PCB Junkers Bosch Euromaxx ZWC28-1MF2A
The Junkers Bosch Euromaxx ZWC28-1MF2A PCB is the component that controls the ignition, burner modulation, pump, and safety features of the boiler. If it malfunctions, the boiler may fail to start, lock out, or operate erratically. This issue may be associated with fault code F0, which indicates an internal fault of the printed circuit board. It is installed in boilers from the Junkers Euromaxx range, such as the ZWC28-1MF2A model, among others. A technician must confirm through diagnosis whether it needs to be replaced when these symptoms or errors are detected.
Junkers boilers compatible with reference 87172076530
PCB with reference 87172076530. A proven compatibility: ZWC28-1MF2A.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWC28-1MF2A | Junkers Euromaxx | 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. 87172076530 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 87172076530. If it is not visible, do not identify the part from 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 that require diagnosis on the PCB 87172076530
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, even though it is connected to the power supply.
Cause: The PCB does not receive or transform the power correctly, and without it, no control circuit is activated.
Check the fuse on the PCB and verify that power is reaching the input terminal block before considering it faulty.
- 02
An error code appears on the display that varies and sometimes disappears when reset.
Cause: An intermittent fault in the control electronics causes erratic readings from sensors or the outputs it controls.
Note the exact code and the time it appears, and check if it coincides with the pump start or the burner ignition.
- 03
The thermostat or the remote control cannot activate the boiler, as if it is not receiving the command.
Cause: The PCB translates that signal into a request for heating or domestic hot water; if it fails, the command is lost.
Check the wiring and terminals of the thermostat on the PCB, as they may loosen over time.
- 04
The pump or the three-way valve activate by themselves or stay on without reason.
Cause: The output relays on the PCB can get stuck or issue commands without a real request.
Listen for the relay clicking when requesting heating; if the component operates without that click, suspect the PCB.
Junkers fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F0 | Internal fault/PCB fault | The PCB (Heatronic/PCB) reports an internal fault. Check connection/voltage and, above all, contacts and connectors (plugs, ignition cables RAM and BUS); if it persists after reset, replace the PCB or the BUS module. |
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 Junkers 87172076530 PCB.
- Catalogue reference
- 87172076530
- Uniclima internal SKU
- PECEZWC2X
- 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.
- Code printed on the central integrated circuit
- 6 744 601 320
- Integrated batch code
- BF 14 18 FD 488
Frequently asked questions about the PCB 87172076530
Is this PCB compatible with the Junkers Bosch Euromaxx ZWC28-1MF2A boiler?
What is the code for the integrated circuit on the PCB of the Euromaxx ZWC28-1MF2A?
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