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 10-30-2011, 10:17 AM   #1
Newbie
 
Join Date: Oct 2011
Posts: 1
Share |
Default

furnace- no start up


i have a gibson furnace about 5 years old. have had lots of trouble with it. this time we have no heat again i checked the leds and found red light is on constant. looked at code and it says false flame or gas valve shorted. i turned off power and waited 5 minutes it did nothing and red light stays on constant.i pulled wire from flame roll out switch and it will turn on all fans but no ignition cleaned flame sensor and still no luck. also checked drain lines and presure switch. what should i try next im a diesel mechanic.

1rhino89 is offline   Reply With Quote
Old 10-30-2011, 12:11 PM   #2
Member
 
biggles's Avatar
 
Join Date: Jan 2008
Location: Long Island
Posts: 3,601
Default

furnace- no start up


had it been running for heat and it crapped out? things to check 24Vs off the Main Transformer 24Vs at the control board within,filters ..can you swittch to FAN/ON at the stat if you have cooling also...just want to see that supply fan run from the stat!if it was running the gas valve might of shorted...get a meter shut power and with the OHMS setting remove the wires off the gas valve check for continuity on the coil for the valve....if it shows resistance cool..reconnect restart and see if you see 24V go to that valve.do you have a Induced Draft motor mounted on the burner section that pressurizes the burner chamber? if you do that should run first when the stat calls...then that 4'round disc with the orange tube going into it should close telling the gas section air is being supplied into the burner....spark...pilot...then main gas burner....any reset buttons for the draft or roll out there....that resistance reading on the gas valve coil...if it is showing open like your holding the leads in each hand...the coil within it is shot....as this 1.0

biggles 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
Oil Furnace burner wont start marcomjl HVAC 13 01-26-2011 10:10 AM
Furnace won't fire, exhaust fan hot and won't start tex800 HVAC 14 10-08-2010 06:48 PM
Oil Furnace Won't start ScottEW HVAC 0 10-05-2010 08:26 AM
HEIL gas furnace will not start. Mikeee HVAC 8 01-14-2009 09:25 PM
Heil furnace won't start - just a click and a hum MrGookat HVAC 4 01-06-2009 07:53 PM




Top of Page | View New Posts

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