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- 25 Feb 2007
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No Tony, definitely pushes in to engage the HW, when the motor is removed it allows the mechanical valve pin to come out and disconnect supply to the secondary HE. If the valve pin is then pushed in manually with a screwdriver ect you can hear the water flow around the HE and start to get hot. You were right in the sense that the normal position for the motorised valve is pushing out therefore boiler with the motor fitted does remain in HW mode normally but once removed it definitely goes into CH only.