Honeywell PCB for Junkers Ceraclass Midi ZW24 AE23 S2805 - Ref. 8708300244
RefurbishedBosch JunkersPCBs (control boards)Honeywell

Honeywell PCB for Junkers Ceraclass Midi ZW24 AE23 S2805 - Ref. 8708300244

VAT includedStock · 3 units

The Honeywell PCB for Junkers Ceraclass Midi ZW24 AE23 S2805 is the component that controls the ignition, burner modulation, pump, and safety features of the boiler. If it fails, you will notice that the boiler does not start, locks out, or behaves erratically. This board is compatible with several models in the Ceraclass Midi range, such as the ZW 24 AE 23 and ZW 24-2E DV AE 23 S2, among others. A technician must confirm through diagnosis whether it needs to be replaced when experiencing the mentioned symptoms or when receiving the fault code F0.

Compatibility

Bosch 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
Bosch Junkers ZW 24 AE 23Ceraclass MidiContrasted
Bosch Junkers ZW 24 AE 23 S2805Ceraclass MidiContrasted
Bosch Junkers ZW 24 AE 31 S2805Ceraclass MidiContrasted
Bosch Junkers ZW 24 KE 23 S2895Ceraclass MidiContrasted
Bosch Junkers ZW 24 KE 31 S2895Ceraclass MidiContrasted
Bosch Junkers ZW 24-2E DV AE 23 S2Ceraclass MidiContrasted
Bosch 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 boiler does not start and the display remains completely off.

    Cause: If the PCB does not distribute voltage, neither the display nor the rest of the electronics receive power.

    Check the fuse on the PCB and measure the input voltage before replacing it.

  • 02

    The heating does not heat, but the domestic hot water does work, or vice versa.

    Cause: The PCB manages the heating and domestic hot water circuits separately; a fault in one of its outputs can leave only one of the two services active.

    Check that the valves and pumps of each circuit receive voltage at their terminals before blaming the PCB.

  • 03

    A fault code related to the transformer or power supply is triggered.

    Cause: This PCB features an internal transformer of 200 VA; if its winding or power supply stage fails, the system detects it and locks out.

    Measure the output voltage of the transformer with a multimeter before declaring the PCB as damaged.

  • 04

    The boiler turns on by itself sporadically without any demand for heating.

    Cause: A relay on the PCB that does not close properly can activate the burner or the pump without a real command from the thermostat.

    Disconnect the thermostat and observe if the spontaneous ignition continues to occur, to locate the fault in the PCB.

Bosch 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 Bosch Junkers PCB 8708300244

Catalogue reference
8708300244
Uniclima internal SKU
PLBO070
Brand
Bosch Junkers
Type of part
PCBs (control boards)
Units in stock
3 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.

Component manufacturer
Honeywell
Transformer power
200 VA
Documentation

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

Frequently Asked Questions

Frequently asked questions about the PCB 8708300244

Who manufactures the PCB of the Junkers Ceraclass Midi ZW24 AE23 S2805?
Honeywell; the logo is printed with total clarity on the PCB.
What transformer does the PCB of the ZW24 KE31 S2895 use?
An internal transformer of 200 VA, information readable on the control board itself.
For which Junkers Ceraclass Midi models is this Honeywell PCB compatible?
For several models in the ZW24 range, including ZW24 AE23 S2805, ZW24 AE31 S2805, and ZW24 KE31 S2895.

Spare parts related to Bosch Junkers Ceraclass Midi

Entrega calculada por destinoDelivery time shown at checkout
1-year warrantyreviewed and tested
14-day returnuninstalled parts
Technical supportwe verify your model
Honeywell PCB for Junkers Ceraclass Midi ZW24 AE23 S2805 - Ref. 8708300244