Honeywell PRO TH4000 series - In Case of Difficulty; Temperature Setting Issues; Flashing System Status Alerts; Missing Heat Status

Operating Manual
18
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).
“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 15).
“Heat On” is not
displayed
• Set the System switch to Heat, and set the temperature level above the
current room temperature (see page 7).
“Cool On” is not
displayed
• Set the System switch to Cool, and set the temperature level below the
current room temperature (see page 7).
To restore
Energy Star
®
default settings
Follow these steps to restore Energy Star default settings (see page 10):
1. Press SET 3 times to display “Set Schedule.”
2. Press and hold SET and RUN at the same time for 4 seconds.
3. Press RUN.
In case of difficulty