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Re: Roper Dryer model # RED4405Q shutting off
The motor may be getting hot due to bad rolers idler or glide. You need to take the machine apart and oil it. While you have it broken down you may want to turn the motor and see if it is stiff. The motor can be oiled but it is tricky. there are no oil ports you must make some. I use zoomspout oiler from ace hardware. Its high temp resistant formula and viscosity is perfect for dryers and HVAC needs. I have various essays on accessing these machines and diagnosis HERE
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Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.
A timed drying cycle uses the timer alone to stop the drying cycle. Once it times out like an egg timer a set of contacts open up shutting off the dryer. Or a set of contacts closes to activate a relay which in turn shuts off the power.
Auto dry usually uses a moisture sensor which would do the same thing as the timer. Once it doesnt sense moisture in the load for a predetermined time it in turn triggers a relay which shuts the power off. Some auto dry cycles just use the timer alone and guess-timate the drying time by the selection.
If yours does not use a moisture sensor then most likely it is your timer/cycle switch. There may or may not be a relay involved.
Most dryers have a basic wiring diagram on the inside somewhere on one of the panels which will help.
Since yours is acting up on both cycles Im guessing you have a bad relay or connection to that relay somewhere IF it uses a moisture sensor.
if it works on auto but not on time you have a bad timer,it's not counting down,it's better to use auto anyway,when the clothes dry the dryer shuts off on it's own,this way your not using extra electricity,if your clothes dry in 30 minutes and it's on 60 minutes it will still run after the clothes are dry on auto it doesn't.if you open the door and look around the opening you'll see a tag with the model number,your missing a couple of letters on the model number.
Remove all duct work connected to this dryer. Clean thoroughly. You will find amass of lint inside of it causing your problem. If not the moister sensor is not working properly and needs to be replaced.
I do hope you will find a clogged vent tube for it is easier to clean the tube than to replace the sensor. The sensor is a fail safe part. It keeps the dryer from catching on fire when the lint tube is clogged up
During the auto-drying cycle, the moisture sensor could be the problem.
If it also shuts off prematurely during the timed cycle, the operating thermostat could be turning the heaters off before the machine reaches operating temperature. Another possibility is that the operating thermostat does not turn off the heaters at all. When the machine heats up, it gets too hot and the high limit thermostat turns the dryer off.
replace your t-fuse again but also chekc to see if the vent going outside is restricted. if hte vent is smashed or clogged the heat has nowhere to go. i would say that is your issue. clean your vent before you change he t-fuse.
If you use a lot of dryer sheets, it will build up an oily residue on the sensor strips causing a "false" reading. Light sandpaper and alchohol over the strips should clean them well. Another possibility, is if you have a mixed load, ie..towels, socks, jeans , if a sock or something light keeps hitting the strips, the dryer thinks the whole load is dry (it doesn't know there are different thing in there) Try keeping loads similar when using auto dry.