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Ariston Cable Fan/Air Pressure Switch 999548

Ariston

Ariston Cable Fan/Air Pressure Switch 999548

Ariston 999548 wiring cable for the fan/air pressure switch circuit on Microsystem 21 RFFI and 28 RFFI boilers.

At a glance

  • Also known as 1577696
Manufacturer part no.
999548
Showing prices

£25.52

£21.27 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Ariston 999548 is a wiring cable for the fan/air pressure switch circuit, listed in the manufacturer's parts catalogue as a cable sealed chamber. It carries the pressure switch signal to the boiler control circuit on Ariston Microsystem RFFI appliances. The cable is supplied as a single wiring assembly for the sealed chamber area of the boiler.

Signs this part needs replacing

  • Boiler locks out or fails to fire with a fan or air pressure switch fault indicated
  • Intermittent ignition, or the fan runs without the boiler firing
  • Frayed, cracked or heat-damaged insulation on the cable
  • Loose, corroded or discoloured connections at the pressure switch or control board
  • The fault remains after the pressure switch itself has been tested

Before you order

  • Confirm your appliance model and edition against the fit list above
  • Check part number 999548 against the manufacturer's parts list for your boiler
  • Inspect the existing cable's connectors and routing before ordering

Not sure which part?

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