Nordyne furnace problems.

Old 11-08-21, 07:23 AM
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Nordyne furnace problems.

Hello. Having problem with My Nordyne gas furnace. Going through too many flame sensors. I found that the control board may have some loose connections. I just tapped it and it started “flickering” and the furnace shut down. I reestablished some of the connections and now seems ok. We will see. I have an extra board I bought last year. Just in case. One question ? What does the H MH M L switch do and what setting should it be on ????

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