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[email protected][_2_] trader4@optonline.net[_2_] is offline
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Default How to test a wall thermostat to see if it's actually working?

On Tuesday, December 10, 2013 7:26:39 PM UTC-5, Danny D'Amico wrote:
On Tue, 10 Dec 2013 15:08:26 -0800, wrote:



Turn furnace switch off.




There is no furnace switch, that I know of.


May be different in your part of the world and I'm not
sure what that code actually says. But every furnace I've
ever seen there has been at least one emergency switch with
a red plate. Sometimes it's in the basement stairwell,
with the furnace in the basement.




The wires come directly into the furnace from the outside.

Of course, I can shut off a breaker ...



Connect the red wire to the white wire.


Turn the furnace switch back on.




OK. I have the breakers off. I'll wait a few minutes now.



From another post, before I ruin something, is this correct?

a. Connecting red to white should fire the furnace

b. Connecting red to green should turn the blower on



Is this where I should make those jumper connections?

http://farm3.staticflickr.com/2849/1...e7793ca9_o.gif



Yes, you can jumper from the red to the white on the
right side, the R and WH terminals.








BTW, normally I *measure* stuff (voltages usually) before jumping

from one point to another; but I would need to know what *two*

points to measure. Based on Stormin' Mormon's prior post, I'll read:



A. Red to White (AC voltage) ... is this what I should read?

B. Red to Green (AC voltage) ... is this what I should read?



NOTE: I haven't finished reading everything, so, if I'm repeating,

I apologize.



It's unlikely it's the thermostat to begin with, so why waste time


on all kinds of tests when there is a simple and very direct method?




I've buttoned up the thermostat. It just took me a while to report

back because I was trying to figure out how the darn furnace works

and what the parts were...


If you hadn't put it back together, you could have just connected
the red and white together there.