HVAC Questions? Ask an HVAC Expert for Answers ASAP
Hello I am here to assist you.
There are two kinds of limit switches. We will first locate the main limit switch and try to bypass it.
It is a rectangular device that has two wires attached to it and is usually located inside the furnace cabinet on the back panel wall just above the gas valve.
REmove the furnace panel door and locate it and let me know when you find it.
Remove the two wires that are attached to it and connect them together metal to metal very good.
While attached, call for heat. Cut the power first.
Let me know when you finish.
ok done connecting the two together
Cut the power back on and turn the heat on and tell me what happens.
That means you need a new Main Limit switch.
can i leave this bypassed
You can get one here at www.AmericanHVACparts.com Have model number and serial number ready when ordering.
It is not recommended.
It is a safety device that protects the heater against over heating. It shuts the furnace off if it overheats.
If you do leave it bypassed, monitor it closely.
ok thank you i will order it. Thank you
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