Neff F38

Neff error code F38 indicates: Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: NTC temperature sensor short-circuit fault F38; sensor lines shorted together or to ground, reading > 120°C..

The primary root cause for Neff code F38 is: On Neff washers: Melted wire insulation chafing against metal tub frame, internal breakdown in thermistor body, or water bridging connector pins..

To resolve error code F38: Measure NTC resistance (must NOT be 0 Ω or < 500 Ω at room temperature). Inspect wiring for chafing against chassis. Replace NTC sensor. Turn selector to 6 o'clock position, press and hold Spin Speed reduction key, turn selector to 7 o'clock, release key, turn to Off.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Neff code F38 persists, the physical component causing On Neff washers: Melted wire insulation chafing against metal tub frame, internal breakdown in thermistor body, or water bridging connector pins. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.