TFC Group Towerstat SP STTR/SP - Manual (Page 19)

2.Pressing any button will terminate the anti-freezing mode and back
to normal operation mode.
3.The default set temperature of the anti-freezing mode is 7ºC.
BATTERY REPLACEMENT
It is recommended to replace the batteries when the display is show-
ing the . To replace the battery,
1.Turn off your heater or cooler first.
2.Remove the front housing of the thermostat.
3.Replace the old batteries with 2 new AA alkaline batteries.
4.Replace the front housing.
5.Press the reset button once and then turn on the main switch of the
system.
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