Potterton Wiring Harness Condensate Pump 5117478

This is the condensate pump wiring harness supplied by Potterton under part number 5117478. It is the electrical lead that connects the condensate pump to the boiler's control circuit on Potterton Gold FSB and Promax FSB appliances. The harness carries the supply and signal connections required for the pump to run and for the boiler to monitor its operation.

• The condensate pump does not run, even though the pump itself tests as serviceable
• Intermittent pump operation or a pump that cuts in and out without a fault in the pump body
• Boiler locks out or reports a condensate-related fault that clears when the harness is disturbed
• Visible damage to the lead: chafed insulation, scorching, corrosion or a loose crimp at the pump plug
• Continuity cannot be confirmed through one or more conductors of the harness

• Confirm the boiler model against the fitment list above, as the harness is specific to these FSB appliances
• Check the existing harness part number or the manufacturer's parts list for your appliance before ordering
• Inspect the pump connector and control board plug for damage, as a poor connection can mimic a failed harness
• Verify that the fault lies with the harness rather than the condensate pump itself