PCB Saunier Duval Isofast C28E1 Ref. S1019000
The control PCB manages the ignition, burner modulation, pump, and safety features of the boiler. If it fails, the boiler may not start, lock out, or behave erratically, displaying fault codes such as 13: Main printed circuit board fault or 20: Communication defect between the user interface and the main board. This part is compatible with models from the Isofast range, such as C28E1, C35E1, F28E1, F35E1, as well as from the Isomax range, among others. It is recommended to replace it when symptoms of malfunction or ignition faults are present.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1019000
PCB with reference S1019000. 11 verified compatibilities: C 28 E1 and C 28 E1 NOX.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval C 28 E1 | Isofast | Contrasted |
| Saunier Duval C 28 E1 NOx | Isofast | Contrasted |
| Saunier Duval C 35 E1 | Isofast | Contrasted |
| Saunier Duval F 28 E1 | Isofast | Contrasted |
| Saunier Duval F 35 E1 | Isofast | Contrasted |
| Saunier Duval C 28 E2 | Isomax | Contrasted |
| Saunier Duval C 28 E204 | Isomax | Contrasted |
| Saunier Duval C 28 E205 | Isomax | Contrasted |
| Saunier Duval F 28 E2 | Isomax | Contrasted |
| Saunier Duval F 28 E204 | Isomax | Contrasted |
| Saunier Duval F 28 E205 | Isomax | 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. S1019000 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 S1019000. 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 S1019000 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 turns off by itself showing a fault in the electronics.
Cause: The PCB detects an internal problem and shuts down operation for safety.
Turn off and on the boiler from the main switch and note if the fault reappears always at the same point in the cycle.
- 02
The boiler is losing general control: it does not regulate the temperature properly and does not respond to the controls.
Cause: The control stage of the PCB does not manage the signals from the sensors and the user correctly.
Make sure that the problem does not disappear by checking the batteries and the wiring of the remote control before replacing the PCB.
- 03
There is a smell of burning or a strange noise in the area of the PCB.
Cause: An internal electrical fault, typical of the transformer or the power supply of the PCB, affects its power supply.
Cut off the power immediately and visually check for any burn marks before handling anything else.
- 04
The boiler starts up well but stops responding after a while of operation.
Cause: A component of the PCB degrades with heat and fails intermittently.
Check if the fault occurs consistently after the same usage time; this indicates a thermal issue with the PCB.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 13 | Main printed circuit board fault. | The main PCB (S1019000) does not pass the internal self-diagnosis; this is usually due to an electronics/EEPROM fault or the PCB not generating its internal voltages. Check the 230 V input, fuse, and low voltages (5/15/24 V) on the PCB; if these are correct and the wiring is OK, replace the PCB. |
| 20 | Communication fault between the user interface and the main PCB. | Communication channel/ebus fault on the main board, incompatibility between interface and PCB or defective connection/harness. Check the interface power supply from the board, connectors/harness and test with a known interface; if it persists, the cause is the PCB. |
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 Saunier Duval S1019000 PCB.
- Catalogue reference
- S1019000
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 4 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.
- OEM reference and compatibility
- S1019000 — compatible with Isofast C28E1, C35E1, F28E1, F35E1 and Isomax C28E2, F28E2
- Supply voltage
- 230V
- Factory code on PCB
- 110044 2
- Transformer brand
- Myrra
Frequently asked questions about the PCB S1019000
Is the reference S1019000 for this Saunier Duval Isofast C28E1 PCB confirmed?
How do I identify if this is the PCB that my Saunier Duval Isofast C28E1 uses?
What voltage does this PCB of the Isofast C28E1 operate at?
Does this PCB also work for a Saunier Duval Isomax F28E2?
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