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.

Reconditioned electronic board Junkers ZWBC 30-2C. Check the board code, revision and connectors; the same boiler model alone is not enough to confirm equivalence. Wide green board with a large red component, an orange relay, a transformer and white connectors.
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 component and the transformer. Compare the views from the same angle and the full 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: Junkers ZWBC 30-2C. 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 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.
The part has a wide green PCB with a large red component, orange relay, transformer and white connectors. Also check that the red component and transformer are in the same positions as on the removed unit.
Confirm the Junkers ZWBC 30-2C model on your appliance's identification label and check the red component and the transformer before ordering the spare part.