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 Wvfan79 Your Own Question

Wvfan79
Wvfan79, Designer, Estimator & Technician
Category: HVAC
Satisfied Customers: 1141
Experience:  NC/VA Master HVAC & Gas, Air Balance, LG Master Commissioner
Type Your HVAC Question Here...
Wvfan79 is online now
A new question is answered every 9 seconds

new goodman central air. compressor wont turn on...

Resolved Question:

new goodman central air. compressor won't turn on...
Submitted: 1 year ago.
Category: HVAC
Expert:  Wvfan79 replied 1 year ago.

Wvfan79 :

Hello there! I'm Norman but you can call me Norm. I just logged in and saw your question was still open. Did you still need assistance?

Customer: Yes,
Wvfan79 :

OK, tell me what type of system is this? Packaged unit or split and is it a heat pump or a straight A/C system?

Customer:

Goodman for a townhome... outside straign a/c

Wvfan79 :

OK, when you set the thermostat to cool with the temp down, does the indoor blower run?

Customer:

yes

Wvfan79 :

Does anything on the outdoor unit run?

Customer:

no

Wvfan79 :

With the thermostat set to cool and the temp down, do you hear a humming or buzzing at the outdoor unit in the controls cabinet?

Customer:

no

Wvfan79 :

Do you have tools and a mutlimeter? Are you familiar with how to use it if so?

Customer:

I have tools... but no meter

Customer:

I can buy one at homedepot and could use it

Wvfan79 :

Ok, let's do this first...pull the controls cover off the outdoor unit to expose the wiring.

Wvfan79 :

Its the panel above where the copper lines enter on the back corner of the unit.

Wvfan79 :

Should be 3-5 screws holding it on.

Customer:

OK...

Customer:

is it the bottom panel or the one above it

Wvfan79 :

Once you get it off look for the contactor...

Full Size Image

Wvfan79 :

The one above it.

Customer:

OK

Customer:

its off

Wvfan79 :

On the contactor there is a plastic tab in the middle where this picture says "pulls in with 24 volts"

Wvfan79 :

Use the screwdriver to press in on the plastic tab and hold. The unit should start.

Wvfan79 :

Don't touch any metal

Wvfan79 :

It may already be all the way in. If so let me know.

Customer:

ok one sec

Wvfan79 :

10-4

Customer:

it was already in

Wvfan79 :

Ok. Do you see the capacitor?

Full Size Image

Customer:

yes

Wvfan79 :

Inspect it and make sure the top of it isn't bulging like this.

Full Size Image

Wvfan79 :

It should be flat

Wvfan79 :

Don't touch the terminals

Customer:

nope looks good

Wvfan79 :

Also look for any fluid leaking from the top of it.

Wvfan79 :

down the sides

Customer:

ok... hold on

Customer:

nope looks brand new

Wvfan79 :

Did you check the breakers at the electrical panel?

Customer:

They were good

Wvfan79 :

you swiched them off then back on?

Wvfan79 :

switched, sorry

Customer:

yes

Customer:

last night

Wvfan79 :

OK, please give me the model number off of the unit tag

Customer:

the 24 volt input looks like a red looped wire... is that right

Wvfan79 :

If this is a straight A/C you should have two wires coming in from the house, one is a common and the other is a 24 volt hot wire, any two colors can be used.

Wvfan79 :

Has anyone messed with the wiring or serviced the unit lately giving you reason to believe something may be crossed up?

Customer:

nope...

Customer:

It goes into a small box on the side of the house.

Wvfan79 :

Is that the high voltage line in?

Wvfan79 :

Or a separate wire?

Wvfan79 :

You may have what the electric company calls a cycle and save box

Customer:

gsx130241ba

Customer:

2 black and a green going from the wall box to the compressor in a half inch cable

Wvfan79 :

That's the high voltage

Customer:

OK.. good to know

Wvfan79 :

They come in and two connect to the contactor

Wvfan79 :

green goes to metal ground block

Customer:

I don't see the thing you asked me to push on the contactor

Customer:

It was another small box above it

Wvfan79 :

Can you post a picture of the controls cabinet?

Wvfan79 :

Using the paperclip icon below

Customer:

OK... give me a minute...

Wvfan79 :

ok

Wvfan79 :

Full Size Image
Part #71 is the contactor

Customer:

Full Size Image

Customer:

I think this it...

Wvfan79 :

Yes you just have a sealed contactor

Wvfan79 :

No button to push.

Customer:

OK

Customer:

There is another box above it..

Customer:

smaller

Wvfan79 :

Do you have a picture of that?

Wvfan79 :

Its probably the start assist

Customer:

I was afraid you were going to ask that.... hold on.

Customer:

Full Size Image

Customer:

Here it is.

Wvfan79 :

Thats a time delay

Customer:

OK

Wvfan79 :

That's so that the system doesn't cut off and on too many times within a certain time limit.

Customer:

ok.. thanks

Wvfan79 :

But that's a delay on Break so thats odd

Wvfan79 :

I would like you to have someone go to the thermostat and bump the temp down, Then switch it Off for about 30 seconds then back to cool while you sit there and listen for the contactor to pull in. You should hear it engage.

Customer:

the box on the wall also has a plastic piece that pulls out it say off and on... Right now On is on top.

Wvfan79 :

Thats a non-fused pull out disconnect

Wvfan79 :

For the line voltage in from electrical panel.

Wvfan79 :

Easy way to kill power for servicing.

Customer:

OK

Customer:

like a tagout lockout?

Wvfan79 :

I would like you to have someone go to the thermostat and bump the temp down, Then switch it Off for about 30 seconds then back to cool while you sit there and listen for the contactor to pull in. You should hear it engage.

Customer:

Its just me..

Wvfan79 :

Lockout tag-out is a term used when you've disconnected power for servicing and you lock the disconnect or breaker and tag it with a warning label.

Customer:

OK

Wvfan79 :

So someone doesn't come behind you and switch it on, killing you

Customer:

good idea

Wvfan79 :

Ok at this point we need a multimeter.

Customer:

ok

Customer:

need to pick one up at the hardware store

Wvfan79 :

Ok, do that then log back on. Have you used one before?

Customer:

Nope... but we use them a lot at work so I have watched them use it

Wvfan79 :

CLICK HERE to watch a couple of these videos, a good instructional video will help

Customer:

Great... I will go get one and then log back in later today.

Customer:

Thanks for your help so far... this is a great service.

Wvfan79 :

I will be online until about 11 tonight. Easter Standard Time

Wvfan79 :

I'm very glad you are happy so far!

Customer:

OK....later.

Wvfan79 :

Just log back in, go to My Questions at the top, then click on this question. Make sure you are back in this thread then type me a response. I will jump back in as soon as I can.

Customer:

back..with multimeter

Wvfan79 :

Ok good deal

Wvfan79 :

Did you watch a couple videos?

Customer:

yes

Wvfan79 :

Ok, get it set up to read in Volts AC

Wvfan79 :

if you have multiple settings we will be reading around 240v so set on 300 if you have that choice.

Customer:

ok

Wvfan79 :

Go back to that contactor and read from one black to the other on the two of 3 that are coming in.

Customer:

ok

Customer:

240

Wvfan79 :

They should be labeled L1 and L2

Wvfan79 :

Ok go across the contactor and read T1 to T2

Wvfan79 :

opposite two terminals

Wvfan79 :

Should have 3 black wires on one and a red on the other.

Wvfan79 :

well 2 reds

Customer:

nothing

Wvfan79 :

Ok so the contactor is not pulled in

Wvfan79 :

Read the two smaller wires on the sides of the contactor that just plug in

Customer:

105c blue

Wvfan79 :

excuse me?

Customer:

hold on

Customer:

nothing

Wvfan79 :

There is a yellow wire plugged into one side, the go opposite side and there should be another wire.

Customer:

ok

Wvfan79 :

Is that what you read?

Customer:

nothing

Wvfan79 :

Ok. Lets move indoors

Wvfan79 :

Do to the indoor furnace and give me the model number to start

Wvfan79 :

go to the, sorry typo

Customer:

ok

Customer:

ok at the furnace

Customer:

2 panels

Wvfan79 :

Need that model number, should be on the side or behind the top service door on a sticker.

Wvfan79 :

That is if the furnace is an upflow

Wvfan79 :

You still have the thermostat set to cool with the temp down... right?

Customer:

cnpvp3017acaabaa

Customer:

yes

Wvfan79 :

The blower was running when you got there?

Customer:

yes

Wvfan79 :

Ok, give me a minute to locate the wiring schematic

Wvfan79 :

Ok, you gave me the coil model number, I need the furnace model number

Customer:

ok

Wvfan79 :

You have a carrier coil matched up with a Goodman outdoor unit.

Customer:

0310x18915

Wvfan79 :

That's not it either

Wvfan79 :

Look inside the controls cabinet where the gas valve is at and the burners, on the middle divider or the inside cover should be a sticker

Wvfan79 :

and will say model # XXXXX Serial #

Customer:

ok

Customer:

366224

Wvfan79 :

thats not it either.

Wvfan79 :

Lets see what we can do without it.

Wvfan79 :

Take both doors off, near the blower you should see a control board, do you see it?

Customer:

gks907038xae

Wvfan79 :

There we go

Customer:

that was easy

Wvfan79 :

Ok, top left corner of the control board you will see 5 terminals - C,G,R,W,Y

Wvfan79 :

Switch your meter if needed to read around the 24 volts AC range

Wvfan79 :

Test from Common to Y with the furnace door switch held in.

Customer:

ok

Wvfan79 :

Also, look at the flashes of the light on the board and count them if they are flashing a code.

Customer:

shocked

Wvfan79 :

huh?

Customer:

got a sc

Customer:

got a shock

Wvfan79 :

That's no good, how?

Customer:

when i pushed the door switch

Wvfan79 :

You got shocked from touching the door switch only? Did you bump something?

Customer:

maybe

Wvfan79 :

Keep your fingers away from anything on or around the board, just use the probes. If the door switch itself shocked you may have an equipment ground issue.

Wvfan79 :

It should be plastic

Customer:

just touching c y with meter

Wvfan79 :

That shouldn't happen

Wvfan79 :

You have the meter set to read in volts AC

Wvfan79 :

?

Customer:

yep 50

Wvfan79 :

Are you ok?

Customer:

yep

Wvfan79 :

Place the black probe on a unit chassis screw or a ground block and the red probe on the Y terminal for me.

Wvfan79 :

Press the door switch in again. Be careful not to bump anything with your knuckles

Customer:

ok

Customer:

clicked and red light on but no reading ac set at 10

Wvfan79 :

what do you mean by ac set at 10?

Customer:

i have options from 10 to 300

Customer:

acv

Wvfan79 :

Set it higher we will be reading 24 volts

Customer:

ok

Wvfan79 :

you need to have it higher than our reading

Wvfan79 :

Try C to Y again but be careful not to bump anything and only touch the probe handles.

Customer:

yep no reading, just click

Wvfan79 :

Test C to G for me

Customer:

nothing

Wvfan79 :

Go C to W for me

Customer:

fan doesnt go back on either

Wvfan79 :

When you got shocked you probably blew the fuse

Customer:

ok,

Wvfan79 :

Its right below these terminals, plugged into the board

Customer:

i can change it

Wvfan79 :

Pull it out and hold it up to the light

Wvfan79 :

Make sure you use the same size

Customer:

ok done

Wvfan79 :

Sweet\

Wvfan79 :

Ok, start over

Wvfan79 :

Go C to Y with the door switch in

Wvfan79 :

May want to make sure the thermostat is still set to cool with the temp down.

Wvfan79 :

May have reset on fuse blowing.

Wvfan79 :

You'll know if the blower starts

Customer:

nothing just a click and red light

Wvfan79 :

No blower either

Customer:

nope

Wvfan79 :

Go switch the thermostat fan switch to ON

Customer:

ok

Wvfan79 :

Then go back and press door switch back in and hold it for a minute

Wvfan79 :

The blower should start

Wvfan79 :

Blower may have a delay

Customer:

thermostat... not working and won't reset

Customer:

digital

Wvfan79 :

Battery powered?

Customer:

I don't think so....

Customer:

but let me check

Customer:

I think it didn't like that shock

Wvfan79 :

I don't think so either

Wvfan79 :

But the good news may be that the thermostat might have been the whole problem all along.

Customer:

OK

Customer:

So get a new one?

Wvfan79 :

Not yet

Customer:

its got lines across the screen

Wvfan79 :

Does your thermostat come off the wall to expose the wiring?

Customer:

yes

Wvfan79 :

Ok put the furnace doors back on and go to the thermostat. Grab a paper clip and unfold each end. so you can hold it in your hand and use it as a jumper.

Customer:

ok,,, one minutee\

Wvfan79 :

When you get it, put one end of the paper clip on the R terminal and the other end on the G terminal and hold it there. Be careful not to touch anything else except for these two terminals. DO NOT bump the circuit board if there is one close by. The blower fan should start.

Customer:

ok... furnace fan did start and thermostat back to normal... didn't need the paper clip

Customer:

but compressor still off

Wvfan79 :

Does the face of your thermostat just come off or the entire thermostat?

Customer:

the whole thing... but wires an connections on the bottom

Wvfan79 :

ON a sub-base, separate from the thermosat?

Customer:

just under the screen

Wvfan79 :

So wires are all still connected and you can see the terminals with the thermostat on.

Customer:

yes

Wvfan79 :

Ok with thermostat set to cool - auto- and with the temp down. Measure voltage from C to R terminal for me as a test.

Wvfan79 :

should be around 24 volts

Customer:

ok

Customer:

it did

Customer:

c to y no reading

Wvfan79 :

Ok, C to G

Customer:

24

Wvfan79 :

And you have the temp down and on cool?

Customer:

yes

Wvfan79 :

Ok use the paper clip to jump from R terminal to the Y terminal and hold it there for a few. I bet the outdoor unit starts.

Wvfan79 :

R to Y

Customer:

ok hold on it did

Wvfan79 :

It started?

Customer:

yep

Wvfan79 :

Ok, bad thermosat

Wvfan79 :

Thermostat

Customer:

ok.. i'll get a new one

Wvfan79 :

It should send voltage from R to Y and G when set to cool with temp down

Customer:

ok

Wvfan79 :

Only getting voltage to G terminal

Customer:

ok

Customer:

On my way to home depot...

Wvfan79 :

Well, there ya go, you just diagnosed your air conditioning system!

Customer:

Excellent

Customer:

wow

Customer:

that was awesome

Customer:

and only one shock

Wvfan79 :

Get a 1 heat / 1 cool thermostat. If you don't already have one, get a programmable, you won't regret it.

Customer:

Thanks

Customer:

I will

Wvfan79 :

You are very welcome

Customer:

Have a great weekend... Eliot

Wvfan79 :

If you get a digital make sure you go through installer setup and configure the unit correctly before thinking you have something wrong.

Wvfan79 :

And be sure to cut power to the system before changing it.

Customer:

OK

Wvfan79 :

If i can ever help with another question after you press accept please visit my page using this link - http://www.justanswer.com/home-improvement/expert-its-norm/. I would love to help anytime and I work hard until you accept my answers with 100% satisfaction. Also, I love positive feedback.

Wvfan79, Designer, Estimator & Technician
Category: HVAC
Satisfied Customers: 1141
Experience: NC/VA Master HVAC & Gas, Air Balance, LG Master Commissioner
Wvfan79 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'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
< 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