Baxi 3 Way Valve Assembly Heatmax/Platinum/Promax 7224765 

Product Overview

The Baxi Boiler 3 Way Diverter Valve (Part Number: 7224765) is a hydraulic control component designed for selected Baxi heating systems.

The diverter valve forms part of the boiler's water circulation system, directing heated water between the central heating circuit and the domestic hot water heat exchanger according to demand.

This allows the boiler to prioritise domestic hot water production when a hot water tap is opened and direct heating water towards the radiators when central heating is required.

Correct diverter valve operation is important for reliable heating and domestic hot water performance.

ℹ️ Product Condition Options:

This part may be available in New or Refurbished condition. Please select your desired option from the dropdown menu above. Refurbished components should be professionally inspected and tested to confirm correct operation and sealing integrity before installation.

Technical Insight & Common Failure Symptoms

The three-way diverter valve controls the direction of primary heating water within the boiler's hydraulic circuit. It operates in conjunction with the boiler's control system to switch between central heating and domestic hot water functions.

Over time, diverter valve performance may be affected by internal wear, mechanical sticking, contamination, deterioration of sealing components or leakage.

Possible symptoms that may indicate a diverter valve or associated hydraulic system problem include:

• Central heating operating but domestic hot water not heating correctly.

• Domestic hot water working while central heating fails to operate correctly.

• Intermittent heating or hot water operation.

• Diverter valve failing to switch between heating and hot water positions.

• Radiators becoming warm unexpectedly during domestic hot water operation.

• Valve mechanism sticking or failing to move correctly.

• Water leakage around the diverter valve body or connections.

These symptoms do not necessarily confirm a faulty diverter valve, as similar problems may result from actuator faults, electrical controls, temperature sensors or other hydraulic components. Correct professional diagnosis should be carried out before replacement.

Compatibility

This part (MPN: 7224765) is associated with selected Baxi Gold, Heatmax and related Combi HE boiler systems.

Please verify the exact boiler model, GC number, part number, valve configuration and connection arrangement against the manufacturer's technical documentation before ordering to ensure correct fitment.

Safety Advice

Boiler diverter valves and associated hydraulic components should only be inspected, removed or installed by a suitably qualified and competent heating engineer.

Always isolate the appliance's electrical supply and relevant water circuits before carrying out any work. Allow the system to cool and safely release residual pressure before removing the valve. Follow the manufacturer's servicing instructions and complete all required leakage, pressure and operational safety checks before returning the boiler to service.