HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

My LG ducted-type AC (model ABUW426KSA0) suddenly stopped providing…

Customer Question
My LG ducted-type AC (model...
My LG ducted-type AC (model ABUW426KSA0) suddenly stopped providing heating. Whe I switch unit ON, the AC's fans run fine, control unit say 'pre heat'. About a minute later, control unit shows 'outdoors' below 'pre heat', then 'pre heat' message turns off and units starts blowing cold air through the house. Is there a fuse that might need replacement?

Thanks
Submitted: 8 years ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 14 minutes by:
6/26/2010
HVAC Technician: Phil, Mechanical Engineer replied 8 years ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 9,794
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified
Chat Conversation Started
Phil :

Hello, the unit is trying to tell you that its too warm outside to run the unit in heating model.. what was the outside temperature when you got that error messsage? If it was above 68 to 72F the unit was telling you it was too warm outside for the unit to operate in heating mode properly. If it was cooler than that outside the units outside air sensor is on the fritz if you are lucky, or the main control card is defective... that will cost more than a new unit to replace.

Phil :

It it were mine I would pull the panels off, unplug it, and then un plug and replug all of the electronic gang connectors inside... and look in the owners manual for an 'outside air sensor' and go the dealer and ask for a replacement ($20 or so).. you should be able to do that yourself.

Phil :

Do some or all of these things and get back to me. we will go from there.

Phil :

Hello again. I got notice that you responded but no text arrived..

Ask Your Own HVAC Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a hvac technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Phil Your Own Question
Phil
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 9,794
9,794 Satisfied Customers
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial

Phil is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Phil

Phil

Mechanical Engineer

9,794 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

< Previous | Next >

Related HVAC Questions
I have Nest and they said that my controllers are not able
I have Nest and they said that my controllers are not able to send a signal to the AC unit and that is why it is not cooling. I have checked the 3 amp fuse and it is not blown. The outside fan turns o… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a Rheem RCBA-4882G that stopped blowing warm air -
Hi - I have a Rheem RCBA-4882G that stopped blowing warm air - just cool air. … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have a Carrier Furnace/Air conditioning unit (gas) which
I have a Carrier Furnace/Air conditioning unit (gas) which was installed new 6 years ago. The 3 amp fuse in front keeps blowing when I try to turn on AC. Any idea why?… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Moved in to house today, thermostat set at 72, working fine
Moved in to house today, thermostat set at 72, working fine until lunchtime, all doors were open for movers so house heated up. Didn't touch thermostat. AC failed after lunchtime, fans working, no col… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have a lg la180hsv4. I have been using it to heat and
I have a lg la180hsv4. I have been using it to heat and works great. Now when i turn it on it goes into the pre heat mode but never starts blowing heat. I also had a communcation error code come up at… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
My AC is blowing air but it is not cold. The AC company will
My AC is blowing air but it is not cold. The AC company will only send a technician tomorrow and its unbearable in the house. Checked the water trap, it's dry, and changed the console batteries. Is th… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
I have a RBHK-24J14SHF vertical unit and the heat was blowing
I have a RBHK-24J14SHF vertical unit and the heat was blowing and heating fine yesterday but today only blowing luke warm air so not heating properly. System ran all night on heat set at 72 and never … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have a Bryant 310AAV036110AAJA furnace/air conditioner and
I have a Bryant 310AAV036110AAJA furnace/air conditioner and last night the AC suddenly stopped working. My thermostat is set to cool and the blower on the furnace inside the house kicks on but room t… read more
Tim H
Tim H
Lead building engineer
Vocational, Technical or Trade Scho
1,922 satisfied customers
Hi, I have a Robertshaw thermostate. The heating system works
Hi, I have a Robertshaw thermostate. The heating system works fine. However, the AC system is not functioning as it should. The furnace goes on but the vents do not blow cold air. The temp will go no … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Hi i have a goodman 13 seer gas elec 2.5 ton which was installed
Hi i have a goodman 13 seer gas elec 2.5 ton which was installed 4 weeks ago it ran fine up until today is blowing warm to cool air like just the fan, no cold air! im electronically incline so is the … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Last winter I had a question regarding an old Day & Night,
Last winter I had a question regarding an old Day & Night, Model : 394GAD048100 heating / AC unit which Douglas from Just Answer walked me through and I eventually put in a new control board because o… read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,010 satisfied customers
Two years ago I purchased a 5 ton York Affinity 2 stage compressor/variable
Two years ago I purchased a 5 ton York Affinity 2 stage compressor/variable speed blower Heat pump and AC unit. Heat strips were also installed to defrost the coils in cold weather. Since then I have … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
2 compressos are running. one for upstairs one for downstairs.
2 compressos are running. one for upstairs one for downstairs. the fan is on. Only the downstairs is blowing cool air. Upstairs is blowing warm. what is wrong with upstairs ac? I found some paperwork.… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
I have a Payne PH10JA036-E Heat Pump, PF1MNA Fan Coil, and
I have a Payne PH10JA036-E Heat Pump, PF1MNA Fan Coil, and Bryant TSATBBPHP01-B Programmable Thermostat. Found house cool, no power to thermostat. Found 5 amp fuse on control board in fan coil blown. … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
I have central AC and oil heat. I am getting cold air through
I have central AC and oil heat. I am getting cold air through the vents and that is all but I have the electric thermoset on heat and cannot turn off the cold air. Any suggestions? I had turned the em… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
Hi. Got a small problem with my heat at home, and Im hoping
Hi. Got a small problem with my heat at home, and I'm hoping somebody can give me a hand. My thermostat is a Trane XR401, connected up to a Trane outdoor unit, and both were new and professionally ins… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
I have a Goodman CK24-1B AC Unit. Turn on the AC, fan and
I have a Goodman CK24-1B AC Unit. Turn on the AC, fan and unit fire up, start to blow cool air. After about 10 minutes, air continues to blow, however, fan stops and I hear the power to the unit still… read more
Kenton Guidry
Kenton Guidry
HVAC Technician
Vocational, Technical or Trade Scho
963 satisfied customers
Hi Folks, I hope you can help me out. My Lennox model number
Hi Folks, I hope you can help me out. My Lennox model number 10ACC-036-230-02 system is not delivering any cool air. The unit appear to run fine from outward appearances (i.e. the fan is running and t… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,209 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x