I was watching a video on TRV repairs and it seemed to suggest that when the Heating system is switched off for the season all the manual TRVs should be rotated to the open position. This is to stop them ceasing in the closed position.
However with Evohome when you click Heating Off, all the TRVs go to the closed position and stay there. Do the HRxx valves have any sort of pin cease safety that basically operates the TRV pin at regular intervals to avoid them ceasing but in doing so doesn't generate a Heat Demand that fires the boiler.
I know the new firmware does not resend the Heating Off command at regular intervals. So any HRxx that has been manually turned up will open the TRV but won't fire the boiler. So is this what we should be doing? I.e. Click Heating Off at the controller and then go round and turn all the HRxx valves to Full? Problem is that in my system if I did this then my radiators would get hot when the HW kicks in.
However with Evohome when you click Heating Off, all the TRVs go to the closed position and stay there. Do the HRxx valves have any sort of pin cease safety that basically operates the TRV pin at regular intervals to avoid them ceasing but in doing so doesn't generate a Heat Demand that fires the boiler.
I know the new firmware does not resend the Heating Off command at regular intervals. So any HRxx that has been manually turned up will open the TRV but won't fire the boiler. So is this what we should be doing? I.e. Click Heating Off at the controller and then go round and turn all the HRxx valves to Full? Problem is that in my system if I did this then my radiators would get hot when the HW kicks in.
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