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Ariston Main Circuit Flow Switch 570604

Ariston

Ariston Main Circuit Flow Switch 570604

Ariston main circuit flow switch 570604 for Challenger 80E and Eurocombi SX20 MFFI gas boilers.

At a glance

  • Also known as 1571048
Manufacturer part no.
570604
Showing prices

£96.24

£80.20 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 Ariston main circuit flow switch (part number 570604) is a component used in Ariston gas boilers. It monitors water flow through the main circuit and signals the boiler to initiate ignition when there is a demand for heating or hot water. This switch is suitable for several Ariston Challenger and Eurocombi models.

Signs this part needs replacing

  • Boiler fails to fire when there is a demand for heating or hot water.
  • Intermittent operation, with the boiler firing only occasionally.
  • Error codes related to water flow or ignition appearing on the boiler display.
  • Pump runs but the boiler does not ignite.

Before you order

  • Check your boiler model and GC number against the compatibility list.
  • For Eurocombi SX20 MFFI CE models, confirm your boiler's serial number is 95020000 or later, or 96010000 or later as applicable.
  • Verify the part number 570604 matches the component you are replacing.
  • Consult the manufacturer's parts list if your model is not listed.

Not sure which part?

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