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Error code reference

Miele Dryer Error Code Rotary Iron LED steady

Fan NTC temperature sensor open circuit (T1576 only).

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Fan NTC temperature sensor open circuit (T1576 only).

First step from the service manual

Access Service Mode, turn selector to Woolens position, press Start to retrieve fault code.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Rotary Iron LED steady means on a Miele dryer

The Rotary Iron LED steady indicator on a Miele T1576 dryer signals an open circuit fault in the fan NTC (Negative Temperature Coefficient) temperature sensor. The fan NTC is a thermistor positioned to monitor the temperature of the airflow generated by the dryer's fan assembly. Under normal operation, the NTC sensor varies its resistance in a predictable, inverse relationship with temperature, allowing the control board to continuously track thermal conditions within the airflow path. An open circuit condition means the electrical signal path through the sensor has been completely interrupted, producing a resistance reading that exceeds the valid measurement range and causes the control board to flag a fault.

Open circuit faults in NTC sensors are most commonly caused by physical damage to the sensor itself, a broken or corroded wire in the sensor harness, or a failed connector between the sensor and the control board. Because this fault is specific to the T1576 model, the sensor and its wiring are particular to that platform's design. The control board cannot distinguish between an actual overtemperature condition and a broken sensor, so it halts normal operation to protect the dryer from potential thermal damage.

To confirm and retrieve the stored fault code, a technician must enter Service Mode by accessing the service program, rotating the program selector to the Woolens position, and pressing Start. This retrieval step is essential before beginning component-level diagnosis, as it confirms the fault is actively logged and rules out a transient signal dropout. From there, resistance testing of the fan NTC sensor and continuity checks of the associated wiring harness will isolate whether the sensor itself or the surrounding circuit is the root cause.

Source: manufacturer service documentation.

Common causes of Rotary Iron LED steady

  1. 01

    Failed fan NTC temperature sensor

    Part replacement

    The thermistor itself has internally failed and developed an open circuit, producing no usable resistance signal. This is the most common cause and is confirmed by measuring the sensor's resistance across its terminals, which will read as infinite or out of range.

  2. 02

    Broken or damaged sensor wiring harness

    Part replacement

    The wiring connecting the fan NTC to the control board may have cracked, broken, or been pinched during a previous repair or drum movement. A visual inspection and continuity test of the harness will reveal any open breaks.

  3. 03

    Corroded or loose sensor connector

    Wiring / connection

    The electrical connector at the sensor or control board end may have developed corrosion or worked loose over time, interrupting the circuit without any visible wire damage. Unplugging and reseating the connector and inspecting the terminals for oxidation is a quick first check.

  4. 04

    Control board fault

    Part replacement

    In less common cases, the input circuit on the control board that reads the fan NTC signal may have failed, causing the board to report an open circuit even when the sensor and wiring are intact. This is diagnosed after the sensor and harness have been confirmed to be good.

See the test procedure for each cause

Frequently asked questions about Rotary Iron LED steady

What does Rotary Iron LED steady mean on a Miele dryer?
On a Miele T1576 dryer, a steady Rotary Iron LED indicates that the fan NTC temperature sensor has an open circuit fault. The NTC sensor monitors airflow temperature from the fan, and an open circuit means the control board is receiving no valid signal from it. The dryer stops operation to prevent potential thermal damage. A technician retrieves the specific fault code through Service Mode to confirm the diagnosis.
Can I fix the Rotary Iron LED steady fault myself?
A knowledgeable DIYer can start by checking the sensor's wiring harness for visible damage and reseating the connectors, which requires no special tools. However, replacing the fan NTC sensor or diagnosing a control board fault involves disassembly and electrical testing with a multimeter, which is better suited to a technician familiar with the T1576 platform. Attempting repairs without proper diagnosis risks misidentifying the faulty component.
Will resetting the dryer clear the Rotary Iron LED steady error?
A simple power cycle or reset will not permanently clear this fault because the control board will re-detect the open circuit in the fan NTC sensor as soon as the dryer attempts to operate. The fault code will return immediately or on the next cycle. The underlying cause, whether a failed sensor, broken wire, or loose connector, must be repaired before the error will clear and stay clear.
Is it safe to keep using my Miele dryer with the Rotary Iron LED steady error?
It is not recommended to continue operating the dryer with this fault active. The fan NTC sensor provides the control board with critical temperature data for the airflow path, and without a valid reading the dryer cannot properly regulate heat. Continued use without this sensor functioning could allow thermal conditions to go unmonitored, increasing the risk of overheating or component damage.
How much does it cost to repair the Rotary Iron LED steady fault on a Miele dryer?
Repair costs vary depending on which component is faulty. Replacing a fan NTC sensor is typically a lower-cost repair, with parts and labor generally ranging from around $100 to $250. If the control board is the root cause, costs can range from $250 to $500 or more depending on parts availability and labor rates in your area. Getting a diagnostic visit from a Miele-experienced technician will give you a more accurate estimate before committing to a repair.

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