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 A-1 Tech Your Own Question

A-1 Tech
A-1 Tech, Service Manager
Category: HVAC
Satisfied Customers: 492
Experience:  I have been in the HVAC business for over 39 years.
Type Your HVAC Question Here...
A-1 Tech is online now
A new question is answered every 9 seconds

my carrier air conditioner (heat pump) will not run.i put it

Customer Question

my carrier air conditioner (heat pump) will not run.i put it on but compressor outside just clicks
Submitted: 10 months ago.
Category: HVAC
Expert:  Steve G. replied 10 months ago.
Hello there and welcome to Just Answer. My name is XXXXX XXXXX I will be assisting you today. I am an engineer with over 30 years of electrical and electronic training, repair and installation experience. I will try and answer your question accurately and precisely so that we can get you on your way.

You most likely need to change out the starting capacitor. If you look in your heat pump's junction box you will see a large silver 'can'. It may be bulging. On the side of it will be the rating of the capacitor in Farads and Volts for example 40uF 440V AC.

Go to your local HVAC supply house and you should be able to buy one for under $20.

Kill power to the unit - there should be a disconnect switch or fuse in a box close by. Replace the capacitor and you should be good to go. Let me know if that doesn't work. I'll be here.

If you are uneasy about doing this, a local HVAC tech should be able to do this for you for $75-$100 parts and labor.

I'll be here if you need further help with this issue. Please let me know.

Regards
Steve
Customer: replied 10 months ago.


so the capacitor will be in the conpressor box outside or the one in the attic.i just had a problem with my air compressor in the garage it was the starting capacitor.also there is a box of small glass fuses on the unit in the attic,i am a new owner of the place

Expert:  Steve G. replied 10 months ago.
The capacitor is on the actual condensing unit outside. There will be a small box that houses a circuit board, contactor and the capacitor.

I'll be here if you're still stuck.

Steve
Customer: replied 10 months ago.

Ok I will get back to you tomorrow when I change it thanks

Expert:  Steve G. replied 10 months ago.
Sounds good.

Don't forget to kill power to the unit.

Steve
Customer: replied 10 months ago.


OK PUT IN STARTER CAPACITOR.DOES NOTHING PUSH BUTTON SIDE OF UNIT TO RUN IT FOR 2 MINUTES.BUT THE LINES GOT NOT HOT HIGH SIDE OR COLD LOW SIDE.LOOKS LIKE A LEAK FREON LOW.BUT IT HAS 427-A FREON RETRO FIT ,AN I AM GUESSING A LEAK BECAUSE IT IS LOW

Expert:  Steve G. replied 10 months ago.

What push button is this? The push button on the contactor?

Please let me know so that we can continue.

Regards
Steve

Customer: replied 10 months ago.


the push button next to the capacitor .there is 427-a in there an it is low can we put in 410-a in its place.will it match up it seems to have a leak in the sharder valve,having trouble finding 427-a

Expert:  Steve G. replied 10 months ago.

Ok, I'm not quite following your dialog. I am going to opt out of this question which will allow other experts to chime in.

Hold on.

Expert:  A-1 Tech replied 10 months ago.

Hello, my name is XXXXX XXXXX I will assist you today

Expert:  A-1 Tech replied 10 months ago.
R 427A is a drop in replacement for R-22. You can"t replace it with R 410A

You will need to either add R-427A to system or remove all the R427A and go back with a different drop in replacement or put R-22 back in the unit.
Customer: replied 10 months ago.


do i need to flush out the system or just drain out the 427 oil anthen put in 410.or should i just try to get 427-a

Expert:  A-1 Tech replied 10 months ago.
You can NOT convert this unit to R-410A.
You can simply remove the R-427A and put any other drop in replacement or go back to R-22. There are many drop in replacements that do nor require you do anything with the oil.
Customer: replied 10 months ago.

great which one can i get beside 427-a is there another one i can use that i can find easier

Expert:  A-1 Tech replied 10 months ago.
Please allow me a few minutes and I will get you some replacements.
Customer: replied 10 months ago.


thank you

Expert:  A-1 Tech replied 10 months ago.
ISCEON® MO99™ refrigerant
The Quick Switch for R-22 Replacement
Customer: replied 10 months ago.


ok i will look for that stuff asn get right back to you.thank you

Expert:  A-1 Tech replied 10 months ago.
Thank you, XXXXX XXXXX is by Dupont and should be available.
Customer: replied 10 months ago.

i found 427-a ,i am picking it up now i don,t need any special gauges for thos gas do i my ac guy is worried about that

Expert:  A-1 Tech replied 10 months ago.
No, no special gauges are needed. A pressure temperature chart from supplier would be helpful as pressures will be a little different from R-22.
Expert:  A-1 Tech replied 10 months ago.
A positive rating is greatly appreciated if you are satisfied with my service. I will be available for follow up if needed.

Thank you,

Ron
Customer: replied 10 months ago.

ok oner last question i put in 417-a got pressure at 75 low side 200 high but it come out at 68 degrees from the vents should it be lower,an what can i do to make it more efficient

Expert:  A-1 Tech replied 10 months ago.

The air out the vents should be 17-20 degrees lower than the room temperature, or the air temperature entering the filter.

 

Are you using R-417 or R-427?

 

Customer: replied 10 months ago.


427-a the house temp is 84 the vent temp 68

Expert:  A-1 Tech replied 10 months ago.
Then you are really close on the charge, you have a 16 deg. drop
You may need to add just a little more refrigerant. Is the suction line sweating any?
Do you know the suction line temperature?
Customer: replied 10 months ago.

it is cool but not sweating i will add a little more 427a

Customer: replied 10 months ago.


it is not sweating just cold but with air on the temp is climbing during the day when i got there at 12 it was 79 inside then it climbed to 82 by 5 with the ac running


 

Expert:  A-1 Tech replied 10 months ago.

Did you try adding refrigerant? What is the low side pressure and the suction line temperature? I will be out for a while, possibly we can continue this in the morning.

 

Customer: replied 10 months ago.


the low side is 75 the high side is 200.my problem now to me seems to be when it comes oput of the ducts it is only 69 degrees,back home in new jersey my air comes out of the ducts at 59 degrees during the day an 56 in the evening.the best i get here in savannah is 69.even in the evening

Expert:  A-1 Tech replied 10 months ago.
If we get the 17-20 degrees difference as stated above, we are good. Higher efficiency units tend to have a lower temperature drop. 18-19 deg is optimal.

What is the temperature drop after the house cooled down?
What are your pressures now running? High side and low side?
What is the suction line temperature?
Do you know what type metering device you have? Expansion valve or piston?
Please verify to me the refrigerant we are using. R-427A?
We really need to know these things and we can proceed.
Customer: replied 10 months ago.


i will check the temp drop at difference time of the day,an the pressures at different time of the day,an i will look up what kind of metering device ,it is 427-a i put in .i do not no how to check the suction line temp.so you need to no what my system is unit in attic is 18 years old unit outside is 3.i will get back to you tonight


 

Expert:  A-1 Tech replied 10 months ago.
Thank you, XXXXX XXXXX sorry for all this trouble, but we really need to know these things to get it right. If you can put a thermometer under the insulation outside and then tape it down to the copper line would be great for getting that temperature.

Depending on metering device, we will be either checking sub cooling or super heat. I can explain later.

Thank you,

Ron
Customer: replied 10 months ago.


ok i will get a thermometer an check the temp,also i think it has a real slow leak

Expert:  A-1 Tech replied 10 months ago.
Thank you
Customer: replied 10 months ago.


well i put more freon in it come out of the vents around 59 degrees but the low pressuere is 90

Expert:  A-1 Tech replied 10 months ago.
We need to be sure the compressor isn't flooding back. Is the suction line sweating? What is the suction line temperature?
What did the discharge pressure do?
Customer: replied 10 months ago.


okay i will rate you today i open up the evaporator an it was loaded up with alot of debri an dirt.so what is the best way to clean the fins .the suction line is sweating. i cleaned the evaporsator a little the temp is coming out of duct at 59 degrees,so hopefully when i clean it ,it will get even better. an i got low side 80 hi side 210

Expert:  A-1 Tech replied 10 months ago.

You can brush the face of the coil to get the heavy stuff built up. Then you can purchase pressurized cans of evaporator coil cleaner to help with the dirt build up inside the coil. You should be able to shine a light through the coil and see the light on the opposite side. Sometimes you can't get one clean in place and the coil has to be removed, taken outside and flushed out good with water hose. Be sure to tape up refrigerant lines if you remove the coil to keep water out of the coil.

Once the coil is cleaned, the refrigerant pressures will actually rise. You may need to adjust refrigerant accordingly. This will also help with the suction line temperature being too cold.

A-1 Tech, Service Manager
Category: HVAC
Satisfied Customers: 492
Experience: I have been in the HVAC business for over 39 years.
A-1 Tech and other HVAC Specialists are ready to help you
Expert:  A-1 Tech replied 10 months ago.

Thank you for the positive rating. The link above shows a cleaner you can use and should be able to get locally. If I can assist you further, please let me know.

 

Thanks again, Ron

 

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