How do I operate Rinnai heater model RC-337AC-BL

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It sounds like there might be an issue with the power button on your Rinnai RC-329ac heater. Based on your description, it appears that the power button is not functioning properly and the heater can only be turned on by using the "good night" button.
There could be a few reasons for this. One possibility is that the power button is physically damaged or malfunctioning and needs to be replaced. Another possibility is that there's a problem with the control board, which is responsible for managing the heater's functions.
To troubleshoot this issue, I would recommend checking the following:

• Check the power button to make sure it's not physically damaged or jammed.
• Check the control board for any visible damage or malfunction.
• Make sure the wiring connections are secure and not loose.

If you are not comfortable working on these issues, it's best to call for professional help as it may require a technician with experience in Rinnai RC-329ac to properly diagnose and fix the problem.

How to operate Rinnai RC-219AC Fan Heater 2000

was reading a rinnai pdf today about this, green means that the unit has power the red means the burner is operating so it just tells you when the gas is going basically, may not be the same for this rinnai model but is on the energy saver 556 so hopefully that explains your heater for you it should be in the owners manual if you have one as pdf i was reading was manual for another rinnai if you don't have a manual you can try downloading just type heater name and model into your google search with manual mentioned there too should bring up a pdf or a link to manual

Ignition failure. Make sure you have gas, check the flue pipe on both exhaust and air side. Look into the window when you try to start up to see if the igniter arcs.

Tom

try rinnai.us for a user manual

If you hold down the economy button and the up and down arrow buttons for 5 seconds the unit will start an error code display. Get a helper and yell out the numbers when they start blinking. Post the error codes and we can help you

go to rinnai's website and look up the manual for the diagnostic codes. rinnai.us, look under literature/manuals. type in "556". It will tell you how to retreive the error codes.

www.rinnai.co.nz

navigate to tradesmart, space heating, energysavers.
Red filter light means the filter is blocked.
its located directly on the back of the heater and the wall spacer, from the control panel, its about 4 inches back.
Pull it up, clean reinstall