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Bryant thermostat screen is blank. Can't find any batteries. Has only two wires out of the wall a red and a white one.

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Pull front cover off thermostat. You will see the batteries

Posted on Dec 14, 2018

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  • 572 Answers

If it only has 2 wires, and the thermostat is digital, it has to have batteries. If you can't find them, pick up a new thermostat (heat only needed since you only have 2 wires) and replace. Red is power 24v & White is heat.

Posted on Dec 14, 2018

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Anonymous

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Posted on Jan 02, 2017

HANK MCNEIL

  • 252 Answers

SOURCE: my honeywell ct87K thermostat will not turn the heater on

On your thermostat - R is the power in terminal. Y is the cooling out. W is the heating out. (G is fan out). It does not matter which wire goes to R, the other should go to W - if no heat with a call, the thermostat is bad.

Posted on Apr 17, 2009

Bill Long

  • 606 Answers

SOURCE: My son took the old thermostat off the wall and

Usually when you have the Y terminal on the thermostat (that would be cooling terminal), there should be 4 screws to connect to. They would be R- to transformer, W- to furnace or heat, Y- to outdoor air conditioner and G- to furnace blower.
You might go to the furnace to see where these wires go, they should have the same terminals on the furnace except for cooling, it usually connects to the outdoor unit wire directly.

Posted on Oct 13, 2009

milten1

milten1

  • 1304 Answers

SOURCE: I HAVE 3 wires from the wall: bLK, WHITE AND a

one set goes to your heater,,,,
red/black gr
the other set is either your voltage in, or your t-stat will control 2 units

Posted on Nov 04, 2009

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Anonymous

  • 614 Answers

SOURCE: blank thermostat

Check voltage at unit. Also check the 5 amp fuse in the unit. If this unit has a float switch in the drain line check that. Rus

Posted on Dec 03, 2009

Anonymous

  • 351 Answers

SOURCE: I bought a Utilitech 7 day digital in wall timer,

HI .. if the switch has only a black and white wire attached, and there are no other wires in the wall box, then you cannot use this timer switch. You need to return it and get a timer that does not use a neutral connection. The wires you have are a switch leg from the light and there is a white wire but it is not a neutral.
If there are other wires in that wall box , tell me and we can chat more about how to remedy this .

Please Vote !!

Posted on May 25, 2010

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I have a 3 ton Bryant split unit I'M trying to rewire.


what colors are landed where on the tstat? and does the tstat wire that goes BOTH inside and outside have the same colors. also why are you in this situation, has everything been unhooked?

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

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Screen on Bryant thermostat is blank---Batteries?


Heidi, all thermostats that I am familiar with require AAA, AA or nine volt batteries and are accessed usually be separating the thermostat from the sub-base. Some older stats have a 'ribbon' connector that maintains connection during removal, but most of the newer stats have 'pin' connectors. A picture would help...could you post one with a smart phone ??

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Wires don't match the new thermostat posts. The wires from the furnace are Red,Blue black and white The posts in new thermostat are B O G Y not used R and Rc Can't figure which to put


The wire colors are for the following functions ......red - 24 volts white - heat yellow - AC green/blue - blower (fan) red is connected to the R with a jumper between R and Rc What type of furnace/heat do you have ???? Electric. oil, gas .Forced hot air, baseboard, steam, heat pump, or ?????? Different systems use different connections and need a specific thermostat for that application !!!

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Air conditioning condensor will not run from thermostat have to go outside remve covers and jump thermostat connection . Then runs fine and cycles problem is intermitant


If it was me I would make sure the weed wacker hadnt attacked those wires as they leave the area leaving the house making their way to your condensing unit. Next, follow those wires back to your furnace control terminal area. Blower vibration can cause those little wires to break over time. Take care not to cause a break. Next, pull the thermostat off its base wall mount and jumper the red and the yellow wire, sometimes there is a blue color wire instead of yellow. If the unit outside comes on after this trick, make sure rc and rh are jumpered together on the thermostat terminal base and if they are then its your thermostat. One last thing, if someone has changed that thermostat since last cooling season, the thermostat wiring should be red to r terminal, white to w, green to g, blue or yellow to y terminal. Again rc and rh are usually jumpered. There are exceptions and at the very least see that the red wire is under the rc terminal.

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1 Answer

My honeywell ac panel went blank when i turn the heat on and the heat don"t start , the ac works fine


I would check a couple things lets start with the thermostat itself remove from the wall mount and check to see if the red and white wires are attached. Does this thermostat take batteries? If so replace the batteries. If still no heat make a jumper and jump out the red and white wires this should turn your heat on and now means that it is a thermostat problem. Purchase a new one and pay attention to all of the wires and where they go.Good luck

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I have a bryant model 702b packaged unit with 5 wire thermostat wiring coming out of the unit. R Y B G and W. The thermostate in the house is 5 wire and goes to the old central unit and them has a 4 ire...


R-Red is power
Y-Yellow is cool
B-Blue is cool as well
G-Green is fan leg
W-White is usually heat Leg


If you have no indoor unit and this is a ac/gas or
electric outdoor unit try this.

R to R/Red to Red
G-G/Green to Green
Y-Y/Yellow to Yellow
W-W/White to White
-Dont Hook up Blue.

Turn power back on turn the fan to on,fan should run
Turn to Heating, heating should come on
Turn on Cooling,if cooling does not come on switch yellow with blue.

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Hello,You forgot to wire the O terminal w1 witch is the reversing valve.It is important to check if old stat is using O or B in witch case B terminal=w1 leaving O unused.

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Replaced Bryant T-stat model TSTATBBNB001 with Honeywell t-stat


Your original wiring configuration seems to indicate that you have an air conditioner (not heat pump) and either a gas or electric furnace. If this is the case you may need a different thermostat for your application.

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From the furnace what are the blue, white, green, red wires


here's a link to a wiring diagram which is pretty standard.
http://ingramswaterandair.com/images/HCD1%20AC%20Models%20Installation%20Manual.pdf
Color what it does terminal
Blue 24V common C
White to heat control (gas valve) W
Green manual fan operation G
Red 24V power to thermostat R
Yellow activates comp during cooling Y

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