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View Full Version : Furnace pressure switch for an olsen ultramax

silverado410
Dec 16, 2009, 09:41 PM
Could the pressure switch cause no flame on the furnace
silverado410
Dec 16, 2009, 09:50 PM
Could the pressure switch cause no flame on the furnace
hvac1000
Dec 17, 2009, 06:56 AM
Yes it can hold the burner off.