Description

Ideal 179855 Primary PCB KM821 I1 Kit – Fits Atlantic, Classic, Exclusive & Morco Boilers

The Keston / Ideal 179855 Primary PCB KM821 I1 Kit is a genuine OEM replacement printed circuit board designed to control and regulate your boiler’s electronic functions. As a vital component, the PCB ensures correct boiler operation, combustion control, and system safety.

This part is also listed as the Ideal 179855 Primary PCB KM721 I1, confirming its compatibility across both Keston and Ideal appliances. Trusted by professional heating engineers, this PCB replacement offers full reliability, safety, and long service life.

Compatible Boilers & GC Numbers

• Atlantic Combi

  • Atlantic Combi 24 – GC No. 47-349-81

  • Atlantic Combi 30 – GC No. 47-349-82

  • Atlantic Combi 35 – GC No. 47-349-83

• Classic 2 Combi

  • Classic 2 Combi 24 – GC No. 47-349-71

  • Classic 2 Combi 30 – GC No. 47-349-72

  • Classic 2 Combi 35 – GC No. 47-349-73

• Exclusive 2 Combi

  • Exclusive 2 24 Combi – GC No. 47-349-62

  • Exclusive 2 30 Combi – GC No. 47-349-63

  • Exclusive 2 35 Combi – GC No. 47-349-64

• I Combi 2 Series

  • I Combi 2 24 – GC No. 47-349-74

  • I Combi 2 30 – GC No. 47-349-75

  • I Combi 2 35 – GC No. 47-349-76

• Morco Boilers

  • Ideal Morco GB24 LPG – (Series 111)

  • Ideal Morco GB30 LPG – (Series 111)

  • Morco GB24 – Series 111

  • Morco GB30 – Series 111

  • Why Choose the Keston / Ideal 179855 PCB?

    • Genuine OEM PCB replacement kit

    • Listed as KM821 I1 Kit and KM721 I1 Kit for compatibility

    • Compatible with multiple Keston, Ideal, and Morco boilers

    • Ensures safe and reliable electronic control of your boiler

    • Trusted by engineers across the UK

    • Same-day dispatch (before 1pm) & fast UK delivery

    • Backed by warranty and 30-day returns