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Marc, Plumber
Category: Plumbing
Satisfied Customers: 1126
Experience:  Plumbing heating & home maintenance contractor
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Working on a rinnai on demand water heater. it is displaying

Customer Question

working on a rinnai on demand water heater . it is displaying 10 code what does that mean?
Submitted: 11 months ago.
Category: Plumbing
Expert:  WCohn replied 11 months ago.

Hello my name Wade and I look forward to helping you!

Expert:  WCohn replied 11 months ago.

Error code 10 is a flue or exhaust blockage.

Expert:  WCohn replied 11 months ago.

What it means is when the fan comes on to bring fresh air into the burner assembly it's building up air pressure because it can not exhaust it. How old is the unit?