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Red light is flashing two times which means that pressure…

Customer Question
Red light is flashing...

Red light is flashing two times which means that pressure switch is open. How do I fix that?

Contractor's Assistant: I'll do all I can to help. How long have you been dealing with this?

A couple days

Contractor's Assistant: Do you plan on doing the work yourself?

Yes if it's not too complicated

Contractor's Assistant: Anything else we should know to help you best?

Don't think so

Submitted: 7 months ago.Category: HVAC
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Answered in 31 minutes by:
12/11/2017
HVAC Technician: HVAC Guru, HVAC TECH replied 7 months ago
HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 18,692
Experience: 20yrs in the HVAC industry with certificates and degrees.
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HVAC Technician: HVAC Guru, HVAC TECH replied 7 months ago

That is a pressure switch code, meaning the pressure switch is not closing when the exhaust fan is coming on. So you need to check and make sure the exhaust fan comes on first. If it does come on and nothing is plugged in the exhaust or intake vent then check the pressure tube for blockages. That is the rubber tube that connects the pressure switch to the blower housing. If that tube is blocked or cracked that code will come up. Lastly check the port where the tube connects to the exhaust blower housing make sure that port is not blocked with crud. Normally it is one of these issues causing that code on the furnace. If you need more help let me know.

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HVAC Technician: HVAC Guru, HVAC TECH replied 7 months ago

Hi there,
I was just touching base with you because I have not heard back from you and the question is still open and unrated, I am not credited anything until a good star rating is supplied I would really appreciate it if you could do that thanks!

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HVAC Technician: HVAC Guru, HVAC TECH replied 7 months ago

Hi there,
I was just touching base with you because I have not heard back from you and the question is still open and unrated, I am not credited anything until a good star rating is supplied I would really appreciate it if you could do that thanks!

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