[RFI] Lennox furnace RF solutions‏

[Glenn Pearson]

Dave,

Below are links to various list messages that I found regard "Lennox furnace RFI" I thought Trane had the most problems but now I retreat from that position. Although problems can and do occur in all furnaces, it seems the component that comprises most of the complaints is the variable speed induction motor. I have three HVAC systems here, 2 are Trane and 1 is a Carrier. Both Trane Systems WERE quiet for a number of years. The newest one, the XV95, was installed in 2008. I have isolated noise from both units. The noise from the oldest Trane is tolerable. The XV95 is intolerable in the winter when the furnace is being used. RFI is definitely present when the AC is running but its intensity varies. The oldest of the three, the Carrier, was installed in 2000 and is still very quiet. It does not have the variable speed motors.


see  http://www.eham.net/ehamforum/smf/index.php?topic=86888.0

according to the above, Lennox has a RFI Kit, Part # 604552-01


Be to follow discussion thru the second page   http://www.eham.net/ehamforum/smf/index.php/topic,86888.15.html

see   http://www.cozyparts.com/lennox-parts/forum/topic.asp?TOPIC_ID=4295

https://www.flickr.com/photos/va5lf/4178080724/

The above is a fix for the G71MPP

There is a similar kit for the Trane XV95. Success rate for this one varies. 
 http://www.crompton.com/hamradio/Trane%20XV95%20RFI%20Documentation.pdf

See "TRANE FURNACE RFI"  in the THE AM FORUM : http:/amfone.net/AMFORUM/index.php?action=printpage;topic=29720.0   November 28, 2011 thru February 17, 2012

search the list archives for Topband at contesting.com and RFI at contesting.com . 

Good luck,

Glenn, WU2G