Safety: Ensure the appliance is unplugged before any checks. Mains voltage is hazardous.

Basic checks: Confirm the wall socket works with another appliance. Check that any external power switch on the air fryer is in the ON position.
Inspect power cord: Look for visible damage. If the cord is cut, frayed, or burnt, replace the power cord set with an identical rating.
Open housing (advanced): Remove covers to access the control PCB and mains input area.
Check internal fuse: Many Russell Hobbs air fryers have a small glass or ceramic fuse on the PCB. Test continuity; if blown, investigate for shorts before replacing with the exact same rating.
Thermal fuse check: Some models route mains through a thermal fuse near the heater. Test continuity; if open, replace with the correct temperature-rated part.
On/off switch: If your model has a mechanical mains switch, test it for continuity when ON. Replace if faulty.
Reassemble and test: After replacing any failed component, reassemble fully and test. If the fuse blows again immediately, disconnect and seek professional service as there may be a serious short on the PCB or heater.

Air fryer does not power on at all; no lights or display.

Possible Causes