Started getting this and there is no way to clear it. It will not heat the water and there is no way to reset it, just temporarily bypass to get hot water by holding the increase/decrease temp buttons for a few seconds.

It's rare but I find little online for this but apparently related to needing to be flushed. Any experience that after I flush and clean the filter the code will go away? The system is about 3 years old but has been on a 5 stage water filtration system since day one.

Flushing and cleaning the filters is pretty straightforward. Lots of videos for it. Would think there has to be a reset somewhere that you have to manually do, whether you clean it or not. U less it is actually tripping something in flow rate or heating because of build up.

Appears to be a maintenance reminder added to the system that results in the heater only being able to provide temporary hot water until the error code is actually cleared. The maintenance reminder setting is optional, but appears to be currently turned on for your unit.



This is the video referenced in the first one. 45 minutes into the video is the explanation of how it is turned on. Could try doing the process until it reflects off to clear the code and turn it back on to make sure you do your periodic flushes, or just turn it off and leave it off.



I doubt merely flushing the system will clear the code.

Thanks, got the code to clear! I'll do the flush when the pump comes in.