Hotpoint Dryer Thermal Fuse: Location and Testing... | appliancefaults.com

Technical Background:

The thermal fuse is a safety device designed to protect the dryer from overheating. It is a one-time fuse that blows (opens the circuit) when the temperature exceeds a set limit (e.g., 190 degrees Fahrenheit). It is in series with the heating element, and when it blows, it cuts off power to the element.

Symptoms:

The Hotpoint dryer does not heat up. The drum may still turn, but no hot air is produced. The dryer may start and then immediately shut off.

Possible Causes:

Overheated dryer due to poor ventilation.
Clogged lint filter or vent duct.
Faulty heating element causing excessive heat.
Failed blower motor not exhausting air properly.
Restricted exhaust vent, exceeding the fuse temperature rating.

Solution:

1

Unplug the dryer from the 120V outlet. Locate the thermal fuse. It's typically on the blower housing or rear panel inside the dryer. You will likely need a 1/4-inch nut driver to remove the access panel.
2

Visually inspect the fuse. A blown fuse often shows a break in the internal element.
3

CAUTION* Bypass Test (Temporary and Risky): Disconnect the wires from the thermal fuse terminals. Connect the two wires together using an insulated jumper wire.
4

Plug the dryer back into the 120V outlet. Start a short drying cycle (e.g., 10 minutes on high heat).
5

Observe the dryer's operation. If the dryer now heats and runs, the thermal fuse is likely the problem, *but the underlying overheating issue MUST be resolved.*
6

Immediately unplug the dryer. Replace the thermal fuse with an exact replacement part.
7

Thoroughly clean the lint filter, vent duct, and exhaust vent to prevent recurrence. Confirm airflow from outside vent.

Safety Warning:

Disconnect power to the dryer at the breaker panel before performing any repairs. The dryer operates on 120V AC, which can cause serious injury or death. Lock Out/Tag Out (LOTO) procedures must be followed.

Prevention:

Clean the lint filter after every load. Inspect and clean the vent duct at least twice a year, or more frequently if you dry large loads. Ensure the outside vent is not blocked by snow, debris, or bird nests.

Expert Tip:

Some Hotpoint dryers have a service mode that can display error codes or run diagnostic tests. Refer to the service manual for your specific model to access and interpret these features. A common service mode activation is pressing and holding the start button and another button simultaneously for a specified time.

Frequently Asked Questions

•What is the exact replacement thermal fuse part number for my Hotpoint dryer?

The part number will be located on the original fuse. You can also use the model number from the dryer's nameplate to find compatible parts online at appliancepartspros.com or searspartsdirect.com. Always verify compatibility before ordering.

•How do I disassemble the dryer to access the vent duct for cleaning?

The disassembly procedure varies by model. Generally, you'll need to remove the rear panel or the front panel. Refer to a repair manual specific to your Hotpoint dryer model for detailed instructions and diagrams. YouTube is a great source.

•What could cause the thermal fuse to blow repeatedly even after replacing it and cleaning the vent?

Repeated thermal fuse failures suggest a more serious issue, such as a faulty heating element, a failing blower motor, or severely restricted airflow within the dryer itself. A faulty operating thermostat is also a possible cause.

Hotpoint Dryer Thermal Fuse: Location and Testing Without a Meter

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the exact replacement thermal fuse part number for my Hotpoint dryer?

•How do I disassemble the dryer to access the vent duct for cleaning?

•What could cause the thermal fuse to blow repeatedly even after replacing it and cleaning the vent?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: