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Goodman CPB 42 Heat/air packaged unit

The outside unit was staying on all the time and the problem seemed to be the contactor not releasing. I replaced the exact contactor and now the contactor will not connectwhen heat or air is called for - so now the unit will not come on? Is it something Iam missing?

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  • david_mitche Jan 31, 2009

    I turned off the power before replacing,it does have a coil and I do have 24v on the contactor. The unit will come on when the contactor is pushed in but will not pull in and stay in when thermostat calls for it.

  • Anonymous Feb 01, 2009

    The contactor will not stay in when pushed in, the coil seems to be OK ie: 26v @ contactor and the wiring looks OK - 16ga and not shorted. The old contactor would pull in when the thermostat called for heat but would not release when cycle was complete. The new contactor is just the opposite. I am currently forcing the contactor in making the unit stay on and controlling the cycle with the unit disconnect.

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Did you turn off the air handler when you changed the contactor could have shorted and blown a fuse on the control board. did you get a 24v coil on your contactor. do you have 24v at the contactor when unit is calling. check your wire connections

Posted on Jan 31, 2009

  • mopar440man Feb 01, 2009

    you said that you have 24v at the contactor coil. my question is does the contactor stay in when you have pushed it in. if so sounds like low voltage wires may be to small or to long of a run, wire should be no smaller then 18ga. does your unit have any high or low pressure controls on it. if not and you have power at coil recommend to ohm coil on contactor. may have bad contactor out of the box.

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