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Answered in 20 minutes by:
1/9/2018
Phil, Mechanical Engineer.
Category: Plumbing
Satisfied Customers: 9,317
Experience: Retired mech. contractor, shop owner, 51 yrs experience.
VerifiedHello, there is a 'flow switch' inside the water heater that shuts the burners off when flow drops below 0.5 gallons per minute, the problem is that its *sticking. That is caused by calcium carbonate (hard water deposits) building up inside the water heater.
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For that reason these types of water heaters must be flushed regularly with white vinegar, in some areas once a year depending on how hard the water is.
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Here is a video on how thats done, your water heater will not be identical but it will be very similar.
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We can go from here without any time limits as needed. You can also have this done by a local plumber for $250 or so if the acid flush valves were installed with the heater.
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