Intermittent Gas Furnace Problems - HVAC - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 01-16-2006, 12:43 PM   #1
Join Date: Jan 2006
Location: bellevue
Posts: 2
Rewards Points: 10

Intermittent gas furnace problems

I have an older Tempstar furnace that has developed intermittent failures since late december. The thermostat tells the furnace to start (heat on), the furnace starts up, but sometimes one of three things happen:
1. The pilot fails to ignite the flame
2. The pilot lights the flame, but only a small flame on one of the three burners stay lit.
3. All three burners light, but then go out within a couple of minutes.

This "failure" has occurred three times, but after 5-12 hours the furnace starts up fine and provides heat for the next few days.

I've had it looked at and of course it was working at the time so I didn't get any answers except the suggestion to replace it because it is old.

I realize that replacement is probably inevitable but I would prefer to do this in the spring as I would like to make some repairs in the utility closet.

Any suggestions for DIY maintenance or specific tasks for a professional would be appreciated.


dcoz is offline   Reply With Quote
Old 01-16-2006, 09:22 PM   #2
Join Date: Sep 2005
Posts: 57
Rewards Points: 75

If this furnace has a standing pilot ,I would suggest cleaning them. sometimes over time the pilot orifice gets partially restricted and makes the pilot smaller and usually creates orange feathering on it. This smaller pilot can easily loose contact with the thermocouple and cause intermirrent shut-downs.


oddjob 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
oil furnace problems crossthreaded HVAC 9 03-26-2007 01:27 PM
Furnace Problems? MCSE HVAC 10 12-20-2006 11:06 AM
Goodman furnace problems GMT045-3A wcoent HVAC 7 12-18-2006 10:30 PM
Furnace power up problems Capaz HVAC 6 12-06-2006 12:26 PM
Furnace Problems? Part 2 MCSE HVAC 9 11-30-2006 09:25 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1