The high limit switch controls excess heat from damaging the heat exchanger.
Rv furnace limit switch.
Time delay relay used on older furnaces newer furnaces have the relay incorporated into the circuit board this relay performs two separate jobs one to handle the relatively high current needed to run the blower motor and two to allow the blower to run for 45 to 90 seconds after the thermostat is satisfied.
A limit switch is a device that s located under your furnace s supply plenum.
If the temperatures get too high the switch will cut power and avoid damage that could be caused.
Rv furnace doesn t shut off when temperature is reached.
Troubleshooting the rv furnace.
It can be caused by a faulty limit switch.
It reads the temperature of the plenum and waits until it gets appropriately warm.
Pinnacle black thermostat limit switch hh18ha211 bryant oem furnace limit switch l225 50 by oem replm for bryant b13701 55 goodman oem furnace replacement limit switch.