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I have a Samsung clothes dryer that stopped heating up. Here's what I've tried so far:

  • verified that the 30 amp breaker is working fine
  • verified 120/240v at the relay
  • verified 9ohms across the heating element
  • verified that the element wasn't shorting against its housing
  • verified 0.1 ohm at the high limit cutoff and the thermostat
  • verified the thermistor on the control panel is functioning correctly
  • gave lint trap, exhaust, etc a good cleaning

About the only obvious thing I haven't tried is probing the outlet itself for 240v. I'm unable to check it with my multimeter because the probes can't reach inside the outlet. That said, sine the relay read 120/240 as expected, I think it's getting good power.

Final weird thing is that after I put the dyer back together and it didn't work, I flipped the breaker off and on and tried the dryer again. It heated up! Power cycled the dryer and tried again, no heat. Toggled the breaker... Heat! Power cycled and got no heat. Figured I was on to something, but no amount of fiddling with the breaker or power cycling will make it heat up again. Really not sure if that's a red herring, but including it for completeness.

So - any suggestions as to what the problem might be? I guess I feel like I've tried the obvious things, and now need some less obvious possibilities.

Thanks

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    Sounds like the relay may be sticking... or there's some other flavor of intermittent connection. – keshlam Dec 17 '14 at 4:02
  • You are aware that you have 2 limit switches on a dryer right, one on top and one on bottom, double trouble :) what you need to buy is an amp meter, where isn't voltage flowing brother man – user70085 Oct 20 '18 at 3:57
  • I had one go bad from a similar issue, I took it off and threw it on the pavement (flat part down) got it unstuck and worked again for a few for months :) – user70085 Oct 20 '18 at 5:50
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probably a bad circuit breaker, recommend replacing it. You can check if it is bad by checking the voltage on it using an ohm meter. Set the ohm meter to 200v ac, touch one probe to the screw where the wire is attached and the other probe to the silver grounding bar with all the bare copper wires attached. It should read approx 120v. Check both wires this way. Start the dryer, if it doesn't have heat again... recheck the voltage on the breaker again. I'm betting that one of the screws shows 0 voltage... my guess is that one leg of your breaker is bad or faulty.

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    Given that there is 240v present inside the dryer, it's unlikely to be a supply issue. – Someone Somewhere Jan 22 '18 at 4:49

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