Furnace Trouble - Appliances - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 01-14-2011, 01:14 PM   #1
Join Date: Jan 2011
Posts: 1
Rewards Points: 10

Furnace trouble

We have an HEIL DC90 Ultra High Efficiency furnace. It randomly starts blowing out cool air instead of warm air. We live where it snows so this is a big problem. We have tried turning it off and unplugging. Sometimes it works and sometimes it doesn't. It will be working fine and then all of the sudden blowing out cold air. Do you know what could be wrong and what we could try to fix ourselves before paying a professional?


Scrapbooker is offline   Reply With Quote
Old 01-15-2011, 09:19 AM   #2
Join Date: Sep 2010
Posts: 581
Rewards Points: 508

Try cleaning sensor by one of the burners with emery cloth, fine steel wool or sandpaper.

If no success, start a new post in HVAC section.

Tell what point you are at:

1. Combustion fan on
2. Pressure hose jumps, air pressure switch closes
3. Ignitor glows
4. Gas valve opens, burners light
5. Blower motor starts


diyorpay is offline   Reply With Quote
Old 02-08-2011, 12:42 AM   #3
Join Date: Feb 2011
Posts: 1
Rewards Points: 10

Lately while cleaning the basement, the drain hose located on the right side of the furnace was lifted about furnace height. This kept the furnace running and putting out little heat. When I lowered the hose back to the floor a small amount of water ran out. When the hose was drained the furnace works like it's supposed to. This makes me believe a lot of problems arise from the hose being plugged up, water does not run uphill and clogged the hose. I believe this may cause the furnace to malfunction. Hope this helps
Jerry S 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
furnace trouble jkwilson HVAC 17 11-01-2009 10:23 AM
Help! with Concord 80+ gas furnace + T-STAT joryeln HVAC 0 09-16-2009 12:23 PM
Oil furnace / tank questions... pure_energy1 HVAC 26 06-22-2009 08:47 PM
Problem with Trane gas furnace quovadis HVAC 17 12-22-2008 01:12 PM
Olsen BFL 120 Furnace DaleB HVAC 12 12-19-2008 10:42 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1