Outside unit won't turn on - AC Help needed ! - http://www.hvacmechanic.com/ Forums
Original message
| rolfe
 |  "Outside unit won't turn on - AC Help needed !"
, posted Wed 23 Apr 00:17  
(Lennox under house 1yr old -red LED flashes slow steady/ Carrier unit outside)
PROBLEM: Heat appears to work fine - AC NOT working !
- Replaced shorted 24v wire (mouse chewed) from inside to outside unit still No AC.
- Outside Carrier is getting 240vac - can push temporary contact and will turn unit on but nothing blows inside house.
SUGGESTIONS ON WHAT TO REPAIR ??
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Replies:
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| Houston204
| "Re(1):Outside unit won't turn on - AC Help ne" , posted Wed 23 Apr 07:25
Measure for 24 volts at the control wire entering your condenser. If not present with cooling demand, measure for 24 volts at Y and C at your furnace. If you have signal leaving your furnace but not your condenser, you prbably have a second cut.
A low voltage breaker or a fuse usually trips when the 2 wire to the condenser is damaged.
The fan will run continuously on some makes when 24 volts is not present.
"Tip of the Day" Remember to remove power first.
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