Digital display shows E1 and cabinet is not cooling properly or temperature is erratic.

Safety first: Unplug the Phiestina wine cooler from the wall outlet before removing any panels. Do not work inside the cabinet with power connected.

• Power reset: Unplug the unit for 5–10 minutes, then plug it back in to see if the E1 code clears. If it returns, continue.
• Locate the cabinet sensor: Inside most Phiestina wine coolers, the cabinet NTC sensor is a small probe or plastic-covered bulb mounted on the rear or side wall, often near the middle shelf area, with thin wires disappearing into the liner.
• Inspect the sensor and wiring: Check that the sensor is firmly clipped in place and that its wire is not pinched, cut, or chewed. Look for discoloration or corrosion at the sensor tip.
• Access the control board: Remove the rear lower service panel (usually held by Phillips screws) to access the main control board. Trace the sensor harness from the cabinet to the board and ensure the plug is fully seated and not corroded.
• Basic resistance check (if you have a multimeter): With the unit unplugged, disconnect the sensor from the board and measure resistance across the two sensor leads. A typical NTC sensor will read between ~5–50 kΩ depending on temperature. An open circuit (OL) or 0 Ω indicates a failed sensor.
• Replace the sensor if faulty: Order a compatible "Phiestina cabinet temperature sensor (NTC)" for your exact model. Remove the old sensor by unclipping it inside the cabinet and gently pulling the wire through. Route the new sensor wire along the original path, avoiding sharp edges, and reconnect it to the control board.
• Reassemble and test: Reinstall the rear panel, plug the cooler back in, and verify that the E1 code is cleared and that the temperature display responds normally.