Recent content by oldengineersneverdie

Just an update following some more checks this evening after advice received on Forum ......... Removed electric motor -actuator from end of diverter valve and managed to use small pair of pointed nose pliers to pull main valve rod outwards about 7mm~10mm. Made a 'clonk' and hey-presto, CH...

I'll try moving the rod in the actual valve this evening when get home from work - should the actuator rod sticking out of the motor drive unit be attached to the actual valve part or does it just push against it and the actual valve be returned by an internal spring? I noted the actuator rod...

Thanks Mick - do you know if the Turbomax plus 828 has a filter in its system anywhere - can't see any reference in the manual. Could a sticking diverter valve - stuck at HW maybe - cause the CH burner to cut off after 12 secs because the water heats quickly and just circulates around in the...

Hope someone can help ! Am not a heating engineer but am a reasonably capable engineer & OK with checking & adjusting this sort of stuff if have relevant info or advice to hand! Vaillant Turbomax plus 828E, approx 2002 vintage. CH not working, HW OK. System pressure 1.6 ~ 1.7 bar Room...