Haier AL01

Haier error code AL01 indicates: Haier Cube 90 / FD 70 / 3D & 4D Total No Frost Refrigerator: Critical freezer high temperature alarm AL01; freezer compartment temperature has risen above safe threshold of -9°C..

The primary root cause for Haier code AL01 is: On Haier refrigeration units featuring Fresher Shield Total No-Frost inverter cooling, multi-airflow tower, and ABT antibacterial preservation system: Prolonged domestic power outage, freezer door left open, heavy loading of unfrozen food, or refrigerant leak..

To resolve error code AL01: Mute acoustic alarm with Alarm Reset button. Activate Super Freeze mode for 12 hours. Verify compressor runs and evaporator chills down to -18°C. Reset: Press and hold Fridge Temp and Freezer Temp keys together for 6 seconds until long beep confirms electronic board reset.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Haier code AL01 persists, the physical component causing On Haier refrigeration units featuring Fresher Shield Total No-Frost inverter cooling, multi-airflow tower, and ABT antibacterial preservation system: Prolonged domestic power outage, freezer door left open, heavy loading of unfrozen food, or refrigerant leak. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Compressor Motor Windings (Run/Start) & Defrost Heater across Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).. Expected nominal reading is 15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.. Tolerance: ±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero..

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.