14 69-1713
Built-in Compressor Protection
The TH5110D Thermostat has built-in compressor 
protection (minimum-off timer) that prevents the 
compressor from restarting too early after a shutdown.
The minimum-off timer is activated after the compressor 
turns off. 
If there is a call during the minimum-off timer, the 
thermostat flashes “Cool On” or “Heat On”
 a
 in the display. 
 When the minimum-off timer expires, “Cool On” or 
“Heat On”
a
 appears solidly in the display and the 
compressor and the fan turn on.
_________
 a  
Heat Pumps only.
69-1713.fm  Page 14  Tuesday, June 8, 2004  10:33 AM