Ariston Genus ONE / Alteas ONE PCB (control board)
When you turn on the tap or the heating, the Ariston Genus ONE / Alteas ONE PCB (reference S1047000) is responsible for controlling the ignition, burner modulation, and the boiler pump. If it fails, you will notice that the boiler does not start, gets locked, or exhibits erratic behavior. This board is compatible with boilers such as Genus ONE 24, Genus ONE 30, and Genus ONE SYSTEM 12, among others. It is advisable to replace it when errors such as 3 01: EEPROM display error or 3 02: Communication error appear.
VAT included
Consult via WhatsAppAriston boilers compatible with reference 65120830 01
PCB with reference 65120830 01. 11 verified compatibilities: Genus ONE 24 and Genus ONE 30.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Ariston Genus ONE 24 | Genus ONE | Contrasted |
| Ariston Genus ONE 30 | Genus ONE | Contrasted |
| Ariston Genus ONE 35 | Genus ONE | Contrasted |
| Ariston Genus ONE NET 24 | Genus ONE NET | Contrasted |
| Ariston Genus ONE NET 30 | Genus ONE NET | Contrasted |
| Ariston Genus ONE NET 35 | Genus ONE NET | Contrasted |
| Ariston Genus ONE SYSTEM 12 | Genus ONE SYSTEM | Contrasted |
| Ariston Genus ONE SYSTEM 18 | Genus ONE SYSTEM | Contrasted |
| Ariston Genus ONE SYSTEM 24 | Genus ONE SYSTEM | Contrasted |
| Ariston Genus ONE SYSTEM 30 | Genus ONE SYSTEM | Contrasted |
| Ariston Genus ONE SYSTEM 35 | Genus ONE SYSTEM | 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. 65120830 01 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 65120830 01. 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 65120830 01 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 shows no signs of life: no indicators, no display, no noise.
Cause: The PCB distributes the main power supply to the entire boiler; if the input fails, nothing starts.
Measure with a multimeter that 230V is present between the terminals N and L before declaring the PCB faulty.
- 02
On the display or in the Ariston Net app, a fault code appears that does not match any actual boiler fault.
Cause: The control unit interprets the signals from the sensors, and if it degrades, it generates alerts that mislead from the real source.
Check the code against the Genus ONE/Alteas ONE manual before replacing the PCB: some point to the flue sensor or the pressure switch.
- 03
The pump runs continuously, even with the boiler turned off.
Cause: A relay on the PCB that gets stuck keeps the pump output constantly activated.
Disconnect the connector of the pump with the boiler at rest: if there is still power, the relay is stuck on the PCB.
- 04
The gas valve does not receive an opening command even though there is a heat demand and ignition spark.
Cause: The PCB is the one that sends the electrical signal to the gas valve at the moment of ignition; if that output fails, the gas doesn't reach it.
Check first that the gas valve is receiving voltage at its connector during the ignition attempt, using a multimeter.
Fault codes for Ariston that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 3 01 | EEPROM display error | The EEPROM memory integrated into the display PCB (GUI) is damaged or corrupted; to verify, check 5 V and bus on the display connector and test with another PCB 65120830 01/official reprogramming if applicable. |
| 3 02 | Communication error | The display board (GUI) loses communication with the main board (GIU) due to an electronic fault in the display board itself; check the BUS/flat wiring and power supply to the display, and if they are correct, temporarily replace the board 65120830 01 to confirm. |
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 Ariston PCB 65120830 01
- Catalogue reference
- 65120830 01
- Brand
- Ariston
- 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.
- Supply voltage
- 230 Vac
Frequently asked questions about the PCB 65120830 01
What supply voltage does the Ariston Genus ONE PCB Ref. 65120830 require?
Does this PCB work for a Genus ONE System 24?
Is the PCB 65120830 compatible with the Alteas ONE 35?
Spare parts related to Ariston Genus ONE SYSTEM
