I have serviced these furnaces for 20 years and I can tell you most of these models did not have diagnostic lite on them. Public Finance And International Trade Pdf Notes. (although some did, especially if the control board has been replaced) The problem is most likely a bad 3 wire pilot. Ricoh C4500 Service Manual - Free Software And Shareware.

This will cause exactly what you describe. 2 things to consider though. 1, If you were to replace the pilot don't get a cheaper knockoff.

Carrier 309868-755 Draft Inducer Motor Assembly w. Carrier 309868-755 Draft Inducer Motor Assembly w/ Capacitor. C-100GG, 58SXA060---100GG, 58SXA080-C.

In my experience these do not last long at all. Get the right one from a carrier dealer. It will cost more but be much more reliable.

2 What is the condition of the secondary heat exchanger? Most if not all of the sx series had issues with the secondary heat exchangers rotting out and leaking. If the furnace is out of warranty you would be much better replacing the furnace as the cost of replacing the secondary heat exchanger will probably be almost the same as a new furnace. ( those babies are EXPENSIVE!) Dec 17, 2007 .