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I have a carrier infinity system and changed to the nest. My
I have a carrier infinity system and changed to the nest. My nest is t recognizing that I have (what I think) is a multi speed fan system. When the heat kicks on with the nest now, it sounds much loud… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
Question for you regarding wiring a carrier infinity with a
Question for you regarding wiring a carrier infinity with a Honeywell lyric. I have a gas furnace and an AC condenser. Today the terminal with the abcd wires connected in the furnace has 2 sets of wir… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
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New system woke up to no a/c showing code 178, installed
installed friday came to dallas &installed @my sisters imfrom st louis … read more
BillyHvac
BillyHvac
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I have purchased A NEST wireless to replace my Carrier
Hello I have purchased A NEST wireless to replace my Carrier Infinity. But the Carrier is ABCD which NEST does not state they will work with. Is it High Voltage? … read more
BillyHvac
BillyHvac
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My ac stop working, my evolution thermostant says there is a
my ac stop working , my bryant evolution thermostant says there is a comunication problem code 178 … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
With a carrier infinity thermostat with abcd wiring,, blue,,
with a carrier infinity thermostat with abcd wiring, green, blue, white, red can I install a nest thermostat… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
I am installing a nest thermostat in lieu of an my
Hi I am installing a nest thermostat in lieu of an my communicating Bryant stat. I currently have ABCD labeled wires. Reading this thread, I understand I can move them in the furnace to RWYG. My quest… read more
BillyHvac
BillyHvac
Journeyman Service Technician
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Just got home and my AC is not working. My carrier infinity
Just got home and my AC is not working. My carrier infinity indoor thermastate says: system malfunction 178 indoor unit communication fault code: UI Sounds like thermastate and AC unit are not communi… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,887 satisfied customers
I am trying to replace a carrier infinity thermostat with
I am trying to replace a carrier infinity thermostat with another carrier thermostat Performance Edge TP-PAC01 my old stat has ABCD connections what terminals do I connect to on the new one?… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
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Thank you time and consideration! I've run into an ABCD
Hello! Thank you for your time and consideration! I've run into an ABCD wiring puzzle! I have a Carrier WeatherMaker infinity 58MVP100-F-1720 system with all Carrier parts including a 2 stage (suppose… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
I have a carrier infinity ac with ABCD wires. I want to
I have a carrier infinity ac with ABCD wires. I want to install a NEST thermostat, but don't know how to connect the wires… read more
Douglas
Douglas
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Can a Carrier Infinity thermostat be replaced with a Comfort series?
Can I replace a Carrier Infinity (ABCD) Thermostat with a Carrier Comfort Series TC-WHS-01? This is a hybrid heat system.… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,887 satisfied customers
I have a Carrier Infinity AC and thermostat. When the system turns on and a desire temper
I have a Carrier Infinity AC and thermostat. When the system turns on and a desire temperature was set, once the system reached the desired temperature it can't maintain it, then a “System Malfunction… read more
BillyHvac
BillyHvac
Journeyman Service Technician
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I am installing a Honeywell RTH8580WFinto a carrier infinity
I am installing a Honeywell RTH8580WFinto a carrier infinity heat pump model 38YDB. The infinity system has the four wire thermostat with Wires ABCD to corosponding ABCD connections at the outside uni… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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7,807 satisfied customers
I HAVE A CARRIER INFINITY THERMOSTAT WITH abcd WIRING, GREEN,BLUE WHITE
I HAVE A CARRIER INFINITY THERMOSTAT WITH abcd WIRING, GREEN,BLUE WHITE AND RED.CAN I CHANGE THIS TO HONEYWELL WIFI THERMOSTAT, DO I NEED A SEPARATE WIRE 24 VAC, TO POWER FOR WIFI . HONEYWELL SAID RET… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,887 satisfied customers
heres my question im working on a residential carrier infinity
heres my question im working on a residential carrier infinity system it has the infinity control on the wall abcd low voltage connections its connected to a carrier infinity air handler abcd d and c … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,887 satisfied customers
Currently have a Weathermaker 8000VS furnace (58UHV100---12120)
Currently have a Weathermaker 8000VS furnace (58UHV100---12120) that bit the dust. Homeowner's warranty change-out will be to a new Infinity 58CVA110-1-20 furnace. The existing furnace and central AC … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,362 satisfied customers
I have an Infinity 96 Model 58MVB with an SYSTXCCUID01--B
I have an Infinity™ 96 Model 58MVB with an SYSTXCCUID01--B Infinity Control, The instructions don't explain how to wire it to a Ruud UARL-JEZ Series AC to the thermostat.… read more
Jim Eastwood
Jim Eastwood
Lead service
High School or GED
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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