PCB Junkers Bosch Eurostar ZWE 24-3 MFAD 23 Ref. 87483002670
If your boiler does not start, locks out, or exhibits erratic behavior, you may need the Junkers Bosch Eurostar ZWE 24-3 MFAD 23 PCB (control board) Ref. 87483002670. This control board manages functions such as ignition, burner modulation, and the pump, ensuring that the boiler operates correctly. When it fails, you may notice symptoms that affect its performance. It is compatible with models such as ZWE 24-3 MFK, ZWE 24-3 MFAD, and others from the Eurostar and Cerastar ranges. It is recommended to replace it upon detecting operational issues to avoid further damage.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 87483002670
PCB with reference 87483002670. Ten verified compatibilities: ZWE 24-3 MFK and ZWE 24-3 MFKD.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWE 24-3 MFK | Junkers Eurostar / Cerastar ZWE 24-3 | Contrasted |
| Junkers ZWE 24-3 MFKD | Junkers Eurostar / Cerastar ZWE 24-3 | Contrasted |
| Junkers ZWE 24-3 MFAD | Junkers Eurostar / Cerastar ZWE 24-3 | Contrasted |
| Junkers ZWE 24-3 MFA | Junkers Eurostar / Cerastar ZWE 24-3 | Contrasted |
| Junkers ZWE 24-3 HAD | Junkers Eurostar / Cerastar ZWE 24-3 | Contrasted |
| Junkers ZWE 24-3 HKD | Junkers Eurostar / Cerastar ZWE 24-3 | Contrasted |
| Junkers ZE 24-3 MFK | Junkers Eurostar / Cerastar ZE 24-3 | Contrasted |
| Junkers ZE 24-3 MFA | Junkers Eurostar / Cerastar ZE 24-3 | Contrasted |
| Junkers ZWE 28-3 MFAD | Junkers Eurostar / Cerastar ZWE 28-3 | Contrasted |
| Junkers ZWE 28-3 HAD | Junkers Eurostar / Cerastar ZWE 28-3 | Contrasted |
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
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- 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 and faults that the PCB 87483002670 resolves.
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 displays a fault code on the screen and does not start.
Cause: The PCB detects a problem when starting up and locks the boiler for safety.
Make sure to note the exact code on the screen before purchasing: many codes point to the sensor or the pressure switch, not to the PCB.
- 02
The screen flickers or turns off by itself from time to time.
Cause: There is a problem with the internal power supply that does not maintain a stable voltage to the display.
Check that the connector from the display to the PCB is properly connected and free of rust before replacing the PCB.
- 03
The boiler does not respond when turning the temperature dial or changing the mode.
Cause: The PCB is not reading the commands correctly even though it is receiving power.
Disconnect the boiler from the power supply for one minute and then reconnect it; if the problem persists, then it could be the PCB.
- 04
A fault occurs as soon as it is turned on, without attempting to start the burner.
Cause: The PCB stops the sequence at the first step because it does not receive a correct signal.
Check the continuity of the pressure switch and the water sensor before replacing the PCB, it's the most common issue in this case.
Fault codes from Junkers that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| E0 | Internal error in the PCB | The boiler detects a fault within the main PCB. Before replacing it, check the connections, ensure it is receiving power, and verify that the fuses are intact. If the error E0 persists after resetting, the PCB is faulty and needs to be replaced. |
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
- Brand
- Junkers
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- main chip code (EEPROM/microcontroller)
- 8 744 501 1101 78
- secondary code (second line chip label)
- HTBF 0201 FD 863
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Junkers Eurostar ZE/ZWE 24-3 MFA Manual (PDF)Official installation instructions for the Junkers Eurostar ZE/ZWE 24-3 MFA boiler (doc. 6 720 604 177), in Spanish. Document provided by Uniclima as a technical reference.
Frequently asked questions about the PCB 87483002670
What is the code for the main chip on the PCB of the Eurostar ZWE24-3 MFAD 23?
Does this PCB also fit the Eurostar ZWE 28-3 HAD 23?
Does this PCB Ref. 87483002670 work for the ZE24-3 MFKD 31?
How can this PCB be distinguished from another one in the Eurostar range if there is no manufacturer logo?
Spare parts related to Junkers Junkers Eurostar / Cerastar ZWE 24-3
