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I have a 2 year old Rinnai 98ip tankless water heater that is throwing the error code 11. My gas pressures have all been checked, I have gas on hand, the piping size etc... is correct. I first started getting a code 12 only when I tried to fill the tub, but a single shower or faucet would work just fine. Now, I get a code 11 with no ignition at all. However, if I isolate the gas supply valve, turn on the sink and open the gas valve at just the right time during it's sequence it will fire up on low fire and then error out within 10 seconds or so as a code 12. I have checked the venting and no obstructions. I put a screwdriver next to the gas solenoid valve and when it calls for gas there is definately magnetism there so the valve has power....I'm lost and unfortunately live in the middle of nowhere Alaska so my resources are, well, none. If anyone can help me troubleshoot this issue, I would be very grateful!!!!
Thank you in advance,