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Induction motor runs fine with god air flow, but pressure…

Customer Question
Induction motor runs fine...

Induction motor runs fine with god air flow, but pressure switch does not make. If I disconnect the top air line from the vacuum switch (the one that goes to the gas valve and the top of the furnace) it works OK. What does that mean?

Contractor's Assistant: Did you double-check the thermostat's settings? And what about the filters?

Yes, botha re OK

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

Yes

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

Jumping out the pressure switch electricaly also works.

Submitted: 7 months ago.Category: HVAC
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Answered in 26 minutes by:
1/6/2018
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago
Steve Peck
Steve Peck, Over 24 years experience Just Ask, quick HVAC repair!
Category: HVAC
Satisfied Customers: 16
Experience: Owner at Steve Peck Heat And Air
Verified

Hello, I'm Steve I think I can help you with this pressure switch question.

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Customer reply replied 7 months ago
OK, good.
Customer reply replied 7 months ago
What does the top (non-vacuum )line to the switch do? Why does it connect to the gas valve?
Customer reply replied 7 months ago
Are you there?
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Yes, Sorry i walked in the other room.

I'm here now.

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Customer reply replied 7 months ago
I don't see a response.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

We deal with quite a few different models. Can you tell me what the model or brand of furnace?

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Customer reply replied 7 months ago
NO, I don't want a phone call, just an answer.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Can you see my responses?

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HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Sorry about the phone call thing, its automatic.

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Customer reply replied 7 months ago
Bryant 350mav06012ffka series d.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Awww, Thank you, ***** ***** a minute to refresh my memory.

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HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Ok that tube is connected to the upper fire box then down to valve correct?

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Customer reply replied 7 months ago
a tee to the gas valve and then to the pressure switch.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Alright, those are designed to assure the pressure is equal on both sides of the system, if I remember correctly.

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HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

I assume you get a flash code and furnace wont run. Like a code 31?

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Customer reply replied 7 months ago
it runs with that top air line disconnected, but not connected. But the top line does not appear to have any pressure on it. The bot***** *****ne has lots of vacuum.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Like this.

31 Pressure Switch Not Closed Check to make sure that all PVC pipes leading into the combustion-air intake and vent/ exhaust are free from any cracks and sags. Also check the combustion-air intake and vent/ exhaust pipes on the outside of your home for blockage.

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HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

^^^ from the manual .

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Customer reply replied 7 months ago
I read the manual. If you don't have the answer to the question I am asking, please say so and refund my money now.
Customer reply replied 7 months ago
This process is really bad, not like a real chat. More like a way to exhaust my patience while extracting money.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

You will probably find that the issue is found on page 8 of the manual. I have found that sometimes the gasket is leaking.

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HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Also the flue on the outside of the house is plugged or just has A few sticks or the squirrels have dropped nuts in them. I've seen many different things.

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Customer reply replied 7 months ago
Still not an answer. Lets quit. Please refund or cancel all charges.
HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

I'm Very sorry you aren't getting your questions answered.. I am a real person, sitting in my home with 25 years experance in HVAC.

I will put in a request for you to be refunded any money you are out.

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HVAC Technician: Steve Peck, Over 24 years experience Just Ask, quick HVAC repair! replied 7 months ago

Very sorry you're not satisfied.

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