E23
Kenmore
Compressor Overload / Overheat Protection Trip
Kenmore hybrid water heater shows E23 and may run loudly or not heat efficiently
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Restricted airflow across evaporator, dirty air filter, low refrigerant charge, failing compressor, high ambient temperature
How to Fix / Troubleshooting
Safety: Turn OFF power. Refrigerant system service must be performed by an EPA-certified technician.
- Clean air filter: Remove and clean or replace the air filter at the top intake per the user manual.
- Inspect evaporator coil: With the top cover removed, gently clean dust from the evaporator fins using a soft brush and vacuum. Do not bend fins.
- Check clearance: Ensure there is adequate clearance around the heater (typically at least 6–12 inches on all sides and above) for proper airflow.
- Ambient conditions: Verify the unit is installed in a space within the recommended temperature range. Extremely hot or cold rooms can cause compressor overload.
- Professional service: If E23 persists, a technician should check refrigerant pressures, compressor current draw, and replace the compressor or related components if necessary.
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Repair Difficulty
Professional Required
5/5
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