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Thanks. I have a new pressure switch coming so I’ll see if that does the trick.

Thanks, hopefully mine will do the same thing.

It’s an ML93UH series from 2015. I tried almost everything recommended so far At night I dial down the temp to 63. In the morning I turn it up to 67. It heats up for 8-11 minutes and shuts off with a ‘Inducer Energized with Pressure Switch Open’ error (3 flashes). This first cycle usually only...

Hello , I have a 2015 Lennox that’s pretty much doing the same thing. Did you ever find out what the root cause of your problem was?