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


done
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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