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OEM VERIFIED BENCH
OFFICIAL FAULT CODEF98
Miele
Miele // OFFICIAL DIAGNOSTIC BENCH

Miele F98

Washing MachineWater Inlet Valve, Aquastop & Flowmeter
Luxury front-loading washing machine in brushed titanium with illuminated dark glass drum
Washing Machine
Select Appliance Type
0ms Instant Telemetry Switch

Symptom / Description

FAULT

The gas dryer attempts to start heating but stops after several unsuccessful attempts to ignite the flame.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

Lack of gas ignition due to a closed gas inlet valve, a faulty gas solenoid valve, an inoperable igniter (igniter) or a flame sensor that does not detect combustion.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED
1Check that the gas supply to the appliance is turned on. Observe the igniter when starting; it should become incandescent. If this is not the case, or if no flame appears, technical intervention is necessary to test the gas circuit components.
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 TechnicianWorldwide 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 & FlowmeterWashing Machine
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 F98

FAQ TREE
What does error code F98 mean on a Miele appliance?

Miele error code F98 indicates: The gas dryer attempts to start heating but stops after several unsuccessful attempts to ignite the flame..

What is the root cause of Miele error code F98?

The primary root cause for Miele code F98 is: Lack of gas ignition due to a closed gas inlet valve, a faulty gas solenoid valve, an inoperable igniter (igniter) or a flame sensor that does not detect combustion..

How do I fix or resolve Miele error code F98?

To resolve error code F98: Check that the gas supply to the appliance is turned on. Observe the igniter when starting; it should become incandescent. If this is not the case, or if no flame appears, technical intervention is necessary to test the gas circuit components.

Is it safe to clear Miele error code F98 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F98 persists, the physical component causing Lack of gas ignition due to a closed gas inlet valve, a faulty gas solenoid valve, an inoperable igniter (igniter) or a flame sensor that does not detect combustion. must be inspected or replaced.

How do I test electrical resistance for Miele code F98 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 F98?

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

Did this solution resolve the issue?

SEMANTIC KNOWLEDGE GRAPH // MIELE

Related Miele Washing Machine Error Codes

Diagnostic Link Mesh14 OEM Cross-References

Cross-referenced diagnostic codes for technicians inspecting similar component subsystems.

F980Electronic Control Board (PCB) & Bus Communications
The Miele mobile app cannot communicate with the device, displaying a network connection fai...
Inspect Protocol
F981General System & Mechanical Integration
The device is connected to the Wi-Fi network but does not have Internet access, the applicat...
Inspect Protocol
F982General System & Mechanical Integration
Although the device is connected to the local network, the Miele app features are not availa...
Inspect Protocol
F983General System & Mechanical Integration
Initial Wi-Fi connection setup fails, app cannot connect to device in Ad-hoc mode.
Inspect Protocol
F984General System & Mechanical Integration
During configuration, the application is successfully connected to the device in Ad-hoc mode...
Inspect Protocol
F985Electronic Control Board (PCB) & Bus Communications
An internal communication error related to the connectivity module is displayed, making inte...
Inspect Protocol
Waterproof SystemWater Level Pressure Switch & Air Dome
Miele WATERPROOF SYSTEM: Water inlet / filling timeout in Washing Machine; appliance fails t...
Inspect Protocol
Check DrainDrainage System & Drain Pump
Miele CHECK DRAIN: Water drainage failure detected in Washing Machine; drain pump cannot eva...
Inspect Protocol
Check InletWater Level Pressure Switch & Air Dome
Miele CHECK INLET: Water inlet / filling timeout in Washing Machine; appliance fails to fill...
Inspect Protocol
F0General System & Mechanical Integration
The device displays the code F0 more appears to be operating normally or has just completed ...
Inspect Protocol
F102Electronic Control Board (PCB) & Bus Communications
Communication error between modules
Inspect Protocol
F103General System & Mechanical Integration
Miele F103: Operational cycle fault detected during Washing Machine program execution.
Inspect Protocol
F105NTC Temperature Sensor & Thermistor
The steam function of the appliance is unusable and error code F105 is indicated.
Inspect Protocol
F106NTC Temperature Sensor & Thermistor
The device does not produce steam and displays the code F106 on the control screen.
Inspect Protocol
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