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Potterton Air Pressure Switch 5105574

Potterton

Potterton Air Pressure Switch 5105574

Air pressure switch for Potterton Suprima L series boilers, manufacturer part number 5105574.

At a glance

  • Also known as 1123553, N7694
  • Installation should be carried out by a Gas Safe registered engineer
Manufacturer part no.
5105574
GC number
E78-478
Showing prices

£81.96

£68.30 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

This is an air pressure switch for Potterton Suprima L series boilers. It is manufactured by Potterton under part number 5105574 and carries the Honeywell reference C4065FH1008:2. The switch monitors air pressure to ensure safe operation of the boiler's combustion system.

Signs this part needs replacing

  • Boiler fails to ignite
  • Repeated lockouts
  • Fan runs but burner does not fire
  • Intermittent heating or hot water

Before you order

  • Check your boiler model and GC number against the fitment list
  • Confirm the part number 5105574 matches your existing switch
  • Ensure the Honeywell reference C4065FH1008:2 is compatible
  • Installation should be carried out by a Gas Safe registered engineer

Not sure which part?

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