Samsung Dryer Not Heating - Not Drying

Question

Samsung Dryer

Repair information for Samsung clothes dryers.

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Samsung Dryer Not Heating - Not Drying

Our Samsung dryer (Model DV48H7400EW/A2) wouldn't spin the drum after powering it up. On checking, I found that one rear roller had lost its center bearing and the other was not rolling true. The idler pulley had come apart allowing the belt to come off. Of course, the drum wouldn't spin.

I bought the kit from Amazon that included the idler pulley assembly, 4 drum rollers and a belt. Before installing the new parts I did a thorough cleaning even taking the fan disk out and washing it and cleaning all the dust, lint, detritus from inside the case.

I had to remove the rear bulkhead to gain access to the rear roller retaining nuts which meant that I had to take the screw out of the heater assembly bracket (at front) and slide the assembly forward to allow the bulkhead to move forward. I did not disconnect any wires to the heater assembly.

To remove the rear bulkhead I completely removed the top which meant disconnecting the cables to the PCB. I took photos before and made sure all connections were made correctly on reassembly.

On reassembly, the dryer powered on without any errors. The drum rotated and I thought the heater was working but could not be certain. My bride tried to dry a load of clothes. There was no heat. The fact that the unit powered up, turned the drum and seemed to be working correctly leads me to think that those PCB reconnections are OK

Before I order a heater assembly, I thought I should ask what diagnostics I should run to isolate the problem to be sure it is the heater that is broken. I know my way around a multimeter. I have an infrared remote thermometer.

Any help will be greatly appreciated.

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score 2 · Answer 1 · 2025-11-05T19:43:32-07:00

First thing to check is the incoming power. Your dryer runs on 240 volts, which is made up of two 120 volt legs. If one leg goes out, the dryer will still be getting the 120 volts it needs to run everything except the heating element, which runs on 240. So check your breakers, and verify you have 120V between both legs of the plug and ground, and that you get 240V between the two legs. Obviously checking the circuit breaker first might save you some time; if one leg has tripped, resetting it may get you going again.

If that doesn't turn out the be the problem, the next most likely issues are the high limit cutout, the thermal fuse, or the heating element. All three of those can be checked for continuity; if you find an open circuit in any of those three parts you've found the problem.

There are lots of videos showing how to replace the heating element on your dryer, but this is the only one where they actually go to the trouble of testing the parts before just replacing them all.

Troubleshooting And Fixing A Samsung Dryer That Is Not Heating! - YouTube

So check this stuff out then come on back and let us know what you found; your experience may very well help the next guy who comes along with a dryer that won't heat.