I have a Noritz DV150LP and it is flashing an error code (643). I am the original installer and I am looking for any and all information regarding the 643 error code and how to remedy the problem
I reset the unit yesterday and but the error code is flashing again today. To be honest I don't know what the 643 error code is. I would also like information on how to fix the problem.
Water Heaters - Noritz