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Mend Optima 901 Combi Boiler Heating Hot Water

How can i fix my optima 901 combi boiler??

I have hot water, but no heating. The pump and fan are both running, but the burner seems to come on and automatically switch off without reaching full temperature.
Regards
cold household!!!!

Jenny
November 2005
OptimaOptima 901Heating, Home Heating SystemsCombi Boiler Heating Hot Water
I had the same problem and changed the hot and cold water senors. After that it works fine.

Yogi
March 2006

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