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jessicabeasley1
Nov 6, 2009, 07:26 AM
I have a Armstrong Ultra sx 90, when thermostat is set the blower comes on but it does not ignite.

hvac1000
Nov 6, 2009, 07:36 AM
Ckeck blink/flash codes on circuit board and look on back of blower door for meaning then post the information here.

jessicabeasley1
Nov 6, 2009, 07:44 AM
I have the model# GUK100D14-1B and serial#8496F32048

KC13
Nov 6, 2009, 10:12 AM
Looks like there is some GUK in the model #. Try cleaning it out and see if it helps. :p Sorry, couldn't resist. I am so bad today!

hvac1000
Nov 6, 2009, 06:07 PM
Did you look at the number of flashes/blinks??