15 Yr old Lennox won't keep running


Old 10-23-12, 08:55 AM
Thread Starter
Join Date: Oct 2012
Location: Canada
Posts: 1
15 Yr old Lennox won't keep running

It started to a few days ago, didn't want to keep running after initial start up (flame on) now it does the initial vent blower, heat strip hot, gas fires for about 10 seconds and the quits. When it does it's own restart it keeps going for 5 seconds and the next time for 2 or 3 seconds until it times out. When it starts to run initialy the 2 green lights are flashing and continue to flash the whole time. After it times out I either have to reset the thermostat or pull the front panel where the auto disconect switch is attached to the panel. Any thoughts?
Sponsored Links
Old 10-23-12, 03:52 PM
NJT's Avatar
NJT is offline
Join Date: Oct 2006
Location: USA
Posts: 23,539
Likes Received: 1
Not too familiar with the Lennox appliances... and they don't make their info available on the web... [I just went to their website and find that they may have changed their policy on that, there ARE some installation manuals available] so in case we can find something, what is the full model number of the boiler? (it IS a boiler right? not a hot air furnace?)

In general what you are describing sounds as if the control circuit is not sensing the flame properly.

Gas systems have 'flame rods' that sense the flame and send signal back to control that proves flame, else the control shuts down the gas.

Tell us more...

Last edited by NJT; 10-23-12 at 04:18 PM.
Old 10-23-12, 04:08 PM
Join Date: Oct 2008
Location: USA
Posts: 2,853
Likes Received: 3
Please confirm that this is a hot-water boiler and not a forced air furnace.

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