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I have a Honeywell RTH6350 programmable thermostat. I only
I have a Honeywell RTH6350 programmable thermostat. I only have three wires. I am trying to replace this unit with a Honeywell Lyric T5 Wi-Fi thermostat. The wire colors at the the existing thermostat… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
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I currently have a Honeywell CT8602 Thermostat. I want to
I currently have a Honeywell CT8602 Thermostat. I want to upgrade to one of the smart thermostats. … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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Lyric T5 AC not working. Please help! So I installed this in
Lyric T5 AC not working. Please help! So I installed this in the winter. I have a heart pump and central ac unit. The heat worked fine. But the ac won't cool. I'm cooking in my own juices here! I can … read more
airheatman
airheatman
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How to wire transformer terminal on Wh. Rdg. 90-113 fan
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BillyHvac
BillyHvac
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Rick
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airheatman
airheatman
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Phil
Phil
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Iohn Keffer
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My a/c will not turn on but the heat does. And the old
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airheatman
airheatman
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I'm installing a Honeywell Lyric T5 Wi-Fi Thermostat.
I'm installing a Honeywell Lyric T5 Wi-Fi Thermostat. Connected the yellow to y,white to w, ground to g. Where does my blue wire go too . Does the blue wire go to c … read more
gotoman for ac
gotoman for ac
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Is available??? I have a trane baystat 240...want to changer
I have a trane baystat 240...want to changer out to a honeywell rthl3550... … read more
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Michael Ferryman
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I just installed a honeywell t5 lyric but it wont turn my
i just installed a honeywell t5 lyric but it wont turn my condensor on only the fan … read more
BillyHvac
BillyHvac
Journeyman Service Technician
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I just upgraded my old Honeywell thermostat to a Lyric T5. I
hello, I just upgraded my old Honeywell thermostat to a Lyric T5. I have power to the device yet the device is not running on the AC unit. When I switch back to my old device(thermostat). it works fin… read more
Phil
Phil
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We just installed the Honeywell Lyric T5 thermostat and now
We just installed the Honeywell Lyric T5 thermostat and now when set to cool, we are not getting AC. … read more
Brian HVAC Guy
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I just replaced the old thermostat with a new Honeywell
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airheatman
airheatman
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My hvac controller (old mastertrol) has t4 green, t5 red, t6
My hvac controller (old mastertrol) has t4 green, t5 red, t6 yellow. I have a white wire on M2. My honeywell thermostat rth2300 Has B O G Y W R Rc with a jumper R to RC. My controller transformers for… read more
Rick Mather
Rick Mather
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Hi, Have a Trane T8411R 1077 non programmable thermostat.
Hi, Have a Trane T8411R 1077 non programmable thermostat. Want to replace with a Honeywell TH4210D1005 programmable Thermostat. Current wiring to the old Trane Thermostat has: G - Green Wire B - Blue … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
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Hi. Trying to replace a Honeywell TrolATemp T87F with Q539A1436
Hi. Trying to replace a Honeywell TrolATemp T87F with Q539A1436 wiring base. I purchased and installed the Honeywell RTH7600D but I'm not sure if it's working the way it should. I have a single stage … read more
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,791 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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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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