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 Junkers ZWR24-2ADE23 S0404 re-conditioned. Electronic circuit with blue Block, two transparent relays and white connectors; check their fixation points and the position of the grids. Visible marking in PCB: JUNKERS; 8 748 300 034. Contrast the PCB code, its revision and the connectors; sharing Boiler model is not enough to confirm equivalence.
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.
Compare the views from the same angle and check the 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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Catalogue listing: Junkers ZWR24-2ADE23 S0404. The part must match the installed appliance’s variant and configuration. The catalogue entry does not establish compatibility with other models.
No models are documented for that search.
The application is listed in the catalogue. 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.
Electronic circuit with blue Block, two transparent relays and white connectors; check their fixation points and the position of the grids. Compare these details with the removed Part and its complete identification.
Visible marking in PCB: JUNKERS; 8 748 300 034. These are readings from the photographed unit and not an equivalent list of references.
This product page identifies the catalogued application Junkers ZWR24-2ADE23 S0404. It does not establish equivalence with other versions; service documentation linking Part to the specific model is required to extend compatibility.