Help! Lennox Furnace not warming - http://www.hvacmechanic.com/ Forums
Original message
| thesloanfamily
 |  "Help! Lennox Furnace not warming"
, posted Fri 17 Oct 21:29  
Please Help! I have a Lennox Pulse model #G14Q3-80-19. Installed in 1995. Indicator light comes on after cycling for 5 minutes- glows red- light turns off after cycling power then light comes back on after another 5 minutes. Please advise if you know what the problem might be.
|
|
Replies:
|
| TnNATE1412
| "Re(1):Help! Lennox Furnace not warming" , posted Sat 18 Oct 14:46
You need to have a Lennox servicer (qualified on PULSE furnaces) to check the system. Pulse furnaces are not serviceable by just any service technician/homeowner.
|
| techshawn
| "Re(1):Help! Lennox Furnace not warming" , posted Fri 17 Oct 21:44
if i don't misunderstand what you depicted, you saw the ignitor working, right? if so, the problem could be a dead gas valve.
I like fixing everything.
|
| | thesloanfamily
| "Re(2):Help! Lennox Furnace not warming" , posted Fri 17 Oct 22:35
the red light that's on is the diagnostic indicator light. it's inside of a black rectangular box. It's an automatic ignition system. the blower works because the furnace kicks on and blows air, but that's it.
|
| | Freon
| "Re(3):Help! Lennox Furnace not warming" , posted Sat 18 Oct 16:02
Have someone at the thermostat call for heat while you are at the furnace. Tell us everything you see and hear... make a timeline. We need to know at what point the ignition process stops. The small blower (draft inducer), if present, should start immediately. Then some form of ignition should happen... either a spark or a glowing element. Then the click of a gas valve opening followed by the main burners igniting.
|
|
|
|  |
|
