F17
Whirlpool
Compressor Overload / High Discharge Protection
F17 error code, hybrid water heater indicates compressor overload or high discharge temperature
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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
Dirty evaporator coil, blocked airflow, low refrigerant, failing compressor, high ambient temperature, faulty discharge sensor
How to Fix / Troubleshooting
Safety first: Turn OFF power at the breaker.
Airflow and coil checks:
- Clean the air filter and evaporator coil thoroughly.
- Ensure adequate clearance around the unit and that it is not installed in a confined, overheated space.
Operational checks (technician level):
- Verify evaporator and discharge sensor readings against spec.
- Check compressor amp draw and compare to nameplate values.
- Inspect for signs of refrigerant issues (frost, oil stains).
Corrective actions:
- Correct airflow issues first; many F17 events are due to overheating from poor ventilation.
- Replace faulty sensors if readings are inaccurate.
- Compressor or refrigerant issues require an EPA-certified technician; in many cases, compressor failure means replacing the heat pump module or entire heater.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor / Heat Pump Assembly
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