Furnace Panel Safety Switch

If so the gas valve closes.

Furnace panel safety switch.

All furnaces have a power cutoff switch inside the blower compartment that disconnects power to the furnace controls when the front panel is removed. Those names are pretty self explanatory. In the typical furnace there are three different safety mechanisms that all have to be working properly in order for the furnace to run. This is the switch used disconnects the power to the furnace turning it on and off as needed.

Most building codes require a furnace switch or disconnecting means within sight of the furnace itself. But there s still power coming into the furnace so always turn off the furnace power at the switch on the side of the furnace and at the circuit breaker panel before disconnecting any wires or testing replacing any parts. Your furnace is equipped with a plethora of safety devices flame rollout sensors flame sensors not the same thing despite a similarity in name limit switches serviceman s switch all designed to increase your safety. 2nc safety interlock switch nema 1 12 13 ip 66.

Meanwhile the other black wire coming from the safety switch towards the furnace door connects with the brass screw situated at the base of the safety switch. The blower door safety switch is a simple plunger that when opened cuts the power to your gas fired furnace. The pilot sensor makes sure that the pilot light is on before sending gas into the combustion chamber. The limit switch is a part that stops the furnace from overheating.

A typical 120v door interlock safety switch should conduct power and show 115 120v across the switch when electrical power to the air handler or furnace is on and the door is latched or the switch button is depressed. Take note that the black wire from the breaker is the one needed to be attached with the brass screw located on top of the safety switch. 2620 crenshaw blvd los angeles ca 90016 323 733 9157 checkout your cart is empty. Only 2 left in stock order soon.

After attaching the wire to the safety switch. More buying choices 61 14 6 new offers qou14100jbaf coleman oem replacement furnace door. This switch monitors the temperature of the furnace plenum and detects when it is too high above the switch s settings.