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Symptom Remedy
The system is not turning on Check the wiring (see Installation, Page 5)
LCD is blank or displaying “Lo Bat” Verify 24 VAC is at thermostat
Thermostat does not turn on the system as
frequently as it should
Decrease the temperature differential (see Setting a New Temperature
Differential, Page 9)
Thermostat is not properly controlling the fan Check the wiring (see Installation, Page 5)
Thermostat is continuously turning on and off Increase the temperature differential (see Setting a New Temperature
Differential, Page 9)
Temperature display is not accurate Verify no heat producing objects are located near the thermostat
Verify thermostat has adequate air flow to it
Display not correct Press the reset button once – display will be refreshed
Troubleshooting
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