Honeywell International Inc. RTH9590WF01 Manual De Usuario

Installing your thermostat

8  Switch heating/cooling system ON.

8a  Verify that the C wire is 

connected at the thermostat and 
at the heating/cooling system.

8b  Make sure the heating/cooling 

system door is firmly secured.

8c  Switch power back ON for your 

heating/cooling system at the 
breaker box or its power switch.

or

Circuit 

breaker  

box

Heating/cooling 

system power 

switch