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Worcester Bosch Overheat Thermostat Head Bank 87186905480

Worcester Bosch

Worcester Bosch Overheat Thermostat Head Bank 87186905480

Overheat thermostat head bank, Worcester Bosch part 87186905480, for Greenstar Heatslave II ErP boilers.

At a glance

  • Also known as 2247053
Manufacturer part no.
87186905480
Showing prices

£28.02

£23.35 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 overheat thermostat head bank is a Worcester Bosch safety component, supplied under part number 87186905480. It monitors boiler temperature and interrupts the burner sequence if the appliance overheats, protecting the heat exchanger and surrounding components. It is listed in the Thermostats category of Worcester Bosch gas boiler spares.

Signs this part needs replacing

  • The boiler locks out and needs resetting, particularly once the system has reached temperature
  • Repeated overheat trips during a single demand for heating or hot water
  • The appliance shuts down before the set flow temperature is reached
  • The thermostat head does not reset or does not respond when the overheat condition clears

Before you order

  • Confirm the boiler model and GC number against the appliance data badge
  • Check the existing thermostat head for the correct part number and fixing arrangement
  • Confirm whether the appliance is a standard or EXT variant of the Greenstar Heatslave II
  • Isolate the boiler electrical supply before fitting and follow the manufacturer's instructions

Not sure which part?

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