4iE Smart WiFi Thermostat

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The 4iE is a Smart heating thermostat that works with your smartphone to give you optimal, cost-effective and energy-efficient heating. For use with both electric and water underfloor heating systems, the 4iE does not require programming and uses Warmup’s latest technologies to ensure your home is always at the desired temperature, at the right time, for you.



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Why can’t I program my 4iE to read air temperature?


You can program the 4iE Thermostat to read the ‘Air’ temperature by following the steps below. Select Menu on the 4iE home screen Select Settings Select Advanced Settings Select Heating Settings Select Heating Limits Select your floating floor type (wood, vinyl and laminate) Select ‘Back’ twice Select Heating Preference Select Control Air/Floor Scroll up/down to […]

How do I add Traffic alerts to my 4ie?


The 4iE allows you to access traffic alerts from the HighWays Agency for A and M roads. Go to Profile page on my.warmup.com and click on the cog symbol next to the location name. Scroll down and click on Edit Location Roads can be added here. A roads and M roads only.

The 4iE wont let me set above a certain temperature ?


The thermostat is set in ‘Air’ Mode. The maximum set temperature in air mode is 30°C. The maximum temperature for Floor Mode is 40°C Delicate floor coverings need to have their temperatures limited. If the finished floor is set for wood, laminate, vinyl, a safety feature built into the thermostat will not allow you to […]

Why is my 4iE coming on during off times?


On the initial set up a set back temperature should have been set, this is temperature that you would like the underfloor heating to drop down to during the off periods. The setback temperature is the temperature the system drops down to when you do not wish the heating to be on. If the setback […]

Why is my 4iE Screen blank ?


If the 4iE screen is blank check the following: Check that the standby /display brightness is not on the lowest setting “0”. If you have set the standby brightness to 0 you will need to press the standby button at the bottom of the main screen to activate the screen so that you can see […]

The air temperature on my 4iE is not right


If you find that the air temperature on the 4iE is not correct, check that the thermostat has been set up correctly. The air sensor in the thermostat should not be located near any heat-inducing elements, such as spotlights or full sunlight. On initial 4iE setup, if the incorrect total wattage of the heaters or […]

4iE cannot find my SSID WiFi name


If your 4iE cannot find the SSID WiFi name please check the following: Check that your WiFi network is 2.4GHz. If it is, next make sure that the SSID name has not been hidden. You will need to go into your router settings to check this. ( usually it would have a tick box next […]

How do I add or change the energy costs on the 4iE?


To make changes to the energy cost on the 4iE follow the steps below: Go to the profile page on my.warmup.com and click on the cog symbol next to the location name. Scroll down and click on edit location Scroll down to Energy Monitor and add the cost per KW Select Update energy to save […]

Can the 4iE be used with Alexa?


The 4iE is compatible with Alexa so you can control your heating using voice control. To enable your 4iE to work with Alexa follow these steps: Firstly, make sure your 4iE is registered to your My Warmup account. You can do this through the MyHeating app or through the my.warmup.com web protal. Open the Alexa […]

Does the Myheating App have Data Protection?


MyHeating™ uses the same web security as online banking and each communication between your 4iE and MyHeating is protected using the same encryption the intelligence services use for classified documents. Warmup backs-up and stores all data safely encrypted to protect it, with firewalls and electronic surveillance in place. To ensure your system is safe, Warmup […]

How do I connect the 4iE® to your WiFi?


To connect the 4iE to your WiFi network follow these steps: Press the main menu button( 3 lines on main screen) Select settings > select network The thermostat will scan for available networks Select the Wifi network you wish to connect to > Press accept Enter your WIFI password by selecting the appropriate symbol and […]

Where do I find my 4iE’s Device Number?


First, the device number shows up during the initial startup menu and recommends the number be written down. Secondly, it can always be accessed afterwards on the device itself.

How Do I Enable to SmartGeo on the MyHeating App?


The Warmup SmartGeo is a way to allow your thermostat to combine the location settings on your device, occupancy sensing features and a few algorithms to create the most comfortable heat as efficiently as possible.

How do you add a Room using the MyHeating App


There are two ways to add a Room to your account, which will serve as a way to register your 4iE thermostat to your profile.

The first way is through the my.warmup.com profile and the second way is directly through the MyHeating App.

Does the 4iE have a battery backup?


Periodically the programming and date/time are stamped to a section of internal memory. This is then overwritten when the next stamp takes place. When the power is resumed following a power outage, the device will revert to the most recent stamp taken.

When Should I Select? Air vs. Floor when Programming my thermostat?


You can opt into using the air probe instead of the floor probe if you are more concerned about trying to achieve a specific air temperature, usually for primary heat.

What Home Automation Systems are the 4iE Compatible with?


Currently, the 4iE is compatible with Crestron and Control 4 home automation systems. Please contact the Warmup technical department for related documentation and drivers required to integration.

What size back box should be used for Mounting a 3iE/4iE thermostat ?


In order to properly mount your 4iE thermostat, you will need a back-box as well as a mud-ring. Warmup can recommend compatible items.

Why won’t my background picture upload on my 4iE?


This post explains the size requirements of the image file you are trying to upload as a 4iE background.

Why does my 4iE thermostat read a percentage?


When applied, you will select a number and this percentage represents the number of minutes the heat will be on out of every 10 minute cycle. For example, if you select 60%, the heat will be on for 6 minutes, followed by 4 minutes of the system being off. Then, after the 4 minutes, it will activate again for 6 and so on. This will continue until your programmed heating period ends or until you manually turn off the heat.

How do I upload my own background to my 4iE?


This is done on my.warmup.com. Click “Read More” for details.

How can I change from Celsius to Fahrenheit on my thermostat?


Go to Profile > Select the cog for the location > Scroll down and select Edit Location.

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. 

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.

What if my Warmup 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.

My 3iE/4iE thermostat reads “ER1 Out” on the display?


It indicates that the thermostat is not set up correctly. Click “Read More” for details.