The Baxi 7786385 is a genuine OEM combustion control unit designed for selected Baxi 24–25 kW heat-only (regular) boilers. This electronic module manages core combustion functions including ignition sequencing, gas modulation, flame stabilisation, and safety monitoring, ensuring the boiler operates efficiently and safely at all times.

A failing combustion control unit can cause ignition faults, inconsistent burner performance, modulation issues, fluctuating heat output, or complete boiler lockouts. Replacing it with this genuine Baxi component restores correct combustion management and ensures dependable, stable system operation.

Key Features:

• Genuine Baxi combustion control PCB

• Controls ignition, combustion, modulation & burner safety

• Designed for 24/25 kW heat-only boilers

• Helps resolve ignition failures, modulation faults & burner instability

• Manufactured to strict Baxi OEM standards for reliability

• Fully tested for performance and safety compliance

• Direct-fit replacement for quick professional installation

Compatibility

The Baxi 7786385 Combustion Control Unit is compatible with:

• Selected Baxi Heat Only (Regular) 24–25 kW boilers

• Compatible appliances across the Baxi Heating Group listing 7786385 in their official parts documentation

Typical compatible categories include:

• Baxi Heat 24

• Baxi Heat 25

• Main & Potterton heat-only variants where specified

Engineers should always verify exact compatibility using the boiler’s service manual or wiring schematic.