Honeywell PCB for Boiler ZW24 KE23 Ref. 45007556-005 REV B
PCB manufactured by Honeywell, clearly identified on the label: code 45007556-005 REV B, batch RH 26/06 (CPC# 04). It is replaced when the board fails or becomes unresponsive. Compatible with models ZW20 KD23, ZW24 AE23, ZW24 AE31, ZW24 K31, ZW24 KE23, ZW24 KE31, ZW24-2E DV AE23, and ZW24-2E DV AE31.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 8708300244
PCB with reference 8708300244. Seven confirmed compatibilities: ZW 24 AE 23 and ZW 24 AE 23 S2805.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZW 24 AE 23 | Ceraclass Midi | Contrasted |
| Junkers ZW 24 AE 23 S2805 | Ceraclass Midi | Contrasted |
| Junkers ZW 24 AE 31 S2805 | Ceraclass Midi | Contrasted |
| Junkers ZW 24 KE 23 S2895 | Ceraclass Midi | Contrasted |
| Junkers ZW 24 KE 31 S2895 | Ceraclass Midi | Contrasted |
| Junkers ZW 24-2E DV AE 23 S2 | Ceraclass Midi | Contrasted |
| Junkers ZW 24-2E DV AE 31 S2 | Ceraclass Midi | 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. 8708300244 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 8708300244. If it is not visible, do not identify the part from 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 8708300244 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 thermostat or the boiler control is not responding, as if the boiler is not hearing them.
Cause: The communication between the control and the boiler goes through the PCB; if that part fails, the commands do not reach it.
Check the bus wiring and, if possible, test a manual mode on the PCB before replacing it.
- 02
An error code appears on the display that repeats when trying to reset the boiler.
Cause: The PCB detects an abnormal reading at some point in the installation and shuts off for safety.
Before changing the PCB, check the component that indicates that fault code.
- 03
The boiler is completely dead: no lights, no display, no signs of life.
Cause: The control circuit does not start and does not send commands to the other components.
Check that power is reaching the PCB and that its internal fuse is functioning properly before replacing it.
- 04
The boiler pump does not start, or it stays on continuously.
Cause: The relay on the PCB that controls the pump may be faulty, either not cutting off or not supplying power.
Power the pump directly, bypassing the PCB, to confirm that the fault is not with the pump itself.
Fault codes from Junkers that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F0 | Internal error in the boiler's PCB (control board). | It is the only code that the technical documentation of the Ceraclass Midi directly attributes to an internal fault of the electronic module (this same part). Verification: check connections and wiring of the PCB; if it persists after ruling out wiring, the PCB is defective and should 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 8708300244 PCB.
- Catalogue reference
- 8708300244
- Brand
- Junkers
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- 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.
- Manufacturer
- Honeywell
- PCB code
- 45007556-005 REV B
- Batch and date
- RH 26/06
- CPC code
- CPC# 04
Frequently asked questions about the PCB 8708300244
Is this Honeywell PEJCZWE24 PCB compatible with the ZW24 KE23 boiler?
Which models are compatible with the Honeywell PEJCZWE24 PCB?
How can I verify that the PCB is the correct one for my boiler?
What fault code is documented for this PCB?
Who manufactures the Honeywell PEJCZWE24 PCB?
Are the codes 9420-179, 7648-012, and 7646-013 useful for ordering the PCB?
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