Hi Gents,
I have gleamed bit of info over the years so happy to share some troubleshooting tips for the Rinnai 58 E- which is in my opinion a great water heater. The only issue i have found is if you use cheap rubber pigtails they degrade in the UV / salt air we have here and they cause a block to the pilot injector, you can fix this by blowing out the pilot injector with a airgun and swapping the pig tails for the heavy duty stainless steel / plastic coated ones. Also a lack of water to the unit will cause the main burners not to ignite, i found this with a kinked shower hose as well.
I have an issue with one of the pilot lights in that its very small despite blowing it out. Any ideas as to how i can improve the size of the flame would be much appreciated. Could be one for the man, the myth the legend-Paloma Bob.
Best wishes,
Alex