As problem of title, I have received the problem report from quality assurance department.

I would like to inform about problem report detail.

  • Problem detail
    Product : ARXA24GALH(R000182)
    ARXD12GALH(R001383)
    ARXD18GALH(R001077)
    Problem contents :
    The installers have pressurised the piping and found pressure not to return to the outdoor condenser connections.
    He disconnected the indoor flares and pressure test through suction but nothing returning. Is there a reason for the EEV to be closed upon delivery.
  • Analysis result
    ) Confirmed the factory process.
    1. After testing about noise level by each operation mode, setting will back to the factory default setting by using F-mode.
    (If F-mode had been done correctly, EEV pulse become 800.)

    2. If F-mode is finished, operation lamp become off.
    Then, factory worker should supply the power until F-mode is finished (operation lamp become off) to product.
    If factory worker had pulled a power supply before F-mode is finished, EEV pulse of product become 0(closed).

    3. Administrator(factory reader) have instructed it to factory worker by word of mouth.
    But, this rule had not written in work instruction document.

    4. Factory worker did not know what may happen when power supply is pulled before F-mode is finished.
  • Speculation of this result’s cause.
    Worker had pulled power supply cable before F-mode is finished. Therefore, EEV pulse become 0, then it was shipped.
  • Measure
    Added this rule to work instruction document(Appendix 1) from 20th August 2014.
    Factory had carried out the training to factory worker.(Appendix 2), and teach what may happen when power supply is pulled before F-mode is finished.
  • Measure to product
    Already installed product; ; measures by each location if problem is occur.
    Stock product; no measures.
    Manufacture product ; already measured