TROUBLESHOOTING
No Heating
With the SYSTEM switch set to HEAT, when the setpoint temperature is raised or lowered past the room temperature, the thermostat will make a soft click sound. Usually, the sound indicates the thermostat is operating correctly. If the system does not come on, check the system or contact your heating/ cooling service person. If the thermostat does not click try the Reset Operation listed below.
No Cooling
Same procedure as heating except set SYSTEM switch to COOL. There can be up to a 5 minute compressor
Blank Display
A blank digital display usually indicates loss of power to the thermostat from the heating and cooling system or indicates the thermostat has received a voltage spike or static discharge (see Reset Operation).
The thermostat must have 24 volts constantly supplied to terminals RC/RH and C. A blown fuse or tripped breaker could cause a power loss. Also, many furnaces contain safety or limit devices that can disconnect the power to the thermostat intermittently.
Reset Operation
If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation you can reset the thermo-
stat by pressing 
, 
and move the SYSTEM switch from OFF to HEAT at the same time. This also resets the factory defaults to the configuration menu. If the thermostat has power, has been reset and still does not function correctly contact your heating/cooling service person or place of purchase.
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