dog and an Alligator?

It is important to test underfloor heating cables before, during, and after installation with the proper equipment. Read on here for our recommendations.

Sensor not Triggering may be Low Temperature Cuttoff

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

ER1 on the Thermostat Meaning

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.

Reset or 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 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 or 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.