Furnace Won't Light - Please Help

Reply

  #1  
Old 10-16-13, 08:09 AM
Member
Thread Starter
Join Date: Jun 2013
Location: USA
Posts: 4
Furnace Won't Light - Please Help

We are entering our first Michigan winter in a home we purchased last spring. The propane furnace is a 10 yr old Comfortmaker N9MP2.

The exhaust blower will start up, the igniter will glow, but it won't light. As a result we get a flash 6 + 1 code and it shuts down.

Any thoughts on how I should proceed?

Thank you!

Jason
 
Sponsored Links
  #2  
Old 10-16-13, 08:22 AM
firedawgsatx's Avatar
Member
Join Date: Jul 2013
Location: USA
Posts: 1,727
6+1 flash code is for a soft lockout meaning it had too many failed ignition attempts. Here is a link to a manual with some valuable information for your unit: http://icpindexing.toddsit.com/docum...4001102401.pdf
If you look at page 46 in the manual it shows the fault codes right below the fault code list it tells you how to get the stored fault code. Or you can turn the power off to the furnace and then back on and set thermostat to heat. Then watch the control board to see what code is flashed during start up. Then post the result.
 
  #3  
Old 10-16-13, 08:24 AM
Member
Thread Starter
Join Date: Jun 2013
Location: USA
Posts: 4
Thanks for the reply. We did shut off power and turned up the heat multiple times. The flashing code is the same each time.
 
  #4  
Old 10-16-13, 08:30 AM
firedawgsatx's Avatar
Member
Join Date: Jul 2013
Location: USA
Posts: 1,727
6+1 fault code should only come on after multiple attempts to light. Check page 46 in the manual I linked. Can you smell gas when the ignitor glows? Do you hear a click after it glows? Need to check voltage on gas valve. I suggest you clean the flame sensor rod with steel wool.
 

Last edited by firedawgsatx; 10-16-13 at 10:29 AM.
  #5  
Old 10-16-13, 12:32 PM
SeattlePioneer's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2007
Location: Seattle, Wa
Posts: 5,503
After the igniter glows, the gas valve should open to switch on the main burner gas and the burners should light.

Either the circuit board isn't turning on the power to the electric gas valve, the gas valve is burned out or you don't have a supply of gas to the furnace.

Connect a multimeter across the wires of the gas valve and see if you have 24 VAC appearing at that point for 2-5 seconds after the igniter heats up.

Also check to be sure that the furnace shutoff valve is turned to the on position and the electric gas valve is turned to the on position. Do you have other gas appliances that are operating which would verify that you have gas in your pipes?
 
  #6  
Old 10-18-13, 07:08 AM
Member
Thread Starter
Join Date: Jun 2013
Location: USA
Posts: 4
Thanks for the replies. It ended up being a clogged orifice. Heat is on!
 
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