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Rinnai cosyglow 650 and it cuts out. It does not matter if it''s been on for 10 seconds or one hour, sometimes its stays on for a while sometimes if on;t go at all. Any help?

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Rinnai fan stops turning.

You can reach the fan wheel by using a can of compressed air normally used to clean your compute keyboard. Make sure you hold a vacuum wand close to the heater when doing this to collect the debris. Using a small coffee stir straw, lubricate the end of the fan motor shaft with light motor oil. This will keep the motor alive for a bit longer.

Posted on Aug 30, 2007

  • 61 Answers

SOURCE: Rinnai Heater 557ft won't stay on!

it sounds like a thermal cut-out switch. check that vents aren't covered?

Posted on Jun 01, 2009

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SOURCE: My Rinnai 650 Cosyglow Natural

This heater has a safety valve on the power on/main gas valve button: after the burner is lit you must keep the button pressed for about 10 seconds to allow a sensor to heat up and trigger the thermostat to keep the valve open. This safety has been implemented that if in case the flame dies out the gas doesn't keeps escaping, putting you and your house in danger.
If after 10 seconds when you take your finger off the button the flame dies out it means that the safety thermostat has failed and it will have to be replaced. Because it's a gas run device i strongly suggest you call a professional for that - the repair will cost you roughly $200.

Posted on May 12, 2011

  • 4736 Answers

SOURCE: rinnai reh15-217 burners cut out automatically

If you're saying the burners turn OFF after 1/2 hour, but the pilot light stays lit ... I'd have to assume that the automatic thermostat control on the heater, turned the burners OFF, because the temperature you had it set on had been reached. The real question (at least for me) is are you allowing enough time for the temperature to drop and the heater to turn back ON automatically?

Posted on May 16, 2011

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When in the shower, the heat fluctuates from hot to lukewarm over a 10 second cycle. The water will not stay at a constant temperature.

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the solution is to install a small buffer tank (5 or 10 gallon electric water heater) after the Rinnai. this will give the water something to mix in. it will solve your problem.

did you make sure to use a 3/4" gas line to the unit. not just 3/4" at the unit itself. sometimes when there is not enough gas, the unit will act funny and cycle from hot to warm or even cold. Make sure you check the gas line size, its very important.

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I have a rinnai cosy glow 650 when i push the start button it glows up but soon as i let the button go it stops glowing

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it sounds like a thermal cut-out switch. check that vents aren't covered?

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