TROUBLESHOOTING TIPS
SYMPTOM
Thermostat Dead
SYMPTOM
Heat Or Cool Inoperative
SYMPTOM
Temperature Reading
Incorrect
After installation, allow the thermostat up to 30 minutes for an accurate temperature reading.
SYMPTOM
Display Problem
SYMPTOM
Aux Heat On Too Often
SYMPTOM
Heat Pump Heats In Cool
Mode & Cools In Heat Mode
SYMPTOM
Thermostat display momentarily
goes blank when making a call
for heating or cooling
For Technical Assistance Call: 800-824-3005, www.leviton.com
1. Check power to the thermostat
2. Check wiring diagrams
1. Check for break in W or Y wire
2. Allow minimum off time to pass
3. Check HVAC Settings for correct settings
1. Allow 30 minutes for thermostat to adjust
2. Adjust calibration offset
3. Change display option ˚F or ˚C
1. Cycle power to the thermostat (RC and RH)
1. Heat Pump is not able to meet load due to cold weather
1. The setting for the Reversing Valve is incorrect - Reverse the setting
for Reversing Valve (Cool or Heat)
1. Thermostat is resetting because of insufficient power. Connect common
wire or install 30A00 Power Supply Module will resolve the problem
ACTION TO TAKE
ACTION TO TAKE
ACTION TO TAKE
ACTION TO TAKE
ACTION TO TAKE
ACTION TO TAKE
ACTION TO TAKE
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