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error World Dryer
Error Code E4
Voltage to the dryer is lower than 15% below rating, indicating undervoltage.
? What Causes This
Power supply issue causing voltage too low.
✓ How to Fix It
Check power supply circuit for correct voltage and compliance with hand dryer ratings label. If no issues found, contact a service engineer.
Source: page 13 of the official manual
From the manual
This error code appears in:
World Dryer S Xxxas Xxxce Sanitize Dry Hand Dryer