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Symptom Remedy
The system isn’t turning on Check the wiring (see Installation, Page 4)
Check the batteries (SC2000 only)
LCD is blank, or displaying “LO BAT” SC2000: Replace batteries, or make sure the existing ones are properly
installed (see Installing and Changing Batteries, Page 6)
SC2001: Verify 24 VAC is at thermostat.
Thermostat is not properly controlling the fan Check that the Gas/Electric jumper setting matches your system (gas
or electric)
Thermostat is continuously turning on and off Increase the temperature differential (see Setting a New Temperature
Differential, Page 15)
Temperature displayed is not accurate Verify no heat producing objects are located near the thermostat.
Verify thermostat has adequate air flow to it.
Troubleshooting
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