Miele F173

Miele error code F173 indicates: The device stops its program and displays a technical error code, with no obvious symptoms..

The primary root cause for Miele code F173 is: This code indicates a failure of an internal diagnostic test. The electronics have detected an anomaly in receiving a minimum pulse from a sensor, such as a flow meter or tachometer..

To resolve error code F173: 1. Perform a reset by turning off the power to the device for 15 minutes. 2. Check that the water inlet pressure is sufficient and that the tap is fully open. 3. If the problem persists, this indicates a more complex fault in a sensor or electronic card which requires the intervention of a professional for a precise diagnosis.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F173 persists, the physical component causing This code indicates a failure of an internal diagnostic test. The electronics have detected an anomaly in receiving a minimum pulse from a sensor, such as a flow meter or tachometer. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Solenoid Valve Coil / Aquastop Pneumatic Valve across Across coil spade terminals (disconnect harness first). Expected nominal reading is 3.5kΩ–4.5kΩ (Standard 230V) / 2.0kΩ–4.2kΩ (Aquastop). Tolerance: ±10%. Open circuit (OL) indicates burned solenoid coil. Flowmeter turbine reed switch pulses on flow..

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.