AC voltage error — unstable or insufficient power supply detected
The E27 error on the Bosch WAJ24060IN indicates ac voltage error — unstable or insufficient power supply detected. This typically occurs due to household voltage supply outside the 180–260v acceptable range. Most homeowners fix this in 10–20 min by following the steps below.
Safety Warning
This is a high-severity error. Unplug the appliance immediately and assess the situation before attempting any repair.
Common Causes of E27
- 1Household voltage supply outside the 180–260V acceptable range
- 2Fluctuating or unstable mains power in the area
- 3Damaged power cord or loose wall outlet connection
- 4Control board power supply circuit failure
How to Fix E27
- 1
Step 1
Power off the washer and pull the plug from the wall
- 2
Step 2
Check whether other appliances in the home are experiencing power fluctuations
- 3
Step 3
Inspect the power cord for visible damage, fraying, or burn marks
- 4
Step 4
Plug the washer into a different wall outlet on a different circuit to rule out a local wiring issue
- 5
Step 5
Unplug the washer for 5 minutes and plug it back in to reset the board
- 6
Step 6
If the error recurs, contact your utility provider about voltage stability or call a technician to test the control board input circuit
Tools Needed
When to Call a Technician
Household voltage is within range but E27 keeps appearing — the control board power supply circuit needs professional diagnosis
Frequently Asked Questions
Common questions about Bosch E27 error
E27 tells you the incoming voltage to your washer is outside the safe range of 180 to 260 volts. Common triggers include utility voltage sags, neighborhood brownouts, or a deteriorating household circuit. If other appliances in your home are also flickering or running strangely, the issue is likely your power supply rather than the washer itself.
Yes. In areas with frequent voltage fluctuations, a voltage stabilizer rated for at least 2000 watts can protect the washer and prevent E27 errors. However, if the E27 error appears in an area with stable power, the control board's internal power regulation circuit may have failed and needs professional inspection.
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