Why does my dryer keep blowing new thermal fuses?
Replacing a dryer heating assembly or thermal fuse often fails to solve the issue when the new fuse burns out again after just a couple of loads. This leaves owners with a dryer that tumbles without heat and no clear direction on what underlying component to check next.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Replacing the entire heating assembly
- 2Replacing individual thermal fuses
- 3Checking continuity and resistance of internal components
- 4Inspecting exterior vents and exhaust tubes for blockages
- 5Running a no-heat selection test to check for stuck relays or grounded elements
- 6Replacing the thermal fuse with a new OEM part
- 7Testing continuity with a multimeter
- 8Inspecting the heating element housing and internal wiring
- 9Replacing the fuse repeatedly
- 10Cleaning out the vent and interior lint
- 11Replacing the high limit thermostat
- 12Switching from a flex hose to a rigid vent
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“Got a multimeter and discovered thermal fuse has gone out again, but wondering why, vent is clear not clogged, thermal fuse was replaced with an OEM part, I can not confirm but would assume the tech who fixed it also replaced the high limit thermostat”source ↗
“dryer stopped heating but would tumble, then the heat started working again. A few weeks ago heat went out and hasn’t come back since”source ↗
“I have a whirlpool dryer that keeps blowing its thermal fuse. I replaced the fuse, replaced the vent and really made sure it was cleaned out. I also cleaned out the interior of the dryer while I had it open to make sure there was as little lint inside as possible. But the fuse has now blown out a total of 3 times.”source ↗
“Hello everyone! I have a Samsung DV45H7000EW/A2 dryer and I am having trouble with the thermal fuse on the heater assembly and am not sure what the underlying cause could be. The dryer was working fine for years but quit drying about a month ago and at that time I just replaced the entire heating assembly.”source ↗
“This new assembly worked fine for a couple loads and then quit drying. I found that fuse on both the old assembly and the new one read open when testing resistance.”source ↗
“I'm kinda at a loss for what else I should check. I'm sure there's something I'm missing but can't think of it. If anyone else has some ideas on what else to check I would certainly appreciate it. Thanks!”source ↗
Where this came up
People with this problem also raised
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