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Old 08-28-2016, 05:12 PM   #1
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Rinnai (R94LS) Heating Issue


Rinnai (R94LS) I have two faucets that are separate handles for hot and cold. Both of those draw hot water. But in the last two months my shower and kitchen sink faucet (which are single handle faucet mixer values do not draw hot water all the time. However, if I start the hot water off the hot water with separate handle it works. This unit has been great since the date we bought it up until the last couple of months. The unit is clean and free of dust and build up. Also when I flip the switch to open the relief valve it starts heating the water. Heads up I have no codes and have checked. Any ideas? Thanks.
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Old 08-28-2016, 07:24 PM   #2
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Re: Rinnai (R94LS) Heating Issue


Welcome to the forum 007.

With no code errors, sounds like your rinnai is working fine. It's possible the problem may be in your kitchen or shower mixing valves/cartridge. Just an idea.
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Old 08-29-2016, 08:43 AM   #3
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Re: Rinnai (R94LS) Heating Issue


Thanks, I figured out that my screens were clogged, which in turn slowed the water draw down. Which in turn keeps the heater from kicking on.
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Old 08-29-2016, 11:17 AM   #4
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Re: Rinnai (R94LS) Heating Issue


Glad you got it figured out 007. Thanks for the update.
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heating issues , rinnai , tankless water heater


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