Error code · Washer

ASKO W5 Washer Shows E40: Supply Voltage Warning

In the ASKO W5 series, the W5114RXLW among them, code E40 is a warning from the washer that the voltage coming from the wall is unstable, either too low or too high for the machine. It…

Medium · inspection needed

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Code: E40
Appliance: Washer
Brand: ASKO
Warranty: 30-day workmanship

What E40 means

In the ASKO W5 series, the W5114RXLW among them, code E40 is a warning from the washer that the voltage coming from the wall is unstable, either too low or too high for the machine. It is a warning from the system rather than a damaged part. The washer may slow down, pause, or stop the program until the supply settles.

Common causes of E40

Voltage swings on the home circuit
Loose plug, outlet or extension cord
Other heavy appliances sharing the same circuit
Washer's own voltage monitoring

✓ One safe check you can try

1. Check that the washer is plugged directly into a wall outlet and not an extension cord. 2. Avoid running other large appliances on the same circuit during a wash. 3. Restart the program. 4. If E40 keeps appearing, have the power supply to the washer checked, as the owner's manual advises.

! Why to stop there

The warning points to the power supply network, so we first confirm whether the voltage at the outlet is steady
If the outlet is fine, we test whether the washer reads the voltage wrongly
We tell you in writing what we find, and if the outlet needs an electrician, we say so plainly

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Washer codes

TEMPERATURE STOP FAULTASKO Washer Message "TEMPERATURE STOP FAULT": Temperature Control Problem THERMISTOR FAULTASKO Washer Message "THERMISTOR FAULT": Water Temperature Sensor Problem Warning - Drum cleaningASKO W5 Washer Message "Warning - Drum Cleaning": Cleaning Reminder WASH MOTOR FAULTASKO Washer Message "WASH MOTOR FAULT": Drum Motor Problem WATER INLET FAULTASKO Washer Message "WATER INLET FAULT": No Water Coming In WATER OUTLET FAULTASKO Washer Message "WATER OUTLET FAULT": Drain Problem E7.2ASKO W5 Washer Shows E7.2: Too Much Detergent E9 / E9.1ASKO W5 Washer Code E9 or E9.1: Water Leak Detected

E40E40 questions

Is E40 a warning about my home's power?

It is a warning that the supply voltage is fluctuating, too low or too high. The washer protects itself by pausing until the power steadies.

Is E40 a problem with the washer?

Often the washer is fine and the supply is the cause. The owner's manual tells you to check the power supply network the washer is connected to.

Should I use a surge strip or extension cord?

No. Plug the washer straight into a wall outlet. An extension cord or a shared strip can add a voltage drop and bring the warning back.

Book a visit

Still seeing E40?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 804-6320