OEM VERIFIED BENCH

OFFICIAL FAULT CODEF155

Miele // OFFICIAL DIAGNOSTIC BENCH

Miele F155

DishwasherWater Inlet Valve, Aquastop & Flowmeter

Dishwasher

Symptom / Description

FAULT

The device goes into safety mode and refuses to start, signaling the presence of a flame even though the system is supposed to be stopped.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The control system detects a flame current (parasitic flame) when the gas solenoid valve should be closed. This can be caused by a leaking solenoid valve, humidity or a fault in the control module.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1Immediately turn off the main gas supply to the home and unplug the appliance electrically. 2. Do not attempt any repairs yourself due to the risk of gas leaks. 3. Be sure to contact a qualified gas technician to inspect the tightness of the solenoid valve, the condition of the ionization wiring and the control module.

AI diagnostic workshop engine analyzing appliance circuit schematics and error telemetry in real time

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Miele Parts Finder

Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLWater Inlet Valve, Aquastop & FlowmeterDishwasher

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

Precision digital multimeter probes measuring electrical resistance in Ohms on an appliance control board

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

3.5kΩ–4.5kΩ (Standard 230V) / 2.0kΩ–4.2kΩ (Aquastop)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:Solenoid Valve Coil / Aquastop Pneumatic Valve

Test Pins & Connections

PROBE (+)

PROBE (-)

Across coil spade terminals (disconnect harness first)

Tolerance & Diagnostic Criteria±10%. Open circuit (OL) indicates burned solenoid coil. Flowmeter turbine reed switch pulses on flow.

1. Pre-Intervention Electrical Safety Protocols

!Electrical Safety Protocol: Disconnect electrical power before touching solenoid valve coils or Aquastop connectors.
!Firmly shut off the domc water supply tap before unscrewing the inlet hose fitting.
!Check safety base drip tray for accumulated water triggering the anti-flood polystyrene float switch.

3. Preliminary Mechanical & Visual Checks

Remove and clean sediment and sand particles from the 3/4" inlet hose metal mesh filter.
Verify domestic dynamic water pressure is between 1.0 and 10.0 bar (0.1 to 1.0 MPa).
Inspect outer Aquastop hose jacket for expansion, pinch damage, or internal leak reservoir triggering.

Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Miele F155

FAQ TREE

What does error code F155 mean on a Miele appliance?

Miele error code F155 indicates: The device goes into safety mode and refuses to start, signaling the presence of a flame even though the system is supposed to be stopped..

What is the root cause of Miele error code F155?

The primary root cause for Miele code F155 is: The control system detects a flame current (parasitic flame) when the gas solenoid valve should be closed. This can be caused by a leaking solenoid valve, humidity or a fault in the control module..

How do I fix or resolve Miele error code F155?

To resolve error code F155: 1. Immediately turn off the main gas supply to the home and unplug the appliance electrically. 2. Do not attempt any repairs yourself due to the risk of gas leaks. 3. Be sure to contact a qualified gas technician to inspect the tightness of the solenoid valve, the condition of the ionization wiring and the control module.

Is it safe to clear Miele error code F155 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F155 persists, the physical component causing The control system detects a flame current (parasitic flame) when the gas solenoid valve should be closed. This can be caused by a leaking solenoid valve, humidity or a fault in the control module. must be inspected or replaced.

How do I test electrical resistance for Miele code F155 using a multimeter?

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..

What safety protocol must be followed before servicing Miele code F155?

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.

Community Verification

COMMUNITY

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OEM VERIFIED BENCH

OFFICIAL FAULT CODEF155

Miele // OFFICIAL DIAGNOSTIC BENCH

Miele F155

DishwasherWater Inlet Valve, Aquastop & Flowmeter

Dishwasher

Symptom / Description

FAULT

The device goes into safety mode and refuses to start, signaling the presence of a flame even though the system is supposed to be stopped.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The control system detects a flame current (parasitic flame) when the gas solenoid valve should be closed. This can be caused by a leaking solenoid valve, humidity or a fault in the control module.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Miele Parts Finder

Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLWater Inlet Valve, Aquastop & FlowmeterDishwasher

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

3.5kΩ–4.5kΩ (Standard 230V) / 2.0kΩ–4.2kΩ (Aquastop)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:Solenoid Valve Coil / Aquastop Pneumatic Valve

Test Pins & Connections

PROBE (+)

PROBE (-)

Across coil spade terminals (disconnect harness first)

Tolerance & Diagnostic Criteria±10%. Open circuit (OL) indicates burned solenoid coil. Flowmeter turbine reed switch pulses on flow.

1. Pre-Intervention Electrical Safety Protocols

!Electrical Safety Protocol: Disconnect electrical power before touching solenoid valve coils or Aquastop connectors.
!Firmly shut off the domc water supply tap before unscrewing the inlet hose fitting.
!Check safety base drip tray for accumulated water triggering the anti-flood polystyrene float switch.

3. Preliminary Mechanical & Visual Checks

Remove and clean sediment and sand particles from the 3/4" inlet hose metal mesh filter.
Verify domestic dynamic water pressure is between 1.0 and 10.0 bar (0.1 to 1.0 MPa).
Inspect outer Aquastop hose jacket for expansion, pinch damage, or internal leak reservoir triggering.

Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Miele F155

FAQ TREE

What does error code F155 mean on a Miele appliance?

Miele error code F155 indicates: The device goes into safety mode and refuses to start, signaling the presence of a flame even though the system is supposed to be stopped..

What is the root cause of Miele error code F155?

How do I fix or resolve Miele error code F155?

Is it safe to clear Miele error code F155 by resetting power?

How do I test electrical resistance for Miele code F155 using a multimeter?

What safety protocol must be followed before servicing Miele code F155?

Community Verification

COMMUNITY

Did this solution resolve the issue?

Miele F155

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Miele F155

Community Verification

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Miele F155

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Miele F155

Community Verification

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