Siemens PCB for Combi 28 HE, Duo Tec, and Platinum Combi
When you turn on the hot water tap or activate the heating, the Siemens PCB for Combi 28 HE, Duo Tec, and Platinum Combi is responsible for controlling the ignition, burner modulation, and the boiler pump. If this part fails, you may notice that the boiler does not start, gets locked, or exhibits erratic operation, which can generate fault codes such as E151, E154, or E135. This board is compatible with models from the Combi, Duo, and Platinum ranges, including the Combi 28 HE and the Duo Tec 28 HE. It should be replaced when you experience operational issues or errors are displayed in the system.
VAT included
Consult via WhatsAppBaxi Roca boilers compatible with reference 7690360
PCB with reference 7690360. 12 verified compatibilities: 28 HE and Tec 24 HE.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca 28 HE | Combi | Contrasted |
| Baxi Roca Tec 24 HE | Duo | Contrasted |
| Baxi Roca Tec 28 HE | Duo | Contrasted |
| Baxi Roca Tec 28 HE A | Duo | Contrasted |
| Baxi Roca Tec 33 HE | Duo | Contrasted |
| Baxi Roca Combi 24 HE | Platinum | Contrasted |
| Baxi Roca Combi 28 HE | Platinum | Contrasted |
| Baxi Roca Combi 28 HE A | Platinum | Contrasted |
| Baxi Roca Combi 33 HE | Platinum | Contrasted |
| Baxi Roca Combi 40 HE | Platinum | Contrasted |
| Baxi Roca Gold Combi 28 HE | Potterton | Contrasted |
| Baxi Roca Promax 28 HE Plus | Potterton | 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. 7690360 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 7690360. 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 7690360 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 won't start, and a fault code for the PCB or communication appears on the display.
Cause: The PCB manages all the logic of the boiler; an internal fault can cause that type of generic fault code.
Cut the power for 30 seconds and then restore it to see if the fault code reappears before ruling out the PCB.
- 02
The burner ignites with an unstable flame, which rises and falls without apparent reason.
Cause: The PCB modulates the gas valve according to demand; if its control electronics fail, the modulation becomes uncontrolled.
Check the inlet gas pressure and the condition of the burner before attributing it to the PCB.
- 03
The thermostat in the house is not able to turn on the boiler even though it is requesting heat.
Cause: The PCB receives that signal through its low voltage terminals and translates it into an ignition order.
Bypass the demand directly on the PCB to rule out that the fault is in the thermostat or its wiring.
- 04
The boiler turns off by itself in the middle of a heating or domestic hot water cycle.
Cause: An intermittent fault in the PCB can generate incorrect readings that cause a safety shutdown.
Note the exact moment it turns off (start, modulation, stop) to determine whether the fault is with the PCB or a sensor.
Fault codes for Baxi Roca that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| E151 | Internal error of the boiler's PCB. | Internal fault of the PCB. Check voltages/grounds and connectors; if the error persists after reset and checks, confirm by replacing the PCB. |
| E154 | Internal boiler PCB error. | Internal fault of the PCB. After reset and wiring inspection, if it reappears, check the power supply and replace the PCB. |
| E135 | Internal fault of the card. | Internal fault of the PCB. Check power supply and perform a reset; if it does not resolve and there are no other causes, replace the board. |
| E.02 .16 | Timeout communication with the internal memory of the boiler's control board. | The PCB cannot communicate with its internal memory (board fault). Check for electromagnetic disturbances and connections; if the issue persists, replace the main board. |
| E.02 .17 | Permanent communication failure between the gas valve and the boiler PCB. | Communication fault of the PCB (bus/control) with the gas valve due to a fault in the board or line. Check harness/connectors CN1/CN2 and EMI; if not resolved, replace the board. |
| H.01 .00 | Temporary communication failure between the gas valve and the boiler PCB. | Temporary communication interruption managed by the PCB; when the board fails, the warning reappears. Check CN1/CN2 and supply; if it persists, replace the main board. |
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 Roca 7690360 PCB.
- Catalogue reference
- 7690360
- Brand
- Baxi Roca
- 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
- Siemens
Frequently asked questions about the PCB 7690360
Who manufactures the PCB for the Combi 28 HE boiler?
Does this PCB work for my Combi 28 HE boiler?
Is the Siemens PLBA148 PCB compatible with the Duo Tec range?
Does this PCB also work for the Potterton Promax 28 HE Plus?
What fault codes are compatible with this PCB?
How many models are compatible with the Siemens PLBA148 PCB?
