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Rick Mather
Rick Mather, HVAC Technician
Category: HVAC
Satisfied Customers: 3634
Experience:  35 years experience, HVAC
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I have a Rheem gas furnace (RGPH-07EAUER). It will light and

Customer Question

I have a Rheem gas furnace (RGPH-07EAUER). It will light and then stay on for about 3-5 seconds,and then it shut off and relight and do it all over again. It gives me a error code saying the pressure switch is closed.
Submitted: 6 years ago.
Category: HVAC
Expert:  Rick Mather replied 6 years ago.

Clean the pressure switch sensing lines they get clogged, here is what they look like

 

 

http://americanhvacparts.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=ps-rheem

Customer: replied 6 years ago.
Already tried cleaning the line.
Expert:  Rick Mather replied 6 years ago.
replace switch
Customer: replied 6 years ago.
I checked the switch using a manometer
Expert:  Rick Mather replied 6 years ago.
well code says pressure switch maybe not working electrical contacts
Customer: replied 6 years ago.
Give me a minute let me check.
Expert:  Rick Mather replied 6 years ago.

ok

 

 

should be able to have open closed contacts



Edited by Rick Mather on 11/19/2010 at 10:40 PM EST
Customer: replied 6 years ago.
Changed it and still the same thing.
Expert:  Rick Mather replied 6 years ago.
You say that switch is closed sure its pressure switch and not limit switch open
Customer: replied 6 years ago.
Yes check it
Expert:  Rick Mather replied 6 years ago.
Yours has roll out switch and limit and another if down flow or horizontal
Customer: replied 6 years ago.
Yes
Expert:  Rick Mather replied 6 years ago.

See if this diagram shows

 

https://www.rheemote.net/online/mainframe.asp

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