The housing does not determine calibration
The colour of the label and the external resemblance are not enough to choose the Replacement part. Confirms the marking and version; it is not proposed to modify its setting.

Saunier Duval Isofast F35 E1 air pressure switch, reconditioned. White circular pressure switch with a green disc, upper terminals, side columns and a lower tube. Compare the specified setting, pressure ports and electrical contacts with the installed pressure switch.
Compare the full code, Ports and terminals. Two Pressure switches can share housing and have a different calibration.
Green disk, fixing columns and orientation of the Tube. 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.
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Application listed in the catalogue: Saunier Duval Isofast F35 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.
The application is listed in the catalogue and must be checked against the installed variant. Compatibility has not been confirmed against an exploded parts diagram.
The colour of the label and the external resemblance are not enough to choose the Replacement part. Confirms the marking and version; it is not proposed to modify its setting.
We repair boilers in Madrid and the surrounding areas. Installation is arranged separately from the purchase of the part.
Pressure switch circular white with green disk, upper terminals, side columns and lower Tube. Compare these details with the removed Part and its complete identification.
Green disk, fixing columns and orientation of the Tube. Compare views from the same angle and complete identification of the removed Part.
This product page identifies the catalogued application Saunier Duval Isofast F35 E1. It does not establish equivalence with other versions; service documentation linking Part to the specific model is required to extend compatibility.