Worcester Bosch Flow Switch Assembly Heat Slave 87161200700

The Worcester Bosch Flow Switch Assembly, model 87161200700, is a safety component designed for Worcester heating and hot water systems. It features an in-built sensor that sits in the pipework for both central heating and domestic hot water. When the circulating pump starts, the flow switch detects movement and sends signals to the system’s printed circuit board, enabling the ignition sequence to progress. Its primary function is to prevent the burner from firing if the system is low on water or otherwise dry, helping to protect the appliance and maintain dependable operation.

This genuine Worcester part is associated with Worcester Heat Slave configurations, including HEATSLAVE 20/25 OSO and 20/25 RSO. It is sold as a brand-new component and is covered by a manufacturer’s guarantee. The flow switch is designed to detect and manage system activation or flow changes, supporting correct operation and long-term durability of compatible heating and hot water systems.

Features

• Model 87161200700 flow switch assembly
• Safety device with in-built sensor
• Sits in central heating and domestic hot water pipes
• Feeds data to the PCB to progress ignition
• Prevents burner firing when water is low or dry