I have recently installed a tk4-in-ng
Worked great for two weeks and then ended up shutting down and giving the error code 991 for abnormal combustion
I reset it and it does ok a for a couple weeks then does the same thing
I have adjusted the back draft damper because I noticed an unusal response with the burner blower- after opening additional hot water valves the blower slowed down as if water was only trickling through the line
Any ideas?
Thank you in advance
Guy
Worked great for two weeks and then ended up shutting down and giving the error code 991 for abnormal combustion
I reset it and it does ok a for a couple weeks then does the same thing
I have adjusted the back draft damper because I noticed an unusal response with the burner blower- after opening additional hot water valves the blower slowed down as if water was only trickling through the line
Any ideas?
Thank you in advance
Guy