Question about Rinnai Heating & Cooling
Turns on, lights the gas burner, fan starts, runs for 30 seconds or so, then shuts down. Red alarm light flashes
Posted by Anonymous on
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Posted on Jan 02, 2017
I have had this problem due to the heater 's combustion sensor concluding that all was not well. In my case, the heater had burned up too much of the available oxygen. I didn't notice the lack myself, so it must be very sensitive. I had shut the place up to keep the heat in and eventually it dawned on me to open a door for a minute or so every half hour or so to replenish the oxygen supply.
The situation is worst when the place is very cold as the heater will roar away trying to heat it up as quickly as possible. After I came back for a holiday in winter, I had to set the temperature down to "L" and "Economy" on plus run an electric fan heater for a day to warm the structure to the point where the gas heater could relax and not burn oxygen faster than it could heat the space.
Posted on Jun 14, 2009
This happens because the gas is not lit so the heater goes in fault mode. The gas is not lit because either the valve gas doesn't open or the sparker is non-operational - both will have to be checked.
For that download and follow the service manual
Posted on May 28, 2011
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