How to test a tumble dryer that is not heating and change a thermostat that is faulty
This video is on a compact Zanussi but the testing and repair is very similar on most makes.
Your tumble dryer is not heating? Could Be One Of The Following:
If you have a Tumble Dryer that is not heating up but the drum is turning ok, then the chances are the thermal overload cut-out has tripped or the heater might have blown. Some older dryers have a red reset button on the back of the casing, just press the reset until you feel it click and you should have heat again white knight, creda and some other makes have this. Neff, Bosch dryers have a reset button but you will have to remove the heater cover panel to access it, you will find it just above the heating element (a black stat with small red button) simply press the red button and if it clicks you've fixed it or you can test it as in the video.
Why do Tumble Dryer Thermostats Fail?
In most cases it´s a fault generated by use or failure to use and maintain the tumble dryer correctly. A little care could prevent the hassle and cost on these repairs:
1 - The Tumble Dryer Filters must be cleaned!
If the air doesn't flow, the machine can overheat and the safety will trip. Any obstruction to the rate of airflow will affect the operation of the dryer and almost certainly cause a failure of the thermostat or, the safety thermostat to trip. If you don't clean the fluff or lint filters, don't fit them back properly or use the tumble dryer with damaged or broken filters it will affect the efficiency of your tumble dryer and as the temperature is no not kept down by cooler air being drawn into the tumble dryer. This increase in temperature can and does, rise high enough to trip out safety thermostats. Any obstruction to the rate of airflow will affect the operation of the dryer and almost certainly cause a failure of the thermostat or, the safety thermostat to trip.
2 - Tumble Dryer Vent Hose!
A blocked vent hose, with fluff or bended in the back of the machine stops the air flow from the machine, tripping the thermostats.
3 - Overloading your Tumble Dryer!
Putting too much clothes in your tumble dyer will affect the airflow, and almost certainly cause a failure of the thermostat or, the safety thermostat to trip.
4 – Always keep Tumble Dryer Condenser Unit Clean!
The aluminum plates at the bottom of condenser tumble dryers, to prevent any blockages caused by the fluff build-up.
5 - Opening The Door During The Drying Cycle!
The dryer has been switched off before the end of the drying cycle and not allowed the dryer to cool down correctly. ALWAYS LET THE DRYER GO THROUGH THE COOLING CYCLE.
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i have white knight tumble dryer the belt broke would this trip the thermostat to heater cus the dryer isint heating up now
sometimes there is a reset on the back for the heater
Hi
We have a white Knight Tumble dryer of which the back and top panels keep getting extremely hot! I have checked both thermostats and they both have continuity, and i have checked the element and this dosnt have continuity on any of the two rings/circuits?
Any suggestions?
Trevor
I have a white knight dryer that’s not heating up
I have tested elements thermostats and cut out for continuity and all good
What else could it be
have you tested the one at the front of the machine?
Have a beko condensor dryer not heating chested Al filters pressed red button still not working
check the heater and also the stats
My beko 7kg doesn’t seem to have a reset button, and its not heating up
hi I have a White knight sensordry dual heat tumble dryer it spins heats up and drys fine but the timer has stopped working so it never cuts off automatically, any suggestions to a cure? Thanks
this sounds like a faulty timer i will need the make and model please
I have an Beko condenser dryer not heating up can y tell me where the reset button is please
there is not normally a reset button check the heater and the thermostats
Chat started
louise carter
Hi im needing a little advice please.
I have a beko condensor dryer, all works fine apart from not heating up.
We replaced the thermastat part at the bavk and it now glows red as soon as you switch drter on vut then as ut stops to spin the opersit way it stops so no heat is coming out
X
the heat cycle is on only on one direction on some models as the fan only blows air in that direction
Hi I have an indesit condenser dryer, it will heat up and spin but it seems to stop after about five mins and all of the lights on the front start flashing. Cleaned filter and cleaned condenser unit. Any thoughts? Thanks for your help ?
check the pump unit as in videos
Were would the thermostat be situated on my creda dryer?
two on the heater one in the front
Hey there
I have a white knight c427wv and im having to press the reset button almost after every load or so otherwise it runs cold. Any idea what might be the problem?
The dust filter is clean and the outlet pipe is ok and not blocked.
check the fan blades and clean out all the ducts
I’ve got a Zanussi ZDC3700w condenser dryer that isn’t even getting warm let alone hot! Tank and filters checked and all ok.
check the heater plus the stats
hi I have a BEKO condensor DSC64W I have replaced the heater (thermostats come with) and still no heat any suggestions?
check front thermostat
A quick question for you, I have a Zanussi Washer Dryer where the dryer cycle no longer generates any heat.
I went through the diagnostics and found an error code E72…a search suggested this could mean a faulty NTC sensor.
I followed some online tutorials using a multimeter and when checking resistance, i was looking for between 5.7 and 6.3 at 20 degrees C but it wars returning a value of 7.00 at a temperature of 19 degrees C. Would I be right in saying that this number being outside the specified range would mean fault with then NTC.
I have also reset the error codes and re run a short drying cycle and the dryer cycle again generated no heat but annoyingly the dryer gave no error code this time. Little confused as was assuming I should just buy a new NTC and refit to cure the issue.
Any comments would be really welcomed.
Thanks in advance
check water valve for dryer fan and heater
Thank you very much for the article i have found it very handy and most of all saved me few pounds as the wife called a plumber on sunday because of the dryer not blowing hot air! Reset the thermostat and cleaned the external pipe noe is working fine.
Thank you again
glad we could help you
Where is the reset button on an indesit IDC85 dryer ? Many thanks
there is no reset button only cut out stats https://how-to-repair.com/help/search-page/?searchsubmit=go&incDesc=on&searchVal=IDC85+thermostat
Hi. We have a White Knight vented dryer that’s overheating and a orioles wuth spinning.. We’ve tried the red button, checked for blockages, cleared the filter. The dryer gives a buzzing noise for about 3 minutes then eventually spins and spins in reverse and completes it’s cycle. But.. if I put it on high heat it smells of burning and won’t spin at all.
Hope you can help.
* a problem with spinning
Predictive text hey ha
My Hoover VHV 781NC tumble dryer has error “E15” is that the TOC? Does it have a reset button? Is there anything else I could check first before £120 call out fee from Hoover! Thanks in advance.
see videos on how to check the element and thermostats
Hi, we have a bush vented dryer that has stopped heating. It still spins but the clothes come out just as damp as when we put them in. I can’t find a reset button, can you help? We were quoted £109 for argos to send an engineer out to fix it (bought from them and just out of warranty by 2 months) but only paid £159 for the dryer to start with!
check the heater and the thermostats it will be one of these at fault