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  1. T

    pump overrun

    Thanks again. The Boiler (burner) definitely works on the two sessions. The water heats up. If the pcb controls the pump overrun then it seems to be the problem. Why would the valve misbehave every afternoon and behave perfectly every morning?
  2. T

    pump overrun

    Thanks for your input. The boiler is a Baxi Solo 2 PF. Yes the programmer is set to switch off in the afternoon. The boiler switches off in the afternoon.
  3. T

    pump overrun

    My first post. I have an acl lifestile mid position valve 679H340 3060. This hot weather the CH is off. The HW only is set for twice a day, The pump switches off after the morning session but stays on after the PM session. This means the pump is working all night. I think the valve may be...
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