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When turning the 2nd burner on keep the button depressed.

Press the 3rd burner button down untill it stops.

Hold both in that position!

As you slowly release the 2nd burner button, continue pressure on 3rd button while gently wrigling it back and forth/side to side .

As the 2nd burner button is coming up and you fidget the 3rd they will hit a happy medium. This happens around about the middle of slowly releasing burner 2s button.

Dont use excessive force, also if its just been started up you will have to gove the machine 5 mins to warm up before this works.

Can easily upload youtube video if so wish

Rinnai Heating &... | Answered on Jul 20, 2019


I wonder if you have this problem below caused by a drop in water pressure from someone flushing a toilet or a washing machine. I would call the company to remedy this issue.

17. What is a cold water sandwich effect? The term “cold water sandwich effect” is a term that is used to describe the introduction of cold water into the hot water supply line during frequent on/off operation of an instantaneous water heater. The cold water sandwich effect, when present, appears as a momentary drop in hot water temperature as it is discharged from a hot water supply outlet (i.e. shower, tub, or faucet). This phenomenon is present in the operation of all instantaneous, tankless style, water heaters, but is minimized with the high tech design of Rinnai water heaters.
The technology built into the Rinnai water heaters is designed to minimize the cold water sandwich effect. Rinnai water heaters are microprocessor controlled and when water flow through them ceases, they remain in a “ready to fire state” for approximately 1 minute. If water flow through a Rinnai water heater begins within the first minute following water flow stoppage, the water heater will fire back up within 1 to 2 seconds. This minimizes the cold water sandwich effect that would otherwise be experienced with a low tech tankless water heater. It should be noted that the cold water sandwich effect cannot be removed completely from tankless style water heaters. The safety standards developed to insure the safe operation of water heaters require a delay in the ignition sequence of all gas water heaters.
While the cold water sandwich effect cannot be completely eliminated from standard plumbing systems, it can be eliminated from plumbing systems that have a supply and return hot water circulating system. Rinnai has developed 2 methods to eliminate the cold water sandwich effect in residential hot water circulating systems.
The first (and preferred) method to remove the cold water sandwich from circulating systems utilizes a small electric tank water heater (powered up) that is used with a dual purpose. The small water heater acts as a mixing tank to eliminate the cold water sandwich effect from the Rinnai water heater and it uses its electric heating element to offset the heat losses from the hot water circulating system.
The second method to remove the cold water sandwich from circulating systems utilizes a small 2 to 6 gallon storage tank installed on the hot water outlet of the Rinnai water heater. This tank acts as a mixing tank to blend the cold water sandwich with hot water and eliminating its effect at fixtures.

Rinnai Water... | Answered on Jul 12, 2019


Cycle the power and see what happens.

Rinnai Heating &... | Answered on Jul 11, 2019


I can't find the manual for a 406TR but sometimes the codes are preserved across similar models. The 506TR manual says the code 62 is appliance overheating / faulty fan motor. https://rinnai.co.nz/Download/ProductFile?encid=wlRVPivhogtawwUVs9imTaEmB0CjAIKlOKNwOUvXmCU~

Rinnai Heating &... | Answered on Jun 28, 2019


The Rinnai 404 says it has
Input: NG, 17 MJ/h, TG 17 MJ/h Propane 17 MJ/h (15 MJ/h (Vic).
Let's work with propane at 17 MJ/h. https://www.manual-hub.com/manuals/rinnai-convector-404-01-pdf-manual
That's 4.72 kwh according to http://unitconversion.org/unit_converter/energy.html
But that's input. I don't know what the efficiency of the unit is, but let's assume 85%. 4.72 * 85%= 4.01 kwh output.

Rinnai Heating &... | Answered on Jun 28, 2019


sab but tell us what it is .suggest that you call a local repair service

Rinnai Heating &... | Answered on Jun 05, 2019


Hi! Go here to see Rinnai 551F service manual http://www.rinnaisales.co.nz/tradesmart/rinnai2/pdfs/service_info/230.pdf. Also go here for additional information on your product http://www.rinnaisales.co.nz/tradesmart/rinnai2/pdfs/installations/230.pdf Thank you for using fixya! I hope I had helped you with your problem! May you have a good day!

Rinnai... | Answered on Jun 03, 2019

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