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 : ASTG12LVCC (serial number ; unknown)
Problem contents : when cooling operation, refrigerant noise was occurred. - Analysis result
they could not analysis, because sample unit could not get.
But, same problem(please refer to attached e-mail) had been occurred.
heat exchanger of attached e-mail’s product(ASTG09LVCC) is same as ASTG12LVCC’s one. - Speculation of this result’s cause.
<Same as GS14-031>
Welding had been carried out in the state of insufficient pipe parts insertion.
Therefore, solder had flowed into the pipe. - Measure
As to piping insertion method, factory prescribed like attached pdf file. - Measure to product
Already installed product; ; measures by each location if problem is occur.
Stock product; no measures.
Manufacture product ; already measured