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I have a Trane comfortlink II system throwing a 91.03 error
Hello, I have a Trane comfortlink II system throwing a 91.03 error code. Any ideas what I should do? I've switched off power at the breaker a couple of times and that does not solve the problem. Thank… read more
Phil
Phil
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Degree, Mech Engr Technology
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My trane comfortlink II system has an error message "err 79"
My trane comfortlink II system has an error message "err 79" flashing and a red light on. What is the problem? What do I do? I found the below post from 2010. I shut the breakers to the unit and turne… read more
airheatman
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Bill
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We are getting an error message 126 on our Trane Comfortlink
Second opinion] We are getting an error message 126 on our Trane Comfortlink II. There is also a red light that looks like a snowflake. What steps do I need to take to correct? … read more
Daniel Plourde
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TRANE CONTROLLER ON COMFORT LINK II HAS A RED LIGHT ON UPPER
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airheatman
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I have a Trane comfortLink II thermostat. The power went out
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BillyHvac
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My trane thermostat shows an err 163, what does it mean.
My trane thermostat shows an err 163, what does it mean. … read more
Phil
Phil
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My Trane comfortlink II thermostat is giving me an err 91
My Trane comfortlink II thermostat is giving me an err 91 message and the ac is not working. I live out in the country in Texas and it is over 100 degrees today. Anything I can do to get the AC workin… read more
Phil
Phil
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Degree, Mech Engr Technology
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A red light with an err message on my comfort link II, I
a red light with an err message on my comfort link II … read more
HvacmanSean
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My trane comfortlink ii had an 'err 79" notice, so I cut off
my trane comfortlink ii had an 'err 79" notice, so I cut off the power and now my fan won't circulate air....I can hear the outside unit turn on but no blower any advice… read more
BillyHvac
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I have a Trane ComfortLink II thermostat. I just came back
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gotoman for ac
gotoman for ac
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I have a Trane 19 seer condenser with a variable speed blower.
I have a Trane 19 seer condenser with a variable speed blower. My thermostat is a Comfortlink 2 model TCONT800. Due to the warmer weather here in Texas today, I had to turn on the AC. When I did this,… read more
Tim H.
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I have a Trane ComfortLink II thermostst. The Red warning light
I have a Trane ComfortLink II thermostst. The Red warning light is on and the screen is flashing what appears to be a code 80. What should I look for?… read more
Richard
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I have a Trane Comfort Link II thermostat flashing Err 79.
I have a Trane Comfort Link II thermostat flashing "Err 79." My system is not cooling, but the fan is fine. On the top right hand corner of the thermostat the x is lit with a solid red light.… read more
Phil
Phil
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i installed my first trane xl20i with a 4tee3c4a1000aa air
i installed my first trane xl20i with a 4tee3c4a1000aa air handler and a comfortlink ii control and the unit wouldnt fire up tstat read err 91 never a clear answer in the err adendum to help explain t… read more
Richard
Richard
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Vocational, Technical or Trade Scho
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had a power outage and now my thermostat has a steady red light
had a power outage and now my thermostat has a steady red light on it and says error 79.... what do i do?… read more
Kenton Guidry
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I had a power outage, now, on my thermostat there is a constant
I had a power outage, now, on my thermostat there is a constant red light and a err 79 message keeps popping up, needless to say, we now have no air conditioning.... The T-stat is a Tcont900 unit. ple… read more
Mark Henley
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Getting error code 91 on acculink thermostat (same as trane
Getting error code 91 on acculink thermostat (same as trane comfortlink II). Heritage 20 compressor and 4TEE air handler. Fault LED is flashing three times and the comm LED is flashing fast. User Inte… read more
BillyHvac
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Meet the Experts:

Phil

Phil

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8,117 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

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Tom

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A-1 Tech

A-1 Tech

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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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