Hoover AL01

Hoover error code AL01 indicates: Hoover H-FRIDGE 300 / 500 / 700 Total No-Frost Air Care Refrigerator: Critical freezer high temperature alarm AL01; freezer compartment temperature has risen above safe threshold of -9°C..

The primary root cause for Hoover code AL01 is: On Hoover refrigeration units featuring H-FRIDGE Air Care Total No-Frost multi-channel air tower, inverter compressor modulation, and electronic multi-zone sensing: 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 Alarm and Eco Mode buttons simultaneously for 7 seconds until confirmation tone indicates diagnostic buffer clear.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Hoover code AL01 persists, the physical component causing On Hoover refrigeration units featuring H-FRIDGE Air Care Total No-Frost multi-channel air tower, inverter compressor modulation, and electronic multi-zone sensing: 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.