Keston / Ideal Primary PCB KM821 I1 Kit – Genuine New | Part No. 179855

Ignition failures, no-power faults, and boiler lockout in Ideal Atlantic, Classic 2, Exclusive 2, or I Combi 2 boilers are all symptoms that typically originate at the primary PCB. The control board is the central intelligence of the boiler — when it fails, no other component can operate correctly. The Keston / Ideal Primary PCB KM821 I1 Kit (Part No. 179855) is the correct genuine new replacement, also referenced as KM721 I1, covering the Ideal Atlantic, Classic 2, Exclusive 2, and I Combi 2 combi ranges, as well as selected Morco LPG models.

This is a genuine new Keston / Ideal component — not refurbished. Supplied as the complete PCB kit as required for a correct installation. SKU: IDL-PCB-9855-N. Supplied with a full 12-month warranty.

Compatible Ideal / Keston / Morco Models

Genuine New Part. 12-Month Warranty.

Supplied as a brand-new genuine Keston / Ideal component — fully tested and warranted. This 179855 PCB kit restores complete boiler control across the Ideal Atlantic, Classic 2, Exclusive 2, and I Combi 2 ranges. Supplied with a full 12-month warranty.

Delivery & Returns

Orders placed before 3:00 PM are dispatched the same working day. Standard and next-day delivery available at checkout. Returns accepted within 30 days in original unused condition.

Note: Please confirm that part number 179855 (KM821 I1 / KM721 I1) matches your existing PCB before ordering. Installation must be carried out by a Gas Safe registered engineer.

Product Reference