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Error code reference

Vision Washer Error Code Er:05

NTC interruption

Vision codesVision washer codes

NTC interruption – cable break or NTC damaged.

First step from the service manual

Rectify cable break, replace NTC.

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

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What Er:05 means on a Vision washer

Er:05 on a Vision washer indicates an NTC (Negative Temperature Coefficient) thermistor fault caused by either a break in the wiring circuit or a failed NTC sensor itself. The NTC thermistor is the component responsible for monitoring water temperature inside the wash tub. It works by changing its electrical resistance in response to temperature changes, and the control board reads those resistance values to regulate heating cycles. When the circuit is open, meaning no signal is reaching the board, the machine throws Er:05 and halts operation to prevent overheating or an incomplete wash cycle.

The two root causes identified for this code are a cable break in the wiring harness connecting the NTC to the control board, or physical damage to the NTC sensor itself. A cable break can result from chafing, pinching, or connector corrosion that interrupts continuity along the thermistor circuit. A damaged NTC may have failed internally, presenting as an open circuit even though the wiring appears intact. Either condition causes the same result: the control board receives no readable signal from the thermistor and triggers the fault.

Diagnosing Er:05 starts with a visual inspection of the wiring harness from the NTC sensor to the control board, looking for damaged insulation, disconnected connectors, or corroded terminals. If the wiring checks out, the NTC sensor itself should be tested with a multimeter for continuity and resistance. A functioning NTC will show measurable resistance that varies with temperature. An open reading confirms sensor failure and the need for replacement.

Source: manufacturer service documentation.

Common causes of Er:05

  1. 01

    Broken or damaged wiring harness

    Wiring / connection

    A break, pinch, or chafe in the wiring connecting the NTC thermistor to the control board interrupts the circuit entirely. Inspect the harness along its full length for visible damage, fraying, or loose connectors.

  2. 02

    Corroded or disconnected connector

    Wiring / connection

    Moisture inside the machine can corrode the connector pins at either end of the NTC circuit, causing an intermittent or permanent open circuit. Check both the sensor-side and board-side connectors for corrosion or looseness.

  3. 03

    Failed NTC thermistor sensor

    Part replacement

    The NTC sensor itself can fail internally, presenting as an open circuit even when wiring is intact. A multimeter test showing no continuity or no measurable resistance across the sensor terminals confirms the sensor must be replaced.

  4. 04

    Pinched harness from drum or cabinet movement

    Wiring / connection

    Vibration during spin cycles can cause the wiring harness to shift and become pinched between moving components and the cabinet frame, eventually breaking the wire internally without visible external damage.

See the test procedure for each cause

Frequently asked questions about Er:05

What does Er:05 mean on a Vision washer?
Er:05 indicates an NTC thermistor fault caused by either a break in the wiring circuit or a damaged temperature sensor. The NTC monitors water temperature and sends resistance-based signals to the control board. When the circuit is open and no signal is received, the washer stops and displays Er:05. The fault must be corrected by repairing the wiring or replacing the sensor before the machine will operate normally.
How do I fix Er:05 on a Vision washer?
Start by inspecting the wiring harness connected to the NTC thermistor for any visible breaks, damaged insulation, or loose connectors. If the wiring appears intact, use a multimeter to test the NTC sensor for continuity and resistance. A reading showing an open circuit means the sensor has failed and needs to be replaced. Repair any identified cable breaks or replace the NTC to resolve the fault.
Will resetting the washer clear the Er:05 error code?
Resetting the washer may temporarily clear the displayed code, but it will return as soon as the control board attempts to read the NTC sensor again and finds no signal. The underlying problem, either the broken wire or the failed sensor, must be physically repaired or replaced to permanently clear Er:05.
Is it safe to use my Vision washer when Er:05 is displayed?
You should not attempt to run the washer while Er:05 is active. Without a functioning temperature sensor, the control board cannot monitor water temperature, which means the heating system could operate outside safe parameters. The machine is designed to halt operation when this fault is detected, and bypassing it is not recommended.
How much does it cost to repair an Er:05 error on a Vision washer?
If only a wire needs to be repaired or a connector replaced, the cost is typically low, often in the range of a service call fee plus minimal parts. If the NTC thermistor sensor itself has failed and needs replacement, parts costs are generally modest, with total repair costs including labor typically ranging from $75 to $200 depending on your location and the technician's rates.

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