![]() One thing I did notice is that with the cover off and looking straight into the combustion chamber through the window, watching the burner light and heat water, something may be amiss. The vent, which runs slightly uphill after a 90 on the top of the unit has a proper drain just after the 90, so that looks good. There is no water in the tube running to the bottom of the gas valve. Well, spent a couple of hours playing with it this weekend and while I did learn some interesting things about the way it operates, I still don't have a definitive reason the flame is going out. Looks like time to suck it up and get a pro involved. I will print off your comments and share with him. The local guys in that area want $50 more an hour than he does - so even with travel time - I'm probably better off bringing him in. Just had my plumber/heating guy out there to replace a boiler at the same property ($5300!!) and he commented that while he was not Rinnai-factory certified - he'd had plenty of experience with them and would be happy to work on it (if I paid him for 4-hours of travel time). I will check the inducer motor and burner - but will likely have to bring a pro out to do it - as I am just knowledgable enough to get myself in trouble. DO NOT attempt any of this without proper gaskets in hand for the reassembly. take the 3 burners in the left side of the tray and move them to the flame rod/sparker area. Remove them and carefully remove the strap. With the burner tray out there are four screws that hold the burners in the rack (two in the back, two on the sides). on the burners it happens right where the flame rod and sparker are. The R53 has 16 identical burners in its rack. If there is a lot of debris or precipitant (from moisture that has come down onto the burner, again to Rick's point) the burner tray must be removed and the individual burners cleaned. Lift the vent off the top and look down at the burner tray. Rick's suggestion on the gas pressure check at high flows is correct. I have trouble getting my fat head in there, so you may need an inspection mirror. While the motor is out get a light and see if the diffuser plate under the burner is clear. Careful in replacement that you get the tongue in the back before lifting the motor to attach the two screws. I should also note that the house is in a very rural area, and there are no Rinnai Factory Qualified plumbers within 75 miles - so it is tough (and expensive) to get someone out there.ĭrop the inducer motor and inspect/clean it. I'd hate to have to replace it if I don't have to. I should think that it is extremely "low mileage" for its age, so I am surprised to see it having problems. The house is a weekend cabin and only sees 10-12 24-hour visits a year - so the unit gets very little use. Should I replace the flame rod? Isn't there some flow sensor that might cause this? I did so and am still seeing the same symptoms and the same error code. The plumber inspected all the Rinnai's electrical connections, cleaned the flame rod and burner and told me to clean the heat exchanger - by flushing it with vinegar for an hour and cleaning the filter. I'm sure it flows a lot more than the other appliances and this is why it fails. ![]() ![]() Other hot water appliances (kitchen sink, bathroom sinks, etc.) worked fine. When he arrived, I told him that the unit had been loosing flame every time you'd try to fill the bath after 5-10 minutes. Since I was overdue for a checkup on all my domestic plumbing, I contacted a local plumbing/Heating guy and asked him to come out and do a service on both the boiler and our R53 tankless water heater. Our 10-yr-old Rinnai R53 (LP) started getting occassional Error Code 12s recently after 10 years of excellent performance. INSTALLER: Leave this manual with the appliance.ĬONSUMER: Retain this manual for future reference. Owner’s Operation and Installation Manual for the Property damage, personal injury or loss of life. WARNING: If the information in these instructions is notįollowed exactly, a fire or explosion may result causing Installer, service agency or the gas supplier. Installation and service must be performed by a qualified If you cannot reach your gas supplier, call the fire Immediately call your gas supplier from a neighbor’s phone. Liquids in the vicinity of this or any other appliance.ĭo not touch any electrical switch do not use any phone in Do not store or use gasoline or other flammable vapors and ![]()
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