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Question About Nordyne Heating System M1MB 070A BW
Sensor Lights...

Indicator light flashing twice/ stating Pressure switch is open.

Asked by patricia loera on 12/06/2008 1  Answer

ManualsOnline posted an answer 15 years, 11 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

Tiffany posted an answer 15 years, 9 months ago

0 We had the furnace guys here and they said they checked pressure switch and other things. They all seemed fine. They did say it could be the regulator thats connected to house. We have replaced that with a new one. Furnace ran great for 3 days and then started acting up again!
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