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bmizell's avatar
bmizell
Explorer
Jan 24, 2021

Limit switch wiring for furnace

I replaced my sail switch and limit switch on my suburban P 40 furnace. I took pictures of sail wiring hook up but had no pictures of which wires connected on the limit switch. I took a chance and connected the way thought they were. Does it matter which way the connections are? It seems to be working OK now.

2 Replies

  • Brown wire to Limit switch (from the Time Delay Relay)
    Brown wire from Limit Switch to Sail Switch
    Red wire from Sail Switch to circuit board

    ALL wires are 12VDC+