Need Help With OLD Central Furnace - HVAC - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 01-11-2010, 04:05 PM   #1
Join Date: Jan 2010
Location: South Texas
Posts: 4
Rewards Points: 10

Need help with OLD Central Furnace

I am woking on an old Ruud furnace (UGDA-075C-ER) and am having quite the time with it. At the start, the blower would not come on at all; auto or on mode. In addition, the pilot (standing pilot)would light, and have a good flame, but not stay lit. One side note to the pilot, if it had been off for a while (days) it would light and stay lit for about a minute after the gas valve was turned to on. Still nothing would happen wih the rest of the system, and then after a minute or so there would be an audible "click" and the pilot would go out, not to stay lit again. After some checking with the meter, the limit switch was good, transformer bad (no 24v). Being as old as it is, my local HVAC supply hooked me up with a transformer that would work and I then wired in accordingly. Not suprisingly, the blower works fine as would be expected. The head scratcher for me now is, when lighting the pilot light it is no longer a good flame but rather a puny little flicker of a flame. I did not touch anything on the gas valve so I don't know what happened. In addition, the adjustment screw for the pilot has no effect. Anyone have any ideas?


scarpen01 is offline   Reply With Quote
Old 01-11-2010, 07:35 PM   #2
retired elect/hvac/plumb
plummen's Avatar
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,921
Rewards Points: 2,020

gas valve


plummen is offline   Reply With Quote

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
are central air units compatible with any furnace? firsttimeowner HVAC 3 08-10-2009 08:15 AM
Problems with new furnace..Overheating, having to reset. Furnace too big? Tommy2 HVAC 41 12-01-2008 01:55 PM
New Cased Coil - Install to Furnace - PICTURES!! hartkem HVAC 39 11-18-2008 01:45 AM
Central Air Installation vs. Oil Furnace shnfldr HVAC 6 06-20-2008 06:49 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1