Safety first: Unplug the Klarstein air fryer before inspection.

Steps:

1. Power reset: Leave the unit unplugged for at least 10 minutes to allow capacitors to discharge. Plug back in and check if E14 clears.
2. Check internal connectors: Open the housing and inspect all connectors between the display, touch panel, and main logic board. Reseat each connector firmly.
3. Inspect for surge damage: Look for burn marks or cracked ICs on the control PCB. If present, the board has likely been damaged by a surge and must be replaced.
4. Replace control board: Klarstein air fryers do not typically support field firmware reprogramming. If E14 persists after reseating connectors and power reset, replace the main control PCB with the correct part.
5. Use surge protection: After repair, connect the fryer through a quality surge protector to reduce the risk of future MCU errors from power spikes.

Warning: Do not attempt to reflash firmware without official Klarstein tools and files; this can permanently disable the board.

E14 error; unit may not start or may stop with a beeping alarm shortly after beginning a cycle.

Possible Causes