!
error Hoover
Error Code E4
Water leak — detected by water-leak detection sensor under spray arm nozzle and wash basket. May occur when the machine cannot be drained.
? What Causes This
Drain blockage or clogged filters, causing siphon failure or drainage issues.
✓ How to Fix It
Check and clear the drain hose, unclog siphon or rinse filter; if issue persists contact service.
Source: page 14 of the official manual
From the manual