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Ideal Flow Switch and Filter 172502

Ideal

Ideal Flow Switch and Filter 172502

Ideal magnetic flow switch and filter, part 172502, for mini and Europa boilers; senses water flow and signals the PCB to prevent dry firing.

At a glance

  • Part type: Flow switch (magnetic flow switch and filter)
  • Also known as 1178848, N1923
Manufacturer part no.
172502
GC number
E83-081
Showing prices

£72.84

£60.70 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 Ideal magnetic flow switch and filter, part number 172502, is a combined flow-sensing device and magnetic filter used on Ideal mini and Europa boilers. The flow switch, also known as a flow meter, contains an internal sensor that sits within the heating or hot water pipework. It monitors water flow and feeds that information back to the boiler's printed circuit board (PCB), acting as a safety mechanism so the burner is not activated when the system is low on water or running dry.

Signs this part needs replacing

  • The boiler fails to fire or repeatedly locks out when there is a call for heating or hot water.
  • The burner does not ignite when the system is low on water.
  • Ignition is intermittent, with the boiler cutting in and out during a demand.
  • No heating or hot water is produced while the pump is running.
  • Flow-related fault codes are logged by the PCB.

Before you order

  • Check the GC number on the appliance data badge against the GC numbers listed for this part.
  • Confirm the boiler model and serial number against the compatibility list before ordering.
  • Isolate the appliance and follow the manufacturer's instructions when fitting the replacement.

Not sure which part?

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