Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
If our community has helped you, please consider making a contribution to support this website. Thanks!

Amana Heat Pump “01” Fault Code

Options
tlebrecht1
tlebrecht1 Member Posts: 3
in A-C, Heat Pumps & Refrigeration

Amana (Goodman) Model #: ASZC180361CA

Outdoor Heat pump unit is throwing a 01 Fault Code (Low pressure CO trip).

Have tried replacing capacitor, and numerous full system restarts. The unit will come on for 1.5 minutes and then shut off. It also shuts off the air handler when this happens. Thermostat and air handler are both calling for cooling, (AC2 displayed on air handler). Attempted holding down “test” button on outdoor unit. No change.


Any thoughts would be helpful.

Thank you.

Comments

  • Ironman
    Ironman Member Posts: 7,924

    Low pressure comes from loss of load on the evaporator (usually an air flow issue) or loss of refrigerant feeding evaporator (usually low on refrigerant).

    A capacitor has nothing to do with low pressure.

    Start with the basics: is your filter clean?

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • tlebrecht1
    tlebrecht1 Member Posts: 3

    yes, everything is clean. Replaced capacitor before noticing the error code.

    system is 3 years old.

  • Ironman
    Ironman Member Posts: 7,924

    Again, if your air flow is good, then most likely the system is low on refrigerant. In which case, the leak should be located and repaired and the system properly recharged.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 20,452

    Did the system ever work correctly?

    Was the indoor airflow ever checked?

  • tlebrecht1
    tlebrecht1 Member Posts: 3

    Airflow is great. Plenty of pressure on the high side, low pressure on the low side most likely Tx Valve. Coils are not even getting cold before unit shuts down with the fault code.

  • pecmsg
    pecmsg Member Posts: 7,260
    https://forum.heatinghelp.com/discussion/comment/1898460#Comment_1898460

    BS

    What’s the static pressure?

    Whats the SH, SC?

  • mattmia2
    mattmia2 Member Posts: 17,384

    i bet the sh is like 40f

  • 109A_5
    109A_5 Member Posts: 4,202
    image.png
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 20,452

    low on refrigerant but more likely a failed TXV or powerhead. Check the superheat and subcooling. They are both probably very high. liquid stacking in the condenser causing high subcooling and bad txv causing high superheat.

    Good way to burn a compressor.

Categories