The dryer starts and works for about five minutes and then stops and starts beeping.

The Frigidaire AEQ8000FE electric dryer is displaying the 50 and start/stop lights blinking randomly with periodic beeping. Pressing the control panel clears the issue, but it returns after a few minutes. Despite this issue, the dryer is working properly.

Washer dryer displays error message E30, C3 or emits 3 beeps

https://www.electrolux.co.uk > support-articles > laundry
Sept 18, 2019 - Washer dryer displays error message E30, C3 or emits 3 beeps. The error is caused by water at the bottom or inside the machine.
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Electrolux/Frigidaire combo beeps 3 times randomly ...

https://www.ifixit.com > Answers > View > Electrolux-F...
Oct 9, 2020 - Just curious if anyone would know why my Frigidaire stackable Washer/Dryer model FFLE3911Qw0 Beeps 3 times randomly and it does it all the ...

2 answers · 2 votes: Hi, Does this occur when the washer is in use? Don't know the answer but according to the ...
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Have you checked the lint has been cleaned off filter and water reservoir emptied.?

take it back and try a different brand.

MAY BE BAD MOTOR WITH BAD WINDINGS USUALLY STOPS AFTER 20 MINUTES OF USE? OR HEATING ELEMENT IS OVERHEATING? DUE TO BAD VENTING? THERMAL CUT OFF KEEPS SHUTTING IT DOWN?

Two Beeps on my Bosch WTE84100au Condensing Dryer means a thermal overload but also means one of the thermal sensors is faulty .... as if it is always on.
Open the door, pull out the lint catcher and clean around the silver probe (it's like a shiny 1/8" nail sticking into the cavity below the lint catcher). If it still doesn't work (and still 2 beeps), just flick it lightly a couple of times. If it still doesn't work, flick again from the other direction.

this is a signal from some codes, read your owner manual and see what is the indication with the beeps.Normally after your clean the filter and exhaust vent, and continuos beeping the control board is faulty, replace it.
God bless you

Raise the control panel and replace the electronic board ( 5" x 7" ) .Came across this same problem tuesday .

does the drum turn? if it doesnt you can assist it and see it that is problem, have to remove top and push it. that would be capacitor on motor or jumper the door closed switch and try to spin.

Dd you try to unscrew the larger lint trap underneath the lint cup collector. My serivce person showed me how to do this and after a year I cleaned it out and was surprised how much lint was caught in there. My dryer was not heating and drying quickly, this helped the problem.