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Why does my dryer keep blowing thermal fuses.

Why does my dryer keep blowing thermal fuses.

Dryer heater won't cycle on and off. Vents are clear because I can feel cold air from outside when dryer is off. I've also inspected ducts. Can a damaged blower wheel cause the cycling thermostat to fail or the thermal fuse to blow? Or both?




Rep: 350.3k




"Thermal fuses burn out to prevent fires. All dryers have a high limit safety thermostat that cuts power to the element at a lower temperature than the thermal fuse burnout temperature. In addition, the dryer may have a thermometer and temperature control or a simple thermostat. So there are three temperature sensors in most dryers, and the thermal fuse is the last.

The leading cause of thermal fuse burnout is obstructed airflow. Check the exhaust path for excessive lint or debris all the way to the exit point of the exhaust pipe. Check the blower wheel to make sure it isn't broken or clogged up. This can be done by using ""cool down"" or ""air fluff"" mode. If the unit has a lint trap on the outside of the drum, make sure it seals up when installed.

If there is good airflow and the heater is working correctly, the thermal fuse should not burn out. If the temperature controls are not doing their jobs, replace them."

in the last few weeks, my heating element burnt out, then two high limit thermistat, and no the thermistor has blown out. we noticed this when the dryer the would turn off after 3 minutes. Is there anything else I should be checking? I would prefer to not have to take the dryer a part again…

I replaced the thermistor on my Samsung dryer, it blew twice before I figured out the problem. There is a thin film that developed on my lint trap that was restricting air flow, it took me a while to clean it off using hot hot water and soap, I was very careful not to tear the screen. Once I replaced the thermistor my problem was solved.

I am going through this again!! My thermal cutoff keeps opening. I cleaned they exhaust line. I even leveled the dryer thinking that because it was leaning forward all the clothes were clumping by the lint screen area impacting air flow. I just ordered a generic thermistor as when I test the one o have it seems to be reading much higher than 11k. I also ordered a digital multimeter as my analog one ohm scale is not useful. I have been fighting my dryer for years! I may just check the drum wheels next based on the idea about the pulley someone mentioned.

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