Gas and Oil Home Heating Furnaces - A/C Motor, Thermostat, or other???

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cblb525
06-13-01, 08:24 PM
Hi - I have an older house with central air, but I do not know the age of the system. When I went to turn it on Monday afternoon, air was moving through the ducts, but it did not get cool. I went to check the outside unit and saw that the fan was not moving. I replaced the 3-way capacitor today, but still have no movement or sounds from the outside unit. I have a "fix-it" book that suggested checking the motor leads with a volt/ohm meter. The book stated that the leads should test between 2 and 30 ohms (at RX 1), but my leads tested at 35 and 50. Also, my digital thermostat, which I do not have the manual for, is not working properly. It has always been very user friendly in the past, but as of this week, I can only set the day, date, and time. I can not view or set any of the programs or see the actual temperature. I have checked the breakers and all is fine there. I need to know if I should replace the motor or if there is anything else I need to check before I call in the professionals. Thanks for the help.
Dave
CBLB525@peoplepc.com

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06-14-01, 03:14 PM
to outside unit and blower.Remove tstat,take red,green and yellow wires.Twist them together.Turn power on and see what happens.Fan should start,and a/c should start.Give us a holler back.OH,YES,digital tstats.If you go back for months in this forum it is more than likely the "DIGITAL TSTAT" that causes so much trouble.PDF