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potterton promax he 30 plus?

Have a problem with the above.
1 the redlight keeps flashing so you have to reset
keeps on overheating.
2 the radiators are hot even though radiators are off.
this has been going on for a long time
any help would be welcome thanks

fedup with potterton
December 2010
Diverter valve issue initially, if the rads are hot when not required.
Until that is resolved, can't guess any further

fed up with whiners
December 2010
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Free repair help for Potterton home heating systems