Saunier Duval Thelia 30 E Ignition Box - Ref. S4565AF
Ignition control box S4565AF (version 1007V01 1), manufactured in Hungary. It is installed in various Saunier Duval boilers: Master Twin L 85 E, Sylva 24 E, Sylva FF 24 E, Thelia 30 E, Thelia Twin 28 E, and Themis Twin 28 E. It operates at 220-240V, 50/60Hz, with a safety time (Ts) of 10 seconds. It is replaced when the boiler ignition fails or there are ignition lockouts.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S4565AF
PCB with reference S4565AF. Six confirmed compatibilities: TWIN L 85 E and 24 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval TWIN L 85 E | MASTER | Contrasted |
| Saunier Duval 24 E | SYLVA | Contrasted |
| Saunier Duval FF 24 E | SYLVA | Contrasted |
| Saunier Duval 30 E | THELIA | Contrasted |
| Saunier Duval TWIN 28 E | THELIA | Contrasted |
| Saunier Duval TWIN 28 E | THEMIS | 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. S4565AF 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 S4565AF. 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 S4565AF PCB solves.
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 tries to ignite but gets locked and needs to be reset manually.
Cause: The ignition box does not complete the ignition sequence within the safety time and interrupts the process.
Check the ignition electrode and its cable: if it is dirty, broken, or improperly positioned, it can cause the same fault.
- 02
The ignition fault comes and goes; sometimes it starts well and other times it gets blocked.
Cause: An electronic component that degrades does not always fail consistently, especially when cold or after many hours of use.
Note when it fails (first ignition of the day, after running for a while) to determine if it is electronic or mechanical.
- 03
The boiler shows a lock fault code related to ignition or flame.
Cause: The ignition box manages the spark and flame detection; if it fails, the control unit displays a fault code.
Check the manual to confirm that the code indicates an ignition fault and not another cause such as pressure or sensor.
- 04
The boiler is on standby and doesn't even attempt to ignite.
Cause: If the box does not receive or process the start order, the burner never attempts to start.
Check that power is reaching the box before replacing it, as a power failure can cause the same symptom.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.28 | Fault: unsuccessful ignition on start-up. | The S4565AF ignition box (transformer/ionisation) does not deliver a stable spark or does not allow flame detection, so combustion is not established; check HV spark, grounding, and ionisation signal, and test with a contrasting S4565AF. |
| F.29 | Fault: flame loss. | Intermittent fault of the S4565AF transformer/ignition box causes retries and flame extinction; check continuity and performance of the transformer, presence of HV and ionization reading during operation, and rule out with temporary replacement. |
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 S4565AF PCB.
- Catalogue reference
- S4565AF
- Brand
- Saunier Duval
- 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.
- Model
- S4565AF 1007V01 1
- Supply voltage
- 220...240 V ~
- Frequency
- 50/60 Hz
- Power
- 4 VA
- Safety time (Ts)
- 10 s
- CE certification
- CE-0063AP3100/1
- Country of manufacture
- Hungary
- Date/lot code
- 1002 T
- Terminal block diagram
- 12 earth · 11-10 N/LM · 9 · 8-7 LPG · 6-5 G · 4 · 3-2 RSH · 1
Frequently asked questions about the S4565AF PCB.
Does this ignition box S4565AF fit a Saunier Duval Sylva FF 24 E?
What voltage does the ignition box of the Saunier Duval Thelia Twin 28 E operate at?
What does Ts=10s mean in this ignition box?
Is this ignition box suitable for a Saunier Duval Master Twin L 85 E?
What fault does replacing this box resolve in a Saunier Duval Themis Twin 28 E?
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