The MC200 has three Run modes: WINTER, SUMMER and OFF.
Run Mode
Winter - the heating operates when any program is in a “HEAT ON” period. The heating also operates to maintain the Night Temperature if this has been set. The heating also operates when the temperature drops below the frost temperature.
NOTE: Summer/Winter mode has no connection with the clock change from GMT to BST.
Summer - the fan operates to circulate air when switched on manually by the fan button. With certain types of heater or certain types of installation, fan-only operation may not be appropriate and the fan control circuit should not be used. In SUMMER the heating never operates unless the
temperature drops below the frost temperature.
OFF - the heater never operates unless the temperature drops below the frost temperature if this has been set.
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 + or - button to change between WINTER, SUMMER & OFF.
• 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 Scree