Granitestone
Underheating / Weak Heating Performance
Air fryer underheats; takes very long to cook and never reaches set 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
Partially failed heating element, Incorrect temperature sensing due to loose NTC sensor, Low line voltage, Failing heater relay with intermittent contact
How to Fix / Troubleshooting
Safety first: Unplug and cool the unit before opening.
Steps to troubleshoot underheating:
- 1. Compare with external thermometer: Use an oven-safe thermometer in the basket to verify actual temperature versus set temperature.
- 2. Inspect heating element: Remove housing and visually inspect the heating element for dark spots, cracks, or sagging.
- 3. Check sensor mounting: Ensure the NTC temperature sensor is firmly attached and not loose, which can cause the control to think the unit is hotter than it is.
- 4. Test element resistance: Measure the element's resistance and compare to specifications (from service data or similar models). A significantly higher resistance can indicate a weak element; replace the heating element assembly if needed.
- 5. Inspect heater relay: Look for signs of overheating or pitting on the relay. Replace the main control PCB if the relay is unreliable.
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Repair Difficulty
Medium
3/5
Required Part
Heating Element Assembly
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