home Fix label Heating label_important Home Heating Systems category Vaillant

How does central heating turn itself on when timer is off?

I have a Vaillant THERMOcompact 624E. How does the heating turn itself on at times when the timer is switched off. Is this just a faulty timer switch?

Paul, January 2007

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Usually caused by the frost stat being trigged. This is wired in parallel to the timer so as to over ride it in the event of frost.

allgasinstaller, January 2010

link Click here to see other fixes for Vaillant.

Fix Fault - Heating

home label Heating label_important Home Heating Systems

Fix Fault - Heating

home label Heating label_important Home Heating Systems

fixfault.com for free repair help, information and advice.

How can I fix my Halstead Ace High?

How can I fix my Bosch Greenstar?

How can I fix my Worcester 28si?

How can I fix my Halstead Hero 40?

How can I fix my Dimplex Detroit?

home Fix label Heating label_important Home Heating Systems category Vaillant

How does central heating turn itself on when timer is off?

I can answer this question...

How does central heating turn itself on when timer is off?

I can answer this question ...

How does central heating turn itself on when timer is off?

Remeha Avanta plus?

Worcester boiler dripping water?

Canon caress 2000 gas fire?

Ideal Isar H30?

BMU error code?

Reset my worcester dt10rf programmer?

Worcester Bosch 532/i Combi Boiler?

How can i mend my baxi combi 105a?