Ariston PCB T2LLS 23 MFFI Ref. 65100248
RefurbishedAristonPCBs (control boards)

Ariston PCB T2LLS 23 MFFI Ref. 65100248

70 €VAT includedIn stock · 3 units

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks out, or the display is unresponsive. Compatible with Microtec 23 MFFI, T2 23 MFFI (LLS), Microtec 23 MI (ref. 65100248). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
65100248
Brand
Ariston
Type of part
PCBs (control boards)
Available units
3 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 65100248) equips these models. Verified compatibility; check the reference before purchasing.

Microtec / T2 (range 23 MFFI/MI)

  • Microtec 23 MFFI
  • T2 23 MFFI (LLS)
  • Microtec 23 MI
  • T2 23 MI

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
301EEPROM/display error (internal electronic memory).PCB fault (EEPROM corruption or logic/power failure of the PCB) prevents reading the memory; check 5V/12V voltages on the board, connectors/display and, if possible, test/replace the PCB.
302Communication error main PCB–display/interface.The PCB fails in the data bus with the display/interface (fault in the PCB or its power/signal); check the harness and connectors, continuity and voltages, and signal oscillation between boards; if it persists, replace the PCB.
303Main PCB error.Internal fault of the PCB (microcontroller, primary power supply, or logic); check stabilization of 5V/12V, inspect components/relays, and, as a conclusive test, replacement/testing of the board.
304Too many resets (>5 in 15 minutes).Repeated resets originating from the control board itself (watchdog/power drops of the PCB); check the PCB power supply for ripple/drops, connections, and conditions causing reset; if installation is ruled out, replace the PCB.
305Main PCB fault (variant).Internal anomaly of the PCB (control/power); check logical voltages, relays, and tracks; confirmation by replacing the board.
306Main PCB fault (variant).Internal fault of the PCB that blocks the logic; check power supply and internal communication; if there are no other external causes, replace the PCB.
307Main PCB fault (variant).Internal fault of the PCB; check control lines and internal sources; definitive diagnosis by PCB exchange.
How do I know if this PCB is for my boiler?
Verify the reference 65100248 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.
Is the boiler not igniting, locking out, or is the control board unresponsive?
After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

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