Honeywell PCB for Boiler ZW24 KE23 Ref. 45007556-005 REV B
Refurbished Junkers PCBs (control boards) Honeywell

Honeywell PCB for Boiler ZW24 KE23 Ref. 45007556-005 REV B

Electronic PCB manufactured by Honeywell, clearly identified on the label: code 45007556-005 REV B, batch RH 26/06 (CPC# 04). Replacement requires first confirming the fault of the part through technical diagnosis, even when the PCB fails or stops responding. Compatible with models ZW20 KD23, ZW24 AE23, ZW24 AE31, ZW24 K31, ZW24 KE23, ZW24 KE31, ZW24-2E DV AE23, and ZW24-2E DV AE31.

Type of part
PCBs (control boards)
Status
Refurbished
Catalogue reference
8708300244
Warranty
1 year
VAT included OUT OF STOCK
Compatibility

Junkers 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 modelFamilyVerification
Junkers ZW 24 AE 23Ceraclass MidiContrasted
Junkers ZW 24 AE 23 S2805Ceraclass MidiContrasted
Junkers ZW 24 AE 31 S2805Ceraclass MidiContrasted
Junkers ZW 24 KE 23 S2895Ceraclass MidiContrasted
Junkers ZW 24 KE 31 S2895Ceraclass MidiContrasted
Junkers ZW 24-2E DV AE 23 S2Ceraclass MidiContrasted
Junkers ZW 24-2E DV AE 31 S2Ceraclass MidiContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if ref. 8708300244 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

  1. 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.
  2. Check the full boiler model on its data plate and look for it in the model associations on this page.
  3. Compare the connections and physical body with the original part before installation.
  4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Diagnosis and fault codes

Symptoms that require diagnosis on the PCB 8708300244

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.

    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.

Junkers fault codes that require diagnosis

CodeFaultTechnical checks
F0Internal 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.

Technical data

Data sheet for the Junkers 8708300244 PCB.

Catalogue reference
8708300244
Uniclima internal SKU
PEJCZWE24
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.

Manufacturer
Honeywell
PCB code
45007556-005 REV B
Batch and date
RH 26/06
CPC code
CPC# 04
Frequently Asked Questions

Frequently asked questions about the PCB 8708300244

Is this Honeywell PEJCZWE24 PCB compatible with the ZW24 KE23 boiler?
Yes, this PCB is compatible with the boiler ZW24 KE23 and other models from the Ceraclass Midi range.
Which models are compatible with the Honeywell PEJCZWE24 PCB?
The compatible models are: ZW 24 AE 23, ZW 24 AE 23 S2805, ZW 24 AE 31 S2805, ZW 24 KE 23 S2895, ZW 24 KE 31 S2895, ZW 24-2E DV AE 23 S2, and ZW 24-2E DV AE 31 S2.
How can I verify that the PCB is the correct one for my boiler?
Locate the code 45007556-005 REV B and the batch RH 26/06 (CPC# 04) on the label.
What fault code is documented for this PCB?
The documented fault code for this PCB is F0.
Who manufactures the Honeywell PEJCZWE24 PCB?
The PCB is manufactured by Honeywell, according to the silkscreen on the board itself.
Are the codes 9420-179, 7648-012, and 7646-013 useful for ordering the PCB?
No, those codes are markings of internal components and do not correspond to the reference of the PCB.

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Honeywell PCB for Boiler ZW24 KE23 Ref. 45007556-005 REV B