Question about KitchenAid KEYS750LQ Electric Dryer

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Kitchenaid Keys750Lt Thermal fuse above and to the left of the heating coils keeps blowing out within three four days of use. It has continuety when new, but after it blows out the circuit is open and the coils will not heat any more. The only change is a new addition on our house which extended the exhaust pipe, from just outside the washer-dryer room, to up the wall and through the roof, to12 feet from the 12 inches that it use to be. Could this be causing the fuse to short out becaus of excessive heat? Would it be possible to up-grade the fuse to withstand the extra heat?; or is there an inherent problem that stems before the fuse that blows? Regards, Frank

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You need a chimney sweep to sweep dryer vent.their is blockage some where and if dryer can not vent properly it will continue to blow fuse.

Posted on Mar 08, 2009

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You will have to remove the back panel to access this part. Be sure that you unplug the machine before starting. Once the back panel has been taken off and placed aside the thermal switch will be located on the left lower side near the blower housing . It will be thin and long and located near the cycling thermostat that has for prongs on it. On certain machines, the thermal fuse is located in the front. To access this you must remove the kickplate, which can be done by pushing the clips, one on each side jsut above the top of the kickplate, in between the top and abottom portion. The part numbers are the same for either style dryer. To test this part you can either take the wires off it and tie them together then plug the machine back in and see if it heats, or you can use amultimeter and check to see if there is continuity, if there is its good, if not, bad. The thermal fuse will usually be white, and if located in the back, be thin and long with two wires on it, left and right. If in the bottom front, it will be front center on the exhaust duct. In some cases the ignitor or the gas coils will go bad. Here is a good process of elimination.
1)Verify that the thermal fuse is good. If you don't have a meter bypass it and turn the machine on. If heats, thermal fuse is bad, if not leave connected and continue
2)When the dryer starts and thermal fuse bypassed, the ignitor should start to get hot and glow, if your thermal fuse is in the back you are going to have to have to the top of the dryer up to see down inside near the front for the glow. You can do this by taking the lint trap out and removing the two screws and popping the top up. If the ignitor comes on more than likely the gas coils are bad and if it doesn't the ignitior is bad. (this is while the thermal fuse is bypassed so the ignitor has power to it regardless)

Feb 22, 2012 | KitchenAid Dryers

1 Answer

Kitchenaid gas dryer model # kgys750jq does not heat up


You will have to remove the back panel to access this part. Be sure that you unplug the machine before starting. Once the back panel has been taken off and placed aside the thermal switch will be located on the left lower side near the blower housing . It will be thin and long and located near the cycling thermostat that has for prongs on it. On certain machines, the thermal fuse is located in the front. To access this you must remove the kickplate, which can be done by pushing the clips, one on each side jsut above the top of the kickplate, in between the top and abottom portion. The part numbers are the same for either style dryer. To test this part you can either take the wires off it and tie them together then plug the machine back in and see if it heats, or you can use amultimeter and check to see if there is continuity, if there is its good, if not, bad. The thermal fuse will usually be white, and if located in the back, be thin and long with two wires on it, left and right. If in the bottom front, it will be front center on the exhaust duct. In some cases the ignitor or the gas coils will go bad. Here is a good process of elimination.
1)Verify that the thermal fuse is good. If you don't have a meter bypass it and turn the machine on. If heats, thermal fuse is bad, if not leave connected and continue
2)When the dryer starts and thermal fuse bypassed, the ignitor should start to get hot and glow, if your thermal fuse is in the back you are going to have to have to the top of the dryer up to see down inside near the front for the glow. You can do this by taking the lint trap out and removing the two screws and popping the top up. If the ignitor comes on more than likely the gas coils are bad and if it doesn't the ignitior is bad. (this is while the thermal fuse is bypassed so the ignitor has power to it regardless)

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1 Answer

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Have you cleaned the blower vent pipes lately. Sounds like the vents may be stopped up with lint and it got too hot. Clean vents and where the fan blade is to be sure the fan can turn. I have found everything you can think of in the blower housing that would keep the fan from turning.Be sure and get the lint out they all have some. As far as the heat not working check all thermastats , the thermal fuse on blower box and thermal cutoff usely on the heater box. and the heater coil also check with an ohmeter from heater coil connections to the metal box it's in ,the coil could be grounded inside the box.
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Hi,

Hi,

Thermal Fuse is located inside the dryer, If the thermal fuse gets too hot, it will blow, and completely shut down your dryer until it is replaced. This fuse is often mounted within the exhaust duct in the back panel. It’s about an inch long, and is usually found within a white plastic housing. When fuses blow, it means they have no continuity and no power will flow through it. A bad thermal fuse needs to be replaced. When replacing this fuse, check the dryer vents to make sure there is no lint buildup which can cause the heat to stay trapped and blow the fuse again.

Good luck and have a nice day
Rating the solution is highly appreciated.

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The little white part with one hole is the thermal fuse, similar to the cutoff but service a different purpose.

The cut off will blow if there is lack of air flow, typically a plugged vent or lint screen.

The thermal fuse will blow if the exhaust temperature is too high. The reason the temperature is too hot can be one of two things.

#1 and most likely is the component right next to the thermal fuse, it is the operating thermostat.

#2 A shorted heat element that is on all the time, this can be checked by turning the timer knob to 30 minutes on the timed dry cycle, close the door but do not start the dryer. Open the door after about 2 minutes and see if the drum is hot. If it is not the element is okay.

I hope this helps

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