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There are usually 2 on a domestic electric heater, one about a foot from the top and the other near the bottom, both attached to the elements.
A limit switch is a switch that will shut off a burner at the highest temp that is allowed. Example:If the limit is set at 200 degrees, the inside of your heater will heat up to that temp, then the burner will shut off. The blower motor or circulator pump will move the air or water around your house. When the inside of your heater cools down anywhere from 15-25 degrees, the burner will come back on & the cycle repeats itself over & over until the thermostat is satisfied.
I had the same problem. Turns out it was the thermal limit switch. Very inexpensive and easy fix.
The question is why would you want to and which limit are you suggesting? Bypassing any limit would decrease the safety features designed to protect the equipment and occupancy. Limits and safety interlocks are sometimes bypassed for troubleshooting purposes or emergencies but I would not unless you have qualifications to determine the consequences.
See the related link below for a run-down of limits in the Twitter Help Center.
limit switch on hvac used to cut off low voltage on heating when system over heat limit
it s a limit switch to prevent the wire breakage due to increase the hook
A limit switch is used to determine how far a moving part of an appliance will travel during its use. They can be manually operated or may work via a sensor.
+5
Do you mean that the heater will not shut down either by turning the thermostat down or turning the switch off. If turning the pump off will not shut down the heater it could possibly be one of the high limits or the gas valve has failed in the open position. If the heater will not fire when calling for heat then one or more components has failed. k
U need a cdi that has no rev limit
A switch designed to cut off power automatically at or near the limit of travel of a moving object controlled by electrical means