Honeywell THX9000 21

Prestige™ THX9000 Thermostat

In case of difficulty

Heating or cooling system does not respond

•Press SYSTEM to set system to Heat. Make sure the temperature is set higher than the Inside temperature.

•Press SYSTEM 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.

•If “Waiting For Equipment” is displayed, the compressor protection timer is on. Wait 5 minutes for the system to restart safely, without damaging the compressor.