Got on the phone with rinnai, the case number is 378383. They are sending a new flame rod assembly to Bradbury brothers to resolve the code 11 issue on the master unit tankless. And the master lav sink on the left side we ran a hand rod to unstop and poured customers draini down to help clean it out. Sink drains good and the part should be in a few days and we will set up app. To service the tankless.