![Wiring help or diagnosis. Our boiler pump does not turn off. Boiler:Potterton Promax SL. HW Zone valve was replaced, so that may be suspect area?. Additional issue is that CH doesn't turn Wiring help or diagnosis. Our boiler pump does not turn off. Boiler:Potterton Promax SL. HW Zone valve was replaced, so that may be suspect area?. Additional issue is that CH doesn't turn](https://i.redd.it/m4blqaj68sr61.jpg)
Wiring help or diagnosis. Our boiler pump does not turn off. Boiler:Potterton Promax SL. HW Zone valve was replaced, so that may be suspect area?. Additional issue is that CH doesn't turn
![Central Heating Wiring Diagrams - Drayton Controls - Biflo with LWC3 Wiring Centre and Pump Overrun Boiler - Gas Support Services Central Heating Wiring Diagrams - Drayton Controls - Biflo with LWC3 Wiring Centre and Pump Overrun Boiler - Gas Support Services](https://www.gassupportservices.co.uk/wp-content/uploads/2016/02/Biflo-with-LWC3-Wiring-Centre-and-Pump-Overrun-Boiler.png)
Central Heating Wiring Diagrams - Drayton Controls - Biflo with LWC3 Wiring Centre and Pump Overrun Boiler - Gas Support Services
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