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  1. Replies
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    Thanks for providing feedback

    Thanks for providing feedback
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    The red and white wires connect to the Ecobee....

    The red and white wires connect to the Ecobee. The blue and orange wire connect to the humidifier.
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    It should not matter but with the issues that you...

    It should not matter but with the issues that you are having I was thinking it would be and easy test to run.




    Trying it without the jumper would be a good test. If you try this test with...
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    547

    Is the factory RC/R jumper installed? Have you...

    Is the factory RC/R jumper installed? Have you tried moving the R wire to the RC terminal at the thermostat? Have you verified the W and R wires are connected to the correct terminals at the furnace...
  5. Look like you may have a heat pump. Did you try...

    Look like you may have a heat pump. Did you try to configure the thermostat as a heat pump. If your system did not work correctly when you set it up as a heat pump did you try to change "Type of...
  6. I have tried to test the TH9320WF5003 Wi-Fi 9000...

    I have tried to test the TH9320WF5003 Wi-Fi 9000 that I have but I have not been able to duplicate the "Switch to Permanent Hold" issue that you have. Please let us know if you are able fix the fix...
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    Do you have a wiring diagram of your life breath...

    Do you have a wiring diagram of your life breath dehumidifier that you could upload?
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    Take a look at this thread for some general...

    Take a look at this thread for some general information on this subject
    ...
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    309

    Is the wired outdoor sensor connected to your...

    Is the wired outdoor sensor connected to your Venstar T7850 or is the wired outdoor sensor just connected to the thermostat wiring at the heat pump?
  10. Checking the common wire on the outdoor...

    Checking the common wire on the outdoor condensing unit will not confirm the common on the wiring going from the thermostat to the indoor air handling unit.
  11. it is imposable to go by colors alone. There are...

    it is imposable to go by colors alone. There are some standards for thermostat wire colors like yellow for cooling but as you can see your system is not wired that way. The best way to check the...
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    The Venstar T7900 will only operate with one 24...

    The Venstar T7900 will only operate with one 24 volt transformer. The Venstar value series thermostats have the ability to run off of a two transformer system
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    Using the wiring diagram below you would need two...

    Using the wiring diagram below you would need two relays. The existing Ecobee wiring for the fan, cooling and heating would remain the same. With this wiring you will need to change your Ecobee setup...
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    Are you saying the humidifier does not have its...

    Are you saying the humidifier does not have its own thermostat? What terminals in the humidifier do the ACC+ and ACC- wires connect to? When you setup the Ecobee did you select 2 wire or 1 wire for...
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    You could add relays that would allow either...

    You could add relays that would allow either thermostat to energize the humidifier. To come up with a way to wire the relays can you tell us if the humidifier has it’s own transformer? What terminals...
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    Does your system have a zone controller? Does...

    Does your system have a zone controller? Does your system have one or two furnaces.
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    The Lyric is not going to be compatible with your...

    The Lyric is not going to be compatible with your existing thermostat. Your existing thermostat is a line voltage thermostat. Make sure the breaker is off. The black and white wire may have high...
  18. Can you clarify how many stages of cooling that...

    Can you clarify how many stages of cooling that you have? Two stage cooling with one stage heat pump is not typical. How many compressors outside do you have. Was there a Y or Y1 wire on the existing...
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    Use the drawing from post #2 of the thread. RH...

    Use the drawing from post #2 of the thread. RH for the transformer was a recommendation for a Nest thermostat. You can you RC as recommended by Ecobee.

    Pam-1 white / 0V > C terminal on thermostat ...
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    It is not normal for the thermostat to call for...

    It is not normal for the thermostat to call for the fan to run all the time unless the fan mode is set to on. Have you tried to cycle through the different fan modes to insure that the thermostat is...
  21. Are the existing thermostats all low voltage...

    Are the existing thermostats all low voltage 24vac thermostats?
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    Typically larger wires on a thermostat indicate...

    Typically larger wires on a thermostat indicate high voltage of 120vac or more. If you know for sure the exiting wiring has 24vac you could wire nut 18 gauge wire to 14 gauge wire. If you are not for...
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    Have you seen these threads? ...

    Have you seen these threads?

    http://www.thermostatforums.com/showthread.php?319-Nest-Power-Supply&highlight=Fireplace
    ...
  24. I think it would be best to get a HVAC tech to...

    I think it would be best to get a HVAC tech to wire this for you. I also think it would be best to just wire in the furnace first with a common wire and test the furnace prior to connecting the evap...
  25. Your best option may be to remove the manual...

    Your best option may be to remove the manual change over switch and leave the thermostat powered all time and wired as a two transformer setup. You will need a common wire
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