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Airlux • Central Diagnostic Dictionary

75 Verified Codes in Database

Airlux Error Codes & Diagnostics

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

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

CodeAppliancesFault / DiagnosticsRepair InstructionsAction

P7

Air Conditioner / Heat Pump

NTC Temperature Sensor & Thermistor

IPM sensor circuit malfunction

Defective NTC Temperature Sensor Probe (Thermistor), open/short circuit in the wiring harness, or faulty connector on the ntc temperature sensor & thermistor.

1. Disconnect 230V mains power. 2. Unplug NTC thermistor harness connector. 3. Measure NTC resistance with multimeter across pins 1-2 (nominal: 4.8kΩ–12kΩ at 20°C–25°C; resistance should drop smoothly when probe tip is warmed). Replace sensor if open circuit (OL). 4. Reset: Power cycle reset: Disconnect appliance from 230V mains for 3 minutes. Press and hold Start/Power for 10 seconds while unplugged, then reconnect power.

P8

Air Conditioner / Heat Pump

Drive Motor, Inverter & Tachometer Sensor

IPM high temperature protection

Defective 3-Phase Motor Windings / Tacho Generator / Carbon Brushes, open/short circuit in the wiring harness, or faulty connector on the drive motor, inverter & tachometer sensor.

Check outdoor fan, heat sink, and ensure normal airflow around inverter board.

Pc

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

Current detect circuit malfunction or Current sensor malfunction

Defective PCB Power Supply Rails & DC Bus Filter Capacitors, open/short circuit in the wiring harness, or faulty connector on the electronic control board (pcb) & bus communications.

1. Disconnect 230V mains power for 3 minutes. 2. Inspect wire harness and edge connectors on control board for loose pins or oxidation. 3. Inspect mechanical linkages and sensors associated with subsystem. 4. Reset: Power cycle reset: Disconnect appliance from 230V mains for 3 minutes. Press and hold Start/Power for 10 seconds while unplugged, then reconnect power.

PH

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

Over voltage protection for PN

Component fatigue, sensor feedback out of tolerance, wiring harness connector discontinuity, or electronic control board glitch.

Check incoming power supply voltage is not too high.

PL

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

Low PN voltage protection

Component fatigue, sensor feedback out of tolerance, wiring harness connector discontinuity, or electronic control board glitch.

1. Disconnect 230V mains power for 3 minutes. 2. Inspect wire harness and edge connectors on control board for loose pins or oxidation. 3. Inspect mechanical linkages and sensors associated with subsystem. 4. Reset: Power cycle reset: Disconnect appliance from 230V mains for 3 minutes. Press and hold Start/Power for 10 seconds while unplugged, then reconnect power.

PU

Air Conditioner / Heat Pump

Drive Motor, Inverter & Tachometer Sensor

Capacitor charge malfunction

Defective 3-Phase Motor Windings / Tacho Generator / Carbon Brushes, open/short circuit in the wiring harness, or faulty connector on the drive motor, inverter & tachometer sensor.

Check inverter board capacitor and charging circuit.

SAFE

Oven / Microwave

General System & Mechanical Integration

Oven controls are unresponsive, 'SAFE' is displayed

The child lock feature has been activated.

Consult the user manual to find the specific button combination to deactivate the child lock. It is typically a long press of a specific button or two buttons simultaneously.

U1

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

Compressor phase current detection circuit malfunction

Defective PCB Power Supply Rails & DC Bus Filter Capacitors, open/short circuit in the wiring harness, or faulty connector on the electronic control board (pcb) & bus communications.

Check current detection circuitry on PCB.

U2

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

Compressor protection against loss of phase

Component fatigue, sensor feedback out of tolerance, wiring harness connector discontinuity, or electronic control board glitch.

Check phase connections to the compressor.

U3

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

PN voltage drop protection

Component fatigue, sensor feedback out of tolerance, wiring harness connector discontinuity, or electronic control board glitch.

Check power supply for severe voltage drops.

U4

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

Compressor reverse protection

Component fatigue, sensor feedback out of tolerance, wiring harness connector discontinuity, or electronic control board glitch.

Check for correct phase sequence and wiring to the compressor.

U5

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

AC current detect circuit malfunction

Defective PCB Power Supply Rails & DC Bus Filter Capacitors, open/short circuit in the wiring harness, or faulty connector on the electronic control board (pcb) & bus communications.

Inspect current detection circuit on the main board.

U7

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

4-way valve reversal abnormal

Component fatigue, sensor feedback out of tolerance, wiring harness connector discontinuity, or electronic control board glitch.

Check reversing valve and coil for proper operation in heat cycle.

U8

Air Conditioner / Heat Pump

NTC Temperature Sensor & Thermistor

Disconnection of the exhaust temperature sensor

Defective NTC Temperature Sensor Probe (Thermistor), open/short circuit in the wiring harness, or faulty connector on the ntc temperature sensor & thermistor.

Reconnect or replace exhaust temperature sensor.

U9

Air Conditioner / Heat Pump

Electronic Control Board (PCB) & Bus Communications

AC power zero voltage detect error

Defective PCB Power Supply Rails & DC Bus Filter Capacitors, open/short circuit in the wiring harness, or faulty connector on the electronic control board (pcb) & bus communications.

Check power supply voltage quality and main PCB zero-cross detection circuit.

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Airlux — Complete Error Code Catalog

75 Verified Error Codes

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

Dishwasher5

AL01 E7 i10 i20 i30

Washing Machine8

E01 E02 E03 E04 E05 E08 E16 E18

Oven / Microwave3

Hob / Cooktop5

Refrigerator / Freezer1

Air Conditioner / Heat Pump53

b5 b7 C5 E1 E2 E4 E5 E6 E8 EE EU F1 F2 F3 F4 F5 F6 F8 F9 FA FC FE FH H0 H1 H2 H3 H4 H5 H6 H7 HC HE L3 Lc Ld LE P5 P6 P7 P8 Pc PH PL PU U1 U2 U3 U4 U5 U7 U8 U9

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