PCB for Boiler Isomax C 28 E2 - Ref. S1019000
Electronic PCB for Isomax C 28 E2 boiler - Ref. S1019000, manufactured by Saunier Duval. This control board is responsible for managing the ignition, burner modulation, pump, and safety features of the boiler. If it fails, you will notice that the boiler does not start, locks out, or operates erratically, potentially displaying fault codes 13 or 20. It is compatible with boilers from the Isofast and Isomax ranges, such as the C 28 E2 model and other similar ones. A technician must confirm through diagnosis whether it needs to be replaced when it shows faults in its operation or the mentioned symptoms.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- S1019000
- Warranty
- 1 year
Saunier 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
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- 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 that require diagnosis on the PCB S1019000
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 attempts to ignite several times, you can hear the spark attempt, and it ends up locking out without the flame lighting.
Cause: The PCB manages the ignition and the safety time of the gas valve; if the ignition module fails, it aborts the attempt even if the rest of the components are functioning properly.
Before replacing the PCB, check that the ignition electrode and its cable are in good condition and properly connected: a fault there presents the same symptom as a damaged PCB.
- 02
The display shows an ignition fault code, or the red fault indicator light turns on.
Cause: The PCB detects that there has been no flame detection within the safety time and marks it as an ignition fault.
Note the exact code displayed and consult it in the manual: the same ignition fault code can be due to the gas, the electrode, or the PCB, not just the latter.
- 03
The boiler is completely dead: no indicators, no display, no fan noise.
Cause: The power block and ignition transformer of the PCB, which operates at 230V, may have been damaged and left the rest of the circuit without voltage.
Check if the boiler is receiving the 230V from the mains and inspect the fuse on the PCB, if accessible, before declaring the PCB dead.
- 04
The thermostat or control requests heating or domestic hot water, and the boiler does not react at all.
Cause: The PCB is the one that receives the demand from the thermostat and commands the ignition; if it doesn't process that signal, the boiler remains on standby without doing anything.
Check that the thermostat has power and that the wiring or communication with the boiler is not interrupted before blaming the PCB.
Fault codes Saunier Duval that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 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
- Uniclima internal SKU
- PEIC28E2
- Brand
- Saunier Duval
- 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
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Supply voltage
- 230V
- Ignition transformer manufacturer
- Myrra
Frequently asked questions about the PCB S1019000
What voltage does this PCB operate at?
Is this PCB suitable for an Isofast C 35 E1?
How many pins does the integrated circuit on this PCB have?
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