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Marc, Plumber
Category: Plumbing
Satisfied Customers: 1127
Experience:  Plumbing heating & home maintenance contractor
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I have two Rinnai R75LSi Direct Vent Tankless Water Heaters.

Customer Question

I have two Rinnai R75LSi Direct Vent Tankless Water Heaters. One of them is beeping and flashing a code 12. The manual states this is flame failure. I cannot get a plumber out to my home until Monday. What should I do?
Submitted: 1 year ago.
Category: Plumbing
Expert:  Rick replied 1 year ago.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.The options are pretty limited but there are a couple things you can try without getting to involved. First unplug the unit, wait a minute then plug it back in then turn on a hot water faucet and see if it fires up