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Error code reference

Daewoo Washer Error Code H5

Water temperature error

Daewoo codesDaewoo washer codes

Water temperature error - the water temperature is over 45 degrees C in delicate and wool course, indicating thermistor wash is defective.

First step from the service manual

Change the thermistor wash.

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

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What H5 means on a Daewoo washer

The H5 error code on a Daewoo washer indicates a water temperature fault specific to the delicate and wool wash cycles. These cycles are designed to operate at low temperatures to protect sensitive fabrics, and the H5 code triggers when the water temperature detected by the wash thermistor exceeds 45 degrees Celsius during one of these cycles. The thermistor continuously monitors water temperature and sends resistance-based signals to the control board. When the board receives readings that correspond to temperatures above the 45 degree threshold in a delicate or wool program, it interprets this as an error and halts or flags the cycle.

The primary component involved is the wash thermistor, a temperature-sensing resistor whose resistance changes predictably with water temperature. A defective thermistor can fail in two key ways: it may develop an internal short or drift in calibration, causing it to send inaccurate high-temperature readings to the control board even when the actual water is cool. It can also become damaged from prolonged heat exposure, water ingress, or connector corrosion, all of which alter its resistance output and produce false error signals.

Because the H5 code points directly to a defective wash thermistor, the recommended first diagnostic step is thermistor replacement. Before replacing, technicians should inspect the thermistor wiring harness and connector for corrosion, damage, or loose pins, as connection issues can mimic a failed sensor. If the wiring checks out cleanly, replacing the wash thermistor is the correct course of action to resolve the H5 fault.

Source: manufacturer service documentation.

Common causes of H5

  1. 01

    Defective wash thermistor

    Part replacement

    The wash thermistor has failed internally and is sending incorrect high-temperature readings to the control board, even when water temperature is within a normal range. This is the most direct cause and is confirmed by replacing the thermistor and clearing the fault.

  2. 02

    Corroded or damaged thermistor connector

    Wiring / connection

    Corrosion or damage at the thermistor wiring connector can cause resistance changes that mimic an overtemperature reading. Inspect the connector pins for oxidation, moisture, or bent contacts before replacing the sensor itself.

  3. 03

    Thermistor wiring harness damage

    Wiring / connection

    A pinched, cut, or shorted wire in the harness between the thermistor and the control board can produce erroneous temperature signals. Visually trace the harness and check for any signs of wear or contact with hot surfaces.

  4. 04

    Actual overheating of wash water

    Wiring / connection

    In rare cases, a faulty heating element or water inlet issue may cause genuinely elevated water temperatures during the cycle. If the thermistor tests within specification, the heating circuit should be inspected for unintended activation.

  5. 05

    Control board fault

    Part replacement

    If the thermistor and its wiring both check out correctly, the control board may be misreading the thermistor signal due to a component failure on the board itself. This is the least common cause and should be diagnosed after ruling out all sensor-side issues.

See the test procedure for each cause

Frequently asked questions about H5

What does H5 mean on a Daewoo washer?
The H5 code on a Daewoo washer indicates a water temperature error specific to the delicate and wool wash cycles. It appears when the wash thermistor detects or reports a water temperature above 45 degrees Celsius during one of these low-temperature programs. The code points to a defective wash thermistor as the root cause. Replacing the thermistor is the recommended first step to resolve the fault.
Can I fix the H5 error myself on a Daewoo washer?
A knowledgeable DIYer can often resolve the H5 error by replacing the wash thermistor, which is the most common cause of this code. Before purchasing a replacement part, inspect the thermistor connector and wiring harness for corrosion or damage, as a simple connector cleaning may resolve the issue. If wiring is intact and the fault persists after thermistor replacement, a technician should inspect the control board.
Is it safe to use my Daewoo washer when the H5 code is displayed?
It is not recommended to continue running delicate or wool cycles while the H5 error is active, as the washer is detecting a temperature condition that could potentially damage sensitive fabrics. The machine may pause or abort the cycle automatically as a protective measure. Address the thermistor fault before resuming use of these wash programs.
Will resetting my Daewoo washer clear the H5 error code?
A power reset may temporarily clear the H5 code from the display, but the fault will return if the underlying thermistor problem has not been fixed. Because the code is triggered by an active sensor reading during a cycle, it will reappear as soon as a delicate or wool program detects the same temperature condition again. The thermistor or its wiring must be repaired or replaced to permanently resolve the error.
How much does it cost to repair a Daewoo washer H5 error?
Repair costs depend on the specific cause. If the problem is a faulty wash thermistor, parts typically range from around $10 to $40 depending on the model, making it one of the more affordable washer repairs. If professional labor is required, total costs including diagnostics and installation can range from $80 to $200 or more. Control board replacement, if needed, would push costs considerably higher.

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