Question about Rinnai RHFE-556FAIII 21,500 BTU Ductless Energy Saver Heater - LP(Propane) Gas

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Rinnai heater turns itself off

Hi. I have a Rinnai Energy saver 551f heater that won't stay on. I've pulled the back off and vaccumed out all the dust. I turn the knob to on and wait the 10 secs and the gas lights and then it turns itself off again. It didn't come with instructions when I moved in. Please help

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Dannizen,

You could have something as simple as an air hose off, or a piece of carbon on the flame sensor. Your problem could also be a gas valve , which is much more complicated. If you are handy with tools you could be able fix either quickly. If you’re not good with tools you will need to get some help. Either way you have to have some back ground info on your heater. Get in touch with Rinnai and get a service manual for your unit. They cost around $15. If you have to call a service guy, use the Rinnai web site to find an authorized service person. Don’t just let your fingers do the walking and get some guy who has no idea what a Rinnai is. You’re only asking for trouble there. Your unit is a little older so don’t be surprised if parts are hard to find.

Good luck,

Tom Hawkins
Bethel, Alaska
hawkins111@gci.net

Posted on Mar 07, 2009

  • Rob9k Dec 01, 2010

    I had the same continuing problem with 2 Rennai ventless heaters. I solved it by vacuuming out the dust and webs annually but that only worked on one unit this time. The other would stay lit for about 2 minutes, then the heat and pilot would turn off. Here's where I found a lasting solution:http://www.foreverhotwater.com/documents... On page 6 there's an illustration for cleaning the oxygen depletion sensor. Without disassembling the unit as shown, I just blew compressed air, angled to the left, through point #2. Problem solved - for a few more years I hope.

    Rob

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And here also an extra, the service repair manual:
Untitled

With compliments.

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