Karen asked ... Royal 480nt cash register?    |    andrew smith asked ... 2009 fiesta 1388 cc titainum?    |    Eric asked ... Strimmer fuel line?    |    Frank asked ... Working fine. No cold air?    |    c.m.brown asked ... Replace chuck on aeg power drill sb2e 700r?    |    Click here to ask your question

vaillant 837?

hi i have a 837 vaillant with the code s7. what can it be?
tony, January 2011
'S' is a status code, basically telling you what the boiler is doing, S7 means the pump is running on after the CH has been run.

Completely normal.

Carefree, January 2011
link Click here to see other fixes for Vaillant 837.