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I have a Rinnai RL94i Propane tankless water heater. I am…

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I have a Rinnai RL94i...
I have a Rinnai RL94i Propane tankless water heater.
I am getting an error code of 10, air flow restrictions.
We only have about 3 feet of pipe, and its been inspected.
Authorized service provider could only recommend "unplugging the unit" to fix. And charged me $140 for such sage advice!
Totally unsatisfactory!
Blower is running fine. There is no shrubbery anywhere near outside vent.
Help!
Submitted: 2 years ago.Category: Plumbing
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Answered in 5 minutes by:
5/1/2016
Plumber: WCohn, Journeyman Plumber replied 2 years ago
WCohn
WCohn, Journeyman Plumber
Category: Plumbing
Satisfied Customers: 1,712
Experience: Journeyman Plumber/Estimator
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My name is ***** ***** I look forward to helping you
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Plumber: WCohn, Journeyman Plumber replied 2 years ago
Well, you are in luck because this is my wheelhouse.
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Plumber: WCohn, Journeyman Plumber replied 2 years ago
Other than unplugging it have you done anything else? Can I get the serial number? How old is the unit? What elevation are you at?
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Plumber: WCohn, Journeyman Plumber replied 2 years ago
I'm online and able to help you live if can can answer the previously asked questions
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Plumber: WCohn, Journeyman Plumber replied 2 years ago
Have you resolved your issue?
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