Saunier Duval SYMSI 7.0 PCB · 0310144400P16 for Themafast F25 E H-MOD
To confirm: It is the control board of the boiler: it is responsible for ignition, modulation, safety, and temperature management. It is suspected if the boiler does not ignite or respond, restarts, or shows faults without a physical cause.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- internal SKU
- PLC106
- Warranty
- 1 year
SUNG WEI compatible boilers
PCB. Three confirmed compatibilities: Saunier Duval Themafast F25 E H-MOD and Saunier Duval Themaclassic F25E. There are another 5 models that we are still verifying.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| SUNG WEI Saunier Duval Themafast F25 E H-MOD | SUNG WEI | Contrasted |
| SUNG WEI Saunier Duval Themaclassic F25E | SUNG WEI | Contrasted |
| SUNG WEI F1LA | SUNG WEI | Contrasted |
Models pending verification
These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.
| SUNG WEI Saunier Duval Themafast F 30 E H-MOD | SUNG WEI | Unconfirmed |
|---|---|---|
| SUNG WEI Saunier Duval Themafast F 24 E | SUNG WEI | Unconfirmed |
| SUNG WEI Saunier Duval Themaclassic C 24 E, C 25 E, F 24 E and AS 24/25/30 E | SUNG WEI | Unconfirmed |
| SUNG WEI Saunier Duval Themafast F25E and F30E | SUNG WEI | Unconfirmed |
| SUNG WEI Saunier Duval Themafast C 25 E | SUNG WEI | Unconfirmed |
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 it is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Look for the silkscreen 0310144400P16 and the designation SYMSI7.0 (or SYMSI 7.0) in the circuit.
- To confirm: 0310144400N14 and 0310144400015 are other versions, not this one. 0310144400T01 appears alongside S10470 and does not connect to the P16.
- Count the relays and check their position and that of the connectors: under the same code there are different versions.
- Look at the model on your boiler's PCB. Confirmed: Themafast F25 E H-MOD, C 25 E, Themaclassic F25E and F1LA. Unconfirmed: Themafast F 24 E and F 30 E H-MOD.
- If they match, call us at 911 17 77 77 with the model of your boiler.
Symptoms that require diagnosis on the PCB
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 ignite or respond to any commands.
Cause: it is associated with the SYMSI 7.0 PCB of the Themafast.
- 02
Errors on the screen without a physical cause or restarts in the middle of a heating cycle.
Cause: According to that, they may come from the PCB.
- 03
Stuck relays, burnt tracks or oxidation in the circuit.
Cause: They can be seen when looking at the PCB.
- 04
The boiler does not ignite or turns off during operation and does not ignite again (fault codes F28 or F29).
Cause: Ignition fault: it may be due to lack of gas, gas meter, ignition or PCB.
Put the boiler out of service, wait 5 seconds, and then restart it. If the issue persists, have it checked by the official SAT.
- 05
The red pilot light is flashing and a fault code F followed by a number appears on the screen: the boiler stops due to an anomaly.
Cause: The PCB has detected an anomaly. The number indicates which one: ignition, flue, sensors, or circulation.
Reset it: turn off the boiler, wait 5 seconds, and turn it back on. If the fault persists, have it checked by the official technical service.
Códigos de error SUNG WEI que requieren diagnóstico
| Code | Fault | Technical checks |
|---|---|---|
| F28 | Ignition fault: the burner does not ignite. | Put the boiler out of service, wait 5 seconds, and then restart it. If the issue persists, have the official SAT check it: it could be the gas or the ignition. |
| F29 | Ignition failure after losing the flame during operation. | Just like the F28: put the boiler out of service, wait 5 seconds, and then restart it. If the issue persists, have it checked by the official service. |
| F15 | Flame detection fault: there is a flame with the burner off. | If it occurs when turning off or on, have a technician check it: it points to the PCB or the flame control. |
| F5 | Fault of the heating flow sensor (NTC2). | Check if the sensor connector is loose. If it persists, have a technician check it: it could be the sensor, the cable, or the PCB. |
| F1 | Ignition fault, possible gas supply issue (in Themafast C; in NOx it appears as F28 or F29). | Put the boiler out of service, wait 5 seconds, and then restart it. If the issue persists, have a technician check it. |
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.
Technical sheet: SUNG WEI
- Uniclima internal SKU
- PLC106
- Brand
- SUNG WEI
- Type of part
- PCBs (control boards)
- Units in stock
- 2 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.
- Manufacturer marking on PCB
- SUNG WEI 06V0-A
- Power/connection markings
- ALIM 230V; TA 230V (silkscreen of the PCB)
- Subcomponent: relay
- OMRON G5LA-1A; DC24V coil
- Part label identifier
- 0020021125
- Source of additional data
- Declared information; auxiliary references and applications without equivalent from the accredited manufacturer.
- Inventory — Relay subcomponent
- OMRON G5A-1A; DC24V coil
- Inventory — Marked code
- 0020021125; 07/44; IND 5; S0080; SD00081C
- Additional information — Power supply
- 230 V · 50 Hz · P16 V1
- Additional information — Relays
- 4 (version P16 V1) ·
- Registered reference
- 0310144400P16
- Registered model
- SYMSI7.0
- Additional markings
- OMRON G5A-1A relay, DC24V coil; also OMRON G5LA-1A, without assigned coil voltage. Connections ALIM 230V/TA 230V. Other codes: 0020021125; 07/44; IND 5; S0080; SD00081C.
- Pending applications to verify
- Saunier Duval THEMAFAST C 25 E — compatibility mentioned; pending verification by variant. Statements from (documentation 10/23/2026; revision 10/24/2026), pending confirmation by manufacturer. Check reference, revision, and serial number before use: Themafast F 24 E · Themafast F 25 E H-MOD · Themafast F 30 E H-Mod · Themafast F25E · Themafast F30E · Themafast F30E (2004)
- To confirm: Saunier Duval Themafast F 30 E H-MOD —, with the P16 (the list is the same for the 015), with S10470 or N14.
- To confirm: Saunier Duval Themafast F 24 E — it is given with the P16 (and repeats the list for the 015). It also names "F 24 E" with the P16, but in a general list without family: it doesn't count. (S10470) and (N14), with other codes.
- To confirm: Saunier Duval Themaclassic C 24 E, C 25 E, F 24 E and AS 24/25/30 E — with SYMSI 7.0:; gives S10470
- To confirm: Saunier Duval Themafast F25E and F30E — with SYMSI 7.0: (P16) and (N14)
- Do not confuse: 0310144400N14 — Another version SYMSI 7.0, which is compatible with Themafast F24 E, F25 E H-MOD and F30 E H-MOD — Different termination: compare relays and connectors.
- Do not confuse: 0310144400015 — Version V4 with 3 relays (2+1), — It is not the P16: the P16 V1 has 4 relays.
- 0020021125 and SD00081C come from the label of a unit; they are not mentioned.
- and they join the P16 with the SYMSI 7.0 from Saunier Duval. Without official breakdown and with other versions (N14, 015): compare the code in the unconfirmed boilers.
- Pending registered applications to confirm by model, variant, or programming: Saunier Duval Themafast C 25 E.
Frequently asked questions about the PCB (control board)
How do I identify this PCB?
Is it compatible with my Themafast F25 E H-MOD, Themafast C 25 E, Themaclassic F25E or F1LA?
Is it compatible with the Themafast F 30 E H-MOD or the F 24 E?
What is the difference between the P16 and the N14, 015, or T01 endings?
What do the codes on the PCB mean?
What symptoms point to this PCB and who should install it?
How to identify this PCB?
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