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Replacing obsolete limit switch
I have a trane xr90 furnace and I’m getting the code (4 flashes) of an open high limit device. I found out that the limit switch is obsolete and I was provided with a sensor; sat. line 2124 for a replacement. My question is How do I hook this up to my furnace being that the connector is completely different and so is the switch itself.?
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2 Replies
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Do you have any pictures.
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Have you got the TUX number and is it mounted for up flow, downflow, or horizontal? The limit switch is just a temp sensing NC two wire switch to protect the plastic exhaust piping.
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