Ariston F5E1 — Refrigerator / Freezer
[ACTIVE]Ariston Active Oxygen Total NoFrost Refrigerator / Freezer: Diagnostic code F5E1 indicates French door interlock switch or vertical mullion heater open; condensation forms on cabinet flange.
On Ariston refrigerators (Ariston Aqualtis and HD Defrost electronic platform architecture): Defective magnetic reed switch in liner top or burned foil heater inside hinged mullion flap. Heater resistance: 70–120 Ω (115V) or 220–350 Ω (230V).
Disconnect power. Check door reed switch operation with magnet and multimeter continuity. Disconnect 2-pin mullion connector at bottom hinge: measure heater resistance (must be 70–350 Ω). Replace vertical mullion assembly if open circuit. Hold Alarm Reset pad for 5 seconds until audible alert ceases and active cooling LED illuminates steady.



