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Yes that is what I mean. I assume I need a 230v relay?

Sorry I am talking about the 3 way valve actuator getting very hot. They way I have my programmes set CH is the last setting in an evening (goes off at 1030pm) and therefore the actuator stays ‘charged’ all night until the HW comes on at 0700 the next morning. I have looked at setting a short 15...

Johntheo5 - Could you expand on the use of an SPST please. My three way valve 'switch' gets very hot and I think this is why I have had to replace them every 2 to 3 years and this sounds like it may sort out this problem. Would something like this be OK...

Thank you for the answers and info. I have received an email direct from Viessmann to say the warranty would not be void by the use of softened water so my concern reacts with the rest of the system (radiators etc). I know we can bypass the softener when the system is filled so that just leaves...

Looking at having a new heat only boiler fitted but we have a water softener and finding it a minefield when it comes to boiler manufacture recommendations and warranties when using soft water. One of the fitters who has been and quoted said we would need to fit a new water pipe direct from the...

Thanks to both of you for taking the time to reply. My system uses microbore manifolds and as such I think I will give powerflushing a miss. I have removed most of the rads to clean them when we moved in (house was in a disgusting state when we moved in) and I ran a hose water jet through them...

Just moved houses and the central heating (gas, normal (not combi) boiler, microbore pipe work) is making a knocking noise through the radiators. Boiler has been regularly services, paperwork to prove. I was thinking the cause was maybe sludge and read up that microbore doesn’t like being...

Miele dryer appears to be producing steam in the drum which stops clothes drying. Some water is still being pumped into the condenser tank and water container. I have cleaned out all the fluff filters and the condenser unit. My thoughts are that the dryer if getting too hot, backed up by the...