DIY Doctor


Postby jaapdog » Sat Oct 25, 2008 5:30 pm

raven heat combi system CSI 85 approx 2 years old,hot water but no heating,[on hot water only, sometimes the radiators would heat up??] the 3 way valve was leaking i replaced the diaphram cured leak, noticed the small printed circuit board burnt replaced it .still no heating only hot water. the feed pipe to the radiators cold but short pipe from3 way valve to radiator feed pipe quite warm ,return pipe from radiators cold until last short section to pump hot? THOUGHT PUMP US. REPLACED still the same problem HELP
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