E5 appears on the display and the unit shuts off shortly after starting.

Safety first: Always unplug the Granitestone air fryer before removing covers. Do not touch exposed live terminals.

Steps to address E5:

• 1. Check outlet and power strip: Plug the air fryer directly into a known-good wall outlet (no extension cord or power strip). Avoid sharing the circuit with high-draw appliances like microwaves.
• 2. Inspect power cord: Examine the power cord for cuts, kinks, or burn marks. Gently wiggle the cord at the entry point to the fryer while it is off; if it feels loose, the internal connection may be failing.
• 3. Reset the unit: Unplug for 10 minutes, then plug back in and test. If E5 returns immediately, internal components may be at fault.
• 4. Internal inspection (advanced): Remove the housing to access the control PCB. Look for burned components, bulging capacitors, or cracked solder joints near the AC input and transformer or switching power supply section.
• 5. Repair or replace: If you see obvious PCB damage, the safest solution is to replace the entire main control PCB with a Granitestone-compatible board. Component-level repair should only be attempted by someone experienced with electronics.
• 6. If unsure: Because E5 can indicate serious electrical issues, consider having a qualified appliance technician test the unit for safe operation.