Ariston A23 MFFI PCB Ref. 953770
When you turn on the hot water tap or start the heating, the Ariston A23 MFFI PCB (control board) Ref. 953770 is responsible for controlling the ignition and modulation of the burner, as well as managing the pump and the 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 models such as A 23 MFFI and A 27 MFFI from the Ariston A / Euro Combi MFFI range, among others. It is recommended to replace it when you experience these symptoms or if the boiler shows unusual operation.
VAT included
Consult via WhatsAppAriston boilers compatible with reference 953770
PCB with reference 953770. Two confirmed compatibilities: A 23 MFFI and A 27 MFFI.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Ariston A 23 MFFI | Ariston A / Euro Combi MFFI | Contrasted |
| Ariston A 27 MFFI | Ariston A / Euro Combi MFFI | 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. 953770 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 953770. 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 953770 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 ignite and the panel is off.
Cause: If the PCB does not receive power, it cannot activate any circuit.
Check if the main fuse of the boiler and the fuse of the PCB are blown.
- 02
An error code appears on the display that repeats after resetting.
Cause: The PCB blocks the boiler when it detects a persistent fault in the ignition, the flame, or any sensor.
Note the exact code and check the ignition/ionization electrode and its wiring.
- 03
The boiler ignites for hot water but not for heating, or vice versa.
Cause: The PCB controls both circuits separately; if one fails, it does not send the corresponding command.
Check that the room thermostat is sending a demand signal before considering that the PCB is faulty.
- 04
The burner ignites and extinguishes repeatedly without stabilizing (short cycles).
Cause: The PCB adjusts the flame according to the signals it receives; if it fails, it does not modulate the power properly and causes cycles.
Check the flue and clean the burner before ruling out 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 Ariston 953770 PCB.
- Catalogue reference
- 953770
- Brand
- Ariston
- Type of part
- PCBs (control boards)
- Units in stock
- 5 units
- 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.
- Reference printed on main label
- 953770
- Main chip (marking)
- NG TW21WAT TW2CC2S-01
Frequently asked questions about the PCB 953770
Does the reference 953770 from the data sheet match the label on this Ariston PCB?
Does this PCB work for an Ariston A 23 MFFI boiler?
Is this PCB compatible with the Ariston A 27 MFFI model?
What chip is marked on the PCB Ref. 953770 of the EuroCombi A23 MFFI?
How many models are compatible with this PCB?
What fault codes does this PCB have?
Spare parts related to Ariston Ariston A / Euro Combi MFFI
