Dryer Keeps Blowing Thermal Fuse – Troubleshoot and Diagnosis
- Check Thermal Fuse On Blower Wheel. The Dryer’s Thermal Cutoff is designed to trip on high heat to protect the dryer and your clothes. ...
- Control Board Relay Is Not Working. ...
- Remove all Lint Around Thermal Fuse. ...
- Dryer Thermal Cutoff Fuse Keeps Tripping. ...
- Clogged Dryer Vent. ...
- Check If Heating Element is Grounded. ...
Why does my dryer thermal fuse keep blowing?
If your thermal fuse is blowing regularly, this is a good sign that something else is wrong with your dryer or you are not taking proper care of it. But before we discuss how to keep your thermal fuse from blowing in the future, let’s start by letting you know how you can check if your thermal fuse is blown and how to replace it if it is.
What does the thermal fuse do on a Maytag dryer?
The purpose of the thermal fuse is to prevent fires from developing by turning your dryer off when it overheats. If your thermal fuse blows, it will need to be replaced. Thankfully, it is not a very expensive component, and if you have some knowledge of appliances, you can install a new one yourself.
Why does my Maytag dryer keep Tripping the thermostat?
Failed Relay on the Control Board Another common reason for Whirlpool and Maytag dryers, that this particular thermal fuse keeps tripping is due to a failed relay on the control board. Usually, this relay becomes stuck in the “ON” position and sends the power to the heating element, ignoring ON/OFF commands from the control board.
Why does my thermal cut off fuse keep tripping?
Here are the most common reasons a thermal cutoff fuse will keep tripping. Dryer Hose or Vent Line Clogged When dryer hoses or vent lines become clogged it prevents proper air circulation, which will eventually cause your dryer to overheat. This is the most common reason a thermal cutoff fuse keeps tripping.
What causes a dryer to keep blowing fuses?
When your dryer's heating unit overheats, it can cause a thermal cutoff fuse to trip. This happens when lint builds up in your dryer's ventilation duct, preventing proper circulation of air. To get your dryer back in working order, check the back of the dryer to remove any clogs or lint buildup.
How do you bypass a thermal fuse on a dryer?
Locate and Bypass the Fuse The thermal fuse will look like a thin strip of white plastic with a wire coming out of each end. In order to bypass the thermal fuse, use electrical tape to tape the two ends together. The thermal fuse will then be bypassed. Turn the dryer on to a heat cycle for no more than 90 seconds.
Why does my dryer thermal cutoff keep blowing?
The number one cause of dryer overheating is poor venting, and while it may be caused by a defective blower motor, it's more often the result of a clogged lint filter or lint-clogged vents. You're especially likely to have clogged vents if your pipes are made with corrugated metal or worse, plastic.
How long do thermal fuses last?
The highest temperature of the thermal fuse at which it does not open the circuit while passing rated current for 168 hours. (Applicable to UL, cUL and CCC). The highest temperature of the thermal fuse at which continuity does not occur for 10 minutes after the function of the thermal fuse.
Will dryer run if thermal fuse is blown?
Will the dryer run if the thermal fuse is blown? Unlike a thermostat that can reset itself, once a dryer thermal fuse blows, it will need to be replaced with a new one before the dryer will run.
How do I bypass the start switch on a Maytag dryer?
0:123:49Whirlpool dryer push to start switch - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou need a jumper wire like this to make one get a piece of wire strip. The two ends. Apply solderMoreYou need a jumper wire like this to make one get a piece of wire strip. The two ends. Apply solder to the ends I'm flattening the ends with a hammer.
How do you test a dryer thermal cut off?
0:065:31See how to check & replace a thermal cutoff WP dryer - YouTubeYouTubeStart of suggested clipEnd of suggested clipSet your multimeter on the lower scale to read ohms. Take a reading between this two terminals. TheMoreSet your multimeter on the lower scale to read ohms. Take a reading between this two terminals. The reading should be close to zero ohms.
What does a thermal cutoff do?
The term “Thermal Cutoff Switch” generally refers to how the switch is used, ie. It cuts off the current to critical machinery when a temperature limit is exceeded preventing potential burn out or failure.
How many thermal fuses does a dryer have?
Electric dryers use two household fuses or circuit breakers. The drum can still turn if just one fuse is blown, but there will be no heat. You may need to replace both fuses or reset both circuit breakers. If the dryer's thermal fuse has blown due to a power surge or other mechanical problem, the dryer won't heat.
How much does it cost to replace a dryer thermal fuse?
Other Costs to Fix a DryerPartMaterial CostTotal CostThermal fuse$5 - $10$80 - $130Dryer thermostat$3 - $20$180Bearing$50$130 - $250Roller$10 - $30$90 - $2301 more row
Can you reset a dryer thermal fuse?
2:524:55Reset Dryer Thermal Fuse / Switch (Dryer won't heat fix) - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo if you have this issue and you keep spot or you trip this you may want to try drilling this. AndMoreSo if you have this issue and you keep spot or you trip this you may want to try drilling this. And then you got a little bit of pressure. And it resets. It. So if you're testing your dryer.
Where is the dryer thermal fuse located?
1:163:12Dryer Repair- Replacing the Thermal Fuse (Whirlpool Part# 3392519)YouTubeStart of suggested clipEnd of suggested clipLocation of the thermal fuse is right on the blower housing.MoreLocation of the thermal fuse is right on the blower housing.
Why does my dryer blow a thermal fuse?
Do not let it continue to run and heat past this temperature. If the dryer is cycling properly with the vent hose disconnected, then the likely cause of your thermal fuse blowing is the vent duct system to the outside of the home.
How to measure the temperature of the air coming out of the dryer vent?
Position the dryer so that you can measure the temperature of the exhaust air from the middle of the vent in the back of the dryer with an accurate thermometer. Start the dryer on a timed cycle with high heat. Measure the temperature of the air coming out of the middle of the exhaust vent behind the dryer. The dryer should heat up ...
How to replace thermal fuse?
Before replacing the thermal fuse again, try these steps: Unplug the dryer to disconnect electrical power. Temporarily tape the two wires that go to the thermal fuse together to essentially "bypass" or "jump" the thermal fuse. Use electrical tape to properly insulate the connection and avoid contact of bare wire contacts with the dryer cabinet.
How hot should a dryer be?
Measure the temperature of the air coming out of the middle of the exhaust vent behind the dryer. The dryer should heat up to about 150 degrees. The heating element should then shut off until the temperature decreases 15 to 20 degrees. The element should then cycle back on.
Does the thermal fuse on a Maytag dryer go out?
The thermal fuse on my Inglis Maytag dryer keeps blowing. With the fuse out, the element still gets heated, but the dryer doesn’t spin. I replaced the fuse and the dryer worked for a good 30 mins and then it stopped.
Can you check the exhaust vent ducts to the outside of the home?
Check the exhaust vent duct system to the outside of the home for restrictions. You may need to have a service clean the duct system. If you did not find any obvious problems in the exhaust vent system to the outside of the home, then I recommend conducting the following test:
Maytag Dryer Blowing Thermal Fuses
On a PYET344AYW electric dryer about 4 yrs old, I replaced the high limit thermostat and thermal fuse one month ago. At that time, I found that the outlet in front of the blower wheel was about 1/2 clogged with lint. It was ok until yesterday when dryer again stopped mid-cycle.
Comments (3)
If the thermal fuses keeps blowing, there must be a heat /vent / air-flow problem.
Check Thermal Fuse On Blower Wheel
The Dryer’s Thermal Cutoff is designed to trip on high heat to protect the dryer and your clothes. The thermal fuse can be checked by using a multimeter set on ohms (Ω). Measure the continuity of the thermal fuse between the two terminals. If no continuity exists, then replace the thermal fuse. Check all wires for looseness at ends and terminals.
Control Board Relay Is Not Working
In many modern dryers, the thermal fuse is a safety device that cuts power to the heating element if it detects high heat. In some cases, however, a thermal fuse can be tripped by a bad relay. In this case, the relay may be stuck in “ON” position and fail to receive commands from the thermostat.
Remove all Lint Around Thermal Fuse
As lint is collected, it can easily bypass the lint trap and end up in areas such as the dryer vent. While this can be quite common, our products are designed to protect against such mishaps — particularly through use of thermal fuses and other safety measures.
Dryer Thermal Cutoff Fuse Keeps Tripping
The thermal cutoff is located at the base of the dryer and it works to cut off the flow of energy should that dryer overheats. It also serves to monitor the temperature of the dryer so you can ensure it’s heating up at an appropriate rate.
Clogged Dryer Vent
When your dryer’s heating unit overheats, it can cause a thermal cutoff fuse to trip. This happens when lint builds up in your dryer’s ventilation duct, preventing proper circulation of air. To get your dryer back in working order, check the back of the dryer to remove any clogs or lint buildup.
Check If Heating Element is Grounded
If the coils in your dryer’s heating element touch the casing, it can cause the heating element to become grounded. Grounded coils can keep your dryer’s heat engaged even during air-only or fluff cycles, causing the machine to work harder than is necessary and damaging your clothing over time.
Why Does My Dryer Fuse Keep Blowing The Same Fuse?
Chances are if you have a dryer that keeps flowing the same fuse then you have a fuse panel in your home or a fused disconnect next to the dryer for servicing.
Why Does My Dryer Fuse Keep Blowing Different Fuses?
If different fuses keep blowing for the dryer this is a sign that could be the dryer itself.
Can I Install A Larger Fuse To Stop It?
The largest P type fuse that you will find on the market to screw in for your dryer is a 30 amp one time or 30 amp time delay.
Why Does The Thermal Cut Off Keep Blowing?
The thermal fuse inside your dryer can keep tripping or blowing for two reasons.
Is It Safe To Run A Dryer Without The Thermal Fuse?
If you’re handy enough to know how to disconnect or thermal overload inside of the dryer then you should know better that it is not OK to run the dryer without this thermal overload.
Why do dryers burn out?
Thermal fuses burn out to prevent fires. All dryers have a high limit safety thermostat that cuts power to the element at a lower temperature than the thermal fuse burnout temperature. In addition, the dryer may have a thermometer and temperature control or a simple thermostat. So there are three temperature sensors in most dryers, ...
What causes a thermal fuse to burn out?
The leading cause of thermal fuse burnout is obstructed airflow. Check the exhaust path for excessive lint or debris all the way to the exit point of the exhaust pipe. Check the blower wheel to make sure it isn't broken or clogged up. This can be done by using "cool down" or "air fluff" mode.