What does HE1 mean?
Water heater circuit has an error (models with internal heater).
Common causes
- Failed water heater
- Thermistor issue
- Control board relay stuck
- Wiring damage
Diagnostic & testing steps
- 1. Test heater resistance: 20-30 ohms
- 2. Check thermistor: ~40K ohms at 77F
- 3. Test control board heater relay
- 4. Inspect wiring for damage
OEM parts & part numbers
Water Heater Element, Thermistor
Part numbers: DC47-00006M, DC32-00007A
Safety warning
⚠️ Disconnect power before testing
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