Worcester Bosch
Worcester Bosch Water Pressure Switch Kit 87161072890
Worcester Bosch water pressure switch kit, part 87161072890, for 24 SI II and 28 SI II RSF gas appliances. Monitors water pressure in the hydraulic circuit.
At a glance
- Part type: Pressure switch kit
- Appliance family: SI II RSF
- Also known as 1015145
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£128.48
£107.07 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 Worcester Bosch water pressure switch kit, part number 87161072890, is a replacement pressure-sensing component for Worcester Bosch SI II RSF gas appliances. It monitors water pressure within the appliance's hydraulic circuit and signals the control board when pressure moves outside the operating range, so the boiler can modulate or lock out as required. The kit is intended for service and repair work across the 24 SI II and 28 SI II RSF range.
Signs this part needs replacing
- The appliance locks out or fails to fire even though system pressure reads correctly on the gauge.
- Pressure readings on the gauge do not match the appliance's behaviour, or the display shows a pressure-related fault code.
- Intermittent shutdowns during a demand for heating or hot water.
- The appliance requires repeated resetting to restore normal operation.
- Erratic switching of the pressure circuit, causing the boiler to cycle on and off without a clear cause.
Before you order
- Confirm the GC number on the appliance data badge matches 47-311-65 or 47-311-67 before ordering.
- Check the part number on the existing component against 87161072890.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Pressure switch kit |
|---|---|
| Appliance family | SI II RSF |
Compliance
| Manufacturer part number (MPN) | 87161058690 |
|---|---|
| GC number | H44-823 |
| Barcode / EAN | 4010009876540 |
| Commodity code | 8536 50 80 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1015145 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER 24 SI II RSF NG | 47-311-65 | 47-311-65 | — | — |
| WORCESTER 28 SI II RSF NG | 47-311-67 | 47-311-67 | — | — |
| WORCESTER WORCESTER 24SI II RSF NATURAL GAS | — | — | — | |
| WORCESTER WORCESTER 28SI II RSF NATURAL GAS | — | — | — |
Documents & drawings
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