I would not go straight away and buy a thermocouple, the test for that beastie is to remove the old one, heat the sensor end with a propane
torch until a dull red color, take a volt meter set to the milli volt scale and place measuring probes one dead center and the other to the outside of the wire like capillary tube, contact metal, if the measure is in the 30 milivolt range you are fine.
If you do not have a voltmeter, then clean the end of the thermocouple with a fine nail emery board, clean the inside "screw in" port of the gas valve where the thermocouple screws in. Finish cleaning with alcohol and Q-tip.
Light the pilot once its set up again and hold the button 5 min, make sure the pilot flame heats the thermocouple midway to the end to a dull red color, if not able to do so adjust valve at pilot adjustment screw or unplug pilot orifice.
You may after 5 minuets pushing the button tap on the side of the gas valve body with the [b]plastic end
of a screw driver [b]sharply but not heavy
, if not operated in a while they stick...the tapping often frees it up.
Thanks Donna, your great. I did find the same manuals.
This furance I believe is a gravity type / radiant type furnace, not forced air. It has a piezo igintor, pilot light and a manual gas control valve.
Very simple, I think I will clean it well and, hook up a gas line which is missing and give it a try.
If pilot doesn't stay lit I will replace the themo couple.
It only has a limit switch, thermo couple and manual gas valve.
If anyone has worked on this type furnace? pitch in.