Turn off then back on if cycles 3 times without running will lock out check gas valve if on check ignitor
Review page 28 of manual in link below. https://s3.amazonaws.com/WebPartners/ProductDocuments/E87034AF-066D-4C62-875E-730C0CADA301.pdf
SOURCE: Rheem water heater with powerglow ignition wont re-light
I have fixed mine. The problem part is the Ignition Control module. It is made by Robert Shaw part # SP10758. I paid $93 plus shipping.
Works great now. A repairman wanted to sell me a gas valve for $488.
Watch out for these people.....
SOURCE: gas water heater burner wont stay lit
This is a major problem with Kenmore power miser 6, 9, and 12's - we purchased a Power Miser 6 in Nov. 2006 and have had 5 service calls in two years - we are on our 6th call now - Go to http://baheyeldin.com/technology-in-society/mistaken-identity-help-with-kenmore-water-heater.html or Complaintsboard.com and you will see multiple complaints on these models. We had Sears out days after we purchased the water heater, and had parts replaced, then more problems in April 2007 - It worked ok until Nov, 2008 and now it has gone out 3 times. We were told it is lint collecting on the screen that sits under the burner (difficult to get to) - we made a vacume attachment out of PCV pipe (like the one the repairman had) and vacumed the screen when the pilot light wouldn't stay lit - that is what they told us was the problem - but this time, the vacuming isn't working - Ash also builds up on the pilot light burner which has to be removed - you can't replace the thermal coupler without replacing the entire burner unit in this model - In short, if you can get your money back and buy a more reliable model, do it! Sears sold us a maintenance agreement after they had come out 3 times ($290), and still we go for 2-5 days without hot water waiting for them to come out and not fix our water heater. They also told us we should build a platform elevated off the floor to increase oxygen and decrease dust - funny our last model was still working at over 10 years and never had an issue in the same location! Sears installed the water heater, and should have installed it on a platform if that was what was needed. Also, there was no warning about having to vacume the screen (UNDER the heater - very difficult) - when we purchased this model or we wouldn't have bought it - Kenmore water heater repair line now tells you to try scrubbing the screen - but who wants to do this every month??? I can't tell you how inconvenient this has been - Looks like there was a class action suit against LOWE's which included the AO Smith water heaters (which is who built the power miser heaters) - no class action suit yet against Kenmore - This has been a nightmare and at the websites I listed, you will see many more such complaints, and some creative solutions...but I doubt any will work for long. Good luck.
SOURCE: Eractic Power Vent Gas Water Heater
Th epproblem you are most likely have is from a safety called a flag switch usually located either in the blower or right past it. When you unplug and replug you reset the switch. Sequence of events.
1 fan comes on.
2 switch is made from the airflow of the fan.
3 ignitor come on
4. main gas valve opens and ignitor starts flame.
You are being stopped at step 2 when the fan does not move with the air. This shuts off and out the water heater from calling again. Find the fan switch and make sure it moves easily. They get dirty and also dry from lack of lube.
Good luck.
SOURCE: Rheem/GE power vent water heater, pilot lites, but not the main
I would check to see if the switch on the blower pressure sensor is closing...When T-stat calls for flame, the circuit starts the blower, then the blower pressure sensor switch closes to allow the main gas valve to be powered.
SOURCE: Rheen PVW50 Hot Water Heater Making Buzzing Noise and Doesn't Light
Why is it always Rheem problems?
Every water heater problem is Rheem.
And Rheem doesn't post any service manuals, like the other two big manufacturers, AO Smith-American, and Bradford White.
Copy following link for troubleshoot by gas control valve.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
Scroll up and find pressure switch heading among links.
You can install gas control valve yourself.
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf
If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
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