A/C wont turn on

Reply

  #1  
Old 07-31-06, 03:30 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
A/C wont turn on

have an outdoor unit. when i turn it on at the thermostat, the blower comes on inside but the outside unit does nothing. Checked outside, the unit is getting power and the contactor depresses, but the fan/condenser will not turn on.

any suggestions, i am thinking electric component failure.
 
Sponsored Links
  #2  
Old 07-31-06, 03:52 PM
Member
Join Date: Jun 2006
Posts: 68
Received 0 Votes on 0 Posts
Try to get a stick and move fan in the direction it usually spins. See if this jump starts it. Perhaps the bearings are shot and its stuck.
 
  #3  
Old 07-31-06, 04:06 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
nope

tried turning it with a stick; didnt work. thanks for the suggestion.
 
  #4  
Old 07-31-06, 04:22 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
background:

it worked fine all of last summer. had it wrapped in garbage bags over the winter. hasnt worked at all this summer.

living in southern ontario
 
  #5  
Old 07-31-06, 04:43 PM
Member
Join Date: May 2006
Posts: 253
Received 0 Votes on 0 Posts
Are you sure you have the proper voltage at the line side of the contactor? What about across the contactor?

Could be a bad run capacitor if it is a combination used for the fan and compressor.
 
  #6  
Old 07-31-06, 04:53 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
thanks, Cov Tiger, ill check the voltages again.

And YES. the capacitor is used for both the compressor and the fan. is there any way I can test to see if it is okay.
 
  #7  
Old 07-31-06, 04:57 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
i also think the voltages should be fine since the contactor goes in when the tstat is switched on, and pops back out when off. Back i guess i should check anyway
 
  #8  
Old 07-31-06, 05:06 PM
Member
Join Date: May 2006
Posts: 253
Received 0 Votes on 0 Posts
Contactor is being pulled in by the low voltage (24V). You should have 208/230V feeding into the unit contactor and going through the contactor. 90% of the calls we get with your symptoms turn out to be fuse or tripped breaker. Check them first.

You can do a limited check on capacitor with an ohm meter. If you do have proper voltage through the contactor, unless you are unlucky enough to have lost a fan and compressor at same time, it will probably be the capacitor.
 
  #9  
Old 07-31-06, 05:35 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
ill do that

i checked the breaker, i dont know if my unit has a fuse
 
  #10  
Old 07-31-06, 05:51 PM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
ive got a multimeter, how cxan i check the capacitor??
 
  #11  
Old 08-01-06, 11:13 AM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
im getting the 24volt signal, but it looks like i am not getting the ~220 across the contactor when its depressed, if this is at all possible.

the run capacitor looks fine, no swelling, no leaking.
 
  #12  
Old 08-01-06, 11:22 AM
mattison's Avatar
Member
Join Date: Mar 2003
Location: Cinti, OH
Posts: 5,549
Received 0 Votes on 0 Posts
When it was winterized, did someone remove the fuses from the outdoor disconnect or shut off the indoor breaker ?
 
  #13  
Old 08-01-06, 11:48 AM
Member
Thread Starter
Join Date: Jul 2006
Location: non-US
Posts: 64
Received 0 Votes on 0 Posts
no i dont think so, and i checked all breakers and they seem to be okay. therew are two larger 3" fuses in a fuse box under the breaker panel, and although one is burnt, they seem to be for the downstairs stove. so i dont think its a fuse or breaker problem.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: