Miele Carpet Cleaners Error Codes

F1

Carpet cleaner will not power on, display dead, no indicator lights

Main Power Supply / Control Board Fault

F10

Dirty water tank full error even when tank is empty or partially filled

Recovery Tank Full Sensor Fault

F11

Low solution level error even with full clean water tank

Clean Water Tank Presence / Level Detection Fault

F12

Brush height adjustment error, automatic height control not functioning

Brush Height Actuator / Sensor Fault

F13

Heater error (on heated-extraction models), water not heating or heater symbol flashing

Solution Heater / Temperature Control Fault

F14

Software / configuration error, unit may not start cycle and displays generic fault

Control Software / Configuration Fault

F15

Handle trigger error, spray function disabled and trigger symbol flashing

Trigger Switch / Input Fault

F16

Suction path blocked error, unit detects high motor load and stops

Airflow Restriction / Blockage Fault

F17

Excess foam detected, unit stops suction and may display foam symbol

Foam Sensor / Over-foaming Fault

F18

Mains frequency or voltage error, unit refuses to start

Power Supply / Line Monitoring Fault

F2

Carpet cleaner powers on but motor does not run, no suction or brush movement

Motor Drive Circuit Fault

F3

Pump does not run, no water sprayed onto carpet even with full tank

Solution Pump Circuit Fault

F4

Water level error, unit stops and may display tank or level symbol despite tank being filled

Water Level Sensor / Float Switch Fault

F5

Overheating error, unit shuts down during use and may display temperature or overheat warning

Thermal Protection / Overheat Fault

F6

Brush motor error, brushes do not rotate but suction and spray still work

Brush Drive Motor / Circuit Fault

F7

Communication error between handle controls and main unit, some functions unresponsive

Control Communication / Interface Fault

F8

Solution flow error, unit detects no flow through internal flow sensor despite pump running

Flow Sensor / Blocked Line Fault

F9

Leak detected internally, unit stops and may show leak or drip symbol

Internal Leak / Leak Sensor Activation

Symptom

Brushes do not rotate, but suction and spray are normal (no error code shown)

Mechanical Brush Drive Failure

Symptom

Burning smell during use, especially from motor area

Overheating / Electrical Insulation Breakdown

Symptom

Carpet cleaner has weak suction, poor pickup of water and debris from carpet

Reduced Airflow / Suction Loss

Symptom

Carpet cleaner leaves streaks or uneven cleaning lines on carpet

Uneven Brush Contact / Spray Distribution

Symptom

Control buttons unresponsive or intermittent, but power light is on

User Interface / Keypad Fault

Symptom

Detergent not mixing correctly, poor cleaning performance despite water flow

Detergent Dosing / Mixing Issue

Symptom

Handle or hose gets unusually hot during operation

Restricted Airflow / Overheating in Hose

Symptom

High-pitched whine or screech from motor area

Motor Bearing Wear

Symptom

Loud grinding or rattling noise from floorhead during operation

Brush Roll / Gearbox Noise

Symptom

No power at accessory socket or powered tool connection (if equipped)

Accessory Power Outlet Fault

Symptom

No water sprays from the nozzle, but pump can be heard running

Spray Nozzle / Line Blockage

Symptom

Solution drips from nozzle even when trigger is not pressed

Leaking Spray Valve

Symptom

Strong musty or foul odor from exhaust air during use

Microbial Growth / Contaminated Tanks and Filters

Symptom

Unit leaves carpets overly wet, poor water extraction after cleaning

Insufficient Extraction / Recovery

Symptom

Unit shuts off randomly during use without error code

Intermittent Power Loss / Thermal Trip

Symptom

Unit trips household circuit breaker or RCD when switched on

Electrical Short / Earth Leakage

Symptom

Unit vibrates excessively or is difficult to control on carpet

Mechanical Imbalance / Brush Vibration

Symptom

Water leaking from around dirty water tank area

Recovery Tank Seal Failure

Symptom

Water leaking from underside of machine during use

Solution Circuit Leak