A thermal cutoff is an electrical safety device (either a thermal fuse or thermal switch) that interrupts electric current when heated to a specific temperature. These devices may be for one-time use (a thermal fuse), or may be reset manually or automatically (a thermal switch).
Moreover, can I bypass a thermal fuse?
Locate and Bypass the Fuse
The thermal fuse will look like a thin strip of white plastic with a wire coming out of each end. In order to bypass the thermal fuse, use electrical tape to tape the two ends together. The thermal fuse will then be bypassed. Turn the dryer on to a heat cycle for no more than 90 seconds.
Secondly, how do I know if my immersion heater is broken?
How do I know if my thermal fuse is blown?
To test if your thermal fuse has blown, touch the right side of your multimeter lead to the right side of the fuse, and repeat with the left multimeter lead. If the multimeter needle fails to move, this indicates the thermal fuse has blown.
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.
Your Thermal Cut Out Switch will cut out the power supply if your cooker exceeds a set temperature and excess heat starts to build up inside your cooker.
An immersion heater may last for between two and three years before it burns out and needs to be changed.
Thermostats are used when a media (e.g. water or air) should be heated to a predefined temperature. They control/regulate the power supply for an immersion heater or a-duct heater, for exampe. Thermal cut-offs are used as safety devices to avoid overheating and they are normally reset manually.
Somewhere on your electric water heater, you’ll find a reset button. It’s usually red and often located near the thermostat. It may also be hidden behind a removable metal panel on the unit—and then behind some insulation. Once you find the button, push and release it.
Any temperature above that runs the risk of the cylinder and imersion element furring-up. There is also the risk of scalding at higher temperatures. The immersion heater trips out because there is a legal requirement for all immersion heaters to have a safety cutout built into them.
There are three possible explanations for a breaker being tripped by a hot water heater: water dripping on the electrical lines, a problem with the unit’s thermostat or a problem with the breaker. A malfunctioning thermostat is the most common cause. In this case, the thermostat should be replaced.