How to fix a blank LCD screen and programming issues on my Garrison 52-2544-0?
- KKayla WhiteAug 1, 2025
If the LCD screen is blank and the Garrison thermostat isn't activating the heating at programmed times, start by checking if the circuit breaker is open or if there has been a power failure. Ensure the thermostat is wired to a 500W or greater circuit. If wiring is the issue, consult a certified electrician. Try pressing the RESET button under the faceplate. Review the programming guide to confirm programs were entered correctly and the clock is set to the correct time (AM/PM). You can reset program settings only by pressing OPTION/COPY for 3 seconds to enter the option mode, then press PROG for 3 seconds. To restore all settings to factory default, press and hold the HOLD/DAY and the RESET button at the same time.


