F5Warning
Fisher & Paykel Dishwasher F5 Error Code
Temperature sensor (thermistor) circuit is open or shorted. Cycle may run but not heat correctly.
Common causes
- Defective thermistor sensor
- Loose or corroded wire harness to thermistor
- Moisture in connector
How to fix it
- Check thermistor resistance at room temp (should be 10-50k ohms) with multimeter
- Inspect connector for corrosion or loose pins
⚠ When to call a pro: If readings are out of range and connector is fine, replacement likely needed
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.