OEM VERIFIED BENCH

OFFICIAL FAULT CODEF157

Miele // OFFICIAL DIAGNOSTIC BENCH

Miele Dishwasher F157

DishwasherNTC Temperature Sensor & Thermistor

Dishwasher

Symptom / Description

FAULT

The drying program does not heat or terminates prematurely with an error code.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The temperature sensor (NTC) circuit at the process air inlet is cut. The electronic card no longer receives temperature information and faults.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1Unplug the dryer electrically. 2. Access the NTC probe at the heating duct inlet. 3. Make sure its connectors are firmly plugged in and that the wiring is not cut or damaged. 4. Measuring the resistance of the probe with a multimeter will indicate an open circuit (infinite value). 5. Replace the temperature sensor to correct the fault.

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.

SWISS ATELIER TECHNICAL BLUEPRINT // 2026 SCHEMATIC STANDARD

Thermal & Heating Loop

Calrod Heating Element R1, Safety Klixon & NTC Thermistor Probe

CALIBRATED TEST POINTS (TP1 / TP2)

ACTIVE MULTIMETER BENCH

Target Component

NTC Temperature Sensor Probe (Thermistor)

Nominal Resistance / Test Range

4.8kΩ–12kΩ (at 20°C–25°C)

Test Harness Pins

Across sensor pins 1-2 (unplugged harness)

Diagnostic Verification Rule

Zero or OL indicates open heating element or tripped safety thermostat. Check insulation to earth.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLNTC Temperature Sensor & ThermistorDishwasher

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)

4.8kΩ–12kΩ (at 20°C–25°C)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:NTC Temperature Sensor Probe (Thermistor)

Test Pins & Connections

PROBE (+)

PROBE (-)

Across sensor pins 1-2 (unplugged harness)

Tolerance & Diagnostic CriteriaNegative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit.

1. Pre-Intervention Electrical Safety Protocols

!Electrical Safety Protocol: Disconnect 230V electrical mains power before removing appliance side or rear panels.
!Ensure tub water or heating chamber has cooled below 30°C before unclipping thermistor probe.
!Use CAT III 600V/1000V insulated test probes when tng at PCB edge connectors.

3. Preliminary Mechanical & Visual Checks

Inspect sensor immersion sleeve for calcification, limescale scale, or thermal paste degradation.
Check wiring harness for pinch points, chafing against chassis metal, and terminal pin oxidation.
Verify probe is firmly seated in its rubber grommet or bracket inside the water/air circuit.

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

Frequently Asked Questions: Miele F157

FAQ TREE

What does error code F157 mean on a Miele appliance?

Miele error code F157 indicates: The drying program does not heat or terminates prematurely with an error code..

What is the root cause of Miele error code F157?

The primary root cause for Miele code F157 is: The temperature sensor (NTC) circuit at the process air inlet is cut. The electronic card no longer receives temperature information and faults..

How do I fix or resolve Miele error code F157?

To resolve error code F157: 1. Unplug the dryer electrically. 2. Access the NTC probe at the heating duct inlet. 3. Make sure its connectors are firmly plugged in and that the wiring is not cut or damaged. 4. Measuring the resistance of the probe with a multimeter will indicate an open circuit (infinite value). 5. Replace the temperature sensor to correct the fault.

Is it safe to clear Miele error code F157 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F157 persists, the physical component causing The temperature sensor (NTC) circuit at the process air inlet is cut. The electronic card no longer receives temperature information and faults. must be inspected or replaced.

How do I test electrical resistance for Miele code F157 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

What safety protocol must be followed before servicing Miele code F157?

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.

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OEM VERIFIED BENCH

OFFICIAL FAULT CODEF157

Miele // OFFICIAL DIAGNOSTIC BENCH

Miele Dishwasher F157

DishwasherNTC Temperature Sensor & Thermistor

Dishwasher

Symptom / Description

FAULT

The drying program does not heat or terminates prematurely with an error code.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The temperature sensor (NTC) circuit at the process air inlet is cut. The electronic card no longer receives temperature information and faults.

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.

SWISS ATELIER TECHNICAL BLUEPRINT // 2026 SCHEMATIC STANDARD

Thermal & Heating Loop

Calrod Heating Element R1, Safety Klixon & NTC Thermistor Probe

CALIBRATED TEST POINTS (TP1 / TP2)

ACTIVE MULTIMETER BENCH

Target Component

NTC Temperature Sensor Probe (Thermistor)

Nominal Resistance / Test Range

4.8kΩ–12kΩ (at 20°C–25°C)

Test Harness Pins

Across sensor pins 1-2 (unplugged harness)

Diagnostic Verification Rule

Zero or OL indicates open heating element or tripped safety thermostat. Check insulation to earth.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLNTC Temperature Sensor & ThermistorDishwasher

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

4.8kΩ–12kΩ (at 20°C–25°C)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:NTC Temperature Sensor Probe (Thermistor)

Test Pins & Connections

PROBE (+)

PROBE (-)

Across sensor pins 1-2 (unplugged harness)

Tolerance & Diagnostic CriteriaNegative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit.

1. Pre-Intervention Electrical Safety Protocols

!Electrical Safety Protocol: Disconnect 230V electrical mains power before removing appliance side or rear panels.
!Ensure tub water or heating chamber has cooled below 30°C before unclipping thermistor probe.
!Use CAT III 600V/1000V insulated test probes when tng at PCB edge connectors.

3. Preliminary Mechanical & Visual Checks

Inspect sensor immersion sleeve for calcification, limescale scale, or thermal paste degradation.
Check wiring harness for pinch points, chafing against chassis metal, and terminal pin oxidation.
Verify probe is firmly seated in its rubber grommet or bracket inside the water/air circuit.

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

Frequently Asked Questions: Miele F157

FAQ TREE

What does error code F157 mean on a Miele appliance?

Miele error code F157 indicates: The drying program does not heat or terminates prematurely with an error code..

What is the root cause of Miele error code F157?

The primary root cause for Miele code F157 is: The temperature sensor (NTC) circuit at the process air inlet is cut. The electronic card no longer receives temperature information and faults..

How do I fix or resolve Miele error code F157?

Is it safe to clear Miele error code F157 by resetting power?

How do I test electrical resistance for Miele code F157 using a multimeter?

What safety protocol must be followed before servicing Miele code F157?

Community Verification

COMMUNITY

Did this solution resolve the issue?

Miele Dishwasher F157

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Thermal & Heating Loop

Workshop Verification & Safety Checklist

Frequently Asked Questions: Miele F157

Community Verification

Related Miele Dishwasher Error Codes

Miele Dishwasher F157

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Thermal & Heating Loop

Workshop Verification & Safety Checklist

Frequently Asked Questions: Miele F157

Community Verification

Related Miele Dishwasher Error Codes