What does a high limit thermostat do?
A high-limit thermostat is a switch that can be changed. The high limit thermostat keeps the dryer from overheating. This piece will shut down the power to the heating element once the temperature in the dryer reaches a certain point.
Is a high limit thermostat the same as a thermal fuse?
The thermal cut-off (fuse) is meant to trip at a higher temperature than that of a high limit thermostat. This is a one time use fuse, so when it does trip, you must replace it. The hi-limit thermostat acts as a safety mechanism that keeps the dryer from overheating.
Why does high limit thermostat go bad?
Blown Thermal Fuse 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.
What causes a high limit switch to trip?
A high limit switch will keep tripping due to a dirty flame sensor, short cycling, obstructed airflow, or a defective switch. These lead to overheating within the gas furnace that triggers tripping as a safety measure to prevent fires. Clean and replace dirty and worn-out parts to fix the problem.
How does a high limit switch work?
The high limit switch is a furnace component that controls elements of operation and safeguards the system. First, the limit switch tells the blower fan when to turn on and off. It does so by sensing air supply temperature, telling the fan to turn on once air is heated in order to circulate it into the home.
How much does it cost to replace a dryer thermostat?
Other Costs to Fix a Dryer
| Part | Material Cost | Total Cost |
|---|---|---|
| Dryer thermostat | $3-20 | $180 |
| Bearing | $50 | $130-$250 |
| Roller | $10-30 | $90-$230 |
| Timer | $50-$70 | $130-$270 |
What is the difference between thermal fuse and thermostat?
The dryer thermal fuse is a different type of thermostat that is usually on the blower assembly inside the dryer. This is a fuse that if tripped (in other words, the circuit is broken), the dryer will not start. It’s a safety feature designed to prevent the dryer from overheating to a dangerous level.