Troubleshooting
If you have difficulty with your thermostat, please try the following
suggestions. Most problems can be corrected quickly and easily.
Display is
blank
Heating
or cooling
system does
not respond
Cannot
change
setpoint
"Cool On" or
"Heat On" is
flashing
"Heat On" is
not displayed
"Cool On" is
not displayed
For assistance with this product, please visit resideo.com.
Electrical Ratings
Terminals
W Heating
W Power Pile Heating
Y Compressor
O Changeover, Cooling
B Changeover, Heating
G Fan
Make sure fresh AAA alkaline batteries are correctly
•
installed.
Set system switch to Heat. Make sure the temperature is
•
set higher than the Inside temperature.
Set system switch to Cool. Make sure the temperature is
•
set lower than the Inside temperature.
Wait 5 minutes for the system to respond.
•
Verify the system switch is set to Heat or Cool mode. The
thermostat should allow you to change the setpoint within
the following ranges:
Heat: 40 °F to 90 °F (4.5 °C to 32 °C).
•
Cool: 50 °F to 99 °F (10 °C to 37 °C).
•
Compressor protection feature is engaged. Wait
•
5 minutes for the system to restart safely, without
damage to the compressor.
Set the System switch to Heat, and set the temperature
•
level above the current room temperature.
Set the System switch to Cool, and set the temperature
•
level below the current room temperature.
(50 Hz/60 Hz)
20 VAC-30 VAC
20 VAC-30 VAC
20 VAC-30 VAC
20 VAC-30 VAC
20 VAC-30 VAC
Voltage
750 mV DC
12
Running Current
1.0 A
100 mA DC
1.0 A
0.5 A
0.5 A
0.5 A