Over-voltage. The AC supply is above the permitted range (over about 280 V on 220 V machines).
Shown on JUKI machines including 210E, 910N, AMS-210E, AMS-210EN, AMS-221EN, AMS-224EN, AMS-251, AP874, AP876, APW-895N, APW-896N, DDL-8700B and others.
What to check
- Measure the mains supply; fit a stabiliser if it swings.
- If the supply is normal, the detector circuit on the SDC board is at fault.
Switch the machine off before touching any connector. If the code comes back after these checks, the fault is usually in the control boxes, PCBs and sensors.
Request a repair for this error or WhatsApp the code and your model to +91-9643480908 (Monday to Saturday, 10:00 AM to 8:00 PM (closed Sunday)).
Source
Summarised by Shankar Sewing from the LK-1900A engineer manual (page 110); SC 910N instruction manual (page 105); DDL-8700B instruction manual (page 50); DDL-9000CF instruction manual (page 73); DDL-9000CS instruction manual (page 57). The manual has the complete procedure and connector numbers for your exact model.
Other JUKI error codes
E007 Motor overload · E011 External media not inserted · E012 Read error on external media · E013 Write error on external media · E015 Sewing area exceeded · E016 External media full · E019 File size over · E032 File not compatible · E302 Machine head tilt detected · E303 Main shaft Z-phase sensor error · E703 Panel connected to the wrong machine · E704 System version mismatch · all JUKI codes
Frequently asked questions
What does JUKI error E811 mean?
Over-voltage. The AC supply is above the permitted range (over about 280 V on 220 V machines).
How do I fix JUKI error E811?
Measure the mains supply; fit a stabiliser if it swings. If the supply is normal, the detector circuit on the SDC board is at fault. If the code stays, the fault is usually in the control boxes, PCBs and sensors.
Which JUKI machines show E811?
In the manuals we have read, E811 appears on 210E, 910N, AMS-210E, AMS-210EN, AMS-221EN, AMS-224EN, AMS-251, AP874, AP876, APW-895N and other models.