Fan assisted storage heaters blow warm air into your room from the bottom of the heater. Some of these will also have a convector heater that works like a combination storage heater.
Input
The input (or charge) control tells the heater how much heat to store overnight.
In milder weather, the input should be kept at a lower setting. When the weather is colder, set it to a higher setting so more heat is stored. You should only need to change this to match the weather and the amount of heating you need. At night when the heater is charging, make sure the boost is off and the temperature control is set to a minimum in order for the heater to charge fully.
Some fan assisted storage heaters have an automatic input control. This is a sensor that monitors the temperature of the air whilst the heater is charging. Once you've chosen a setting that's good for you, there's no need to change it. The heater will adjust itself to match your choice.
Output
Some models will have a two-speed fan to control the output of the heat. For normal use, set the fan to a lower setting. To heat the room quickly, use the high (or boost) setting.
If it has a convector heater, the on/off switch and room controls are normally on the right hand side. In order to make the most of your stored heat on the cheaper rates, only use the convector heating if necessary.