Maytag AF

Maytag error code AF indicates: Maytag Maxima MEDB Steam & Extra Power Tumble Dryer: Air flow restriction warning code AF; control detects high differential temperature between heater and exhaust duct..

The primary root cause for Maytag code AF is: On Maytag dryers (Maytag Commercial Technology heavy-duty direct drive chassis and industrial-grade relays): Lint screen completely blanketed with lint, bent metal exhaust ducting, or bird nest/debris blocking exterior wall termination hood..

To resolve error code AF: Clean lint screen before every cycle. Wash screen with warm water and soap to remove wax. Inspect outside vent hood flapper while dryer is running to confirm exhaust air velocity. Rotate cycle dial 1 full turn counter-clockwise, then 3 clicks right, 1 click left, 1 click right. All status LEDs illuminate; press Start to begin diagnostics.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Maytag code AF persists, the physical component causing On Maytag dryers (Maytag Commercial Technology heavy-duty direct drive chassis and industrial-grade relays): Lint screen completely blanketed with lint, bent metal exhaust ducting, or bird nest/debris blocking exterior wall termination hood. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Drain Pump Motor Stator Coils across Across pump motor spade terminals (L-N unclipped). Expected nominal reading is 160Ω–220Ω (Sync 230V) / 20Ω–45Ω (3-Phase BLDC). Tolerance: ±10% balance. Insulation resistance between coil and motor chassis must exceed 20MΩ..

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.