Why is My Electric Radiator Not Heating?

Aug 03, 2023, 13:00pm

There are several types of radiators such as the water radiator or the electric radiator. It is not uncommon to see failures that can be related to temperature.

When an electric radiator does not heat up, you must check:

  • the power outlet
  • the wiring
  • the thermostat
  • resistance
  • the temperature probe
  • the electronic card

The electric radiator, a staple in many homes, provides reliable, efficient, and consistent heating. However, when these radiators fail to work as expected, it can be a considerable inconvenience, particularly during colder months. If your electric radiator is not heating, the reasons could be many – ranging from a simple power issue to a more complex internal problem. This article will delve into the possible causes behind an electric radiator not heating and provide potential solutions.

Why is My Electric Radiator Not Heating?

1. Power Issues

The most obvious reason your electric radiator may not be heating is a simple power issue. Ensure that the radiator is plugged in securely and the outlet is functioning correctly. If it’s plugged into a power strip or surge protector, verify that the device is turned on and working. You may want to test the power outlet by plugging in another appliance to ensure it is not the problem. Also, check your circuit breakers; if the breaker for your heating system has tripped, it will need to be reset.

2. Thermostat Settings

Sometimes, the problem lies with the thermostat settings. If your thermostat is set too low, it might not trigger the radiator to produce heat. Verify that the settings are appropriate for the desired temperature. Some advanced radiators may have a lock feature that restricts changes to the settings, ensure this has not been accidentally engaged.

3. Internal Fuse

Like many electrical appliances, radiators have an internal fuse designed to protect the appliance from power surges. If your radiator has stopped working completely, the internal fuse may have blown. The process for changing a fuse varies by model, so you will need to refer to the user manual for specific instructions.

4. Heating Elements

One of the main culprits when an electric radiator doesn’t heat up could be a malfunctioning heating element. The heating element is the part of the radiator that heats up, radiating warmth into the room. If the element is damaged or worn out, it might not heat up, even if the rest of the radiator seems to be working fine. You may need a professional to replace the heating element.

5. Blocked or Dirty Radiator

Over time, dust and dirt can build up inside the radiator, reducing its efficiency. This debris can block the radiator fins, preventing them from effectively radiating heat. Regular cleaning and maintenance are vital to keeping your radiator functioning optimally.

6. Faulty Wiring

Faulty wiring inside the radiator can also prevent it from heating up. Wiring problems can be challenging to diagnose and fix, so it’s recommended to hire a professional if you suspect this to be the case.

7. Age and Wear

Electric radiators are typically durable, but like all appliances, they suffer from wear and tear over time. If your radiator is old, its parts may have become inefficient or stopped working altogether. If this is the case, consider whether it would be more cost-effective to replace the unit rather than repair it.

Why is My Electric Radiator Not Heating?


  • Look at your radiator wires and locate the temperature sensor.
  • Locate the electronic card housing and remove it.
  • Follow the path of the sensor wire and disconnect it from the electronic board. In general, the probe wire connector stands out from other electrical wires that are connected by ferrules (metal connection points).
  • Set your multimeter to continuous mode, or if you don’t have this icon, set it to its lowest value in ohmmeter mode.
  • Place one of the two test probes on each of the metal parts of the connector.

If your radiator is not heating up, the temperature sensor may be faulty. It is usually placed under a radiator so that it can measure the flow of air it draws in.


The last component to check is the electronic board. If it is faulty, then it cannot send commands to the radiator to heat it up.

  • After removing the housing, remove the metal support above the electronic board.
  • Perform a visual inspection for burn marks or damaged components.
  • If the card is good, you will have to see a specialist because the problem is likely coming from somewhere else. Otherwise, replace the card.


It’s important to remember that while some issues with your electric radiator can be fixed at home, others require professional attention. Always prioritize safety when dealing with electrical appliances, and when in doubt, reach out to a professional. By understanding these potential problems and solutions, you can make more informed decisions about your heating system and maintain a warm and comfortable environment in your home.