PRO TH3110B Digital Thermostat
11
Operating Manual
10
“Cool On” or
“Heat On” is
flashing
• Compressor protection feature is engaged. Wait 5 minutes for the system
to restart safely, without damage to the compressor (see page 8).
In case of difficulty
If you have difficulty with your thermostat,please try the suggestions below. Mostproblems can be corrected quickly and easily.
Display is blank • Make sure fresh AA alkaline batteries are correctly installed (see page 9).
“Heat On” is
not displayed
• Set the System switch to Heat, and set the temperature level above the
current room temperature (see page 5).
“Cool On” is
not displayed
• Set the System switch to Cool, and set the temperature level below the
current room temperature (see page 5).
Temperature
settings do not
change
Make sure heating and cooling temperatures are set to acceptable ranges:
• Heat: 40° to 90°F (4.5° to 32°C).
• Cool: 50° to 99°F (10° to 37°C).
Heating or
cooling system
does not respond
• Set system switch to Heat (see page 5). Make sure the temperature is
set higher than the Inside temperature.
• Set system switch to Cool (see page 5). Make sure the temperature is
set lower than the Inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• Wait 5 minutes for the system to respond.
In case of difficulty