Junkers Euromaxx PCB ZWC28 1MFA 23 Ref. 87483005330
Refurbished Junkers PCBs (control boards)

Junkers Euromaxx PCB ZWC28 1MFA 23 Ref. 87483005330

The control PCB manages the ignition, burner modulation, pump, and safety features of the boiler. If it fails, the boiler may not start, become locked, or exhibit erratic operation, displaying the fault code F0: Internal fault/PCB fault. This board is compatible with models from the Junkers Euromaxx range ZWC 24/28-1MFA and ZWC 28/32-1MFA, among others. A technician must confirm through diagnosis whether it needs to be replaced when these symptoms or faults are detected. The confirmed manufacturer reference is 87483005330.

Type of part
PCBs (control boards)
Status
Refurbished
Catalogue reference
87483005330
Warranty
1 year
VAT included Stock · 2 units
Compatibility

Junkers boilers compatible with reference 87483005330

PCB with reference 87483005330. Four confirmed compatibilities: ZWC 24-1MFA 23 and ZWC 28-1MFA 23.

Verified compatibility

Boiler modelFamilyVerification
Junkers ZWC 24-1MFA 23Junkers Euromaxx ZWC 24/28-1MFAVerified
Junkers ZWC 28-1MFA 23Junkers Euromaxx ZWC 24/28-1MFAVerified
Junkers ZWC 28-1MFA 23Junkers Euromaxx ZWC 28/32-1MFAVerified
Junkers ZWC 32-1MFA 23Junkers Euromaxx ZWC 28/32-1MFAVerified

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

Guide

How to check if the reference 87483005330 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 87483005330. 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 87483005330

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 when the main switch is activated.

    Cause: A blown fuse on the PCB prevents the control system from receiving power.

    Check the fuse before considering that the PCB is faulty.

  • 02

    It locks up with a fault code after trying to ignite.

    Cause: The electronics stop the ignition upon detecting a safety anomaly.

    Note the code: many refer to the pressure switch or flue sensor, not to the PCB.

  • 03

    The flame fluctuates irregularly without intervention.

    Cause: The electronic management of the modulation may be failing on the PCB.

    Check if the problem occurs only when requesting domestic hot water or also in heating.

  • 04

    The boiler does not save the temperature settings when turned off.

    Cause: A memory fault on the PCB prevents it from retaining the configuration.

    Check if this coincides with frequent power outages in your home.

  • 05

    A constant relay clicking sound can be heard even when the boiler is turned off.

    Cause: A relay on the PCB may be stuck or faulty and activate unnecessarily.

    Listen to see if the clicking is continuous or only occurs when turning on.

Junkers fault codes that require diagnosis

CodeFaultTechnical checks
F0Internal fault/PCB fault.This symptom may be related to the part, but it does not confirm that it is faulty. A technician must check the equipment and its inspection according to the manual before deciding on a repair or replacement.

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 87483005330 PCB.

Catalogue reference
87483005330
Uniclima internal SKU
PECEZWC28
Brand
Junkers
Type of part
PCBs (control boards)
Units in stock
2 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Frequently asked questions

Frequently asked questions about the PCB 87483005330

Does this PCB work for all boilers in the ZWC 24/28-1MFA series?
It is suitable for the 1MFA models of the Junkers Euromaxx ZWC 24/28-1MFA series listed in the compatibility list of the datasheet.
Which models are compatible with the Junkers Euromaxx ZWC28 1MFA 23 Ref. 87483005330 PCB?
The compatible models are: ZWC 24-1MFA 23, ZWC 28-1MFA 23, ZWC 28-1MFA 23, and ZWC 32-1MFA 23.
What fault code is documented for this PCB?
The documented fault code for this PCB is F0.
Where can I find the reference for this PCB?
PECEZWC28 is Uniclima’s internal SKU for locating this listing. To confirm compatibility, check the manufacturer’s reference and the exact appliance model.
How many models are compatible with this PCB?
A total of 4 models are compatible with this PCB.

Spare parts related to Junkers Junkers Euromaxx ZWC 24/28-1MFA

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Junkers Euromaxx PCB ZWC28 1MFA 23 Ref. 87483005330