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Ariston High Limit Thermostat 564244

Ariston

Ariston High Limit Thermostat 564244

High limit thermostat, part 564244, for the Ariston STYX SX 20 M gas boiler from serial number 92010000.

At a glance

  • Also known as 1572262
Manufacturer part no.
564244
Showing prices

£22.74

£18.95 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 564244 is a high limit thermostat, designated 105, used in Ariston gas boilers. It monitors boiler temperature and interrupts the burner circuit or locks out the appliance if the set limit is exceeded, protecting the boiler from overheating. It is listed for the Ariston STYX SX 20 M from serial number 92010000.

Signs this part needs replacing

  • Boiler locks out and needs a manual reset, especially after running hot.
  • Repeated overheat lockouts during heating or hot water demand.
  • Boiler shuts down before reaching the set flow temperature.
  • Thermostat does not open or close its circuit when tested.

Before you order

  • Confirm the appliance is an Ariston STYX SX 20 M.
  • Check the boiler serial number is 92010000 or later.
  • Compare the part number on the existing thermostat with 564244.

Not sure which part?

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