Honeywell PCB for NECKAR NW24 Boiler and Compatible Models
When you turn on the hot water tap or activate the heating, the Honeywell PCB for the NECKAR NW24 boiler is responsible for controlling the ignition, the modulation of the burner, and the safety features of the boiler. If this part fails, you will notice that the boiler does not start, gets locked, or exhibits erratic behavior. You may observe symptoms such as the reset button flashing at 0.5 Hz or 4 Hz, indicating issues with ionization or safety control. This PCB is compatible with several models from the Junkers Euroline range, among others. It should be replaced when these operational faults are detected.
VAT included
Consult via WhatsAppNeckar boilers compatible with reference 87083002120
PCB with reference 87083002120. 22 verified compatibilities: ZW23-1AE23 and ZW23-1AE31.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Neckar ZW23-1AE23 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW23-1AE31 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW23-1KE23 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW23-1KE31 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW24-1ELH AE23 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW24-1ELH AE31 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW28-1LHKE23 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW28-1LHKE31 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW30-1LHAE23 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZW30-1LHAE31 | Junkers Euroline ZW (combi) | Contrasted |
| Neckar ZS23-1AE23 | Junkers Euroline ZS (heating only) | Contrasted |
| Neckar ZS23-1AE31 | Junkers Euroline ZS (heating only) | Contrasted |
| Neckar ZS23-1KE23 | Junkers Euroline ZS (heating only) | Contrasted |
| Neckar ZS23-1KE31 | Junkers Euroline ZS (heating only) | Contrasted |
| Neckar NW24-1LHAE23 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24-1LHAE31 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24-1LHKE23 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24-1LHKE31 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24/28-1LHKE23 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24/28-1LHKE31 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24/30-1LHAE23 | Junkers Euroline NW24 | Contrasted |
| Neckar NW24/30-1LHAE31 | Junkers Euroline NW24 | 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. 87083002120 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 87083002120. 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 87083002120 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 turn on: there are no lights or display, as if it is not receiving power.
Cause: The PCB distributes power to the other components; if it fails, nothing starts.
Measure with a multimeter that 230V is reaching the input of the PCB before discarding it.
- 02
The burner stops abruptly in the middle of a cycle and does not attempt to restart.
Cause: A fault in the control electronics can interrupt the ignition command even if the other components are functioning properly.
Note the fault code displayed just before the shutdown, and indicate whether it is the PCB or another component.
- 03
The remote control or the panel does not respond to any button, even though the boiler is powered.
Cause: The PCB manages communication with the control; if the circuit fails, that dialogue is lost.
Check that the bus cable between the control and the PCB is properly connected and without breaks before replacing the PCB.
- 04
The boiler restarts by itself intermittently, as if it turns off and on without reason.
Cause: A fault in the control board causes erratic restarts by losing the reference of its own parameters.
First, rule out a voltage drop in the home's electrical installation.
Fault codes for Neckar that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| Reset button flashing 0.5 Hz + LED 75 °C | During ignition: ionisation signal is detected but the burner does not ignite. | The printed circuit board (PCB 87083002120) may fail in the detection/ionisation path or be damp, causing false flame or lack of spark; check ionisation microamperage, wiring, and moisture/oxidation on the PCB before replacing it. |
| Reset button flashes at 4 Hz (four times per second) | Control/safety fault (encoder/sensors) including possible PCB defect. | Fault in the PCB (Eurotronic/PCB) in managing inputs/power supplies; check voltages at ST2 (L–N/LR–N), fuses F1/F2, and 5 V to sensors. If everything is correct and the symptom persists, replace the 87083002120. |
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 PCB Neckar 87083002120
- Catalogue reference
- 87083002120
- Brand
- Neckar
- 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.
- voltage
- 230V~
- current
- 1 A
Frequently asked questions about the PCB 87083002120
Is the Honeywell PENW24 PCB compatible with my boiler?
Which boiler models are compatible with the Honeywell PENW24 PCB?
How can I find out if my boiler is on the compatibility list?
What fault symptoms can the Honeywell PENW24 PCB indicate?
Is the PCB of the NECKAR NW24 manufactured by Honeywell?
Where can I buy the Honeywell PENW24 PCB?
Spare parts related to Neckar Junkers Euroline ZW (combi)
