Maytag F3 E2

Maytag error code F3 E2 indicates: Maytag MDB Series Dual Power Filtration Dishwasher: Optical Water Indicator (OWI) turbidity sensor calibration fault F3 E2; dishwasher cannot calculate soil level or optimize water usage..

The primary root cause for Maytag code F3 E2 is: On Maytag dishwashers (Maytag Commercial Technology heavy-duty direct drive chassis and industrial-grade relays): Hard water film coating the optical lens inside sump, calcium deposit blocking infrared phototransistor, or defective transmitter LED..

To resolve error code F3 E2: Clean optical lens face in sump with vinegar and soft cloth. Calibrate OWI in service diagnostic test cycle. Replace OWI sensor assembly if calibration fails. With door unlatched, press key sequence 1-2-3, 1-2-3, 1-2-3 within 5 seconds, close door firmly to run diagnostic service wash cycle.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Maytag code F3 E2 persists, the physical component causing On Maytag dishwashers (Maytag Commercial Technology heavy-duty direct drive chassis and industrial-grade relays): Hard water film coating the optical lens inside sump, calcium deposit blocking infrared phototransistor, or defective transmitter LED. 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.