Ariston F2E2 — Refrigerator / Freezer
[ACTIVE]Ariston Active Oxygen Total NoFrost Refrigerator / Freezer: Diagnostic code F2E2 registers user interface supply voltage abnormal; dispenser screen flickers or resets erratically.
On Ariston refrigerators (Ariston Aqualtis and HD Defrost electronic platform architecture): Supply rail dropped below 10.5V DC or spiked above 14.5V DC due to filter capacitor degradation on main PCB.
Isolate mains. Measure DC voltage at main board UI connector with digital voltmeter: nominal is 12.0V DC (±0.5V). If reading is under 10.5V DC under load, replace main power board. Hold Alarm Reset pad for 5 seconds until audible alert ceases and active cooling LED illuminates steady.



