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Potterton Kit Main Switch 5118081

Potterton

Potterton Kit Main Switch 5118081

Overlevel switch kit for the condensate pump circuit on Potterton Gold 30 FSB and Promax 30 FSB boilers.

At a glance

  • Part type: kit main switch / overlevel switch
  • Also known as 1118556
Manufacturer part no.
5118081
Showing prices

£169.20

£141.00 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Potterton Kit Main Switch is an overlevel switch assembly used in the condensate pump circuit of Potterton gas boilers. It monitors the condensate level and signals the boiler to shut down when the level rises too high. It is supplied as a kit for the Potterton Gold 30 FSB and Promax 30 FSB appliance families.

Signs this part needs replacing

  • Boiler locks out or shuts down repeatedly on condensate-related faults
  • Condensate pump fails to run, or runs continuously
  • Water visible in, or overflowing from, the condensate trap
  • Switch housing shows signs of water ingress or corrosion
  • Boiler will not reset after a condensate overlevel trip

Before you order

  • Confirm your boiler model against the fit list above
  • Check the existing switch part number on the appliance
  • Isolate the electrical supply before fitting
  • Inspect the condensate pump and trap for blockages at the same time

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.