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Question DetailsAsked on 10/2/2015

2 red light blinking on pressure valve on furnace

Furnace will not turn on

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Assuming this unit has been working OK till now, probably either the extraction fan did not kick on, or the damper did not open - or possibly it is real windy and natural drafting is messing with the sensors.


Heating and A/C is your Search the List category to find a well-rated and reviewed vendor to call if you do not already have a go-to HVAC guy.


Check your manual or find it online - the number and color and sequence or timing of blinking lights is usually a code for a specific issue, as opposed to a numeric code on more sophisticated electronic systems.

Answered 3 years ago by LCD




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