In Case Of Difficulty - Honeywell RTH7400 Série Manuel Du Propriétaire

About your new thermostat

In case of difficulty

If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank
No response to
Make sure heating and cooling temperatures are set to acceptable ranges:
key presses (or
temperature will
not change)
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• If thermostat is battery powered, make sure fresh AA alkaline batteries
are correctly installed (see page 19).
• Heat: 40° to 90°F (4.5° to 32°C).
• Cool: 50° to 99°F (10° to 37°C).
21
RTH7400/RTH7500 Series
69-2222EF—07