Beko dishwashers use letter-number codes and blinking light sequences depending on the model line. Beko's own support pages list drain, fill and heater faults.
| Code | Meaning | Severity | First action |
|---|---|---|---|
| H5 | Drain fault | Usually fixable at home | The dishwasher has not drained within the expected time. |
| H3 | Heater fault | Engineer needed | Water is not heating correctly. |
| H1 | Thermistor fault | Engineer needed | The temperature sensor is reading out of range. |
| E01 | Door lock fault | Usually fixable at home | The door is not locked, so the cycle will not start. |
| H2 | Heater relay fault | Engineer needed | The board cannot switch the heater on. |
Safety first
Unplug before any check. Never open panels beyond the filter flap. Anything involving internal wiring, the heater or gas must go to a professional — see each code page for its "call a professional when" line.