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update. ok, Ive narrowed this down a bit. whilst the boiler ( pump/ fan) was continuing to run despite it not being fired up i turned the water channel off after i heard the TRV from my megaflow tank close. it obviously closed because the internal stat had reached temperature. after...

I think it will only let you skip the licence key if that machine and same hardware has already been successfully registered before. probably too late now but when you run task manager you could have selected the start-up tab and it would have listed all the programmes which were...

it is an Edwardian house with high ceilings and solid walls I'm pretty sure this cycling condition was going on even during the recent very cold spell but from your interesting explanation it might be that as you have said the boiler had been over specified so its struggling to...

thanks for your reply i haven't noticed it overshooting the temperature which has been set and there are no overhesting errors either.As a trouble shooting step i turned the temperature up but that resulted in the same cycle of heating cooling and heating but obviously heated up to the...

thanks. yes itsa 4 bed semi rads in 2 unused rooms have been turned off but I'm getting the cycling issue even when there is a call for heat on the CH, HW and underfloor heating in a downstairs zone so I'd be surprised if that level of demand was not enough to prevent it from cooing...

got a couple of strange issues going on and wanted some advice. firstly there are no errors codes and the boiler does seem to be operating in that I'm getting HW and CH but i have noticed that it seems to be in a cycle where it will begin heating then cooling then heating back up. so...