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Table of Contents 
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Cautions 
Safety Instructions and warnings
Before starting the air conditioner, read 
the  information  giving  in  the  User's 
Guide  carefully.  The  user's  Guide 
contains  very  important  observations 
relating to the assembly, operation and 
maintenance of the air conditioner.
The  manufacturer  does  not  accept 
responsibility  for  any  damages  that 
may  arise  due  to  non-observation  of 
the following instruction.
Damaged air conditioners are not to 
be put into operation. In case of doubt, 
consult your supplier.
Use  of  the  air  conditioner  is  to  be 
carried out in strict compliance with the 
relative  instructions  set  forth  in  the 
User's Guide.
Installation  shall  be  done  by 
professional  people,  don't  install  unit 
by your self.
For  the  purpose  of  safety,  the  air 
conditioner must be properly grounded 
in accordance with specifications.
Always  remember  to  unplug  air 
conditioner  before  opening  inlet  grill. 
Never  unplug  your  air  conditioner  by 
pulling on the power cord. Always grip 
plug firmly and pull straight out from the 
outlet.
All electrical repairs must be carried 
ou t   b y   qu a l if i e d  e l e ct r i ci a n s.  
Inadequate  repairs  may  result  in  a 
major source of danger for the user of 
the air conditioner.
Do not damage any parts of the air 
conditioner  that  carry  refrigerant  by 
piercing  or  perforating  the  air 
conditioner's  tubes  with  sharp  or 
pointed items, crushing or twisting any  
tubes, or scraping the coatings off the
Cautions 
Parts & Functions
Specifications 
Operation
Installation 
Maintenance
Trouble Shooting
2-3
4-5-7-9
6
10-24
25-36
37-40
41-42
Model & Series 
HSU-12LNA/022L(W)
HSU-12LNF/022L(W)
HSU-12LTK/012YL(W)
HSU-12LTK/012YL(G)
HSU-12LTC/012YL(R)
HSU-12LTC/012YL(GREEN)
HSU-12LTC/012YL(BLUE)
HSU-12LTG/012YL(W)
HSU-12LTZ/012YL(W)
HSU-12LTH/012YL(W)
HSU-12LTF/012YL(W)
HSU-18LNA/022L(W)
HSU-18LNF/022L(W)
HSU-18LTK/022L(W)
HSU-18LTC/022L(R)
HSU-18LTC/022L(GREEN)
HSU-18LTC/022L(BLUE)
HSU-18LTG/022L(W)
HSU-18LTZ/022L(W)
HSU-18LTH/022L(W)
HSU-18LTF/022L(W)
HSU-24LTC/012L(R)
HSU-12HTR/012YL(W)
HSU-18HTR/012L(W)
HSU-24HTR/012L(W)