Wine cooler beeps and displays F1, cabinet not cooling properly or temperature fluctuates widely.

Safety first: Disconnect the wine cooler from mains power before removing panels or handling wiring. Use an anti-static wrist strap when touching electronic boards.

Steps to check and address F1:

• Power reset: Unplug the unit for 5 minutes, then reconnect. If F1 returns, continue with diagnosis.
• Access the cabinet thermistor: Inside the wine compartment, locate the small plastic sensor cover on the rear or side wall. Remove any shelves blocking access and gently unclip or unscrew the cover.
• Inspect the sensor and wiring: Check that the thermistor probe is firmly seated in its holder and that the two‑wire harness is not pinched, cut, or corroded. Reseat the connector at the sensor if accessible.
• Check resistance (for technicians or experienced DIYers): With power disconnected, unplug the thermistor from the harness and measure resistance with a multimeter. At around 20°C (68°F), most Fisher & Paykel NTC thermistors will read in the tens of kΩ range (consult the service sheet for exact values). If the reading is open (OL) or shorted (near 0 Ω), the sensor is faulty.
• Inspect connection at the main PCB: Remove the rear service panel at the back or base of the unit to access the main control board. Trace the thermistor harness to the board and ensure the plug is fully seated and free of corrosion or moisture.
• Replace the thermistor if defective: If resistance is out of spec or intermittent when you gently flex the wire, replace the cabinet temperature sensor with a Fisher & Paykel–compatible thermistor assembly.
• Control board check: If a known-good thermistor is installed and wiring is intact but F1 persists, the main control board may have a failed sensor input circuit and should be replaced by a qualified technician.