I have an old bryant unit . It has worked fine until the other day. Blower works fine but no heat. Pilot was out so I lighted it and it worked fine for the night. The next day no heat again. Pilot was out again. Trie to light but will not light. Friend told me to replace the therm coupler. Here is where I am stuck. The heater doesn't have one or I am just blind.
Is it possible the unit is to old for that style and has a different set up. All I see is the pilot and the feed line, the pilot has two wires comong from it.
Thanks for any help:confused:

You might have the two or three wire pilot safety. If so it will be mounted where the thermocouple would be . Look for the wires that come out of the bottom.

Look on this page for the tow and three wire pilots to see what they look like.

Bryant pilot, Heating, Cooling Air, Cards items on eBay.com

The two wire pilot assembly is a safety for the burners. It has to have a pilot flame to heat up the bimetal strip before it will turn on the burners. Its not a pilot safety it's a main burner safety. Make sure your pilot orifice is clean and you have a strong pilot flame. A system this old you may have a crack in the heat exchanger blowing the pilot out, I would get it checked out by a tech. Good luck.