Source Green Heat SGH-750 - Manual (Page 5)

2) By pressing the
0
C/
0
F/Down button, you can switch the temperature format from Fahrenheit to
Celsius and vice versa.
3) By pressing the TIME button, the LED display will switch from the temperature status to the TIME
status and begin to flash. The default time will display “--“. This means that the TIME is not
activated and, therefore, the heater will remain on and continue to heat cycle. You must press
the HI/LOW/UP button or the
0 C/ 0 F/DOWN again within (5) seconds to set the time. Each time
you press the HI/LOW/UP button, the time will increase by 0.5 Hr. If you press the 0 C/ 0 F/DOWN
button, the time will decrease by 0.5 Hr. The maximum value for time is 8.0 Hrs. If you do not
press the HI/LOW/UP button or
0 C/ 0 F/DOWN within (5) seconds, the time status will switch back
to the temperature status.
Press TIME to switch
to time status, then
press HI/LOW/UP
button once within 5
seconds to scroll up
5 seconds later the
value switches to
ambient temperature
Press the
0
C/
0
F/Down to
switch from Fahrenheit
to Celsius.