‘System Off’ will appear if the user has set the Run Mode to OFF. In this mode the heater will never operate unless the temperature drops below the frost set point.
To cancel this and regain heating control, follow the next procedure.
Procedure
• From the Home Screen, press the ► button SIX times until “Run Mode” appears. (if already password protected you may need to enter your 4 digit number).
• Press the + button ONCE to alter to WINTER
• Press the 
button to save changes, ‘Setting Saved’ will briefly appear, or press the X button to exit without saving.
• Press the X button to return to the Home Screen.
Conversely, if you require the controller to be forced into an OFF period, follow the above
procedure and alter the mode to OFF.