
Saunier Duval Thelia Twin 28E PCB Ref. 05602200
When you turn on the hot water tap or activate the heating, the Saunier Duval Thelia Twin 28E PCB controls the ignition, burner modulation, pump, and safety features of the boiler. If this part fails, you will notice that the boiler does not start, locks out, or behaves erratically. It is compatible with the Thelia Twin range, including the Thelia Twin 28 E model, among others. It should be replaced when you experience these operational issues.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 05602200
PCB with reference 05602200. A proven compatibility: Thelia Twin 28 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Thelia Twin 28 E | Thelia Twin | 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 the ref. 05602200 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 05602200. 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 05602200 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 turn on, there is no display or lights.
Cause: The PCB does not receive or distribute electrical power to the other components.
Check if the boiler has power and if the main fuse of the installation is in good condition before replacing the PCB.
- 02
An error code appears that repeats after each reset.
Cause: The PCB blocks the boiler because one of the safety signals it receives is not correct.
Locate the code in the manual and check the related sensor before concluding that the PCB is damaged.
- 03
The boiler turns on and off irregularly without changes in demand.
Cause: A relay on the PCB with poor contact intermittently interrupts the signal.
Check if the cut coincides with vibrations or knocks in the boiler; if so, it may be a loose relay on the PCB.
- 04
The thermostat requests temperature but the boiler does not respond.
Cause: The output from the PCB does not send the thermostat's command to the burner.
Check that the thermostat is functioning and that its wires are properly connected to the boiler before replacing 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 05602200 PCB.
- Catalogue reference
- 05602200
- 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
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval THELIA TWIN 28 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.












