Identification of this unit
Set the number of relays mounted, the connector positions, the Circuit cuts and the complete labels on both sides. Keep the PCB identification removed and the complete Boiler model to see its cutting.

PCB Saunier Duval Isotwin F28-EA re-conditioned. The photo unit has the SYMSI7.0 screen printing, three installed relays and a Fuse for Cartridge glass. Compare its configuration with the PCB removed from your Boiler before choosing the Replacement part.
The PCB coordinates functions of the equipment through its inputs, outputs and circuits of Control. To choose a Replacement part, it is interesting to identify the complete revision and how it connects to the Boiler, in addition to the commercial name.
In this unit there are three black relays mounted and a fourth position without relay. That distribution helps to distinguish it from other cards on the same platform. SYMSI7.0 is the screen printing of the Circuit: by itself it does not identify all revisions nor does it prove that any PCB with that marking is interchangeable.
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.

This tab is catalogued for Saunier Duval Isotwin F28-EA. The photo unit is visually identified by SYMSI7.0 and three installed relays. Before replacing it, it contrasts the service reference and configuration with the cutting of the exact variant of your Boiler.
No models are documented for that search.
The model shown comes from the identification of this sheet. It does not constitute a list of other compatible Boilerss nor does it prove equivalence with all SYMSI7.0 revisions.
Set the number of relays mounted, the connector positions, the Circuit cuts and the complete labels on both sides. Keep the PCB identification removed and the complete Boiler model to see its cutting.
A Boiler that does not boot may have a power problem, sensors or other components. The diagnosis must precede the replacement of the Control board.
We repair boilers in Madrid and the surrounding areas. Installation is arranged separately from the purchase of the part.
No. The applicable reference, revision and configuration provided by the manufacturer for the equipment must also coincide. The appearance and connectors help to rule out differences, but do not replace that identification.
It is the visible screen printing on the impreso circuit. It serves to recognize the electronic platform, but does not replace the service reference nor confirms compatibility with all Boilerss that use cards of similar appearance.
Three black relays installed and a fourth position without relay are observed. Compare this configuration to the original unit; equivalence with four relay versions is not assumed.