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problem with glow worm 30cxi?

got a glow worm 30cxi hot water stopped,when i ran a hot tap the central heating flow pipe got hot,so i have changed the diverter motor,hw thermister,and diverter valve,still doing the same any ideas!!!!!!!

tommy
November 2009
try to clean or replace plate heat exchanger

lee
December 2009
there is also a valve (bypass valve) between heat and hot water is it open to much it should only b open very slightly

sean
November 2009
did u change the whole diverter not just the head (motor)if u didnt change valve then its letting by

sean
November 2009
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