Dryer shows F14 and does not heat properly, especially on heat pump models.

Safety first: Disconnect mains power before opening panels.

• Access heat pump area:
  • Remove side or rear panels as per service instructions.
  • Locate NTC sensors attached to the heat pump circuit or heat exchanger.
• Check connections: Ensure all sensor plugs are firmly seated and wires are intact.
• Clean surroundings: Remove lint and dust from around sensors and the heat exchanger to ensure accurate temperature readings.
• Test sensors (if possible): Measure resistance and compare with service data; replace any sensor that is open, shorted, or out of range.
• If sensors test OK: The control board may misread sensor data and require replacement by a technician.

Note: Access to heat pump components can be complex; if unsure, seek professional service.