Version and connections
The PCB's shape alone is not enough to confirm that it is a suitable replacement. The service part number and installed variant complete the identification; programming or pinout cannot be inferred from a photo.

PCB Saunier Duval Isofast F28 E1 reconditioned. Contrast the PCB code, its revision and connectors; sharing Boiler model is not enough to confirm equivalence. PCB rectangular green with Transformer red in the lower zone, orange connectors and black relays.
To identify the PCB, compare its labels and the layout of the connectors, relays and mounting points. A boiler family may include variants that need to be checked.
The red Transformer, orange connectors and relays. Compare views from the same angle and complete identification of the removed Part.
Choose a photo of your part to view it beside this unit. Compare the labels, connectors and mounting points from the same angle.
Your photo stays on your device: it is not sent or stored.

Application listed in the catalogue: Saunier Duval Isofast F28 E1. The variant and configuration must match the installed equipment; this does not establish compatibility with other models.
No models are documented for that search.
Application taken from the catalogue, pending comparison with the installed variant. This does not constitute compatibility certified against an exploded diagram.
The PCB's shape alone is not enough to confirm that it is a suitable replacement. The service part number and installed variant complete the identification; programming or pinout cannot be inferred from a photo.
We repair boilers in Madrid and the surrounding areas. Installation is arranged separately from the purchase of the part.
PCB rectangular green with red Transformer in the lower zone, orange connectors and black relays. Compare these details with the removed Part and its complete identification.
The red Transformer, orange connectors and relays. Compare views from the same angle and complete identification of the removed Part.
This product page identifies the catalogued application Saunier Duval Isofast F28 E1. It does not establish equivalence with other versions; service documentation linking Part to the specific model is required to extend compatibility.