Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-02-2013, 01:57 PM   #1
Newbie
 
Join Date: Jul 2013
Posts: 3
Rewards Points: 10
Question

Lennox H522-261U-2P Central Air unit


Hello, my name is Mark. I have an older Lennox H522-261U-2P Central Air unit. It stopped cooling the other day. I found the blower fan in the compressor unit was gummed up. I took it apart and cleaned it. The fan is working now. However, when I turn down the thermostat to where the compressor and fan should turn on they do not. There is a solenoid in the compressor unit that is controlled by a timing circuit board, which fires the fan and compressor. The solenoid does not close when I turn the thermostat down. I can manually engage the solenoid and the system runs, and will cool as normal. I suspect the timing circuit board is the problem. Has anyone experienced this. Am I on the right track here. Let me know

mandvinmpls is offline   Reply With Quote
Old 07-02-2013, 02:09 PM   #2
Newbie
 
Join Date: Jul 2013
Posts: 3
Rewards Points: 10
Question

Lennox H522-261U-2P Central Air unit


Hello, my name is Mark. I have an older Lennox H522-261U-2P Central Air unit. It stopped cooling the other day. I found the blower fan in the compressor unit was gummed up. I took it apart and cleaned it. The fan is working now. However, when I turn down the thermostat to where the compressor and fan should turn on they do not. There is a solenoid in the compressor unit that is controlled by a timing circuit board, which fires the fan and compressor. The solenoid does not close when I turn the thermostat down. I can manually engage the solenoid and the system runs, and will cool as normal. I suspect the timing circuit board is the problem. Has anyone experienced this. Am I on the right track here. Let me know

mandvinmpls is offline   Reply With Quote
Old 07-02-2013, 02:51 PM   #3
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 1,000
Default

Lennox H522-261U-2P Central Air unit


Try pushing the red button on the high pressure switch.
Marty S. is offline   Reply With Quote
Old 07-02-2013, 03:20 PM   #4
Newbie
 
Join Date: Jul 2013
Posts: 3
Rewards Points: 10
Default

Lennox H522-261U-2P Central Air unit


Thank you. Excuse my ignorance but is that in the heat pump unit. I didn't see anything like that in the compressor unit
mandvinmpls is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Trane Central Air Unit hellawear9 HVAC 0 06-10-2011 11:50 AM
Lennox A/C unit not starting netddd HVAC 8 08-16-2010 11:30 PM
central air unit question princessme HVAC 4 07-08-2006 09:13 PM
Removing Refridgerant from Central Unit wackerjr HVAC 1 06-23-2006 02:09 AM
Need to remove old central air unit pmb003 HVAC 4 05-03-2006 04:05 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.