
Bertelli & Partners PCB Baxi Roca Neodens Plus 28/28F Ref. HAGC03-BX01
PCB manufactured by Bertelli & Partners (B&P), model HAGC03-BX01, for Baxi Neodens Plus and Baxi Platinum Compact boilers. Power supply 230V/50Hz, CE Registration 0085BU0466. It is the control board of the boiler: it is replaced when the electronic system fails and the boiler does not ignite or does not respond to the controls.
VAT included
Consult via WhatsAppBaxi boilers compatible with reference 7691279
PCB with reference 7691279. Eight confirmed compatibilities: Neodens Plus 24/24F and Neodens Plus 28/28F.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Neodens Plus 24/24F | Neodens Plus | Contrasted |
| Baxi Neodens Plus 28/28F | Neodens Plus | Contrasted |
| Baxi Neodens Plus ECO 24/24F | Neodens Plus | Contrasted |
| Baxi Neodens Plus ECO 28/28F | Neodens Plus | Contrasted |
| Baxi Platinum Compact 24/24F | Platinum Compact | Contrasted |
| Baxi Platinum Compact 28/28F | Platinum Compact | Contrasted |
| Baxi Platinum Compact ECO 24/24F | Platinum Compact | Contrasted |
| Baxi Platinum Compact ECO 28/28F | Platinum Compact | 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 the reference 7691279 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 7691279. 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 and faults that the PCB 7691279 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, it is completely off: no lights or display.
Cause: The control board does not receive or process the current and does not activate any component.
Check that 230 V is reaching the boiler's input and that the main fuse of the house has not tripped before assuming that the PCB is faulty.
- 02
The screen lights up but the buttons do not respond.
Cause: The control electronics have become locked, although the basic power is still reaching the PCB.
Disconnect the boiler from the power supply for 30 seconds and then reconnect it to force a reset before changing the PCB.
- 03
The boiler starts intermittently, sometimes it ignites and sometimes it doesn't.
Cause: An intermittent fault on the PCB (cold solder joint, component that overheats) causes the control to fail only under certain conditions.
Note if the fault coincides with the use of domestic hot water or heating and check that the connectors on the PCB are properly fitted, without rust or looseness.
- 04
An error code appears that does not correspond to any external component checked.
Cause: When the PCB discards faults from the pressure switch, sensor, or gas valve and the fault code persists, the problem is usually in the management electronics itself.
Check the code in the boiler manual and first rule out sensors, pressure switch, and gas valve before assuming that the PCB is faulty.
Fault codes Baxi that this part resolves
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 55 | The boiler does not recognize the new PCB. | If you have changed the PCB or the parameters have been lost, the boiler may not recognize the gas valve. Enter the installer menu and perform the automatic calibration (or adjust F03/F12 according to the manual). If the fault disappears, it was uncalibrated. |
| 135 | Internal fault in the PCB. | The PCB has self-diagnosed with an internal fault. Check that it is receiving power and that the connections are secure. If the problem persists after resetting and reviewing, the PCB is faulty and needs to be replaced. |
| 83 | The boiler is not communicating with the control. | There may be an issue with the communication bus of the PCB and it is not communicating with the remote control. Check the wiring and try with another remote control that you know works. If it still does not communicate, the PCB is to blame. |
| 84 | The boiler is not communicating with the control. | Similar to fault code 83: there is a problem in the communication circuit of the PCB or a short circuit in the bus. Check that the bus has continuity and rule out that it is the remote control. If it still does not work, the PCB is faulty. |
| 86 | The boiler is not communicating with the control. | Similar to faults 83 and 84: there is a defect in the communications of the PCB. Check the bus and the control. If it does not improve, the PCB needs to be replaced. |
| 87 | The boiler is not communicating with the control. | Similar to faults 83, 84, and 86: the communication interface of the PCB has a fault. Check the wiring and the control. If the problem persists, the PCB is the cause. |
| 168E | Internal error in the boiler's PCB. | In the Platinum Compact 24/24F model, this code indicates an internal problem in the PCB. After checking that it is receiving power and there are no external interferences, if the issue is not resolved, the PCB is defective. |
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 Baxi 7691279 PCB.
- Catalogue reference
- 7691279
- Brand
- Baxi
- 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.
- Component manufacturer
- Bertelli & Partners (B&P)
- Model B&P
- HAGC03-BX01
- Power supply
- 230V / 50Hz
- CE registration
- 0085BU0466
- Temperature range (Ta/Ts)
- Ta:2 / Ts:10
- Additional code on PCB
- 421410JX1377
- Microcontroller marking
- 40922C09 R5F212AC SNFP
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Baxi Neodens Plus 24/24F and 28/28F Manual (PDF)Official operating and maintenance instructions for the Baxi Neodens Plus 24/24F and 28/28F boiler, in Spanish. Document provided by Uniclima as a technical reference.


