Honeywell RTH4300B Owner's Manual - Page 17

In case of difficulty - problems

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In case of difficulty RTH4300B Programmable Thermostat 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 14). Heating or • Set system switch to Heat (see page 6). Make sure the temperature is cooling system set higher than the Inside temperature. does not respond • Set system switch to Cool (see page 6). Make sure the temperature is set lower than the Inside temperature. • Wait 5 minutes for the system to respond. 15

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RTH4300B Programmable Thermostat
±³
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 14).
Heating or
cooling system
does not respond
•
Set system switch to Heat (see page 6). Make sure the temperature is
set higher than the Inside temperature.
•
Set system switch to Cool (see page 6). Make sure the temperature is
set lower than the Inside temperature.
•
Wait 5 minutes for the system to respond.
In case of difficulty