Heil Ultimate II furnace failed to light

Reply

  #1  
Old 02-23-15, 10:10 PM
Member
Thread Starter
Join Date: Nov 2014
Location: Canada
Posts: 15
Heil Ultimate II furnace failed to light

The T-stat calls for heat, Ventor motor starts, spark igniter gets pilot up for one second and the gas valve drops out before burners can light off?
 
Sponsored Links
  #2  
Old 02-24-15, 05:17 AM
Temporarily Suspended
Join Date: Jul 2008
Location: NY
Posts: 10,986
Can you give us a make, model & some info about the system? Do you have a meter to test the control board?
 
  #3  
Old 02-24-15, 09:22 AM
Member
Thread Starter
Join Date: Nov 2014
Location: Canada
Posts: 15
Heil Ultimate 2. M/N NUG5100BFB1, S/N L933338271, the board is S8600M continuos retry, IP 90 sec. Trial for ignition. The GV is VR8204M. The fan module is ST9120G, 2008, HQ 1008773HW. Originally, the tubing which connects the Ventor blower was rotten and cracked open. I had an aha moment and changed out the tubing. The furnace fired up right away and worked through two cycles. Nice. Two hours late, the son came home, shut off the power, opened the front of the furnace to see what I had done? The furnace reverted back to its original problem. Vent motor comes on, spark ignition, one second flame on and off right away? Vent motor connection is clear on the motor side. Tube is clear, jumper Ed the air proving switch, no difference. All safety switches are fine, the tube to the pilot is clear. I can hear the gas valve drop out. I have a meter and am standing by. I may not be able to get access to the board until tomorrow though. I have never tested a board before but can follow directions well. I will not have Internet access on site either. Thanks for your help, much appreciated.
 
  #4  
Old 02-24-15, 10:09 AM
Member
Join Date: Feb 2014
Location: USA
Posts: 2,104
Are you getting a flash code on the control board?
 
  #5  
Old 02-24-15, 10:46 AM
Member
Thread Starter
Join Date: Nov 2014
Location: Canada
Posts: 15
Board lights

No lights on the board. Or should I call it a pilot gas ignition control? Technically i suppose it is an enclosed board? Its an original Honeywell.
 
  #6  
Old 02-24-15, 11:15 AM
Member
Join Date: Feb 2014
Location: USA
Posts: 2,104
OK found a little info on your furnace. Looks to be a 1993 model. Make sure the pilot flame is engulfing the thermocouple.
 
  #7  
Old 02-24-15, 11:22 AM
Member
Join Date: Feb 2014
Location: USA
Posts: 2,104
Does your furnace have vent trap on the left side of the furnace?
 
  #8  
Old 02-24-15, 03:10 PM
Temporarily Suspended
Join Date: Jul 2008
Location: NY
Posts: 10,986
The next time you fix something, don't tell anyone.

https://www.youtube.com/watch?v=C1vdUZO52f0

That ^^ site may help.
 
  #9  
Old 02-24-15, 03:39 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 50,943
Likes Received: 152
Ahhhh..... yes. The Honeywell smartvalve.
 
  #10  
Old 02-25-15, 12:25 PM
Member
Thread Starter
Join Date: Nov 2014
Location: Canada
Posts: 15
Heil ignition problem

K. New title for the problem. I replaced the ignition module(S8600M) with a "one size fits all" Honeywell S8610U 3009 module. The only thing to watch out for is that the new module does not use the 24v connection. The wire from the old 24V connection has to be moved to the TH-W connection on the new module. Do not use the 24v connection on the generic module. So, read the directions and it's all good. So, I started out with a rotten hose to the air proving switch and ended up replacing the ignition module. Thanks for the ideas though. I will use them on other problems that I am sure will pop up.
 
Reply

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


Thread Tools
Search this Thread
Display Modes