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Error code reference

Indesit Dryer Error Code F08

Lower element is energised when it should be off.

Indesit codesIndesit dryer codes

Lower element is energised when it should be off.

First step from the service manual

Check security of module connector J4.

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

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What F08 means on a Indesit dryer

The F08 error code on an Indesit dryer indicates that the lower heating element is being detected as energised at a time when the control module has not commanded it to activate. This is a feedback or circuit integrity fault, meaning the module is reading voltage or current through the lower element circuit when the element should be in an off state. The control board continuously monitors heating element status as part of its safety logic, and when the sensed state contradicts the commanded state, F08 is triggered to prevent uncontrolled or runaway heating.

The most common starting point for diagnosis is connector J4 on the control module. A loose, corroded, or partially seated connector at J4 can cause false voltage readings on the element feedback line, leading the board to believe the element is live when the command signal is off. This should always be the first physical check before condemning any other component.

Beyond the connector, the fault can stem from a relay on the control board that has welded contacts and is stuck in the closed position, continuing to pass current to the element regardless of the control signal. A failed triac on the board can behave similarly. Wiring harness damage causing a short to live on the lower element circuit is another possible cause. In rarer cases, the lower element itself may have an internal short that creates a parallel current path, though this typically also produces other symptoms such as nuisance tripping of thermal cutouts.

Source: manufacturer service documentation.

Common causes of F08

  1. 01

    Loose or faulty module connector J4

    Wiring / connection

    A poorly seated, corroded, or damaged connector at J4 on the control module can cause a false signal, making the board read the lower element as energised when it is not. Reseat the connector firmly and inspect the pins for corrosion or bent contacts.

  2. 02

    Welded relay contacts on the control board

    Part replacement

    The relay responsible for switching the lower heating element can develop welded contacts due to arcing, leaving the circuit permanently closed. If the relay contacts are fused together, the element will remain energised regardless of the board's command signal, and the control board will need replacement.

  3. 03

    Failed triac on the control board

    Part replacement

    A shorted triac on the control module can allow current to pass to the lower element even when no trigger signal is applied. This is a board-level fault and typically requires replacing the control module.

  4. 04

    Wiring harness short circuit

    Wiring / connection

    Chafed or damaged wiring in the lower element circuit can create an unintended connection to live voltage, causing the element to appear energised when it should be off. Inspect the full harness run from J4 to the lower element for signs of insulation damage or contact with metal edges.

  5. 05

    Internally shorted lower heating element

    Part replacement

    A fault within the lower element itself can create a leakage path that registers as the element being energised. Check the element for resistance values outside the expected range and inspect for visible burn damage.

See the test procedure for each cause

Frequently asked questions about F08

What does F08 mean on a Indesit dryer?
F08 means the dryer's control system has detected that the lower heating element is energised when it has been commanded to be off. This is a safety-related fault that causes the dryer to stop operating. It can be caused by a faulty connector, a stuck relay or triac on the control board, a wiring short, or a defective element. Diagnosis should begin with checking connector J4 on the control module.
Can I fix the F08 error on my Indesit dryer myself?
The first step, checking and reseating connector J4, is straightforward and can be done by a confident DIYer after unplugging the machine from the mains. However, if the fault lies with the control board relay, triac, or wiring harness, the repair becomes more involved and carries electrical safety risks. Board replacement and harness repairs are best handled by a qualified technician.
Is it safe to keep using my Indesit dryer with an F08 error?
No, you should not continue using the dryer while F08 is active. The error indicates the lower heating element may not be shutting off correctly, which creates a risk of overheating. Disconnect the dryer from the power supply until the fault has been diagnosed and repaired.
Will resetting the dryer clear the F08 error code?
A power reset may temporarily clear the displayed error, but it will not resolve the underlying fault. If the root cause, such as a welded relay, shorted triac, or wiring issue, is still present, the F08 code will return as soon as the dryer attempts to operate. The fault must be physically repaired before the error will clear permanently.
How much does it cost to repair an F08 error on an Indesit dryer?
Repair costs depend on the cause. If only the connector needs reseating, there may be no parts cost, just a service call fee typically in the range of $60 to $120. If the control board needs replacement, parts and labor combined can range from $150 to $300 or more depending on your region and the specific board required. A wiring harness repair falls somewhere in between.

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