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Error code reference

Daewoo Refrigerator Error Code CE

For the Front PCB, no data received from RX for 30 seconds (communication error).

Daewoo codesDaewoo refrigerator codes

For the Front PCB, no data received from RX for 30 seconds (communication error).

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What CE means on a Daewoo refrigerator

The CE error code on a Daewoo refrigerator indicates a communication failure between the front PCB (printed circuit board) and the main control board. Specifically, the front PCB has not received any data signal through its RX (receive) line for a continuous period of 30 seconds. This type of error is classified as a serial communication fault, meaning the two boards have lost their ability to exchange operational data, which is required for the refrigerator to regulate temperature, respond to user input, and coordinate functions across the appliance.

Communication between the front PCB and the main control board typically travels through a wiring harness using a serial data protocol. When the RX line goes silent for 30 seconds, the front PCB registers this as a complete loss of communication and triggers the CE code. The root cause can originate from either board, or from the wiring and connectors that link them. A failed main control board may stop transmitting data entirely, while a damaged wire or loose connector can interrupt the signal before it reaches the front PCB's receive input.

Diagnosing this error requires systematically inspecting the communication wiring harness for damage, corrosion, or disconnected terminals, then testing both the front PCB and main control board for faults. Power cycling the refrigerator may temporarily clear the code if the error was caused by a transient signal disruption, but a recurring CE code points to a hardware failure in one of the boards or the interconnecting wiring.

Source: manufacturer service documentation.

Common causes of CE

  1. 01

    Loose or disconnected wiring harness connector

    Wiring / connection

    The connector linking the front PCB to the main control board may have worked loose over time due to vibration or handling. Inspect all connectors in the communication harness for proper seating and secure contact.

  2. 02

    Damaged communication wiring

    Part replacement

    The wiring harness carrying the RX signal between boards can suffer from chafing, pinching, or breaks, particularly near door hinges or routing points. Visually trace the harness and check for visible damage or broken conductors.

  3. 03

    Failed main control board

    Part replacement

    If the main control board stops transmitting data on the TX line, the front PCB will receive nothing on its RX input and trigger the CE code. A faulty main board is a common culprit when wiring checks out clean.

  4. 04

    Failed front PCB

    Part replacement

    The front PCB itself may have a defective RX input circuit, causing it to report a communication error even when signals are being transmitted correctly. This is typically diagnosed by eliminating other causes first.

  5. 05

    Transient power disruption

    Wiring / connection

    A brief voltage irregularity or power interruption can cause the communication link between boards to drop temporarily, triggering the CE code without any permanent hardware failure. A power cycle may resolve it if the error does not return.

See the test procedure for each cause

Frequently asked questions about CE

What does CE mean on a Daewoo refrigerator?
CE stands for communication error. It means the front PCB on your Daewoo refrigerator has not received any data from the main control board through its RX (receive) line for 30 seconds or more. This points to a breakdown in the internal serial communication between the two control boards. The cause can be a wiring fault, a loose connector, or a failed board on either end of the communication link.
Can I fix the CE error on my Daewoo refrigerator myself?
Some cases of the CE error can be addressed without professional help, particularly if the cause is a loose wiring connector. Unplugging the refrigerator, locating the harness between the front PCB and the main control board, and reseating all connectors is a reasonable first step. However, if the error returns after reconnecting and power cycling, a board replacement is likely needed and may require a technician.
Will resetting my Daewoo refrigerator clear the CE error?
A power reset, which involves unplugging the refrigerator for several minutes and then plugging it back in, may clear the CE code if it was triggered by a temporary signal dropout. If the underlying cause is a damaged wire, corroded connector, or failed control board, the code will return after the reset. A reset is a useful first diagnostic step but not a permanent fix for hardware faults.
Is it safe to keep using my Daewoo refrigerator with a CE error?
A CE error means the front control panel and the main board are not communicating properly, which can affect the refrigerator's ability to maintain correct temperatures and respond to settings changes. Continued use with this error active is not recommended for food safety reasons. You should monitor temperatures closely and address the fault as soon as possible to avoid food spoilage.
How much does it cost to repair a CE error on a Daewoo refrigerator?
Repair costs depend on the root cause. If the fix is simply reseating a connector, there may be no parts cost, only a service call fee if a technician is involved, which typically ranges from $75 to $150. Replacing a wiring harness or front PCB can add $50 to $200 or more in parts, while a main control board replacement may range from $100 to $300 in parts depending on the model.

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