Honeywell HZ-789 EnergySmart Electric Oil Filled Radiator Whole Room Heater Digital EasySet Controls w/ 1-12 Hour Timer, Adjustable Thermostat & 3 Heat Settings Silent Operation Large, easy-pull luggage style handle & easy glide wheels Exceeds industry Safety Standards: Tip Over Switch, overheat protection, 3-prong grounded plug & heavy duty power cord Kindly refer the user manual given below for troubleshooting steps