On Tue, 10 Dec 2013 13:31:33 -0700, Tony Hwang wrote:

Close the cover. And shut the power off to the furnace for 5 mins or so
and turn on the power. What happens now? Still fan comes on? Then we'll
do next step. Usually when hi temp limit switch(fixed temp. thermostat)
triggers furnace flame shuts off and fan runs to cool and when that
switch opens, fan will stop. I don't think your furnace is hot now.
Just maybe thatr switch is stuck close.(this is just one of possible
scenarios)

If this is the case furnace will lock up 2 hours something like that.
By turning power on/off you can defeat that 2 hour wait to try again.
Is it cold there? It is -14C and light snow here today.

Something I did must have worked, at least temporarily, because I got
pilot light finally tonight:
http://farm3.staticflickr.com/2845/1...8bf71569_o.gif

And then I got main burner:
http://farm8.staticflickr.com/7397/1...80c6d243_o.gif

And then I got blower:
http://farm8.staticflickr.com/7427/1...ceb36cd5_o.gif

But, I accidentally loosened the tape holding the door switch in,
so the whole thing died.

Trying again and again, I was able to get it to restart a couple of
times, but it shuts off almost immediately - like after just a minute
or two - so I have to figure out what's turning it off ...