Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hamworthy Limit Thermostat 573405253

Hamworthy

Hamworthy Limit Thermostat 573405253

Limit thermostat 573405253 for Hamworthy Lilliput HE40, HE65 and HE90 floor standing gas boilers.

At a glance

  • Part type: limit thermostat
  • Appliance family: Lilliput floor standing
  • Also known as 2063270
Manufacturer part no.
573405253
Showing prices

£51.11

£42.59 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 Hamworthy 573405253 is a limit thermostat used on Hamworthy Lilliput floor standing gas boilers. It monitors boiler temperature and interrupts the burner circuit when the set limit is exceeded, protecting the appliance from overheating. It is a safety-related control within the boiler's thermostat range.

Signs this part needs replacing

  • The boiler locks out or shuts down before reaching the set temperature
  • Repeated overheat trips that need manual resetting
  • No heating or hot water because the burner circuit is held open
  • The boiler fires briefly and then cuts out
  • A fault code indicating an overheat or limit thermostat trip

Before you order

  • Confirm the appliance is a Hamworthy Lilliput HE40, HE65 or HE90 floor standing boiler
  • Check the part number on the existing thermostat against 573405253
  • Isolate the electrical supply before removing or fitting the thermostat
  • Verify the fault lies with the limit thermostat and not another safety device

Not sure which part?

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