American Standard Furnace Blower Second Stage Goes Off During Heat Call,6 LED Flashes - HVAC - DIY Chatroom Home Improvement Forum


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

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

Reply
 
Thread Tools Display Modes
Old 03-20-2013, 11:51 AM   #1
Newbie
 
Join Date: Mar 2013
Posts: 3
Rewards Points: 10
Default

American Standard furnace blower second stage goes off during heat call,6 LED flashes


American Standard Freedom 90 gas with electromate coil with a warm flo controller
Initial problem was blower would not come on at all so I put in a new ECM and the blower seemed to work as it should but now it seems after a heat call is on for an extended period of time the fast blower stage will shut off and the blower will just run slowly even though the heat call is still on. The electric coil is still on even with the slow blower. In this state the red LED flashes 6 times which is "115 volt AC power reversed, poor grounding or system voltage too low." If I cycle AC to the unit it will run as it should with the fast blower on a heat call for as long as I have waited (about 15 minutes). Any ideas?

Advertisement

tnixa is offline   Reply With Quote
Old 03-20-2013, 05:28 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,457
Rewards Points: 4,560
Default

American Standard furnace blower second stage goes off during heat call,6 LED flashes


Any electrical work done in the house recently, say the last six weeks or so?

Advertisement

beenthere is offline   Reply With Quote
Old 03-20-2013, 05:51 PM   #3
Newbie
 
Join Date: Mar 2013
Posts: 3
Rewards Points: 10
Default

American Standard furnace blower second stage goes off during heat call,6 LED flashes


I recently replaced the main switch on the furnace which feeds the transformers for the furnace and the humidifier and the zone controller and all the zone actuators. I guess I could recheck that wiring but I don't understand how that could be the problem if flipping this switch off and then back on fixes my problem.
tnixa is offline   Reply With Quote
Old 03-20-2013, 06:04 PM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,457
Rewards Points: 4,560
Default

American Standard furnace blower second stage goes off during heat call,6 LED flashes


Loose wire in the box the switch is in. May have bumped the ground wire that it isn't making contact like it should all the time after the furnace runs for a while(mild vibration can cause this).
beenthere is offline   Reply With Quote
Old 03-22-2013, 10:30 AM   #5
Newbie
 
Join Date: Mar 2013
Posts: 3
Rewards Points: 10
Default

American Standard furnace blower second stage goes off during heat call,6 LED flashes


Well its been running fine since the last AC cycle a few days ago and I haven't touched anything. I find it hard to believe the problem is a loose wire. Something tells me this is not going to be a fun one to debug if the problem happens again.
tnixa is offline   Reply With Quote
Reply


Thread Tools
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
VisionPRO Setup Functions & Heat Pump infoskr HVAC 42 11-16-2014 06:30 PM
gas furnace efficiency, hybrid heat pump, and payback times av-geek HVAC 1 06-22-2012 08:46 AM
3 - flash code, american standard freedom 90 furnace dfferg HVAC 25 03-05-2012 12:21 AM
American standard heat pump question. SS laser HVAC 5 01-04-2012 10:35 PM
Ruud heat strip furnace blower TKELLY HVAC 4 03-08-2010 03:09 PM




Top of Page | View New Posts