Ask Experts Questions for FREE Help !
Ask
    enggw's Avatar
    enggw Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Aug 13, 2006, 01:18 PM
    Thermostat wiring issue
    I have installed a new condensing unit and cannot get it to turn on or the furnace to operate in the heat mode. What voltage reading should I expect at the thermostat? I do not seem to be reading 24 volts and am not sure if it is the transformer as I did not touch it. I am wondering if the transformer went bad. The thing is that the fan goes on when the thermostat is pushed to the fan position. That is what is throwing me off. If the power was not available then the fan would not activate. Any ideas??
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #2

    Aug 13, 2006, 02:31 PM
    You can't measure 24 volts at the stat , since there is no return, or common, back to the transformer. The feed is usually the red, connected to R on the stat, and the heat switch leg should be the white connected to the W terminal on the stat.

    Y is the terminal for the power to the compressor.

    If this is all correct, you may have a defective stat.

    Haing the fan start in fan mode proves there is power at the stat.
    Cary Towne's Avatar
    Cary Towne Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Oct 24, 2006, 06:24 PM
    I have a carrier heat pump system. When I turn my unit to cool mode the 5 amp fuse blows and there is no power.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Thermostat Wiring Help [ 10 Answers ]

I'm replacing my thermostats with Honeywell Chronotherm IV Model 8600 (power stealing) and having some trouble with wiring. I have five thermostat wires coming out of the wall - red, white, green, blue and yellow. I have a 24 volt system with gas forced air and central a/c. All components are...

Wiring issue with a Hunter Ceiling fan [ 2 Answers ]

Thanks in advance for anyone who can help me. I just moved into a brand new home and the Master Bedroom is pre-wired for a ceiling fan. It has two wall switches, one to control the light and one for the fan. The Hunter fan has a black, a white, a black/white and two green wires. The prewire...

Wiring a new thermostat [ 1 Answers ]

How do I wire a White-Rogers thermostat (Model#1F82-261) to a Goodman Heat Pump (Model#CPKE30-18). I know red wire goes goes to "R" terminal, green wire goes to "G" teminal but I need to know about the white, the yellow, the light blue, and the brown wire. My heat pump is a single stage cooling and...

Thermostat wiring [ 2 Answers ]

Is there a special thermostat for an electric furnace with A/C/. Don't you Want the blower to come on as soon as the electric heat is energized? In other words the same time.

2 wire Single Stage Thermostat Issue [ 1 Answers ]

Thought this would be easy, Here is the problem, the furnace stays on all the time even thought the programmable themostat is set at a lower temperature than the room. The wiring must not be correct but there are only 2 wires. One for the transformer and one for the heat control. Please...

View more questions Search