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Glow-worm Overheat Thermostat GLOWWORM2000801232

Glow-worm

Glow-worm Overheat Thermostat GLOWWORM2000801232

At a glance

  • Part type: Overheat thermostat (high limit safety cut-out)
  • Also known as GLOWWORM2000801232
Manufacturer part no.
2000801232
GC number
E57-911
Showing prices

£41.16

£34.30 ex. VAT · VAT at 20%

In stock
Order within 14h 49m for same-day dispatch
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Glow-worm overheat thermostat, part number 2000801232, is a high limit safety cut-out used in Glow-worm boilers. It sits in the boiler's temperature control chain and interrupts the burner circuit when the appliance exceeds its safe operating limit. Its job is to stop the boiler running on after a fault and to protect the heat exchanger and surrounding components from overheating damage.

Signs this part needs replacing

  • The boiler locks out or shuts down once it reaches temperature and requires a manual reset.
  • Repeated overheat trips occur with no obvious fault in the water circuit.
  • There is no heating or hot water after resetting the boiler.
  • The burner cuts out early during a demand cycle, before the setpoint is reached.
  • A fault code or lockout indication points to the overheat or limit thermostat.

Before you order

  • Confirm the boiler model and GC number, and match part number 2000801232 against the component being replaced.
  • Isolate the appliance and allow it to cool fully before removing the thermostat.

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.