- 1 How do I know if my dryer thermostat is bad?
- 2 How does a dryer cycling thermostat work?
- 3 How do you test a thermal cutoff switch?
- 4 How do I know if my thermal fuse is blown?
- 5 How do I reset my thermal fuse?
- 6 What is the difference between thermal fuse and thermostat?
- 7 What causes dryer thermostat failure?
- 8 Where is the high limit thermostat on a Kenmore Dryer?
- 9 How do you tell if a thermal fuse is blown without a multimeter?
- 10 What causes a thermal cutoff to go bad?
- 11 How do you test thermal overloads?
How do I know if my dryer thermostat is bad?
After removing the cover from the dryer, perform a simple test on each thermostat, using an ohmmeter. Touch one meter lead to one terminal of the thermostat and the other lead to the other terminal. A reading of infinite resistance means that the circuit is broken — in other words, the thermostat is bad.
How does a dryer cycling thermostat work?
Cycling Thermostat: This thermostat is normaly closed, allowing electricity to flow freely. When the dryer heats up it will open, breaking electrical contact to the dryer’s heat source and allowing the drum temperature to drop slightly, causing the thermostat to close again and reenergizing the dryer’s heat source.
How do you test a thermal cutoff switch?
Place the thermal cutoff switch on an electric skillet or griddle. Make sure the two prongs face up toward the ceiling. Set the thermostat on the griddle or skillet 25 degrees higher than the cutoff temperature of the switch. Touch both test probes from the multimeter to the prongs on the thermal cutoff switch.
How do I know if my thermal fuse is blown?
Touch the left multimeter lead to the left side of the thermal fuse; touch the right multimeter lead to the right side of the fuse. Keep an eye on the multimeter needle; a needle that fails to move indicates a blown thermal fuse.
How do I reset my thermal fuse?
- Shut off the power. Unplug the dryer to disconnect electrical power.
- Remove the back panel. Move the dryer forward and use a 1/4-inch nut driver to remove the screws from the back panel.
- Remove the fuse.
- Install the new thermal fuse.
- Reattach the back panel.
- Plug in the dryer.
- Clean the exhaust vent.
What is the difference between thermal fuse and thermostat?
So a thermal fuse is a safety feature. Thermostat is not a safety feature. Thermostat is a measuring tool. Thermostats measure temperature.
What causes dryer thermostat failure?
A frayed wire can cause a thermostat to keep going bad. A dryer will blow a thermal fuse if it’s close to overheating. Each time the thermal fuse blows it can interfere with a thermostat’s function and cause it to go bad, too.
Where is the high limit thermostat on a Kenmore Dryer?
This high limit thermostat acts as a safety mechanism to keep the dryer from overheating. If your thermostat is malfunctioning, your dryer may not heat. This thermostat is located beneath the dryer vent at the back of the appliance.
How do you tell if a thermal fuse is blown without a multimeter?
Testing By Bypassing The Fuse If you do not have a multimeter, you can also test whether or not the fuse is working by bypassing the fuse itself. Simply detach the wires from the fuse, wire them together using a jumper wire and attempt to operate the dryer.
What causes a thermal cutoff to go bad?
Clogged or restricted exhaust vent air flow is the most frequent cause of a thermal fuse blowing. Check the lint screen for lint or a build-up of debris that could be inhibiting air flow through the dryer. Before replacing the thermal fuse again, try these steps: Unplug the dryer to disconnect electrical power.
How do you test thermal overloads?
Overload Protection Test:
- Measure the normal motor running current (i motor).
- Turn off the motor and let it cool for about 10 minutes.
- Calculate the following ratio: i (motor) / i ( overload min FLA).
- Set the overload to its minimum FLA and turn on the motor.
- Wait for the overload to trip.