Honeywell RTH6300B Operating Manual page 19

RTH6300B Programmable Thermostat
In case of difficulty
Heating or
• Press
cooling system
does not respond
• Press
• 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.
"Cool On" or • Compressor protection feature is engaged. Wait 5 minutes for the system
"Heat On" is
flashing
Other problems • If the above measures do not resolve the problem, check the In Case of
S S Y Y S S T T E E M M button to set system to Heat. Make sure the temperature
is set higher than the Inside temperature.
S S Y Y S S T T E E M M button to set system to Cool. Make sure the temperature
is set lower than the Inside temperature.
to restart safely, without damage to the compressor (see page 14).
Difficulty section in your thermostat Installation Guide.
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