Miele Washer Error Code F4152

Error code F4152 on a Miele washer indicates that switch 3S57 has been detected in an open-circuit condition. Switch 3S57 is a position or status switch associated with the water management system, and when it reads as open-circuited, the machine's control board cannot confirm proper operation of the connected valve or drain components. The control board monitors this switch continuously during operation, and an open circuit typically means either the switch itself has failed, the wiring harness has broken continuity, or the connector at plug N1L_ST24 on the ELP 235 interface has lost its connection.

The diagnostic focus for F4152 centers on three components: the ELP 235 plug at connection point N1L_ST24, the shutoff valve, and the drain valve. Soiling or debris buildup is a primary concern because contamination can prevent valve components from seating or moving correctly, which in turn prevents switch 3S57 from closing and completing its circuit. Lint, mineral scale, and detergent residue are the most common forms of soiling that interfere with valve operation in this system.

When diagnosing this fault, start at the electrical connection before assuming component failure. The N1L_ST24 plug should be inspected for corrosion, bent pins, or loose seating. If the connector is intact, the shutoff valve and drain valve should be cleaned and inspected for physical obstructions or debris that would hold them in a position that registers as an open circuit at the switch. Persistent open-circuit readings after cleaning and reseating connections point toward a failed switch 3S57 or a wiring fault in that circuit.