Step 1: Check that the connection to the plug is secure and not loose and also check how many appliances are using the same output. Failure could be caused by over current in your mains.
Step 2: Check the iron's power cord for visible signs of damage (e.g. kinks, flaring of the braiding). Remove the rest of the appliances and switch it on again.
Step 3: If the mains power goes off again, contact the Russell Hobbs Customer Service Department via our webform here.