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Vaillant ecoTec 831 I have hot water but no heating?

Please help! Our heating has suddenly stopped working. The display shows that the internal pump is running, the heating mode is active and the warmstart system is active.

No flame is showing (not sure if it is supposed to).

The radiator temperature controls are set to the correct setting.

My husband is an electrician and has just changed the thermostat so we know that is working ok.

Any ideas?

Emma
March 2013
VaillantHeating, Home Heating SystemsHelp Suddenly Working
When you say "the heating mode is active", I assume this means the radiator symbol is displayed. It therefore comes down to one thing, the diverter valve is not opening to the heating side

Carefree
March 2013

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