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 04-11-2009, 07:52 PM   #31
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,507
Rewards Points: 2,694
Default

First time furnace repair. Any advice?


Probably a polarity problem.

Check your wiring, and your grounds.

beenthere is online now   Reply With Quote
Old 04-11-2009, 07:56 PM   #32
HVAC / Plumbing
 
Join Date: Feb 2009
Posts: 1,801
Rewards Points: 1,000
Default

First time furnace repair. Any advice?


It doesn't sound like ps.. You can jump it out just for testing.. Where did you get the board ?? operation is controlled by the board
kenmac is offline   Reply With Quote
Old 04-11-2009, 08:53 PM   #33
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


Polarity shouldn't be an issue. I plugged in everything the same way as it was before.

kenmac >Can you be more specific about "jumping out"?
klas is offline   Reply With Quote
Old 04-11-2009, 08:58 PM   #34
HVAC / Plumbing
 
Join Date: Feb 2009
Posts: 1,801
Rewards Points: 1,000
Default

First time furnace repair. Any advice?


The ps switch will have 2 wires attached. connect them together.. WARNING.... This is a safety & shouldn' t be left jumped out.. Only for testing
kenmac is offline   Reply With Quote
Old 04-11-2009, 09:03 PM   #35
HVAC / Plumbing
 
Join Date: Feb 2009
Posts: 1,801
Rewards Points: 1,000
Default

First time furnace repair. Any advice?


Quote:
Originally Posted by klas View Post
I checked the code with 5 blinks... "Flame sensed when no flame should be present" Maybe that will give some ideas?


Only idea this gives me is the board / sensor says there is a flame there when no flame should be
kenmac is offline   Reply With Quote
Old 04-12-2009, 07:22 AM   #36
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,507
Rewards Points: 2,694
Default

First time furnace repair. Any advice?


Quote:
Originally Posted by klas View Post
Polarity shouldn't be an issue. I plugged in everything the same way as it was before.
Sometimes new boards are a bit more sensitive then the ol board.

And a resistive ground connection will cause it.
beenthere is online now   Reply With Quote
Old 04-13-2009, 10:04 PM   #37
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


well, put a new pressure switch just to test it out and that did not resolve the issue. I even took the front fan apart just to check it out. I am really pulling my hair on this.

Last edited by klas; 04-21-2009 at 09:06 PM.
klas is offline   Reply With Quote
Old 04-13-2009, 10:13 PM   #38
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


wow, i just noticed 6 blinks. it's not 5 as I initially thought. 6 blinks related to polarity issue. Can someone tell me how do I troubleshoot this issue?
klas is offline   Reply With Quote
Old 04-13-2009, 10:18 PM   #39
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,507
Rewards Points: 2,694
Default

First time furnace repair. Any advice?


I could swear I said a polarity problem earlier.

Recheck your electrical connections.
Recheck your ground connections.

Has any electrical work been done in the house recetly before your furnace stopped working.
beenthere is online now   Reply With Quote
Old 04-13-2009, 10:25 PM   #40
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


well it's odd. on a video it showed 6 blinks, but i just checked again and it actually blinked 5 times. Nevermind, false alarm about the blinks...

btw, you gave me an idea about connections... technician was unplugging things and plugging them around. Could it be that he plugged in something to the wrong place? Can you tell from the picture if connections are correct?

Last edited by klas; 04-13-2009 at 10:34 PM.
klas is offline   Reply With Quote
Old 04-13-2009, 10:36 PM   #41
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


Unfortunately, I did not take a picture prior to technician

Last edited by klas; 04-21-2009 at 09:06 PM.
klas is offline   Reply With Quote
Old 04-13-2009, 10:47 PM   #42
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,507
Rewards Points: 2,694
Default

First time furnace repair. Any advice?


Its acting like a dirty flame sensor, or the pressure switch opening during the burner run time.

A poor ground can cause problems with flame sensing.
A loaded ground can cause a false flame sense problem.
Check for voltage between neutral and ground.

Got some rust in it also. Time to check the heat exchanger for cracks and holes.
beenthere is online now   Reply With Quote
Old 04-13-2009, 10:57 PM   #43
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


I might try replacing flame sensor as well.

Last edited by klas; 04-13-2009 at 11:16 PM.
klas is offline   Reply With Quote
Old 04-13-2009, 11:20 PM   #44
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Rewards Points: 2,000
Default

First time furnace repair. Any advice?


Try checking if the pressure tap off the inducer is plugged. Could be causing the press switch to fluctuate.
__________________
Just slow, not stupid.
hvaclover is offline   Reply With Quote
Old 04-14-2009, 12:20 AM   #45
Member
 
Join Date: Apr 2009
Posts: 30
Rewards Points: 25
Default

First time furnace repair. Any advice?


don't see any pressure tap

klas 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
Help troubleshooting furnace problem robert_ HVAC 21 02-15-2012 08:04 AM
first time startup on Bryant furnace - furnace calls for heat and will not stop luvheat HVAC 22 02-14-2009 08:56 AM
Oil furnace does not fire up sbhavinm HVAC 5 01-17-2009 07:06 AM
Need New furnace advice. Unregistered HVAC 3 10-23-2006 09:13 PM
Furnace repair Bullwiiklesdad HVAC 3 10-19-2006 01:11 PM




Top of Page | View New Posts

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