Go Back  DoItYourself.com Community Forums > Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls > Air Conditioning and Cooling Systems
Reload this Page >

Circuit board question on a trane 5 ton A/C (heatpump) condensing unit 2TWZ9060A

Circuit board question on a trane 5 ton A/C (heatpump) condensing unit 2TWZ9060A


  #1  
Old 01-05-11, 07:06 AM
trane's Avatar
Member
Thread Starter
Join Date: Dec 2004
Location: FL. USA
Posts: 124
Upvotes: 0
Received 0 Upvotes on 0 Posts
Circuit board question on a trane 5 ton A/C (heatpump) condensing unit 2TWZ9060A

In the condensing unit under access panel there is a circuit board with a couple of relays, LED lights, etc. At the lower right corner of the board there is a red wire that can slide on one of 4 pins starting from the top down Normal, tst, and 2 others. I had the service guy here yesterday and he said it was on the "tst" pin and should have been on the "normal" pin which is where he put it. Anyone have any idea what the purpose of this red wire is and what pin it belongs on?
 

Last edited by trane; 01-05-11 at 07:07 AM. Reason: install proper spacing
  #2  
Old 01-05-11, 05:51 PM
hvactechfw's Avatar
Member
Join Date: Jan 2011
Posts: 5,491
Upvotes: 0
Received 4 Upvotes on 4 Posts
it belongs on normal. it's to test the defrost function of the control board
 
  #3  
Old 01-05-11, 06:44 PM
trane's Avatar
Member
Thread Starter
Join Date: Dec 2004
Location: FL. USA
Posts: 124
Upvotes: 0
Received 0 Upvotes on 0 Posts
Originally Posted by hvactechfw
it belongs on normal. it's to test the defrost function of the control board
Thank you very much for your help, maybe now it will work somewhat better?
 
  #4  
Old 01-06-11, 01:07 AM
trane's Avatar
Member
Thread Starter
Join Date: Dec 2004
Location: FL. USA
Posts: 124
Upvotes: 0
Received 0 Upvotes on 0 Posts
I wonder how this has affected it's performance?

Originally Posted by hvactechfw
it belongs on normal. it's to test the defrost function of the control board


Originally Posted by trane
Thank you very much for your help, maybe now it will work somewhat better?
As far as I can tell this lead has been on the test pin since it was installed 5 1/2 years ago, I wonder how this has affected this units performance?
 
 

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