Question about Carrier BCA101R Air Conditioner

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Have an old carrier package unit. Bought it used so unhooked. Want to know how to wire it back up to power and thermostat. Below is not my model, it is 50mh024340c

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Carrier Thermostat Model TSTATCCPB501 ER code

I gave up and called a local HVAC business. This thermostat is discontinued and a new one will be purchased and installed.

Posted on Dec 16, 2008

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jumptrout51
  • 3361 Answers

SOURCE: Replace thermostat

Typical color codes in Florida are;
white to W1 for heat
yellow to Y for compressor
red to R-RC-RH for power in
brown to W2 and or emergency /auxillary heat
green to G or Fan
orange to reversing valve(o/b)
blue to common.
You can open the control panel on the unit to verify these colors and components.

Posted on Feb 21, 2009

farfield
  • 462 Answers

SOURCE: need wiring diagram for 1980's 3 ton package unit

I assume you know if this is correct voltage and single or 3 phase, and whether it will fit your application or not, how is the duct work going to attach, how many people will be in the conditioned area, what is the building made of, how much insulation is has...

A little more to it than just "turn it on".


If you get the models and serial and can contact the manufacturer or their representative you might get a wire diagram. Most any package unit would do. As long as you keep the original equipment controls. If you "patch" it up it may be hazardous by not having safety's where it was designed for. Or for instance It may have a anti freeze thermostat. By passing this could lead to coil freeze up and compressor damage. Leaving out a pressure switch (if any) may do the same or could become dangerous to people in the event of fan motor failure. A low temperature fan speed switch may not be needed now unless you plan to run the AC in below 55'f.
And a few dozen other factors that might need to be considered.


If you feel confident after this then contact carrier.

Please rate me as high as you can and thanks for using fixya.

Posted on May 19, 2009

shastalaker7
  • 1515 Answers

SOURCE: Anyone have the service/installation manual for

HI, THE 351 ON THE MODEL NUMBER SHOWS NOTHING. BUT THE REST IS CORRECT. IF THIS IS A HEAT PUMP, IT WILL HAVE MANY MORE CONTROL WIRES. IF YOU ARE BLOWING THE CONTROL FUSE YOU HAVE A DEAD SHORT. GO TO THE OUTDOOR UNIT AND WRITE DOWN THE COLOR AND AMOUNT OF WIRES COMING OUT OF THE UNIT, AND WHAT COLOR THEY ARE CONNECTED TO. THESE GO BACK TO THE INDOOR UNIT. RED IS ALWAYS YOUR HOT, Y IS FOR COOLING, G IS FOR FAN, AND W IS FOR HEATING. IF YOU HAVE ORANGE, BROWN, PURPLE BLACK AND SO ON COMING FROM THE OUTDOOR UNIT, YOU HAVE A HEAT PUMP. ON A SIMPLE CENTRAL UNIT, ONLY 2 WIRES TO THE OUTDOOR UNIT, RED AND WHITE. RED TO RED, WHITE TO Y ON THE INDOOR UNIT. LOOK AT THE SCHEMATIC ON THE INDOOR AND OUTDOOR UNIT, AND IT WILL SHOW YOU WHAT COLOR GOES WHERE, JUST LOOK AT THE LEGEND FOR THE LOW VOLTAGE CONNECTIONS AND THERMOSTAT, AND FOLLOW IT. YOU WILL NOT NEED ANY MANUAL. MAKE SURE YOUR RED WIRE IS NOT TOUCHING METAL ANYWHERE. KEEP ME POSTED ON THE OUT COME, WE WILL HAVE UP UP AND RUNNING. LET ME KNOW IF YOU HAVE A HEAT PUMP.
SHASTALAKER7
A/C AND HEATING CONTRACTOR

Posted on Mar 16, 2011

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Hi smargyle,

Welcome to fixya!

I can provide you with diagrams for the old Carrier therm and for the new Filtrete therm. But, I would need to know what the model numbers are for each therm plus how many speeds AC you have.

Please reply back with that information and we will get your AC back in working order.

Thanks,

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Wiring instructions for Thermostat Honeywell with Carrier Package


Jumper R to Rc and hook hot wire from transformer to R usually red wire
O = Reversing valve probably white or orange If you get heat when calling for cool or Vice Versa then switch wire from O to the B terminal.
Y = Contactor usually yellow
G = Blower usally green
Jumper Aux to E need to go to unit and use the wire that goes to your Auxiliary or 2nd stage heat
L = Light if you have this terminal on your unit then hook it up.
C = Common from transformer usually black, if you have this terminal on your unit hook this wire up.
Make sure you go to your unit and only hook these wires up if they go to these locations.

Jan 11, 2010 | Heating & Cooling

1 Answer

Need wiring diagram for 1980's 3 ton package unit


I assume you know if this is correct voltage and single or 3 phase, and whether it will fit your application or not, how is the duct work going to attach, how many people will be in the conditioned area, what is the building made of, how much insulation is has...

A little more to it than just "turn it on".


If you get the models and serial and can contact the manufacturer or their representative you might get a wire diagram. Most any package unit would do. As long as you keep the original equipment controls. If you "patch" it up it may be hazardous by not having safety's where it was designed for. Or for instance It may have a anti freeze thermostat. By passing this could lead to coil freeze up and compressor damage. Leaving out a pressure switch (if any) may do the same or could become dangerous to people in the event of fan motor failure. A low temperature fan speed switch may not be needed now unless you plan to run the AC in below 55'f.
And a few dozen other factors that might need to be considered.


If you feel confident after this then contact carrier.

Please rate me as high as you can and thanks for using fixya.

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