Compressor and condensing fan wont turn on...

Closed Thread

Old 08-16-07, 07:20 AM
Thread Starter
Join Date: Aug 2007
Posts: 1
Received 0 Votes on 0 Posts
Compressor and condensing fan wont turn on...

I have power at my compressor contacts and power to the fan but neither are coming on...contacter is pulled in...line voltage seems appropriate...
Where should I go from here....
Sponsored Links
Old 08-16-07, 07:52 AM
Join Date: Oct 2005
Location: USA
Posts: 1,076
Received 0 Votes on 0 Posts
Check your capacitor.
Old 06-21-13, 06:36 PM
Join Date: Jun 2013
Posts: 2
Received 0 Votes on 0 Posts
Compressor and fan wont run

Name:  3I93Md3J95Ic5Eb5Jbd2300b2544e77d013f4.jpg
Views: 364
Size:  15.0 KBName:  15dun9w.jpg
Views: 805
Size:  26.0 KB

You need to read the voltage across the T-1 and T-2 side of the contactor and see if you have 2 hot legs of 110 volts or there abouts.

The capacitors that a COM, HERM and FAN terminal are 2 capacitors with COM being where they are joined, COM to HERM is 1 and COM to FAN is the other, it is less common to see both bad, but is happens, I suspect a bug under contactors contacts.
Old 06-21-13, 09:22 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 58,655
Received 1,051 Votes on 975 Posts
Sherlock Ohms..... pretty cool

Celtic.....welcome to the forums.

Usually if you have a capacitor issue.....when the contactor engages you would hear the compressor and the condensor fan growling or humming pretty loud.

You need to check for 240vac into the contactor and 240vac out of the contactor when it is activated by a call for AC. I left you a descriptive diagram below.

Measure're working with 240 VAC and a short or accidental contact can be hazardous.

Name:  contactor check.jpg
Views: 756
Size:  21.8 KB
Old 06-21-13, 10:47 PM
hvactechfw's Avatar
Join Date: Jan 2011
Posts: 6,245
Received 2 Votes on 2 Posts
Pete and Sherlock

This thread is from 2007!!!!
Closed Thread
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
Ask a Question
Question Title:
Your question will be posted in: