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Mend Saunier Duval Ecomax 835 Home Heating Systems

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Mend Saunier Duval Ecomax 835 Boiler Error Code Heating

how to fix valance 835 boiler ecomax?

Error code f.25 and f28 are coming up. When power is switched on the temp rises to max 100degrees and then goes back down (when nothing is in use). When hot water is turned on, the temp again rises to 100degrees (very hot) even when the thermo is set on lowest setting and then the temp drops down to cold and then the boilers ignitions kicks in and temp goes back up (a bit like a yo-yo). Central heating dosnt heat up. Can any one help? sagsta_1 yahoo.co.uk

Sagheer
May 2010
Saunier DuvalSaunier Duval Ecomax 835Heating, Home Heating SystemsBoiler Error Code Heating
is there any way of testing the pump?

SAGHEER
May 2010
sounds like the pump isn't running

Ian
May 2010

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