Hitachi NP-TZ300 Dishwasher Error Codes
NP-TZ300 Dishwasher Error Code Reference
Section titled “NP-TZ300 Dishwasher Error Code Reference”The Hitachi NP-TZ300 (14-Place Setting Built-In Dishwasher with Zone Wash and Auto-Open Drying) uses the following diagnostic error codes:
| Error Code | Fault Description |
|---|---|
| E1 | Water supply fault — machine failed to fill to required level within time |
| E2 | Drain fault — machine unable to drain water within the expected time |
| E3 | Heating fault — wash water failed to reach target temperature |
| E4 | Door open fault — door sensor or latch detected open during cycle |
| E5 | Wash pump fault — circulation pump motor abnormality during wash phase |
| E6 | Water level sensor fault — pressure switch or turbine flow sensor abnormal |
| E7 | Turbidity or optical sensor fault — soil level sensor reading abnormal |
Select a code above for detailed causes, step-by-step repair instructions, and FAQs.