Grandee Flow Switch Gb10001 Wallhung Combi

Wall hung Combi Flow Switch

The Grandee Flow Switch GB10001 is a genuine replacement flow detection unit designed for Grandee wall-hung combi boilers. This flow switch monitors water movement through the system and signals the boiler to fire when a hot water or heating demand is detected.

Built to OEM specifications, the GB10001 provides accurate flow sensing, helping maintain reliable ignition, stable boiler operation, and correct modulation during hot water draw-off. It is an essential component for ensuring consistent performance in Grandee combi systems.

Key Features

• Genuine Grandee flow switch – Part No. GB10001

• Designed specifically for Grandee wall-hung combi boilers

• Detects system water flow to enable burner ignition

• Ensures reliable hot water and heating response

• Durable construction for long-term operation

• Helps prevent false lockouts and ignition failures

• Easy to replace during servicing or repair

Compatibility

• Suitable for Grandee wall-hung combi boiler models

• Direct replacement for GB10001

• Fits both heating and domestic hot water flow circuits in compatible appliances

When to Replace

• If hot water does not trigger the boiler

• When the boiler shows intermittent firing or no ignition

• If flow detection is inconsistent or faulty

• During routine boiler servicing where the flow switch shows wear

Technical Specifications

• Part Number: GB10001

• Component Type: Flow switch sensor

• Application: Grandee wall-hung combi boilers

• Function: Detects flow to activate heating/hot water demand

• Construction: High-durability plastic and brass components