Our two year old heater's not working on low temps, only works when crank up to 22 C plus. It's switching itself off and flashing 12 or I2. I've cleaned the filter at the back but it hasn't fixed the problem. Can't find my manual, can anyone help?
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Try national energy they sell convestion kits It would need a gas fitter to do the work , you may need to a quote on this , they would be able to tell you if it is worth it ,its hard to tell with out looking at the heater .
Turn the heater OFF and unplug it from the wall. Remove the filter and reinstall it, making sure it's fitted properly into the heater. Wait 5 minutes and plug the heater back ion and turn it ON. You may have to reset the controls back to way you had them. Completing what you just did, should have allowed the heater reset itself and function as it should. If this sort of thing continues to reoccur, contact your local Rinnai Dealer for service.
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.
Hi This is happening to us and I called Rinnai... they suggested that if anyone either in our apartment or an ajoining one has painted walls or varnished a floor that the convection heater picks up the smell and the only way to get rid of it is to burn it off by running the heater for several hours in a well ventalated room...