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Help with Goodman GSXC16 Error code 04

EdTheHeaterMan
EdTheHeaterMan Member Posts: 10,808
in Radiant Heating

3 years ago my son installed a new Goodman GSXC16024 that has been working fine for the first two summers, and the beginning of this summer. About 3 weeks ago there was no AC and he found error code 04 on the condensing unit PCB display. I wanted to look up the technical documents for this unit and I am unable to find the IO manual or Trouble shooting info online. Does anyone here (other than @pecmsg) have info that might help? Is there a technical bulletin on this particular issue?

Cycling the 220 vac off to the outdoor unit and the indoor unit will bring the system back to operation. It will operate for several days and the stop. Now it is becoming more frequent.

There was a discussion on this same issue in 2021 on HVACTechTalk, but I did not see any resolution on that thread.

I think that he may need to call goodman tech support when he is at the equipment in order to get the answers, but I seem to be his GoTo tech support person on all things automotive, Oil Heat and HVAC, so that is why I'm asking

Edward Young Retired

After you make that expensive repair and you still have the same problem, What will you check next?

PC7060dxfhczz

Comments

  • 109A_5
    109A_5 Member Posts: 2,540
    image.png image.png

    https://hvacdirect.com/media/hvac/pdf/GSXC16-Install.pdf

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
    EdTheHeaterManPC7060
  • HVACNUT
    HVACNUT Member Posts: 6,918
    CoreSense.pdf

    Goodman uses the CoreSense module.

  • 109A_5
    109A_5 Member Posts: 2,540

    The dates are interesting and this unit may be much newer so it may be different than either of these documents posted.

    image.png
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • pecmsg
    pecmsg Member Posts: 6,346
    https://forum.heatinghelp.com/discussion/201879/help-with-goodman-gsxc16-error-code-04

    I’m Hirt


    but see rundog answered your question 😇

    EdTheHeaterMan
  • Harvey Ramer
    Harvey Ramer Member Posts: 2,268

    Check easy things first. Electrical connections, capacitors, start components.

    If those are all good, let the system cool off completely. Reset by cycling power. Measure the suction temp and discharge temp at the compressor, as well as the amp draw/voltage.

    If the superheat across the compressor is high and amp draw low, you aren't moving enough refrigerant to cool the compressor and it will trip the common internal overload after a longer run time. That can come from low refrigerant, high head pressure ( dirty condenser, blockage or malfunctioning fan).

    If the compressor superheat is low and the amp draw is high, that would mean it's pumping to much gas and overloading the motor to the point of tripping the internal overload. This scenario would be most common in a horizontal right airhandler application where the txv bulb is in the return Airstream and not properly insulated or loose from the pipe.

    And lastly, it could be a bad compressor.

    PC7060EdTheHeaterMan
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 18,316

    Or the voltage may be marginal and it needs a hard Start Kit

    SuperTech
  • mattmia2
    mattmia2 Member Posts: 13,736

    Sounds like time to measure the voltage and current at the capacitors an calculate the capacitance to see if it is even close. 3 years seems about right for lowest bidder caps.

    EdTheHeaterMan
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 10,808
    https://forum.heatinghelp.com/discussion/comment/1862133#Comment_1862133

    Capacitance measured is 34.4 uf, capacitance rated is 35.0 uf. is that within 6% plus or minus.

    https://forum.heatinghelp.com/discussion/comment/1862114#Comment_1862114

    Testing that possibility. first step is to re do all the wiring connections. Seems that all the failures happen around 3 PM when the setback ends and the system starts to recover. If redressing the wiring does not fix the problem, then removing the setback to see if that is the cause of the problem. I don't want to change too many things all at once. Then we won't know what one of the many fixes worked.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    PC7060
  • SuperTech
    SuperTech Member Posts: 2,616

    I've dealt with this a lot. In my experience the causes are either a dirty condenser coil or the system needs a good 5-2-1 hard start kit installed. Goodman and Amana units really need to have the hail guards removed to be able to clean the coil effectively. And if the system has TXV I would definitely check the superheat. 3/4 of them need some adjustment to set the superheat correctly.

    EdTheHeaterMan
  • mattmia2
    mattmia2 Member Posts: 13,736

    I'd probably put a soft starter on it instead of a hard start if it really has a power issue that keeps it from starting sometimes.

    Does it have a time delay in the condenser? Is it possible something happens control wise trying to start it before it has equalized under some condition?

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