Ferroli Sigma Honeywell W4115A1012 PCB 39818330 3831887/0 38318870 806887 *NEW*

MAIN CONTROL PCB – Replacement main printed circuit board compatible with Ferroli Sigma boilers, identified by part number 39818330. Suitable for replacing a matching main control board following professional fault diagnosis. BOARD & PART REFERENCES – Compatible with Honeywell W4115A1002. Related part references include 38318870, 3831887/0 and 806887. Check the complete reference on your existing PCB before ordering. BOILER COMPATIBILITY – Compatible with Ferroli Sigma 20–40, 30–40, 40–60, 50–60 and 60–100 boilers. Confirm the exact boiler model and matching PCB reference to select the correct replacement. GC NUMBER IDENTIFICATION – Sigma 20–40: 41-267-17; Sigma 40–60: 41-267-18; Sigma 60–100: 41-267-19. Check your boiler’s data plate to confirm its GC number and model before purchase. PROFESSIONAL INSTALLATION – Diagnosis, installation and commissioning should be carried out by a suitably qualified Gas Safe registered engineer in accordance with the boiler manufacturer’s instructions.