This menu is the first presented upon powering up the controller.
It allows basic operation of the heater to take place:

• Heater On/Off
• Temperature adjustment
• Basic status and fault monitoring
• Thermostat or Fixed power modes

The heater can be set to run, or stop, by holding down the Centre keypad button.

If the heater is off, hold down the Centre keypad button.
A "Starting" message will then appear at the bottom of the screen.

Once fully ignited and running, this will change to "Running", which indicates the heater is now obeying the user's desired thermostat setting, or fixed power demand.

If the heater is off, hold down the Centre keypad button.
A "Shutdown down" message will then appear at the bottom of the screen.
During this time, the heater will be stop the fuel delivery, and heating the glow plug to expel unburnt fuel. The fan will continue to run, and may speed up. This takes about a minute to complete.

The message then changes to "Cooling" and the fan will continue to run until the heater has cooled sufficiently (about 55 degC body temperature).

Finally the messages will disappear once the heater has completed the shutdown sequence.

The desired thermostat temperature, or fixed power setting, can be altered by pressing the Up button to increase, or Down to decrease the setting.
The current setting can also be observed, without changing it, by briefly pressing the Centre button.

Pressing and holding the Down keypad button will enable the selection of Thermostat or Fixed power modes.

The active mode will be surrounded by a loop, and can then be changed by using the Left or Right keypad buttons.
If Fixed mode is selected, the demanded power is then presented by showing the frequency the pump will run at, in Hertz. eg:

Should a fault be detected by the heater, an error message will be presented at the bottom of the screen, in two lines.
The top line will indicate the error code, eg E-03.
The second a description of the fault, eg: Glow Plug Fault