Question about Rinnai EnergySaver 556 Air Conditioner

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Ductless heater shutting down

My Rinnai heater shuts off every once and a while (between 1 - 4 days) and the Lo 60 64 lights blink. If I push the on/off button to turn it off and then on again the heater fires up and works again until it shuts down again day(s) later. I was told by Rinnai that the spark ignition system (gap) may need to be reset. I would like to do this myself and save the expensive service call for what seems like a simple fix. Any suggestions?

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  • rtobsession Feb 27, 2008

    I am having the same problem with shutting down. Except, it is within every 1-2 hrs. gets real cold in my apt at night because I am asleep and can't keep turning it back on. I'm not to technical though, so not sure what it can be or if i can fix it myself.

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There is a small wiring harness that goes from the main board down to the sparker board at the very bottom of the heater. Disconnect this harness and reconnect making sure all pins and contacts make good connection. If it continues, replace the wire harness. Also make sure the outlet that the heater is plugged into is a grounded outlet. Stray voltage can interrupt the thinking of this unit.

If all connections are good and the unit is grounded, you are probably looking at replacing the sparker board. I do have these parts and would be more than happy to send them to you for a donation.

Posted on Jan 18, 2008

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A gas appliance should be maintained by a expert for safety issues

Posted on Jan 18, 2008

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