Question about Rinnai Digital Remote Water Heater Control Mcc-45-4us
Loud noises while under heavy water demand
I just had this exact problem. It kept getting worse until we had no water. Our Rinnai tankless hot water heater started the same way though, with hot water for a few minutes and then would shut off with an error code 10. We just had to shut the hot water off and then back on, wait a minute or so and we had hot water back for a few minutes. Our unit would come on with a loud vibrating noise and remain until it shut off with an error code 10 (air flow fault). The solution was to remove the blower fan and blow out the squirrel cage. Ours had moths in it. We also vacuumed out the fan housing. Be careful to mark any wires you disconnect and take pictures before removal. Our unit is now almost silent when it comes on and supplies endless hot water.
Posted on Aug 11, 2016
Sounds like there is something loose in the line.Like cut off valve,check valve.
Posted on Mar 15, 2009
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Posted on Jan 02, 2017
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