
PCB Junkers Bosch ZWE 24 3HKD 23 Eurostar HIT Ref. 87483002670
The Junkers Eurostar and Cerastar boilers use the Junkers Bosch PCB ZWE 24 3HKD 23 Eurostar HIT Ref. 87483002670, which acts as the brain of the system, controlling the ignition, burner modulation, pump, and safety features. If this board has faults, you will notice that the boiler does not start, locks out, or operates erratically, potentially displaying the fault code E0, which indicates an internal fault in the printed circuit. It is compatible with several models, such as the ZWE 24-3 MFKD and the ZWE 28-3 HAD, among others. A technician must confirm through diagnosis whether it needs to be replaced upon detecting these symptoms to avoid further issues.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- 87483002670
- Warranty
- 1 year
Junkers boilers compatible with reference 87483002670
PCB with reference 87483002670. Ten verified compatibilities: ZWE 24-3 MFK and ZWE 24-3 MFKD.
Verified compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWE 24-3 MFK | Junkers Eurostar / Cerastar ZWE 24-3 | Verified |
| Junkers ZWE 24-3 MFKD | Junkers Eurostar / Cerastar ZWE 24-3 | Verified |
| Junkers ZWE 24-3 MFAD | Junkers Eurostar / Cerastar ZWE 24-3 | Verified |
| Junkers ZWE 24-3 MFA | Junkers Eurostar / Cerastar ZWE 24-3 | Verified |
| Junkers ZWE 24-3 HAD | Junkers Eurostar / Cerastar ZWE 24-3 | Verified |
| Junkers ZWE 24-3 HKD | Junkers Eurostar / Cerastar ZWE 24-3 | Verified |
| Junkers ZE 24-3 MFK | Junkers Eurostar / Cerastar ZE 24-3 | Verified |
| Junkers ZE 24-3 MFA | Junkers Eurostar / Cerastar ZE 24-3 | Verified |
| Junkers ZWE 28-3 MFAD | Junkers Eurostar / Cerastar ZWE 28-3 | Verified |
| Junkers ZWE 28-3 HAD | Junkers Eurostar / Cerastar ZWE 28-3 | Verified |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. 87483002670 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 87483002670. If it is not visible, do not identify the part by its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis on the PCB 87483002670
The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler shows no signs when turned on: no display, no lights, no noise from the fan.
Cause: The PCB is not supplying power to the ignition circuits.
First, check the main fuse of the boiler and the thermal switch of the installation; rule them out before considering that the PCB is faulty.
- 02
It locks up with a fault code on startup, and that code changes every time it is restarted.
Cause: The PCB incorrectly interprets the signals and generates faults that do not correspond to a real failure.
Note the exact code during two or three consecutive resets; if it varies or disappears on its own, the PCB is more suspect than a specific component.
- 03
The room thermostat does not turn on the boiler, although the manual control of the boiler does work.
Cause: The circuit of the PCB that receives the external demand signal is not processing that input.
Do not bridge contacts or power components directly to test them. Request a technician to check the cause according to the model manual and its revision, without bypassing the protections. The symptom or fault code does not confirm on its own that this part is faulty.
- 04
It starts normally but turns off by itself after a few minutes, repeatedly.
Cause: This is typical of PCBs with solder joints or components damaged by heat, which fail when reaching the operating temperature.
Check if the cut always occurs when cold or only when the boiler has been hot for a while; the latter suggests a problem with the PCB.
Junkers fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| E0 | Internal fault in the PCB. | The self-diagnosis detects an internal fault in the main board; the manufacturer prescribes replacing the printed circuit board. Beforehand, check power supplies/connections and fuses and reset: if the E0 reappears, the PCB is defective. |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Junkers 87483002670 PCB.
- Catalogue reference
- 87483002670
- Uniclima internal SKU
- PLCEH24-3
- Brand
- Junkers
- Type of part
- PCBs (control boards)
- Units in stock
- 0 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- voltage
- 0 V




