What tE / HE / LE / nE (722-prefix) Means
Four faults on the 722-prefix Kenmore dishwasher platform: tE for a failed thermistor on the heater, HE where water is not heating at all, LE for a circulation pump motor that has locked up, and nE for a diverter motor fault.
Common Causes of tE / HE / LE / nE (722-prefix)
- Debris jamming the circulation pump impeller
- A failed heater or its thermistor
- A diverter motor or position switch no longer responding
🔧 One Safe Check You Can Try
For LE, the published first check is for an obstruction stopping the pump impeller turning, so look for glass fragments or a fruit stone in the sump filter area before anything else.
⚠ Why You Shouldn't Go Further Than That
- Cut power at the breaker and shut off the water before the sump or base panel is opened.
- Broken glass in a dishwasher sump cuts easily and is removed with pliers and gloves rather than fingers.
- A pump fitted without finding what jammed it locks up again on the next cycle.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.