Old 02-05-12, 01:30 PM
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I have a Trane XL80 that started doing the same exact thing as described in the previous message. I am thinking the problem might be the thermal limit switch. I haven't done any troubleshooting yet.
Thanks in advance for any comments. PS: the electronic module is slow blinking when nothing is running which is the OK status.
Old 02-05-12, 01:40 PM
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Please don't piggyback on old threads. It's confusing.

I'd suggest reposting on a new thread.

Take the cover off the burner compartment of the furnace. Obtain the make and model of the furnace off the rating plate in the burner compartment and post it here.

Observe the sequence of events that occurs at the furnace when you turn up the thermostat and post that sequence of events in order and in detail.

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