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 R.G. Your Own Question

R.G.
R.G., HVAC Technician
Category: HVAC
Satisfied Customers: 319
Experience:  20 yrs. experience as HVAC technician, state certified contractor.
Type Your HVAC Question Here...
R.G. is online now
A new question is answered every 9 seconds

Hi, have a question about York Diamond 80 HVAC system

Customer Question

Hi, have a question about York Diamond 80 HVAC system
Submitted: 1 year ago.
Category: HVAC
Expert:  R.G. replied 1 year ago.

R G : Hi, I am R. G., sorry you're having trouble today, I will do my best to assist you in resolving you're issue.
R G : At this
R G : At this point you have original stat back in place?
Customer:

yes

R G : Okay and nothing will work?
Customer:

no

R G : Can you access your furnace?
Customer:

we have tried resetting the on-off switch to reset the circuit board on the HVAC unit

Customer:

yes, we can access it

R G : Okay at the control board where thermostat wires connect there should be a small 3 or 5 amp automotive type fuse
R G : Can you locate it and check to see if it is blown?
Customer:

ok we are lookin

R G : Okay I am looking for a manual Tory and before specific also
R G : To try
Customer:

we found it. it is blue. looks like there are 2 wires inside at the middle that aren't connected

R G : Is the fuse blown?
Customer:

yes

Customer:

is it possible to send you a picture

R G : Okay replacing fuse should get you back going
R G : Yes you can use paper clip icon to attach it here
Customer:

Full Size Image

R G : Yes it's definitely blown just replace it with same rated fuse, looks like a 3 amp
Customer:

is this something that can be bought at home depot, lowe's, or ace hardware?

Customer:

yes it is a 3 amp fuse

R G : It is an ordinary automotive fuse can get at wal mart or any parts store or could rob one from your vehicle
Customer:

the bigger question is why the fuse blew in the first place

R G : You must of had A wire shorted out somewhere when you had changed wiring causing fuse to blow
R G : Was unit working before with old stat?
Customer:

although our honeywell thermostat didn't have a C wire, the HVAC circuit board did. We followed the instructions for venstar add-a-wire, using a diode connection between the Y and G. on the circuit board, the Y blue wire was intertwined the a red power wire from the A/C unit. Both wires were coupled with the diode wire, and a single wire from the diode was screwed onto the Y terminal of the circuit board. this was the only time we got power during this new thermostat installation attempt. when we tried to turn on Heat, the unit briefly ran, and then blew a fuse

Customer:

yes, unit worked with old stat just fine, but our bedroom is on terminal vent, and it gets hot. so, we wanted a remote unit to control temp using ambient temp in bedroom. this is where all our problems have started, trying to follow so-called easy DIY installation.

Customer:

here is the video we followed:https://www.youtube.com/watch?v=R3pea5qtygo

R G : Okay replace fuse and make sure unit works with old stat if not let me know and we will troubleshoot further if so you can get a batteryowered stat that doesn't require the C wire or you can remove green from G at stat And furnace and connect to C then connect G to Y at furnace. Air and heat will work but Continous fan will not if wired like this
R G : Not familiar with the venstar add a wire system but I can look it up if you want to use it
Customer:

but, our wiring at the control board looked different. there was a single white wire from the AC line to the C terminal, and the red wire from that line was coupled with the blue wire at the Y terminal. there was a green G wire, a white W wire, and a red R wire.

R G : Yes that is correct wiring , you can unhook the green from G at stat and furnace and connect it to C at stat and to C at furnace with the white from a/c. Then take a small piece of wire and at furnace connect G to Y leaving the red and blue on Y also
R G : This will let heat and cool work but Continous fan will not
Customer:

yes. we tried that, but it was after the fuse was already blown, only we didn't know fuse was blown

Customer:

huge pain in the ass

Customer:

and we live in the South!

R G : Yes it can be frustrating
R G : Im in alabama
R G : Get fuse replaced and let me know if you need anything further.
Customer:

so, in your opinion, the fuse is the problem, and that new stat that requires C wire can be installed using the G to C method you described. we never use a continuous fan. it would obviated the need for extra wires.

Customer:

ok thanks

R G : Yes nothing will run with that fuse blown and method above is the easiest if your ok with not having the Continous fan option
Customer:

all we have is 10 amp fuses. can we use one of those for tonight?

R G : I wouldn't recommend that if you cross something up it will burn out transformer before it blows that fuse causing even bigger
R G : Problems
Customer:

ok

R G : Just by chance look inside furnace on side to see if there is a small envelope taped or glued to side some units have this with a spare fuse and literature on unit in it
Customer:

no such luck

Customer:

we will go to auto zone in the morning and get some new fuses

R G : Okay i will be here till the morning and back on to or row evening late. Just reply back if need any further assistance and I will answer as soon as I am available
R G : Thanks for your patience
Customer:

Ok, will let you know what happens

R G : If you rate answer now you can still come back to it for further information at no extra charge or you can wait until completed to rate
R G : Okay thanks, XXXXX XXXXX
R.G., HVAC Technician
Category: HVAC
Satisfied Customers: 319
Experience: 20 yrs. experience as HVAC technician, state certified contractor.
R.G. and 5 other HVAC Specialists are ready to help you
Expert:  R.G. replied 1 year ago.
Our chat has ended, but you can still continue to ask me questions here until you are satisfied with your answer. Come back to this page to view our conversation and any other new information.

What happens now?

If you haven’t already done so, please rate your answer above. Or, you can reply to me using the box below.
Customer: replied 1 year ago.

Replaced old fuse, wired thermostat and HVAC terminals to use G wire as common (instead of using the Venstar Add-A-Wire system), and voila, system works! Thanks for all your help.

Expert:  R.G. replied 1 year ago.
Thank you. Let me know if need anything else. Good work

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