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Potterton Air Pressure Switch 5105796

Potterton

Potterton Air Pressure Switch 5105796

Potterton air pressure switch 5105796, a fan-proving safety device for Kingfisher MF boilers, also listed under 1123583.

At a glance

  • Part type: Air pressure switch
  • Also known as 1123583
Manufacturer part no.
5105796
GC number
E78-250
Showing prices

£81.96

£68.30 ex. VAT · VAT at 20%

In stock
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Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Potterton air pressure switch, part number 5105796, is a safety device used on Potterton gas boilers. It monitors the fan and confirms that air is being moved through the appliance before the boiler is allowed to fire. If the fan stops or airflow is lost, the switch keeps the boiler from running so that combustion gases cannot build up without a safe route out of the appliance.

Signs this part needs replacing

  • The boiler locks out or refuses to fire while the fan is running normally
  • Repeated lockouts on start-up, or shortly after the burner has lit
  • The fan spins but the boiler does not prove airflow and will not ignite
  • Intermittent running with nuisance lockouts that clear after a reset
  • A fault indication relating to fan operation or air pressure proving

Before you order

  • Check the GC number on the appliance data badge against the compatibility list to confirm the model
  • Confirm the switch currently fitted carries part number 5105796 or the alternative number 1123583

Not sure which part?

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