Fujitsu General Australia

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 : All R32 model
  Number of problem ; more than 100 cases.
  Problem contents :
  From shortage of piping insertion by installer, flareless joint was came out due to piping pressure at heating operation.
  it is installer mistake, but, number of problem is large. So, any measure is necessary.
• Speculation of this result’s cause.
  It is installer mistake, but, lacked to call for attention.
• Measure
  )1 Added of pressure test process in installation manual. and, added to improve piping insertion method by using figure.
  (from 11^th Oct 2014)(Appendix1)
  
  )2 Attached of letter which will urge notice to installers.(from 11^th Oct 2014)(Appendix 2)
  
  <Testing at FGL>
  *1 About effect of pressure test
  ) Test condition
  Unit ; ASTG24KMCA
  Piping diameter ; 6.35mm/12.70mm
  Piping length ; 5 m
  Temperature ; Normal temperature(approximately 20 to 25 degree)
  
  ) Flareless connection condition
  Length of insertion is same as our rule. Torque strength is small.
  
  ) Piping fixing method
  Test was carried out by below 3 conditions
  1. Free(piping was not fixed)
  2. Piping was fixed tightly.
  3. Piping was pushed up from bottom.
  
   ) Result
  At all condition, Piping was come out when pressure is between 1 to 2 MPa.
  There was not risk of injury when piping was come out.
  As the result, if pressure test will carry out, installer will be able to find the connection mistake.
  
  *2 About packaging test of notice letter
  FGL was carried out the packaging test. As the result, No problem. (Appendix 4)
• Measure to product
  Already installed product; measures by each location if problem is occur.
  SERVICE HINT(Appendix 3) had been released. Then, Attempt to call for attention.
  Stock product; No measures.
  Manufacture product ; already measured.