Maytag Refrigerator / Freezer AL04

Maytag error code AL04 indicates: Maytag PowerCold MFI French Door Refrigerator: Alarm code AL04 indicates prolonged AC mains power outage; internal cabinet temperature rose above safe food storage threshold..

The primary root cause for Maytag code AL04 is: On Maytag refrigerators (Maytag Commercial Technology (MCT) heavy-duty direct-drive chassis): Grid power blackout exceeding 3 hours or loose wall plug connection, accompanied by temperature rise above -9°C in freezer..

To resolve error code AL04: Inspect food items for thawing. Measure AC mains voltage at wall socket (230V AC ±10%). Press Alarm Reset or Temperature button for 3 seconds to clear alarm and restore normal display. Press and hold the Water Filter Reset pad for 3 seconds until chime confirms reset and indicator turns blue.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Maytag code AL04 persists, the physical component causing On Maytag refrigerators (Maytag Commercial Technology (MCT) heavy-duty direct-drive chassis): Grid power blackout exceeding 3 hours or loose wall plug connection, accompanied by temperature rise above -9°C in freezer. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test 3-Phase Motor Windings / Tacho Generator / Carbon Brushes across Across phase pins U-V, V-W, U-W on motor harness; across tacho pins. Expected nominal reading is 3Ω–6Ω (BLDC phase U-V-W) / 60Ω–180Ω (Tacho coil) / 1.5Ω–3.5Ω (Universal stator). Tolerance: BLDC phase winding values must be strictly balanced within ±0.3Ω. Hand rotation generates 1V–4V AC on tacho..

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.