mypros+
Error code reference

Electrolux Oven Error Code Ertc

Failure on RTC

Electrolux codesElectrolux oven codes

Failure on RTC - issue with software or hardware (e.g., battery clock exhausted).

First step from the service manual

Check battery BT1 on user board (U.I).

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

MyPros+ Max

Get the full diagnostic procedure for Ertc.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What Ertc means on a Electrolux oven

The Ertc error code on an Electrolux oven indicates a failure in the Real-Time Clock (RTC) circuit. The RTC is a dedicated timekeeping component integrated into the user interface (UI) board, responsible for maintaining accurate time and scheduling functions such as delayed bake and timed cooking operations. When the control system detects that the RTC is not functioning correctly, either due to a hardware fault or a software corruption event, it triggers this error code to alert the technician.

The most common hardware-related cause of this error is a depleted or failed backup battery, designated as BT1 on the user interface board. This battery maintains the RTC memory and clock function when the oven is not connected to mains power. When BT1 loses sufficient charge or fails entirely, the RTC loses its reference and the control board registers a clock failure. Diagnosing this begins with a direct inspection and voltage check of battery BT1 on the UI board.

Beyond the battery, the fault can also stem from software corruption within the UI board's firmware, or a hardware failure of the RTC chip or associated circuitry on the board itself. If replacing BT1 does not resolve the error, the UI board likely requires replacement. Power fluctuations or surges can also corrupt RTC data or damage the clock circuit, making surge history relevant during diagnosis.

Source: manufacturer service documentation.

Common causes of Ertc

  1. 01

    Depleted RTC backup battery (BT1)

    Part replacement

    Battery BT1 on the user interface board powers the real-time clock when the oven is unplugged or loses power. When this battery is exhausted, the RTC loses its reference and triggers the Ertc fault. Check and replace BT1 as the first diagnostic step.

  2. 02

    UI board firmware or software corruption

    Wiring / connection

    A software fault or corrupted firmware on the user interface board can cause the RTC to report a failure even if the hardware is intact. This may follow a power surge or an interrupted firmware update.

  3. 03

    Failed RTC circuit on the UI board

    Part replacement

    If the RTC chip or its supporting circuitry on the user interface board has failed due to age or electrical damage, the error will persist even after replacing BT1. In this case, the entire UI board requires replacement.

  4. 04

    Power surge or voltage fluctuation

    Part replacement

    A sudden voltage spike can corrupt RTC data or physically damage clock-related components on the UI board. If the error appeared shortly after a storm or power event, surge damage to the board is a likely contributor.

  5. 05

    Loose or corroded battery connection

    Wiring / connection

    Even if BT1 still holds a charge, a corroded battery contact or loose holder on the UI board can interrupt power to the RTC. Inspect the battery holder for oxidation or poor contact before replacing the battery itself.

See the test procedure for each cause

Frequently asked questions about Ertc

What does Ertc mean on a Electrolux oven?
The Ertc code indicates a failure in the Real-Time Clock (RTC) circuit on the user interface board. This clock circuit is responsible for timekeeping and scheduled cooking functions. The fault can be caused by a dead backup battery (BT1), software corruption, or a hardware failure on the UI board. Checking battery BT1 is the recommended first diagnostic step.
Can I fix the Ertc error myself?
In many cases, yes. The most common fix is replacing battery BT1 on the user interface board, which is a relatively straightforward repair for someone comfortable working with electronics. If the battery replacement does not clear the error, the UI board itself may need to be replaced, which is a more involved repair. Always disconnect power to the oven before opening any panels or handling internal components.
Is it safe to use my Electrolux oven while the Ertc code is displayed?
The Ertc fault specifically affects the clock and scheduling functions of the oven, such as delayed bake and timed cooking modes. Basic manual baking functions may still operate, but timed or programmed cooking should not be relied upon while this fault is active. It is best to resolve the error before using any time-dependent cooking features.
Will resetting my Electrolux oven clear the Ertc error?
A power reset, such as unplugging the oven or turning off its circuit breaker for several minutes, may temporarily clear the error if it was caused by a software glitch. However, if the underlying cause is a depleted BT1 battery or a failed RTC circuit, the error will return after the reset. A reset alone is not a reliable fix for this code.
How much does it cost to repair an Electrolux oven showing the Ertc error?
If the repair only requires replacing the BT1 backup battery, the cost is typically low, often in the range of a few dollars to around $20 for the part. If the user interface board needs to be replaced, parts and labor can range from $150 to $400 or more depending on the specific model and service rates in your area. Getting a diagnostic visit from a technician can help determine which repair is necessary before committing to a cost.

Related Electrolux oven codes

All Electrolux oven codes
View all 186 Electrolux oven codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass