Saunier Duval SYMSI7.0 Control Board · PCB 0310144400P16 for Themaclassic C 25 E

Main PCB of the Saunier Duval Themaclassic C 25 E, with references S1047000 and S10470.

Type of part: Saunier Duval
Status: Refurbished
internal SKU: PLC040
Warranty: 1 year

VAT included Stock · 1 unit

Compatibility

Compatible Saunier Duval boilers

Saunier Duval. Four confirmed compatibilities: Saunier Duval Themaclassic F 24 E, F 30 E, and F 35 E, and Saunier Duval Themaclassic C 25 EV. There are another 11 models that we are still verifying.

Proven compatibility

Boiler model	Family	Verification
Saunier Duval Themaclassic F 24 E, F 30 E and F 35 E	Saunier Duval	Contrasted
Saunier Duval Themaclassic C 25 EV	Saunier Duval	Contrasted
Saunier Duval Themaplus C 24 E and F 24 E (post-1993), C 25 E, C 30 E, F 25 E, and F 30 E	Saunier Duval	Contrasted
Saunier Duval Isosplit C 24 EV, C 28 E, C 35 E and F 35 E H-MOD	Saunier Duval	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.

Saunier Duval Themaclassic F 25 E	Saunier Duval	Unconfirmed
Saunier Duval Themaclassic C 24 E	Saunier Duval	Unconfirmed
Saunier Duval Thema C 23 E ALV, C 23 EV ALV, C 25 E and C 25 EV	Saunier Duval	Unconfirmed
Saunier Duval Thema F 24 E and F 25 E	Saunier Duval	Unconfirmed
Saunier Duval Themaclassic F 30 E Plus	Saunier Duval	Unconfirmed
Saunier Duval Themaclassic Plus F 24 E, Plus 30 E and F SB 30 E	Saunier Duval	Unconfirmed
Saunier Duval Themafast F 24 E, F 25 E and F 30 E	Saunier Duval	Unconfirmed
Saunier Duval Themafast C 30 E	Saunier Duval	Unconfirmed
Saunier Duval Isosplit F 30 E and F 35 E	Saunier Duval	Unconfirmed
Saunier Duval Isotwin F 24 E	Saunier Duval	Unconfirmed
Saunier Duval Themaclassic C 25 E (C25 E)	Saunier Duval	Unconfirmed

Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.

Guide

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 printing "SYMSI7.0" and the code 0310144400P16 on your boiler's label. The markings "IND 5" and "S0080" are also present.
Check the reference: S1047000 (S10470 in the breakdown). Add SD10265, 0020021121, and 0020043697.
Do not confuse it with the S10620 (interface PCB) or with another version of the S1047000 (0310144400S19, label 0020021122).
If they match, call us at 911 17 77 77 with the model of your boiler.

Diagnosis and fault codes

Symptoms that require diagnosis in the Saunier Duval.

Common symptoms and faults

01
The boiler does not ignite: the fault code F28 appears (ignition fault).
Cause: Failed ignition: it could be gas, ignition, electrode, or PCB.
Have a technician check it.
02
The boiler shuts down during operation and does not restart (fault code F29).
Cause: Gas cut-off, flue gas recirculation, condensates, or faulty grounding.
Have a technician check it.
03
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.
04
The boiler does not ignite when starting and fault code F.28 appears.
Cause: Insufficient gas, condensate siphon blocked or failed ignition.
Have a technician check the gas, the siphon, and the electrode. Do not touch the gas valve.
05
The flame goes out during operation and the boiler tries to ignite several times.
Cause: Dirty ionization electrode, flue gas recirculation or gas cut-off.
Have a technician check the electrode, the flue gases, and the gas supply.
06
Fault codes F.00, F.01, F.10 or F.11 appear on the screen.
Cause: Loose sensor connector, interrupted wiring harness, or faulty NTC sensor.
Have a technician check the connectors first and then the sensor.
07
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.

Fault codes Saunier Duval that require diagnosis

Code	Fault	Technical checks
F00	Return temperature sensor (NTC2) disconnected.	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.
F01	Return temperature sensor (NTC5) disconnected.	Just like the F00: check the connector and, if it persists, have a technician check it.
F27	Flame detection fault: the flame control is not reliable.	If it occurs when turning on or off, have a technician check it: it could be moisture in the electronics or the flame control.
F28	Ignition fault: the burner does not ignite.	If it repeats, have a technician check it: it could be the gas, the ignition, or the PCB.
F29	Flame loss during operation.	If it repeats, have a technician check it: it could be a gas cut-off, flue gas recirculation, or a faulty ground connection.
F61	Gas valve activation fault.	Have a technician check it: it could be the wiring of the gas valve, its coils, or the electronics.
F62	The gas valve does not close in time after the flame goes out.	Have a technician check it: the gas valve or the PCB are the suspects.
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.
F.10	Short circuit in the supply temperature sensor (inlet).	Have a technician check the sensor and the wiring harness. Only point to the PCB if the sensor and wiring are fine.
F.11	Short circuit in the return temperature sensor.	Have a technician check the sensor and the wiring harness. Only point to the PCB if the sensor and wiring are fine.

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 data

Saunier Duval

Uniclima internal SKU: PLC040
Brand: Saunier Duval
Type of part: Saunier Duval
Units in stock: 1 unit
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.

Marked entry: ALIM 230V
Inventory — Indicated reference: 0020021121
Inventory — Driver subcomponent: TOSHIBA ULN2803APG
Inventory — Subcomponent condenser X2: 0.22 μF; 250 V~
Inventory — Flammability marking PCB: 94V-0
Inventory — Auxiliary reference / indicated status: 0310144400P16 · Spain · Electronic version S10470 · Spain · Equivalent SD10265 · Spain · Equivalent S1047000 · France · Same reference 0020043697 · Romania · Country reference S1047000 · Italy · Same reference S1047000 · Germany · Same reference
Inventory — Marked code: IND 5; S0080
Data according to — Power supply: 230 V
Identification — Marked designation: SYMSI7.0
Identification — Marked code: 0310144400P16
Identification — Marked code: IND 5
Identification — Marked code: S0080
Marked entry: ALIM 230V
Inventory data — Indicated reference: 0020021121
Inventory data — Driver subcomponent: TOSHIBA ULN2803APG
Inventory data — Subcomponent condenser X2: 0.22 μF; 250 V~
Inventory data — PCB flammability marking: 94V-0
Inventory data — Auxiliary reference / indicated status: 0310144400P16 · Spain · Electronic version
Inventory data — Auxiliary reference / indicated status: S10470 · Spain · Equivalent
Inventory data — Auxiliary reference / indicated status: SD10265 · Spain · Equivalent
Inventory data — Auxiliary reference / indicated status: S1047000 · France · Same reference
Inventory data — Auxiliary reference / indicated status: 0020043697 · Romania · Country reference
Inventory data — Auxiliary reference / indicated status: S1047000 · Italy · Same reference
Inventory data — Auxiliary reference / indicated status: S1047000 · Germany · Same reference
Inventory data — Marked code: IND 5; S0080
Pending applications to verify: THEMACLASSIC C25 E — compatibility mentioned; pending external confirmation.

Before purchasing

To confirm: Saunier Duval Themaclassic F 25 E:
To confirm: Saunier Duval Themaclassic C 24 E — 1 origin:
To confirm: Saunier Duval Thema C 23 E ALV, C 23 EV ALV, C 25 E and C 25 EV:
To confirm: Saunier Duval Thema F 24 E and F 25 E — 1 origin:
To confirm: Saunier Duval Themaclassic F 30 E Plus — 1 origin:
To confirm: Saunier Duval Themaclassic Plus F 24 E, Plus 30 E and F SB 30 E:
To confirm: Saunier Duval Themafast F 24 E, F 25 E and F 30 E — 1 origin
To confirm: Saunier Duval Themafast C 30 E — 1 source: spare parts catalog for the C 30 E
To confirm: Saunier Duval Isosplit F 30 E and F 35 E — 1 origin:
To confirm: Saunier Duval Isotwin F 24 E — 1 origin:
Not compatible or excluded at source: Saunier Duval Isofast Condens F 35 E — Its official parts list shows a different PCB: S10400
Do not confuse: S10620 — "Interface printed circuit" of the Themaclassic C 25 E (it is written S1062000) — It is not the main PCB (S1047000).
Do not confuse: S10400 — "Printed circuit board" from the official breakdown of the Isofast Condens F 35 E — Another version (Condens): it is not S10470.
S10470 in a spare parts catalog; S1047000; 0310144400P16; SYMSI 7.0 with 0310144400P16, and 00310144400p16 (with one extra 0). gives SYMS17.0, 0310144400520, IND 06, 0310144400S19, IND 14.
Pending registered applications to confirm by model, variant, or programming: Saunier Duval Themaclassic C 25 E (C25 E).

Frequently Asked Questions

Frequently asked questions: Saunier Duval

How do I identify the SYMSI7.0 PCB and what codes should I compare?

Look for the silkscreen "SYMSI7.0" and the circuit code 0310144400P16. It also includes the markings "IND 5" and "S0080". Additionally, compare the reference S1047000, which is written as S10470 in one catalog.

Is it compatible with my Themaclassic C 25 E?

Check the status of each model in the compatibility sections; the pending variants are not validated. Registered: for the Themaclassic C 25 E. A spare parts catalog lists S10470 as "Printed circuit," and Registered designation: S1047000. Also compare SYMSI7.0 and 0310144400P16.

What other boilers use this PCB?

Check the status of each model in the compatibility sections; the pending variants are not validated. Registered: for the Themaclassic C 25 E. With the S1047000, they add the Themaclassic F 24 E, F 30 E, F 35 E, and C 25 EV, six Themaplus, and four Isosplit. For other Thema, Themafast, and Isotwin there is 1 or per model, and Thematek and Isofast only appear by family: compare the codes.

What do SYMSI7.0, 0310144400P16, S1047000 and the other references mean?

SYMSI7.0 is the name of the PCB and 0310144400P16 is its electronic version. S1047000 is the Saunier Duval reference (S10470 in the breakdown). It indicates that S10470 and SD10265 are equivalent in Spain and that S1047000 has the same price in France, Italy, and Germany; 0020043697 is the one for Romania and 0020021121 is the indicated one.

What similar PCBs could be confused with this one?

With the S10620, the interface PCB of the Themaclassic C 25 E (referred to as S1062000). In the Isofast Condens F 35 E, the official parts list provides another PCB, the S10400. The S1047000 is sold in another version (0310144400S19, label 0020021122, IND 14): compare the circuit code.

What should I check before ordering the PCB?

Please compare the references of the current PCB before ordering it. Compare them with those of this part: SYMSI7.0, 0310144400P16, and S1047000.

Who should install it?

A qualified technician: indicates that it should be done by a professional and the PCB operates at 230 V («ALIM 230V»). Any questions? Send us a photo of the label and the specification plate of the boiler from Contact.

How to identify this PCB?

Compare the silkscreen, the distribution of the connectors, and the exact variant of the circuit with the photographs.

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Saunier Duval SYMSI7.0 Control Board · PCB 0310144400P16 for Themaclassic C 25 E