
Sime Metropolis H25 BF PCB Ref. 6230630
When you turn on the hot water tap or activate the heating, the SIT Sime Metropolis H25 BF PCB Ref. 6230630 is responsible for controlling the ignition, burner modulation, and the boiler pump. If this part fails, you will notice that the boiler does not start, locks out, or operates erratically. This component is compatible with several models, including those from the Climit GG M, Format ZIP, and Metropolis ranges, among others. It is advisable to replace it when you experience these operational issues.
Sime boilers compatible with reference 6230630
PCB with reference 6230630. 16 verified compatibilities: 23 BF and 23 OF.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Sime 23 BF | Climit GG M | Contrasted |
| Sime 23 OF | Climit GG M | Contrasted |
| Sime 28 BF | Climit GG M | Contrasted |
| Sime 28 OF | Climit GG M | Contrasted |
| Sime 25 BF TS | Format ZIP | Contrasted |
| Sime 30 BF TS | Format ZIP | Contrasted |
| Sime 35 BF TS | Format ZIP | Contrasted |
| Sime 25 BF | Format ZIP 5 | Contrasted |
| Sime 25 BF TS | Format ZIP 5 | Contrasted |
| Sime 25 OF | Format ZIP 5 | Contrasted |
| Sime 30 OF S | Format ZIP 5 | Contrasted |
| Sime 23 OF | Format ZIP GGF | Contrasted |
| Sime 28 OF | Format ZIP GGF | Contrasted |
| Sime 30C Clima | Formel | Contrasted |
| Sime 25 BF | Metropolis | Contrasted |
| Sime 30 BF | Metropolis | 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. 6230630 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 6230630. 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 6230630 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, it's completely dead.
Cause: There is no power coming from the PCB to the rest of the system; no component is receiving a command to operate.
Check that there is mains power to the PCB and that the input fuse is not blown before replacing it.
- 02
The gas valve does not open, or it opens and there is no flame, even though the rest of the boiler seems to be working.
Cause: The block that controls the gas valve (this board has a SIT assembly) is the one that gives the opening command; if it fails, gas does not reach the burner.
Check that the gas valve receives power at the moment of ignition; if it doesn't receive anything, the problem is upstream, in the PCB.
- 03
The boiler modulates the flame erratically, rising and falling without relation to the heat demand.
Cause: The management of the modulation signal to the gas valve becomes erratic when the control circuit of the PCB is damaged.
Rule out that the temperature sensor is not dirty or displaced, as that also causes irregular modulation.
- 04
The boiler locks out with different fault codes, without a clear pattern between one fault and another.
Cause: A damaged trace or a cold solder joint on the PCB causes incorrect readings from multiple sensors simultaneously, resulting in fluctuating errors.
Write down the codes as they appear; if they don't match the same component, it's more likely to be the PCB and not a loose sensor.
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 Sime 6230630 PCB.
- Catalogue reference
- 6230630
- 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.
- Primary voltage of the transformer
- 230V
- Manufacturer of the transformer block/valve (logo on the plate)
- SIT
- QFP chip code
- 143.00










