Worcester Greenstar Compact PCB – Refurbished | Part No. 873790949A0 (No Relay)

Repeated boiler lockouts, ignition failure, or unresponsive controls on a Worcester Greenstar Compact model — whether Combi or System — typically indicate a failing PCB. The Worcester Greenstar Compact PCB 873790949A0 (No Relay) is the direct refurbished replacement, covering the complete Compact range including CDI, Si, i System, and ErP variants across 28kW, 30kW, 32kW, 35kW, and 36kW outputs.

This refurbished unit is taken from a fully functioning boiler and quality-checked by our experienced engineering team to the highest standard before dispatch. Minor cosmetic marks may be present, but all functional performance is confirmed. Available for both Combi and System boiler types — please select the correct boiler type when ordering. Supplied with a full 12-month warranty.

Compatible Boiler Models

Quality-Checked. Reliable. 12-Month Warranty.

Every refurbished Worcester PCB we supply is quality-checked to the highest standard by our experienced engineering team before dispatch, confirming correct electronic function across ignition, heating control, and safety monitoring. Backed by a full 12-month warranty.

Delivery & Returns

Orders placed before 1:00 PM (Mon–Fri) are dispatched the same working day. Standard and next-day delivery available at checkout, including Saturday delivery for an additional charge. Returns accepted within 30 days in original unused condition.

Note: Please confirm that part number 873790949A0 matches your existing PCB, select the correct boiler type (Combi or System), and check your boiler's GC number before ordering. Installation must be carried out by a Gas Safe registered engineer.