How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask airheatman Your Own Question
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 7746
Experience:  Furnace, A/C and heat pump specialist.
16514686
Type Your HVAC Question Here...
airheatman is online now
A new question is answered every 9 seconds

I have a rudd 90. Not working, the code says its the

Customer Question

I have a rudd 90. Not working, the code says its the pressure switch but the test that I have done on the switch say's it's working.???
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: 36 Hours
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: not sure what questions to ask
Submitted: 2 months ago.
Category: HVAC
Expert:  airheatman replied 2 months ago.

How did you test the pressure switch? Are you using a vacuum gauge to determine inducer is pulling sufficient vacuum and that switch is indeed closing/

Customer: replied 2 months ago.
Volt meter--Ohm getting 24 volts and Ohm shows open and close
Expert:  airheatman replied 2 months ago.

OK if you have proved the switch really is closing, make sure connections are clean and secure on board.If so it sounds like we have a bad board, not sensing the pressure switch is closed.

Customer: replied 2 months ago.
Not what I wanted to hear
Customer: replied 2 months ago.
Can I by-pass the switch by hooking the two wired together???
Expert:  airheatman replied 2 months ago.

I totally understand that.I am a Rheem/Ruud dealer and am more than happy to guide in troubleshooting if switch was not closing to determine why, but if we know it is, but board says it is not, there is not much troubleshooting left.

If you need help finding best price on board give me model on furnace and I will be happy to help you do so.

Expert:  airheatman replied 2 months ago.

Unfortunately there is no way to bypass .If it were a limit we could (although not recommended), but the board is the brain. It has to sense pressure switch is open before it will allow inducer and furnace sequence to start and then it has to sense it closed before it will allow ignitor and gas valve to open.

Customer: replied 2 months ago.
OK I'll look for some more info on the unit give me a few min.
Expert:  airheatman replied 2 months ago.

model should be inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel

http://i.imgur.com/U8b0GXT.jpg

Customer: replied 2 months ago.
EH5D7075050202532
Expert:  airheatman replied 2 months ago.

That loos more like serial. Model should begin with letter R such as RHGPp7EAUER

Customer: replied 2 months ago.
OK
Customer: replied 2 months ago.
VGRA-09EZAJS
Expert:  airheatman replied 2 months ago.

Looks like Rheem used a couple of different controls on this model. Tell me if perhaps the 8th digit is first number you gave me might be an F instead of a 5

Expert:  airheatman replied 2 months ago.

The most common is the 62-24084-02, Can you see if that number is ***** on your board?

Customer: replied 2 months ago.
I'll check the board
Customer: replied 2 months ago.
62-241136-03
Expert:  airheatman replied 2 months ago.

You can Google that part number 62-241136-03 to find best price.

https://www.amazon.com/62-24136-03-Rheem-Replacement-Furnace-Control/dp/B00FYWFHIE

Customer: replied 2 months ago.
OK I'll check it out
Expert:  airheatman replied 2 months ago.

Wish I had better news, but I do appreciate you allowing me to work with you.Follow up is appreciated

Related HVAC Questions