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Ariston Flow Group 998612

Ariston

Ariston Flow Group 998612

Ariston flow group 998612, a flow switch component for Microcombi, Microsystem, Microtec, R2 and EST gas boilers.

At a glance

  • Also known as 1577178
Manufacturer part no.
998612
Showing prices

£104.35

£86.96 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 Flow Group (part number 998612) is a flow switch component used in Ariston gas boilers. It monitors water flow to enable boiler operation on hot water demand. This part is listed for a range of Ariston Microcombi, Microsystem, Microtec, R2 and EST appliances.

Signs this part needs replacing

  • Boiler does not fire when a hot water tap is opened.
  • Domestic hot water runs intermittently or only at certain flow rates.
  • No hot water demand is detected by the boiler.
  • Flow switch fails to activate during DHW draw-off.
  • Boiler does not switch from heating to hot water mode.

Before you order

  • Confirm the appliance model and serial number against the compatibility list.
  • Check the GC number where shown on the boiler data badge.
  • Verify the existing part number is 998612 before ordering.
  • Ensure the boiler is an Ariston gas boiler from the listed ranges.

Not sure which part?

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