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 09-20-2008, 10:27 AM   #1
Member
 
Join Date: Aug 2007
Posts: 91
Share |
Default

A/C won't turn off


Last Sunday we had a windstorm here in central Ohio, with winds as high as 75-mph (remnants of Hurricane Ike.) Hundreds of thousands lost power. When our power went off, we had our air conditioning on. When the power came back on on Wednesday, our air conditioning came back on as well. As it was now cool, I turned it off at the thermostat. The A/C unit outside (a Trane) kept going. I noticed, however, that there was no air coming through the vents. I went outside and saw that the line from the unit into the house was all iced up. This was actually several hours after the power came back on. The only way I could get the A/C to shut off was to pull out a fuse that was in a metal box next to the A/C unit.
So, I'm wondering first why no air was coming in the vents. Could there be a problem with the blower in my furnace? It's a Lenox Pulse furnace, about 25 years old. I am also wondering why the A/C unit won't turn off?
Thanks in advance for any assistance.

bucksone is offline   Reply With Quote
Old 09-20-2008, 02:32 PM   #2
Member
 
Join Date: Jul 2007
Location: Jacksonville, FL
Posts: 886
Default

A/C won't turn off


Good news , bad news.
The repair may be covered by your HO insurance ( less deductible)

Bad news: check to be sure hurricane deductibles are not being applied.

sounds like surge (on /off) may have fried something. Look for reset buttons and anything else you are comfortable checking.

Big Bob is offline   Reply With Quote
Old 09-20-2008, 03:34 PM   #3
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 13,845
Default

A/C won't turn off


Because the Air Handler was not running, and the Coil did not know if the house was at temp yet because the Air Handler stopped working. With the unit being 25 years old, time to replace with a more up to date & Energy Efficient unit.
gregzoll is online now   Reply With Quote
Old 09-21-2008, 12:23 AM   #4
Tired & Dirty
 
Join Date: Mar 2007
Location: East Central Illinois
Posts: 80
Default

A/C won't turn off


Prob the contactor arced on , from power surge or age. uausually not a big problem to repair.
evapman is offline   Reply With Quote
Old 09-22-2008, 07:38 AM   #5
Newbie
 
Join Date: Sep 2008
Posts: 2
Default

A/C won't turn off


If blower motor is off, unit will ice up due to lack of airflow. Condenser (outside unit) contactor probably welded its contacts which is why it won't stop. Let unit thaw, then turn on blower fan only, to check motor. If O.K. check contactor outside. Leave fuse out so there's no power. Contactor should be free. You should be able to push contacts in and have them open when you remove your finger. If they don't push in, they are welded & contactor needs replacing.
Atlas 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
Comfortmaker furnace won't turn on steelframe8459 HVAC 36 11-30-2011 03:22 PM
Furnace w Cooling unit wont turn off Klatimer HVAC 2 09-19-2008 08:35 PM
hot water knob wont turn all the way cloud Plumbing 4 06-27-2008 08:19 PM
Help Please, Furnace won't turn on lh0628 HVAC 8 10-09-2007 03:07 PM
Faucet won't turn off etiger Plumbing 1 08-31-2005 02:46 AM




Top of Page | View New Posts

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