Honeywell PCB 45007556-004 REV B For Boiler ZW 24 AE 23
Honeywell control PCB, code 45007556-004 REV B, valid for the indicated boiler models (ZW20 KD23, ZW24 AE23/AE31, ZW24 K31, ZW24 KE23/KE31, and ZW24-2E DV AE23/AE31). The silkscreen also includes the code S4962 CM1020 0611 CZ of the transformer. It is the component that manages the operation of the boiler; it is replaced when this control fails.
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 boiler does not ignite or respond to the control.
Cause: The PCB manages the operation of the appliance; if it fails, the boiler does not respond.
Check if there is power to the boiler and if the differential switch in the house has tripped before assuming that the PCB is faulty.
- 02
The boiler keeps locking out for no apparent reason, repeatedly.
Cause: A fault in the control components of the PCB can cause safety lockouts, even if everything else is functioning properly.
Rule out issues with water pressure, flue gas, and gas supply; if the blockage recurs without visible causes, suspect the PCB.
- 03
The boiler loses power or restarts on its own intermittently.
Cause: The PCB includes the transformer that powers the control circuit; a fault can cause internal power cuts.
Check that the connections and power terminals of the PCB are properly tightened before replacing it; a loose connection can cause the same issue.
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
- 13 units
- 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.
- PCB manufacturer
- Honeywell
- PCB code
- 45007556-004 REV B
- Transformer code
- S4962 CM1020 0611 CZ
Frequently asked questions about the PCB 8708300244
Is the Honeywell 45007556-004 REV B PCB compatible with the ZW 24 AE 23 boiler?
What boiler models are compatible with the Honeywell 45007556-004 REV B PCB?
How can I verify that my PCB is reference 45007556-004 REV B?
What fault code is documented for this PCB?
Where can I find the reference for the PCB I need for my boiler?
Is the PCB compatible with the boiler ZW 24-2E DV AE 31?
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