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    lahend's Avatar
    lahend Posts: 2, Reputation: 1
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    #1

    Aug 26, 2007, 05:05 PM
    Lennox compressor not coming on
    HELP PLEASE... I have a Lennox a/c unit... the compressor all of sudden stopped awhile ago. The thermostat display is working fine and the fan comes on when I turn it from "auto" to "fan"... but the outside unit won't come on at all. I tried turning main breaker off and on but nothing. ANY SUGGESTIONS...
    esquire1's Avatar
    esquire1 Posts: 2,483, Reputation: 209
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    #2

    Aug 26, 2007, 05:21 PM
    At the outside unit do you have 220 volts coming into the contactor? Is the contactor pulling in? Check the 2 wires from the air handler going to the outside unit. Has a weedeater or animal chewed them? You can take a screwdriver and manually push it on the contactor. Does everything work when you do this?
    acetc's Avatar
    acetc Posts: 1,004, Reputation: 79
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    #3

    Aug 26, 2007, 08:22 PM
    Some Lennox units have a manual reset high pressure reset switch in the outside unit,remove the access panel, it is a red button that you have to push in. This switch will kick off in the event of high pressure , caused by the fan motor failing or a dirty condenser, if motor runs take a water hose to the coil and wash. Good luck, Mike
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