Honeywell RTH 3100C - Manual (Page 19)

RTH3100C
17 69-2340ES—01
Troubleshooting
SETUP
WIRING
ASSIST
ANCE
TROUBLESHOOTING
Troubleshooting
If you have difficulty with your thermostat, please try
the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank • Check circuit breaker and reset if
necessary.
• Make sure power switch at heating
& cooling system is on.
• Make sure furnace door is closed
securely.
• Make sure fresh AA alkaline
batteries are correctly installed
(see page 7).
Heating or
cooling system
does not
respond • Press SYSTEM button to set system
to Heat. Make sure the temperature
is set higher than the Inside
temperature.
• Press SYSTEM button to set system
to Cool. 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.