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 01-03-2010, 10:50 AM   #16
Newbie
 
Join Date: Jan 2010
Posts: 2
Rewards Points: 0
Share |
Default

Ruud Furnace intermittent problem


It seems like everyone here is convinced it's got to be the flame sensing circuit, could it be something else? For example, could it be going into lockout due to the limit control tripping repeatedly (dirty filter?). Or any of a number of other things?

hatrabbit is offline   Reply With Quote
Old 01-03-2010, 10:54 AM   #17
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,415
Rewards Points: 24
Default

Ruud Furnace intermittent problem


YES. He needs to sit with and run the unit with the lower cover off and tape the door switch closed and monitor the LEDS to see if it is tripping on the pressure switch etc. Cycle it on/off a couple dozen times and the problem usually shows up. Patience is a virtue in our biz.
yuri is offline   Reply With Quote
Old 01-03-2010, 11:58 AM   #18
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Quote:
Originally Posted by yuri View Post
YES. He needs to sit with and run the unit with the lower cover off and tape the door switch closed and monitor the LEDS to see if it is tripping on the pressure switch etc. Cycle it on/off a couple dozen times and the problem usually shows up. Patience is a virtue in our biz.
I have taken the door switch out along with the power switch...i have watched the LED's and have cleaned the AC coils along with the exhaust vent...now the exhaust vent was pretty dirty...but i am still having the problem...when the unit flames up i get two solid green lights and a blinking yellow...when the unit locks out or doesn't turn on i have one solid green and a blinking green until i reset the power to the unit.
dbh is offline   Reply With Quote
Old 01-03-2010, 12:08 PM   #19
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Is there a chart in the furnace or on the doors showing what that light set means?
Not positive but I think there should be a metal cover over the black box holding the circuit board. I think the codes are listed on the inside of that missing metal cover

Last edited by Marty S.; 01-03-2010 at 12:20 PM.
Marty S. is offline   Reply With Quote
Old 01-03-2010, 12:20 PM   #20
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Quote:
Originally Posted by Marty S. View Post
Is there a chart in the furnace or on the doors showing what that light set means?
Not that I can find...schematics is anot it.
dbh is offline   Reply With Quote
Old 01-03-2010, 12:23 PM   #21
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Model number should be on that label over where the gas pipe comes in. We can probably find the codes with a model number.
Marty S. is offline   Reply With Quote
Old 01-03-2010, 12:56 PM   #22
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,415
Rewards Points: 24
Default

Ruud Furnace intermittent problem


The yellow LED indicates low flame current when it flashes. The codes are usually in fine print on the electrical schematic or the instructions that came with the new board. That unit has a history of pressure switch tripping problems. Sit there with your multitester on the switch and see if you get 24 volts across which indicates it has tripped. Cycle it 2 dozen times. Check the port on the inducer fan where the switch hose attaches for blockage, clean it with a small bit or paper clip.

Last edited by yuri; 01-03-2010 at 01:19 PM.
yuri is offline   Reply With Quote
Old 01-03-2010, 01:50 PM   #23
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Model number is ugdg 10 eamer
dbh is offline   Reply With Quote
Old 01-03-2010, 02:05 PM   #24
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


I Get 28 volts across the pressure switch when the unit is cycled off..two green solid LED`s ...unit turns on voltage at switch goes to 7mv then to 24mv...still getting the blinking yellow LED.
dbh is offline   Reply With Quote
Old 01-03-2010, 02:10 PM   #25
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Can not find the paper work that came with the mother board for error coding. i still have the box the control board came in and it is part number 62-24084-82 Protech

Last edited by dbh; 01-03-2010 at 02:19 PM.
dbh is offline   Reply With Quote
Old 01-03-2010, 02:37 PM   #26
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,415
Rewards Points: 24
Default

Ruud Furnace intermittent problem


Did you clean the flame sensor with some fine emory paper/steel wool and the face of the burner it sits in front of? If not do so. There needs to be proper grounding from that circuit board to the chassis of the furnace. Some of those boards had a ground screw or wire and that may be loose/missing?
yuri is offline   Reply With Quote
Old 01-03-2010, 03:44 PM   #27
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Quote:
Originally Posted by yuri View Post
Did you clean the flame sensor with some fine emory paper/steel wool and the face of the burner it sits in front of? If not do so. There needs to be proper grounding from that circuit board to the chassis of the furnace. Some of those boards had a ground screw or wire and that may be loose/missing?
After pulling the burners out and cleaning them and the flame sensor and everything else i could see i get a solid yellow when unit is operating....so hopefully that was it...thank you all for your help...here's to a warm house.
dbh is offline   Reply With Quote
Old 01-03-2010, 07:48 PM   #28
Member
 
Join Date: May 2009
Location: Brooklyn, New York (NYC)
Posts: 1,124
Rewards Points: 0
Thumbs up

Ruud Furnace intermittent problem


Quote:
Originally Posted by Marty S. View Post
Is there a chart in the furnace or on the doors showing what that light set means?
Not positive but I think there should be a metal cover over the black box holding the circuit board. I think the codes are listed on the inside of that missing metal cover
...Or, you can go online or call the manufacturer with the model # and they will send you all the relevant information. (No matter what) Don't Drink and Drive, ever!!!
spark plug is offline   Reply With Quote
Old 01-03-2010, 07:51 PM   #29
Member
 
Join Date: May 2009
Location: Brooklyn, New York (NYC)
Posts: 1,124
Rewards Points: 0
Cool

Ruud Furnace intermittent problem


Quote:
Originally Posted by dbh View Post
Model number is ugdg 10 eamer
that model # sounds like it came from outer Mongolia or some other place in the now defunct, former USSR!!

Last edited by spark plug; 01-03-2010 at 07:52 PM. Reason: Missing (e) letter!
spark plug is offline   Reply With Quote
Old 01-04-2010, 07:52 AM   #30
dbh
Newbie
 
Join Date: Dec 2009
Posts: 18
Rewards Points: 0
Default

Ruud Furnace intermittent problem


Quote:
Originally Posted by spark plug View Post
that model # sounds like it came from outer Mongolia or some other place in the now defunct, former USSR!!
That would explain a lot SP...24hrs and no lock outs...

dbh 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
Old Silver-Line furnace problem avro1 HVAC 9 03-18-2010 12:01 AM
Problems with new furnace..Overheating, having to reset. Furnace too big? Tommy2 HVAC 41 12-01-2008 01:55 PM
Carrier Furnace Problem Boats1183 HVAC 1 11-11-2008 06:41 PM
another question for a miller furnace problem jb9270 HVAC 1 02-05-2007 02:04 PM




Top of Page | View New Posts

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