Honeywell PCB for NECKAR NW24 Boiler and Compatible Models
Refurbished Neckar PCBs (control boards) Honeywell

Honeywell PCB for NECKAR NW24 Boiler and Compatible Models

When you open the hot water tap or turn on 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 problems with ionization or safety control. This PCB is compatible with several models from the Junkers Euroline range, among others. A technician must confirm through diagnosis whether it is necessary to replace it when these faults in operation are detected.

Type of part
PCBs (control boards)
Status
Refurbished
Catalogue reference
87083002120
Warranty
1 year
VAT included OUT OF STOCK
Compatibility

Neckar boilers compatible with reference 87083002120

PCB with reference 87083002120. 22 verified compatibilities: ZW23-1AE23 and ZW23-1AE31.

Proven compatibility

Boiler modelFamilyVerification
Neckar ZW23-1AE23Junkers Euroline ZW (combi)Contrasted
Neckar ZW23-1AE31Junkers Euroline ZW (combi)Contrasted
Neckar ZW23-1KE23Junkers Euroline ZW (combi)Contrasted
Neckar ZW23-1KE31Junkers Euroline ZW (combi)Contrasted
Neckar ZW24-1ELH AE23Junkers Euroline ZW (combi)Contrasted
Neckar ZW24-1ELH AE31Junkers Euroline ZW (combi)Contrasted
Neckar ZW28-1LHKE23Junkers Euroline ZW (combi)Contrasted
Neckar ZW28-1LHKE31Junkers Euroline ZW (combi)Contrasted
Neckar ZW30-1LHAE23Junkers Euroline ZW (combi)Contrasted
Neckar ZW30-1LHAE31Junkers Euroline ZW (combi)Contrasted
Neckar ZS23-1AE23Junkers Euroline ZS (heating only)Contrasted
Neckar ZS23-1AE31Junkers Euroline ZS (heating only)Contrasted
Neckar ZS23-1KE23Junkers Euroline ZS (heating only)Contrasted
Neckar ZS23-1KE31Junkers Euroline ZS (heating only)Contrasted
Neckar NW24-1LHAE23Junkers Euroline NW24Contrasted
Neckar NW24-1LHAE31Junkers Euroline NW24Contrasted
Neckar NW24-1LHKE23Junkers Euroline NW24Contrasted
Neckar NW24-1LHKE31Junkers Euroline NW24Contrasted
Neckar NW24/28-1LHKE23Junkers Euroline NW24Contrasted
Neckar NW24/28-1LHKE31Junkers Euroline NW24Contrasted
Neckar NW24/30-1LHAE23Junkers Euroline NW24Contrasted
Neckar NW24/30-1LHAE31Junkers Euroline NW24Contrasted

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

Guide

How to check if ref. 87083002120 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 87083002120. If it is not visible, do not identify the part by 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 87083002120

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.

Neckar fault codes that require diagnosis

CodeFaultTechnical checks
Reset button flashing 0.5 Hz + LED 75 °CDuring 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.

Technical data

Data sheet for the PCB Neckar 87083002120

Catalogue reference
87083002120
Uniclima internal SKU
PENW24
Brand
Neckar
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.

voltage
230V~
current
1 A
Frequently Asked Questions

Frequently asked questions about the PCB 87083002120

Is the Honeywell PENW24 PCB compatible with my boiler?
The Honeywell PENW24 PCB is compatible with 22 models of boilers from the Junkers Euroline ZW, ZS, and NW24 ranges.
Which boiler models are compatible with the Honeywell PENW24 PCB?
The compatible models include ZW23-1AE23, ZW23-1AE31, ZW24-1ELH AE23, NW24-1LHAE23, among others from the mentioned ranges.
How can I find out if my boiler is on the compatibility list?
Verify that your model belongs to the Junkers Euroline ZW, ZS, or NW24 ranges, as only these models are compatible with the PENW24 PCB.
What fault symptoms can the Honeywell PENW24 PCB indicate?
The documented fault codes include: Reset button flashes at 0.5 Hz + LED 75 °C and Reset button flashes at 4 Hz.
Is the PCB of the NECKAR NW24 manufactured by Honeywell?
Yes, the Honeywell logo is clearly visible on the PCB.
Where can I buy the Honeywell PENW24 PCB?
You can purchase the Honeywell PENW24 PCB in our online store, where we guarantee its compatibility with the listed models.

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Honeywell PCB for NECKAR NW24 Boiler and Compatible Models