Junkers PCB ZWR24-2 Ref. 87483000300
RefurbishedJunkersPCBs (control boards)

Junkers PCB ZWR24-2 Ref. 87483000300

If your boiler does not ignite or gets blocked due to a flue gas evacuation fault, the Junkers ZWR24-2 PCB may be the solution. This part acts as an extractor, evacuating combustion gases and generating the necessary draft for the boiler to start. When it fails, you may notice faults such as C1, C6, or C7. It is compatible with models like MINI-11AE, MINI-8AE, ZR24-2, among others. A technician must confirm through diagnosis whether it needs to be replaced when experiencing ignition or flue gas evacuation issues.

Type of part
PCBs (control boards)
Status
Refurbished
Catalogue reference
87483000300
Warranty
1 year
VAT includedStock · 3 units
Compatibility

Junkers boilers compatible with reference 87483000300

PCB with reference 87483000300. 14 verified compatibilities: MINI-11AE and MINI-11ASE.

Proven compatibility

Boiler modelFamilyVerification
Junkers MINI-11AEMINI-11AEContrasted
Junkers MINI-11ASEMINI-11ASEContrasted
Junkers MINI-8AEMINI-8AEContrasted
Junkers MINI-8ASEMINI-8ASEContrasted
Junkers ZN18-2ZN18-2Contrasted
Junkers ZR11-2ZR11-2Contrasted
Junkers ZR18-2ZR18-2Contrasted
Junkers ZR24-2ZR24-2Contrasted
Junkers ZSR11-2ZSR11-2Contrasted
Junkers ZSR18-2ZSR18-2Contrasted
Junkers ZSR24-2ZSR24-2Contrasted
Junkers ZWN18-2ZWN18-2Contrasted
Junkers ZWR18-2ZWR18-2Contrasted
Junkers ZWR24-2ZWR24-2Contrasted

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

Guide

How to check if ref. 87483000300 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 87483000300. 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 87483000300

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 ignite and no click is heard when calling for heat.

    Cause: If the relay that activates the ignition does not switch, the PCB does not send the command to either the gas valve or the fan.

    Bring your ear close to the PCB when requesting heat; if you don't hear any click, rule out the thermostat first before replacing the PCB.

  • 02

    The boiler attempts to ignite and then shuts off immediately, always the same way.

    Cause: A fault in the control electronics interrupts the ignition sequence before it is completed.

    Check if the display shows any fault code at that moment before changing the PCB, the cut-off might be coming from another sensor.

  • 03

    The fan or the pump do not start even though the rest of the boiler functions normally.

    Cause: The PCB is the one that gives the electrical command to these components; if the output circuit fails, they do not receive current even if they are in good condition.

    Measure with a multimeter if voltage reaches the fan or the pump at the moment of the command before considering the PCB as faulty.

  • 04

    The boiler locks out and needs to be manually reset frequently.

    Cause: The PCB interprets a fault, either real or from a sensor reading, and repeatedly locks the equipment for safety reasons.

    Note which fault code each lockout indicates; if it's always the same, it points more to a specific sensor than to the PCB itself.

Junkers fault codes that require diagnosis

CodeFaultTechnical checks
C1Fan speed is not reached.The fan control PCB (Gebläsesteuerung, ref. 87483000300) may not properly excite/regulate the motor, preventing it from reaching the speed; check by measuring the output from the PCB to the fan and ensure that the pressure switch closes with the airflow.
C6Differential pressure signal not detected.Fault in the fan control board causes the fan not to start or not to generate the required flow, and the differential pressure does not close; check voltage/commands from the board to the fan and rule out fan/wiring before replacing the board.
C7Device does not detect a running fan.If the auxiliary fan control board does not supply or read the tacho signal from the fan, the boiler does not detect rotation; check for the presence of speed signal (tacho/Hall) at the connector to the board and ensure the fan is rotating correctly.

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

Technical sheet: Junkers 87483000300

Catalogue reference
87483000300
Uniclima internal SKU
PEAZWR242
Brand
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.

thread
G 1/4
reference number
87430000300
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: PCB 87483000300

Is this PCB suitable for the Junkers ZWR24-2 boiler?
Yes, ZWR24-2 is on the list of compatible boilers, along with ZWR18-2, ZWN18-2, ZSR11-2, ZSR18-2, ZSR24-2, ZR11-2, ZR18-2, ZR24-2, ZN18-2 and the MINI-8AE, MINI-8ASE, MINI-11AE and MINI-11ASE range.
What are the BSG seal and the ERA relay that appear on the PCB of the Junkers ZSR24-2?
They are visible brands on the PCB; they do not reliably indicate the manufacturer of the complete component.
Is this PCB also suitable for the Junkers MINI-8ASE?
Yes, MINI-8ASE is among the compatible models listed on this datasheet.
What is the reference for this PCB?
PEAZWR242 is Uniclima’s internal SKU for locating this listing. To confirm compatibility, check the manufacturer’s reference and the exact appliance model.
What fault codes are documented for this PCB?
The documented fault codes for this PCB are C1, C6, and C7.
How many models are compatible with this PCB?
A total of 14 models are compatible with this PCB.

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Junkers PCB ZWR24-2 Ref. 87483000300