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I have a 20 year old Rheem Rudd 40 gal Power Vent gas unit…

Customer Question
I have a 20...

I have a 20 year old Rheem Rudd 40 gal Power Vent gas unit (item #900460155/ SERIAL # 0799j32639) that won't run. Gas is good-glow plug and flame sensor are good (dismantled and cleaned with steel wool) but the relay in the mechanical control unit continuously clicks ON AND OFF? -occasionally lighting the flame for about 10 seconds and then the flame goes out and the relay continues to click. Any idea how to repair this? Can I order a new control unit?

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

I have no owners manual so I'm not able to locate the thermosat (other than a white plastic nob that has curious markings not indicating temperature) and I have no idea where the filters are. I have shop vac'ed the interior without making any difference

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

The hot water tank is at my cottage. My cottage is on an island in the middle of Georgian Bay. I have no option but to do all repairs and maintenance myself...

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

I spent 30 minutes on hold with the Rheem parts department and they were unable to locate my particular model of water heater in their data base. I would love to get my hands on an owner's manual.

Submitted: 10 months ago.Category: HVAC
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Answered in 12 minutes by:
9/27/2017
HVAC Technician: Rick, HVAC Supervisor replied 10 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,627
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of your situation.

Can you give me some pictures of the gas valve and controls?

http://ww2.justanswer.com/help/how-do-i-send-photo-or-file-expert-hl

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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