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TROUBLESHOOTING TIPS
SYMPTOM
ACTION TO TAKE
Thermostat Dead
1.
Check power to the thermostat
2.
Check wiring diagrams
SYMPTOM
ACTION TO TAKE
Heat Or Cool Inoperative
1.
Check for break in W or Y wire
2.
Allow minimum off time to pass
3.
Check system options for correct settings
4.
If arrow is blinking, wait until startup delay expires
5.
Mode is Off (Select Heat, Cool, or Auto)
6.
Remote system is overriding thermostat
SYMPTOM
ACTION TO TAKE
Control By Remote System
Not Working
1. Check wires and connections to the section marked “Comm”
2. Check thermostat address setting
3. Check communications mode setting
4. Check setup of the remote system
Ensure that all setup items for the thermostat and the remote system are set to the proper
configurations for communication
SYMPTOM
ACTION TO TAKE
Temperature Reading
Incorrect
1.
Allow 30 minutes for thermostat to adjust.
2.
Adjust calibration offset
3.
Change setup option to display oF or oC
After installation, allow the thermostat up to 30 minutes for an accurate temperature reading
SYMPTOM
ACTION TO TAKE
Display Problem
1.
Cycle power to the thermostat (R).
SYMPTOM
ACTION TO TAKE
Aux Heat On Too Often
1.
Heat Pump is not able to meet load due to cold weather
2.
Thermostat is in EM Heat mode – Set thermostat to Heat or
Auto mode
In EM Heat mode, only the auxiliary heat is turned on
SYMPTOM
ACTION TO TAKE
Heat Pump Heats In Cool
Mode & Cools In Heat Mode
1.
Reversing valve is connected to wrong terminal - move
wire from B to O or from O to B
The wires connecting the reversing valve may be reversed - (See Note 1 - Page 7)
