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home Fix label Heating label_important Home Heating Systems category Vaillant

vaillant 837?

hi i have a 837 vaillant with the code s7. what can it be?
tony, January 2011
home Fix label Heating label_important Home Heating Systems category Vaillantdone
'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
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