Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
I have changed the batteries but it still reads only a 2. Help it is 100 degrees outside and in.
Without more info it sounds like one leg on led readout went bad , i hate to say but you need to replace t-stat, in the mean time if you go to breaker panel and shut off power to both the (a/h and cond.)inside and outside unit take t-stat off the wall and disconnect all wires there should be green,red,yellow and white wires.If this is the case take yellow,red & green and twist these 3 together and put a wir nut on them.then turn power on to both units and this will get you a/c the only problem with this is, unit will run constantly until you either diconnect wires or turn power back off. hope this helps
Posted on Sep 15, 2009
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Posted on Jan 02, 2017
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