
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
£28.02
£23.35 ex. VAT · VAT at 20%
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
Compliance
| Alternative numbers | 2247053 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR HEATSLAVE II 12/18 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II 25/32 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 12/18 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 25/32 ErP | — | — | — |
Documents & drawings
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