How JustAnswer Works:

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

Ask Billy Your Own Question

Billy
Billy, HVAC Technician
Category: HVAC
Satisfied Customers: 19824
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
12672042
Type Your HVAC Question Here...
Billy is online now
A new question is answered every 9 seconds

LUX 1500 thermostat has every option lit up on panel. Air conditioning

Resolved Question:

LUX 1500 thermostat has every option lit up on panel. Air conditioning will not come on. Fan will. Cannot get the panel to respond otherwise. Breaker not flipped, new batteries.

any idea?
Submitted: 3 years ago.
Category: HVAC
Expert:  Billy replied 3 years ago.

Hello,

I would like to eliminate something first if you dont mind a hands on test..?

Customer: replied 3 years ago.

sure

 

Expert:  Billy replied 3 years ago.
Remove top section from wall.

Underneath you will see thermostat wire terminals. They are labeled R,G,Y,W...we want to take a paper clip and shape it in a U..touch one end to R and the other to G thus connecting them...tell me if blower starts in furnace.

Billy
Customer: replied 3 years ago.

not wanting to start the furnace. i can run the fan/blower for the airconditioner, but the outside unit will not respond.

still want to run this same test? Should i then have the panel set up for heat and blower?

 

Customer: replied 3 years ago.

my terminals are labeled

 

RC O B RH W Y G

 

 

Expert:  Billy replied 3 years ago.
The R and G will not start the heat...it only starts the blower IN the furnace.

So you are saying the indoor blower turns on but not the outdoor section?

Customer: replied 3 years ago.

yes

 

and the panel to set the temp has every option lit up.

Expert:  Billy replied 3 years ago.

Ok, sorry to drag this out...when you say every option lit up I picture every icon available lit whether being used or not.

Is this the case or does the thermostat appear normal with the proper icons lit?

Customer: replied 3 years ago.
yes, every option lit up whether being used or not
Expert:  Billy replied 3 years ago.
Thank you...lets do the same test but with R and Y...

tell me if outdoor ac unit turns on.

Customer: replied 3 years ago.

stand by

 

Expert:  Billy replied 3 years ago.

Will do...

Customer: replied 3 years ago.

RH or RC and Y

 

 

 

 

Expert:  Billy replied 3 years ago.

Rh and Rc are joined so either, but use Rc..and Y
Customer: replied 3 years ago.

yes, blower started

 

that good?

Expert:  Billy replied 3 years ago.

To be exact the "outdoor blower" started?

Customer: replied 3 years ago.
yes, outdoor unit turns on.
Expert:  Billy replied 3 years ago.

Now we know the system is ok but the thermostat is acting up.

Put the batteries in backwards for 15 seconds..then install correctly and tell me fault remains.

Customer: replied 3 years ago.

yes

 

fault remains

Expert:  Billy replied 3 years ago.

Then thermostat is defective.

Do you wish to have cooling until you can replace?

Customer: replied 3 years ago.

yes

 

i think the home depot down the street is open until 10.

 

paper clip in place until then?

 

or Not...

Expert:  Billy replied 3 years ago.

You can take the R, G and Y wires and twist them together.

The R = 24v
The G = indoor blower
The Y = outdoor ac unit

then if it were heat you wanted it would be R and W as W is heat terminal.

I wish you luck!

Billy
Billy, HVAC Technician
Category: HVAC
Satisfied Customers: 19824
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Billy and 5 other HVAC Specialists are ready to help you

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. Jimmy Bagley, IA
< Last | Next >
  • 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. Jimmy Bagley, 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, 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. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • gotoman for ac

    HVAC Technician

    Satisfied Customers:

    4657
    51 years of experience install design and repair of all makes and models of AC
< Last | Next >
  • http://ww2.justanswer.com/uploads/SE/ServiceTechRus/2012-6-7_2119_056.64x64.JPG gotoman for ac's Avatar

    gotoman for ac

    HVAC Technician

    Satisfied Customers:

    4657
    51 years of experience install design and repair of all makes and models of AC
  • http://ww2.justanswer.com/uploads/AL/alumalite/2012-5-10_234018_shutterstock506249951forJA500.64x64.jpg Phil's Avatar

    Phil

    Mechanical Engineer

    Satisfied Customers:

    3888
    Retired HVAC/ Electrical & Boiler contractor. Industrial
  • http://ww2.justanswer.com/uploads/skibum0101/2008-12-16_015819_just_answer.jpg Rick Mather's Avatar

    Rick Mather

    HVAC Technician

    Satisfied Customers:

    3132
    35 years experience, HVAC
  • http://ww2.justanswer.com/uploads/RY/Rygis20/2011-5-7_3143_DSC5324.64x64.JPG Matthew's Avatar

    Matthew

    HVAC Technician

    Satisfied Customers:

    1994
    14 years experience in the HVAC field of service, installation, Manual J & D calculations
  • http://ww2.justanswer.com/uploads/KE/kentguidry/2011-9-26_214316_0059.64x64.jpg Kenton Guidry's Avatar

    Kenton Guidry

    HVAC Technician

    Satisfied Customers:

    962
    12 years install/service experience.
  • http://ww2.justanswer.com/uploads/solarman1947/2009-12-13_223915_phpkKBcXq_c2PM.jpg Rick Ridley's Avatar

    Rick Ridley

    UK Heating Engineer

    Satisfied Customers:

    871
    Retired But have had 30 years on the tools, Ex CORGI
  • http://ww2.justanswer.com/uploads/Ironheadfan/2009-12-18_222416_pump_005.jpg Tom's Avatar

    Tom

    HVAC Technician

    Satisfied Customers:

    770
    16+yrs HVAC/R service. Residential Commerical Industrial