Grant Microswitch/ Flow Switch Assy Combi Mpcbs41 Bs40011

Boulter Economy Suitable for Grant Combi V3 and Grant Combi MK11

Grant Microswitch / Flow Switch Assembly – Combi MPCBS41 (Part No. BS40011)
Essential Component for Reliable Hot Water Demand Detection

Product Summary

The Grant Microswitch / Flow Switch Assembly MPCBS41 (BS40011) is a genuine Grant spare part designed to detect water flow in Grant Vortex Pro Combi boilers. This assembly plays a critical role in triggering boiler ignition when there is a hot water demand, ensuring reliable domestic hot water supply at all times.

Ideal for use in routine maintenance or when diagnosing inconsistent hot water issues, this flow switch assembly helps restore your boiler's responsiveness and efficiency.

Key Features

• Genuine Grant OEM component for assured compatibility and durability

• Activates burner in response to domestic hot water flow

• Pre-wired assembly for quick and easy installation

• Helps prevent intermittent hot water faults

• Supplied as a complete assembly, including microswitch and flow mechanism

• Improves overall system reliability and responsiveness

Compatible Boiler Models

Specifically designed for:

• Grant Vortex Pro Combi 21

• Grant Vortex Pro Combi 26

• Grant Vortex Pro Combi 36

Check your boiler model and part manual to ensure compatibility. If in doubt, contact us for expert advice.

When to Replace

• Boiler fails to fire during hot water demand

• Microswitch is stuck, corroded, or unresponsive

• Flow switch intermittently triggers or doesn’t register water flow

• As part of routine service replacement or fault diagnosis

Technical Specifications

• Part Number: MPCBS41 / BS40011

• Type: Flow switch and microswitch combination

• Function: Signals PCB when domestic hot water is required

• Installation: Direct-fit for Grant Vortex Pro Combi models

• Manufacturer: Grant Engineering