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How To Fix A Cadet Heater That’s Not Working

How To Fix A Cadet Heater That's Not Working

You might use your Cadet heater to stay warm when winter arrives. The best thing you can do if something unforeseen occurs with the heater fan is to discover a remedy as soon as you can. We conducted some study to help you comprehend the potential causes of your Cadet heater fan failure. Here is what we discovered.

One of the following factors could be to blame for your Cadet heater fan failing:

  • The heating fan’s other components are completely inoperative.
  • The heater fan either fails to warm up or blasts cold air.
  • The motor or heating fan blades either rotate slowly or not at all.
  • The limit switch built into the heating fan frequently trips.
  • The heater’s fan never shuts off.

There are various techniques to troubleshoot your heater depending on the problem.

Your cadet heater fan could be broken due to a number of circumstances. Discover these elements and how to resolve the typical problems by reading on.

Common Cadet Heater Fan Problems & Solutions

Despite having a simple design, cadet heater fans can experience a variety of problems. Look at each of them more closely below.

The Heater Fan’s Parts Don’t Work At All

How To Fix A Cadet Heater That's Not Working

If the heater does not come on, the temperature may have risen to abnormal levels. Additional factors include:

  • The supply connections are sloppy.
  • The heater cannot operate because of a shortage of electricity.
  • The thermostat is broken or not set up properly.
  • The heater has an obstruction.
  • The switch for the high-temperature reset tripped.
  • Reset switch for secondary high temperature tripped.

What’s Next?

Turn off the power at the main disconnect panel if you see any loose supply connections. Verify that all of the heater’s wire connectors are secure, and that any connection terminals are located in junction boxes or on the wall thermostat.

Any nicks or breaks in the outer insulation of the wires that could result in a short circuit should be avoided. To hide small cuts, wrap electrical tape around the wires. Your Cadet heater fan needs to be replaced if the wires have corroded. To solve the issue, take these actions:

  • If the heater functions at the proper voltage, connect the plug properly (120-volt supply to 120-volt heater).
  • Insufficient temperature will prevent your heater from turning on. Verify that the thermostat is operational and that it has been set up properly. Try changing your program’s options if this doesn’t work.

Turn off the electricity at the circuit breaker if the problem persists. Alternate between the terminals on the thermostat. Check that the main breakers are turned on. If the heater functions, a malfunctioning thermostat that needs to be replaced is probably the cause. Remove the jumper before turning on the heater.

Cleaning your heater will help to solve combustion or overheating issues. With a small nozzle on a shop vacuum, remove any dust or debris from the area surrounding the fan and its components. If a heater’s heating coils are dirty, they could overheat and break down too soon.

Check the coils within the heater to make sure they are clean. The loops need to be error-free. If debris is left on the coils, smoke and possibly fire will result. After cleaning the fan, carry out the following procedures:

  • Firmly press the reset heater button. After allowing the heater grill to cool for a while, you can access the reset button through the lower-right center area of the grill.
  • Replace the heater if the circuit is intact and the high-temperature safety shut-off trips more than once each day or doesn’t reset.

Heater Fan Does Not Warm Up Or Blows Cold Air

How To Fix A Cadet Heater That's Not Working

Here are some potential causes of your heater fan blowing out cold or lukewarm air:

  • The thermostat is set lower than the actual temperature, yet the fan is still running.
  • When the fan is switched off, warm air is released.
  • Faulty heater elements or insufficiently heated elements.
  • A wire nut or poor wire connection.
  • The manual reset button is malfunctioning.

What’s Next?

  • If you haven’t modified your settings in a while, check to be sure they are correct. Increase the thermostat setting and flip the fan switch to Auto.
  • The cadet heater fan delay gets rid of chilly drafts when it starts up and gets rid of leftover heat when it shuts down. Give the element some time to attain the working temperature. If the issue continues, use an ohmmeter to check the heater elements and replace them as necessary.
  • Even when the heater fan is operating, there most likely is loose wire somewhere in the system. Verify any loose electrical connections and tighten them.
  • Before hitting the reset button, let the heater cool. Resetting the manual limit control might not work if there has been a significant over-temperature condition.

Slow Or No Motor Or Fan Blade Rotation

If the heater fan elements are heating but the fan blades are not spinning, one of the following possibilities may be the cause:

  • A time delay switch that is broken
  • Incorrect wiring connection
  • A defective motor
  • The heater requires 240 volts, compared to 120 volts for the circuit breaker.
  • The motor or fan is jammed.

What’s Next?

  • Switch the delay time. Limit switches could result in malfunctioning heaters, an inability to turn the heater’s blades, or continuous operation without warm air discharge. If the heater’s circuit has been opened by excessive operating temperatures, a manual reset limit control will shut it down.
  • Verify the wire connection once more.
  • Your heat fan motor will eventually stop working. Overheating and too much moisture cause the heater fan motor to fail. When dust, grime, and debris build up, the windings and bearings are more susceptible to burning out. If the heater or motor continue to operate slowly, fix them or replace them.
  • Verify that the heater is operational and that the power supply is appropriate. A 120-volt heater should be used in its stead.
  • Get rid of the restrictions and hit the heater reset button (after allowing the unit to cool). If it won’t run, fix it or replace it.

Integrated Limit Switch For The Heater Trips Frequently

Two of the most frequent heater issues are insufficient heat or poor airflow. If your Cadet heater fan hasn’t been used for a long, dust and dirt may have accumulated within. If you don’t solve this issue, the limit switch might get harmed.

Other typical reasons include:

  • Power blackouts
  • Overheating

What’s Next?

  • The heater’s power must always be constant.
  • Assess the activity of the fan motor and blades. If necessary, wash, lubricate, or replace them.

Heater Fan Does Not Turn Off Or Cycles On/Off

How To Fix A Cadet Heater That's Not Working

You should alter the settings on your thermostat if your wall heater turns on and off every 15 seconds. Additional root causes of this issue include:

  • Your current wattage may be excessive for the size of your room.
  • The heater thermostat has a wiring problem.

What’s Next?

Close all doors and windows in addition to adding more heating or insulation.
For proper wiring, consult the thermostat’s documentation.

How Safe Are Cadet Heaters?

Although Cadet heaters are completely safe for your family and pets, you should still exercise caution when using your heater. 3 feet should be left in front of the heater, along with 12 inches on either side and above.

A Cadet Heater’s Maximum Temperature?

A room may be heated by a Cadet heater from 40 to 85 degrees Fahrenheit. In a room with high ceilings or without other sources of heat, a ceiling fan or heater with a higher wattage is a smart idea.

What Is The Lifespan Of A Cadet Heater?

The normal lifespan of a Cadet wall heater is 8 to 12 years. That is an average lifespan, however depending on how well you care for your heater, it may differ.

Cleaning and taking proper care of your wall heater on a regular basis can help it last as long as feasible.

Make sure the heater you choose comes with an extended warranty, and inquire with the dealer about how to make the most of it.

Do Cadet Heaters Use Less Energy?

Because it heats a space more quickly, a Cadet wall heater might help you save on energy. Depending on the type of heater and the temperature you want in your house, Cadet wall heaters can save your energy costs by up to 30%.


You can be better ready now that you understand why and what to do if your Cadet heater fan breaks out. I hope you never find yourself in that circumstance.

Consider getting in touch with a technician if your Cadet heater fan is still giving you trouble.

How To Fix A Cadet Heater That's Not Working

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