PCB Sime Format DGT HE 25 Ref. 6301422
The PCB (control board) Sime Format DGT HE 25 Ref. 6301422 is a component that manages the ignition, burner modulation, pump, and safety features of the boiler. When it fails, the boiler may not start, become locked, or exhibit erratic behavior, and the fault code AL 08 may appear, indicating an anomaly in the flame detection circuit. This board is compatible with models from the Format DGT HE and System HE ranges, including the Format DGT 25 HE, Format DGT 30 HE, Format DGT 35 HE, among others. It is recommended to replace the board when these operational issues are detected.
Sime boilers compatible with reference 6301422
PCB with reference 6301422. Five confirmed compatibilities: Format DGT 25 HE and Format DGT 30 HE.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Sime Format DGT 25 HE | Format DGT HE | Contrasted |
| Sime Format DGT 30 HE | Format DGT HE | Contrasted |
| Sime Format DGT 35 HE | Format DGT HE | Contrasted |
| Sime System 12 HE | System HE | Contrasted |
| Sime System 20 HE | System HE | 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. 6301422 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 6301422. 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 6301422 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 ignite or respond to the controls.
Cause: A fault in the electronic control prevents the PCB from processing the heat demand and activating the ignition.
Check if there is power to the PCB and make sure the fuses are not blown before replacing it.
- 02
The boiler is locking up and there is no way to reset it, or it shows a fixed fault code.
Cause: An internal fault in the PCB prevents the safety sequence from being completed, and it remains locked even if you press reset.
Note the exact fault code from the display: many codes point to sensors or pressure switches and not to the PCB.
- 03
Communication with the thermostat or control panel has been lost.
Cause: The communication section of the PCB stops communicating with the control, even though the rest of the boiler is working.
Bypass the heat demand directly at the PCB terminals to rule out the thermostat before replacing it.
- 04
The boiler operates erratically, sometimes working well and other times not.
Cause: It is common in PCBs with aged solder joints or components degraded by heat and years of service.
First, check for any visible moisture or corrosion on the connectors of the PCB.
Fault codes for Sime that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| AL 08 | Parasitic flame anomaly: fault in the flame detection circuit. | Flame detection is managed by the PCB; if the electrode, wiring, and grounding are correct, a fault in the detection circuit on the PCB causes AL 08. Verify by measuring the ionization signal (e.g., parameter i6 on the display or with a microammeter in series) and continuity up to the FLM connector on the board; if the values are correct and it persists, replace/test the 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 PCB Sime 6301422
- Catalogue reference
- 6301422
- Brand
- Sime
- Type of part
- PCBs (control boards)
- Units in stock
- 0 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- 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.
- voltage
- 230V
- frequency
- 50Hz
Frequently asked questions about the PCB 6301422
Does this PCB work for a Sime Format DGT HE 35?
Is it the same PCB that the Sime Open DGT HE 25/40 uses?
What fault does this PCB resolve in a Sime Open DGT HE 20 T?
