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Neff • Central Diagnostic Dictionary

195 Verified Codes in Database

Neff Error Codes & Diagnostics

Access our premium database of error codes, common faults, and professional repair solutions for Neff appliances.

Luxury front-loading washing machine in brushed titanium with illuminated dark glass drum

CodeAppliancesFault / DiagnosticsRepair InstructionsAction

E34

Washing Machine

Door Lock Mechanism & Safety Interlock

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Door interlock failed to lock E34; solenoid pulse sent but lock mechanism fails to engage or confirm locked contact.

On Neff washers: Jammed lock slider mechanism, broken bimetal / solenoid lock coil, bent door hinge preventing full engagement, or blown lock triac.

Inspect door latch alignment and hinge tightness. Test door lock mechanism resistance across pins 1 and 3 (~180–240 Ω). Replace door interlock switch. 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.

E35

Washing Machine

Water Level Pressure Switch & Air Dome

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Door interlock failed to unlock E35; door remains locked at cycle end, unlock pulse fails to release mechanism.

On Neff washers: Mechanically jammed slider inside door latch, high tub water level preventing safe unlock command, or shorted unlock coil.

Pull emergency manual door release strap inside bottom filter flap. Check for standing water in tub and drain manually. Replace door interlock assembly. 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.

E36

Tumble Dryer

Door Lock Mechanism & Safety Interlock

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Door interlock switch open during program E36; door catch pops open or microswitch contacts bounce during rotation.

On Neff tumble dryers: Worn plastic door catch strike, loose door hinge screws, or pitted microswitch contacts inside door latch.

Adjust and tighten door hinge screws. Inspect door latch strike for wear. Test microswitch continuity when door is pressed shut (< 0.5 Ω). Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E36

Washing Machine

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Door interlock sensing circuit fault E36; feedback line to microcontroller remains inconsistent with lock driver state.

On Neff washers: Burnt SMD sense resistor on control board, high contact resistance on door switch plug, or damaged driver triac.

Disconnect mains power. Measure resistance across door interlock switch contacts. Inspect power board for burnt tracks near door triac. 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.

E37

Washing Machine

NTC Temperature Sensor & Thermistor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: NTC sensor resistance open or high deviation E37; temperature value reads unrealistic cold (<-10°C) during wash.

On Neff washers: Internal fracture in NTC ceramic bead, broken wire in lower wiring loom under tub vibrations, or loose sensor connector plug.

Measure NTC resistance directly at heater terminals (nominal ~10 kΩ at 20°C, ~4.9 kΩ at 40°C). Check wire continuity up to main PCB connector. 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.

E38

Washing Machine

NTC Temperature Sensor & Thermistor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: NTC temperature sensor short-circuit fault E38; sensor lines shorted together or to ground, reading > 120°C.

On Neff washers: Melted wire insulation chafing against metal tub frame, internal breakdown in thermistor body, or water bridging connector pins.

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.

E42

Washing Machine

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Uncontrolled motor runaway speed error E42; drive motor revs instantly to maximum RPM without speed ramping control.

On Neff washers: Shorted motor control triac on power module, defective optocoupler gate driver, or loose tachometer magnet on motor shaft.

Inspect motor tail shaft to ensure tachometer magnet is firmly threaded. Test motor triac pins A1 and A2 on PCB (must not be shorted 0 Ω). 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.

E43

Washing Machine

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Motor stalled / drum rotation mechanically locked E43; drive motor energized but drum cannot rotate.

On Neff washers: Foreign object (bra underwire, coin, sock) jammed between inner drum and tub, seized drum tub bearings, or derailed poly-V drive belt.

Disconnect mains. Rotate drum by hand to check for stiffness. Remove heating element to extract jammed objects from bottom of tub. Check belt. 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.

E44

Washing Machine

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: No bidirectional motor rotation E44; drum only turns in one direction during wash tumble, reversing relay stuck.

On Neff washers: Welded contacts or defective coil on motor reversing relay on power control board, or broken track on stator harness.

Inspect motor reversing relays on control board. Measure coil resistance of both reversing relays (nominal ~360–420 Ω). Replace power module if relay is welded. 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.

E47

Washing Machine

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Motor inverter power module (IPM) overtemperature E47; thermal sensor on aluminum heatsink trips thermal shutdown.

On Neff washers: Severe drum overload, high ambient temperature, dried thermal paste between IPM bridge and heatsink, or dust clogging cooling airflow.

Allow inverter module to cool for 30 minutes. Reduce laundry load. Inspect aluminum heatsink, clean dust, and reapply high-grade non-conductive thermal paste. 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.

E48

Washing Machine

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Inverter DC bus undervoltage detected E48; rectified high-voltage DC rail drops below minimum threshold (< 200V DC).

On Neff washers: Severe AC mains voltage dip, degraded DC bus bulk electrolytic capacitors, or high resistance on AC filter terminals.

Check mains voltage at wall socket under load (> 207V AC). Measure DC bus voltage across filter capacitors (nominal ~310–330V DC). Replace inverter board. 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.

E49

Washing Machine

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Inverter DC bus overvoltage detected E49; regenerated motor braking energy or AC mains surge exceeds safety limit (> 400V DC).

On Neff washers: Heavy out-of-balance drum deceleration dumping excessive back-EMF, open braking resistor circuit, or lightning surge on AC line.

Check mains line voltage. Measure braking dissipation circuit components on inverter board. Inspect drum suspension springs and dampers to reduce violent sway. 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.

E50

Washing Machine

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: 3-phase BLDC motor drive hardware fault E50; inverter bridge reports phase current imbalance or shorted IGBT.

On Neff washers: Shorted phase winding in permanent magnet brushless motor, damaged motor power connector, or blown IGBT output switch on PCB.

Disconnect motor plug. Measure 3-phase winding resistances between U-V, V-W, U-W (must be perfectly balanced ~4.5–5.5 Ω). Replace motor or inverter module. 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.

E51

Tumble Dryer

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Motor inverter IPM short circuit E51; drive motor / compressor inverter trips instantly on overcurrent.

On Neff tumble dryers: Shorted IGBT bridge transistor in inverter module, seized drum motor, or short-circuit in compressor motor winding.

Disconnect mains. Measure 3-phase resistance of compressor and motor windings. Inspect inverter PCB for burnt IGBTs. Replace inverter module. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E52

Tumble Dryer

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Drum drive motor inverter undervoltage E52; DC bus supply voltage drops below minimum operating threshold (< 200V DC).

On Neff tumble dryers: Dip in household AC supply voltage under motor load, weak electrolytic capacitors on inverter board, or poor connection.

Verify AC mains voltage at wall outlet under load (> 210V AC). Measure DC bus voltage on inverter PCB (~310–330V DC). Replace inverter board if low. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E53

Tumble Dryer

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Drum drive motor inverter overvoltage E53; DC bus voltage exceeds upper safety limit (> 400V DC).

On Neff tumble dryers: Energy feedback during sudden drum braking, AC mains power surge, or open braking circuit on inverter board.

Check mains voltage stability. Inspect motor braking circuit on inverter board. Ensure drum rotates without mechanical jamming. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E54

Tumble Dryer

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Heat pump compressor inverter phase imbalance E54; current asymmetry detected across compressor 3-phase motor.

On Neff tumble dryers: Partial winding short circuit in hermetic compressor, loose terminal pin on compressor plug, or failing inverter bridge.

Measure winding resistances between all 3 compressor pins (must be equal, ~12–18 Ω each). Check harness plug tightness. Replace inverter or compressor. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E55

Tumble Dryer

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Compressor rotor locked / stalled E55; heat pump compressor fails to turn over, inverter trips on locked-rotor current.

On Neff tumble dryers: Mechanical seizure of rotary compression scroll, high head pressure due to blocked heat exchanger, or liquid slugging.

Allow system pressures to equalize for 1 hour. Clean all heat exchanger fins thoroughly. If compressor remains seized, sealed refrigeration repair is required. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E56

Tumble Dryer

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Inverter heatsink thermal sensor overtemperature E56; power board temperature exceeds safe operating threshold (> 85°C).

On Neff tumble dryers: Blocked cooling fan air vents in dryer base, heavy fluff accumulation over inverter heatsink, or dried thermal paste.

Vacuum lower air vents and remove fluff from inverter board heatsink. Reapply silicone thermal paste between power transistors and heatsink. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E57

Washing Machine

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Inverter serial D-Bus communication lost E57; main control module loses serial data link to motor inverter module.

On Neff washers: Broken or disconnected communication wiring harness between upper and lower modules, corroded edge connectors, or unpowered inverter.

Inspect 3-wire communication harness linking main PCB to inverter module. Verify 230V AC mains feed to inverter module. Check 5V DC bus pull-up voltage. 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.

E59

Washing Machine

Electronic Control Board (PCB) & Bus Communications

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: 3D Hall acceleration sensor signal missing E59; tub motion sensor fails to report 3-axis vibration data during spin.

On Neff washers: Loose or unplugged connector on 3D sensor mounted on outer tub, damaged wiring harness, or failed accelerometer chip on sensor PCB.

Remove top lid. Inspect 3D sensor bolted to top edge of outer plastic tub. Verify 5V DC supply on pins 1-3. Check wiring loom for fatigue breaks. 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.

E60

Washing Machine

Water Level Pressure Switch & Air Dome

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Flow sensor flow rate out of calibrated bounds E60; discrepancy between flowmeter pulse frequency and pressure rise.

On Neff washers: Partially seized flow turbine wheel, partially blocked pressure switch chamber hose, or water inlet pressure oscillation.

Inspect inline flowmeter and clean turbine chamber. Clean pressure switch air trap and clear any detergent gunk. Verify stable household water pressure. 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.

E61

Washing Machine

Door Lock Mechanism & Safety Interlock

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Abnormal door lock feedback signal E61; door interlock reports unexpected state changes during high-speed rotation.

On Neff washers: Loose door hinge causing strike hook vibration, pitting on internal copper switch contacts inside door interlock, or loose terminal.

Tighten door hinge mounting screws on front panel. Check harness plug fit on door interlock. Replace door interlock assembly if contacts are pitted. 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.

E63

Tumble Dryer

Electronic Control Board (PCB) & Bus Communications

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Microcontroller safety watchdog fault E63; internal microprocessor registers report execution error, halting cycle.

On Neff tumble dryers: Mains electrical transients (switching spike from other equipment), corrupted EEPROM dataset, or degraded power supply filter capacitors.

Power off dryer for 5 minutes to discharge circuit capacitors. Inspect control module for swollen capacitors. Replace main control PCB if fault returns. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E63

Washing Machine

Electronic Control Board (PCB) & Bus Communications

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Functional safety processor watchdog trip E63; internal CPU self-test parity or RAM execution error detected on main PCB.

On Neff washers: Electrostatic discharge (ESD), corrupted EEPROM memory registers, unstable power rail voltage ripple, or damaged microcontroller.

Power down machine at mains for 5 minutes. Inspect power module for ruptured electrolytic capacitors. Replace configured main control PCB. 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.

E67

Washing Machine

Electronic Control Board (PCB) & Bus Communications

Neff N 50 / N 70 / N 90 Efficient SilentDrive washing machine: Configuration variant coding error E67; EEPROM variant data mismatch between user interface and power module.

On Neff washers: Unprogrammed replacement control board installed, corrupted model variant coding block, or incorrect firmware flashing.

Access service mode to enter exact variant coding number from machine rating plate (E-Nr). Re-flash firmware via iService tool or install pre-programmed board. 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.

E71

Tumble Dryer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Compressor discharge temperature NTC sensor error E71; sensor resistance open, shorted, or out of calibration range.

On Neff tumble dryers: Broken lead wire to compressor discharge line sensor, defective NTC element, or poor thermal contact on copper pipe.

Measure discharge NTC resistance (nominal ~20 kΩ at 25°C, ~6 kΩ at 50°C). Verify thermal clip holds sensor tightly to discharge line. Replace sensor. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E72

Tumble Dryer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Evaporator NTC defrost sensor failure E72; temperature sensor on heat pump evaporator coil open or shorted.

On Neff tumble dryers: Corrosion from condensate moisture on sensor pins, pinched lead wire in base tray, or cracked thermistor bead.

Measure evaporator NTC resistance (nominal ~10 kΩ at 25°C, ~28 kΩ at 0°C). Check wiring connector for moisture. Replace evaporator sensor. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E73

Tumble Dryer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Condenser NTC sensor fault E73; temperature sensor on refrigerant condenser coil signal open or short-circuit.

On Neff tumble dryers: Dislodged sensor clip on condenser copper bend, open lead wire in lower harness, or sensor drift due to thermal cycling.

Measure condenser NTC sensor resistance (nominal ~10 kΩ at 25°C, ~3.6 kΩ at 50°C). Check clip attachment to copper tube. Replace NTC if out of spec. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E74

Tumble Dryer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Process air duct NTC sensor error E74; temperature thermistor in front air duct open or shorted.

On Neff tumble dryers: Fluff accumulation insulating sensor tip, broken wire in door frame wiring harness, or defective thermistor element.

Remove front lint filter housing. Clean NTC sensor tip of lint. Measure resistance (nominal ~10 kΩ at 25°C, ~4.9 kΩ at 40°C). Replace if defective. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

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Neff — Complete Error Code Catalog

158 Verified Error Codes

Server-side index of all verified manufacturer error codes for technicians and automated crawlers.

Dishwasher38

E01 E02 E03 E04 E05 E06 E07 E08 E09 E10 E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E24 E25 E26 E27 E28 E29 E30 E31 E3000 E3100 E3200 E6101 E6900 E9001 E9210

Washing Machine48

E34 E35 E37 E38 E42 E43 E44 E47 E48 E49 E50 E57 E59 E60 E61 E67 F16 F17 F18 F19 F20 F21 F22 F23 F25 F26 F27 F28 F29 F31 F34 F35 F36 F37 F38 F42 F43 F44 F47 F48 F49 F50 F57 F59 F60 F61 F63 F67

Tumble Dryer16

E32 E36 E51 E52 E53 E54 E55 E56 E63 E71 E72 E73 E74 E75 E89 E90

Oven / Microwave19

E005 E011 E101 E104 E106 E115 E305 E310 E395 E396 E845 E5116 E5122 Er1 Er2 Er4 Er6 Er8 Key Symbol

Hob / Cooktop36

d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 E0513 E7015 E8207 F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 U1 U2 U3

Refrigerator / Freezer1

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