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-   -   I have not heat and we are freezing LENNOX G12 FURNACE NO HEAT. (http://www.diychatroom.com/f17/i-have-not-heat-we-freezing-lennox-g12-furnace-no-heat-162493/)

jovacano 11-07-2012 01:12 PM

I have not heat and we are freezing LENNOX G12 FURNACE NO HEAT.
 
Lennox G12 series fan starts first and the pilot goes in 2 seconds, not heat. Please help.

jovacano 11-07-2012 01:15 PM

I already replaced the flame sensor thinking that was the issue...same problem fans starts first and the sparking goes crazy pilot lights on for just 2 o3 seconds...anybody out there who knows about lennox HELLLLPPPP PLEASE.!!

Doc Holliday 11-07-2012 01:17 PM

Place the sensor in a better position in the flame. Make sure all wire connections are tight, including ground wire. Does the control board have a ground? Is the high voltage have a ground that's connected?

Marty S. 11-07-2012 04:49 PM

Make a call to a good service company. That furnace is around 30 years old and you want a safety check every year to make sure the heat exchanger isn't cracked. They can tell you what's wrong while they're there inspecting the thing.


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