Digital control keep flushing error3 - Amtrol Water Heaters

Good tight joints and PTFE tape.

Water heater 14 years old, probably has never been flushed, Flush recommended at least every 6 months, Build up inside tank may be to late to flush, but you can try or replace heater.
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The way it is designed on the water inlet it is supposed to cause the water to swirl around the tank wall to help keep sediment from building up. I would still recommend draining and flushing every couple of years if your water has a very high mineral content. Thank you.

you need to pump cheap vinagar through it for 15 min. This means that you need to turn off the power and isolate the water heater from the rest of your plumbing. When you are done you need to flush the heater with water before turning the power back on.

flush heat exchanger

when i flush my radiator.i would first drain out all my old antifreeze.fill radiator up with water then put a bottle radiator flush. pour in radiator.then i will crank car up turn on heater wide open allowing radiator flush flush out radiaator and heater core when done i will drain out water. put in more water flush out all radiator flush out engine and radiator.then put back in antifreeze.you dont want to run water hose to heater core it will rupture it water pressure too high.

How reliable is your AC? With the digital r/c connected, every time the heater recovers from power outage it's in the OFF default state. If you can not fix the power issue, disconnect the remote control. The w/h will recover in the ON state.

rheen pronto water heater remote flashing 76

• you have a lime controll issue , you need to flush the unit using food grade vinegar. go to the rinnai web site for instructions. it is a pretty simple solution they make a kit to flush your unit if it was installed with an isolation kit.