Help -its Hot. Blower dead- but why? - http://www.hvacmechanic.com/ Forums
Original message
| cincyr
 |  "Help -its Hot. Blower dead- but why?"
, posted Sat 19 Jul 01:31:  
Seems blower is dead. - can't figure out why.
No fan, no cooling or heating coming through the house.
Burners are working, condenser unit working (makes ice).
Ducts are working.
Filters are clean, cage is clean.
Jumped R to G - nothing
Test to C - inducer motor goes on - no blower hi or low come on.
Replaced motor and capacitor - nothing.
LED light sup.
Audible "click" heard at motherboard for fan to start but...nothing.
Carrier 9200 Weathermaker
Appreciate any ideas. Thanks.
[this message was edited by cincyr on Sat 19 Jul 08:27] |
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| cincyr
| "Re(1):Help -its Hot. Blower dead- but why?" , posted Fri 25 Jul 23:17
Well, it was the board after all!
Actually, it was a known carrier problem where the solder comes off of the board. I resoldered the one that came off at the Hi/Lo relay - and the blower works great!
Thanks Houston.
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| Houston204
| "Re(1):Help -its Hot. Blower dead- but why?" , posted Sat 19 Jul 09:38
Measure for 120VAC at COOL and Neutral with demand.
If voltage is not present with demand replace your circuit board.
"Tip of the Day" Remember to remove power first.
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| | cincyr
| "Re(2):Help -its Hot. Blower dead- but why?" , posted Wed 23 Jul 21:39
Thank you.
Measurements:
R+C -> ~24VAC
G+C -> ~24VAC
Y+C -> 0 VAC
R+G -> 0 VAC
Cool+Neutral -> 0 VAC with Fan on
Transformer -> 128VAC , 28VAC
Seems like the board despite hearing the audible click at the relay right?
Thanks.
Carrier 9200, Model 58MXA 100-16
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