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Error code reference

Electrolux Oven Error Code ASCH

Component compartment temperature warning (NCC)

Electrolux codesElectrolux oven codes

Component compartment temperature warning (NCC) - activates at 65°C due to dirty air intake filter or too high room temperature.

First step from the service manual

Check room temperature; clean the air intake filter; check inner lack of cavity insulation/heat transmissions from cavity to electronic compartment.

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

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What ASCH means on a Electrolux oven

The ASCH error code on an Electrolux oven indicates a component compartment temperature warning originating from the NCC (Non-Cooking Compartment), which houses the electronic control board and associated circuitry. This warning activates when the temperature inside the electronic compartment reaches or exceeds 65°C. The NCC is a thermally sensitive zone designed to stay significantly cooler than the cooking cavity, and when heat migrates into this area, the control system triggers the ASCH code as a protective measure to prevent damage to the electronics.

The most frequent cause of this condition is a blocked or dirty air intake filter. The air intake filter allows ambient air to circulate through the electronic compartment, dissipating heat generated by the control board and preventing heat migration from the cooking cavity. When this filter becomes clogged with grease, dust, or debris, airflow is restricted and the compartment temperature rises. Elevated ambient room temperature can compound the problem by reducing the cooling efficiency of whatever airflow does reach the compartment.

A secondary cause involves inadequate or compromised insulation between the cooking cavity and the electronic compartment. If the cavity insulation has degraded, shifted, or was never properly seated during installation, radiant and conductive heat from the oven cavity transfers more readily into the NCC. Technicians should inspect the insulation layers and any heat shields separating the two zones for damage, gaps, or improper fit, as these conditions will cause recurring ASCH faults even after filter cleaning.

Source: manufacturer service documentation.

Common causes of ASCH

  1. 01

    Clogged or dirty air intake filter

    Wiring / connection

    Grease, dust, and debris accumulate on the air intake filter over time, restricting airflow into the electronic compartment. This is the most common cause and is identified by visually inspecting the filter, which is typically located at the base or rear of the appliance.

  2. 02

    Excessive ambient room temperature

    Wiring / connection

    If the kitchen or installation environment exceeds normal temperature limits, the cooling airflow entering the electronic compartment may not be sufficient to keep the NCC below 65°C. Check the room temperature and ensure adequate ventilation around the appliance.

  3. 03

    Degraded or improperly seated cavity insulation

    Part replacement

    Insulation between the cooking cavity and the electronic compartment can shift, compress, or deteriorate over time, allowing heat to transmit directly into the NCC. Inspect the insulation layers and heat shields for gaps, damage, or displacement.

  4. 04

    Heat transmission path from cavity to electronic compartment

    Part replacement

    Structural gaps or missing components along the boundary between the cooking cavity and the electronic compartment can create unintended thermal pathways. This requires a physical inspection of the inner cabinet assembly to identify any openings or missing seals.

See the test procedure for each cause

Frequently asked questions about ASCH

What does ASCH mean on a Electrolux oven?
ASCH is a component compartment temperature warning indicating that the electronic control compartment, referred to as the NCC, has reached or exceeded 65°C. The oven triggers this code to protect the control board and related electronics from heat damage. It is most commonly caused by a blocked air intake filter or high ambient room temperature. Addressing airflow and insulation issues typically resolves the fault.
How do I fix the ASCH error on my Electrolux oven?
Start by locating and cleaning the air intake filter, which is often found at the base or rear of the unit. Next, check that the kitchen is adequately ventilated and that room temperatures are within a normal range. If the error persists after cleaning the filter and allowing the oven to cool, inspect the insulation between the cooking cavity and the electronic compartment for damage or displacement, as compromised insulation will require replacement.
Is it safe to use my Electrolux oven when the ASCH code is displayed?
Continuing to operate the oven while the ASCH code is active is not recommended. The warning indicates that the electronics are being exposed to temperatures that could cause control board damage or erratic behavior. Stop using the oven, allow it to cool fully, and address the underlying cause before resuming normal operation.
Will resetting the oven clear the ASCH error code?
Resetting the oven by cutting power at the breaker may temporarily clear the displayed code, but the error will return if the root cause is not corrected. The NCC temperature threshold of 65°C must no longer be exceeded for the fault to stay clear. A reset should only be attempted after the air intake filter has been cleaned, the unit has cooled down, and any insulation or ventilation issues have been resolved.
How much does it cost to repair an Electrolux oven showing the ASCH code?
If the fix is simply cleaning the air intake filter, there is no parts cost involved and only your time is required. If the cavity insulation has degraded and needs replacement, parts and labor costs can range from around $100 to $300 or more depending on the specific model and the extent of the damage. Control board replacement, if the electronics were damaged by prolonged overheating, can add significantly to the total repair cost.

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