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Mend Saunier Duval ISOMAX Home Heating Systems

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Mend Saunier Duval ISOMAX Boiler Heating Radiators

can any1 help on saunier duval combi boiler?

all radiotors work well but hot water dont.please help if u can

ben
March 2007
Saunier DuvalSaunier Duval ISOMAXHeating, Home Heating SystemsBoiler Heating Radiators
Sounds like the diaphragm, ive had my boiler for 15 years and changed it every 4-5 years plus two pumps.

Robert
April 2007
Check out what I suggested above. The hot water and heating are seperate controls. Which model is it. Apart from the new ones the principal is the same.

alan
March 2007
I have exactly the same problem. No hot water but radiators work fine. This problem occured when pressure on boiler was dropping and i had no heating. I have fixed the pressure with a new part and radiators are now ok but hot water has not returned.

Have i built in the fault and how can it be fixed?

Tom March 2007
March 2007
It is either the diaphragm,microswitch or thermistor

alan
March 2007
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Free repair help for Saunier Duval ISOMAX home heating systems