Hitachi RAS-EH18RHLAE User manual

SERVICE MANUAL
TECHNICAL INFORMATION
 
 24 

PM 
 8  8 
 24  24 
   
CONTENTS

  

 
45 
 
 

 
 



Q  
& 

106 
 
SPECIFICIONS AND RTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
A P R IL 2021
 C  8 
 24 
 .  5 
 8 
� After installation

SPECIFICIONS

   
   
   
 
   
  
  
   
  
  
  
  
 
 
  
 














    
 
  

  
  (MAX.    
 z 

 

 
-5-
 z 

 

 

ATD141RDNA8JT 
K 
RAC
-
EH18WHLAE
RAC
-
EH24WHLAE
RAS
-
EH24RHLAE
RAS
-
EH18RHLAE

-6-
INDOOR MODEL
: RAS - EH18RHLAE

-7-
INDOOR MODEL : RAS - EH24RHLAE

-8-
OUTDOOR MODEL
: RAC - EH18WHLAE , RAC - EH24WHLAE

Important Notice
  


    

 



  

  


      

 



Product Inspection upon Arrival
  

              

  

 
             
          



  
   

- 9 -

SAFETY PRECAUTION


 

A RNING A CAUTION
 
0
@

A
w
A
R
N
I
N
G
A
C
A
u
T
I
0
N
RNING
   
              
     
      
           
                 
 
 
  


     

               




         
    
               
              
             
             
        
               
CAUTION
 
     
                 
   
           
                     
               
               
- 10 -

A
C
A
u
T
I
0
N
PRECAUTIONS DURING OPERATION
         
     
             

         
    
&I
-
0
             
          
      
          
           
               
    
             
             
           
     
            
        
      
           
             
           
     
              
              
                

          
                  
             
   
  
              
              
  
              
   
- 11 -

 
        
 
  
     
     
 
 
          
   
       
   
 
WIDTH in(mm)
30.70”(780)
MODEL
RAS-EH18RHLAE
HEIGHT in(mm)
11.07” (280)
DEPTH in(mm)
9.05” (230)
MODEL NAME AND DIMENSIONS
33.46”(850)
RAC-EH18WHLAE 25.59” (650) 11.73” (298)
OUTDOOR UNIT
DRAIN PIPE
Condensed water drain to outside.
CONNECTING CORD AND INSULATION PIPE FOR
PIPING
AIR INLET (BACK, LEFT SIDE)
AIR OUTLET
INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
A CAUTION
    
     
      


INDOOR UNIT INDICORS
 
    
      
  
  
      
  
       

     
  
      
   
     
     
     
     
 
        
 
 mporary
Switch
+I
F.Wash

             
           
                  
       
-1 3 -
MODEL RAS-EH18RHLAE

INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
Pre-fi lter
To prevent dust from coming into the indoor unit.
Front panel
Indoor unit indicators
LED light shows the operating mode.
Horizontal deflector • Vertical deflector
(Air Outlet)
Remote controller
Send out operation signal to the indoor unit. So
as to operate the whole unit.
Please refer to the Remote Manual provided for
functions and operation details.
WIDTH in(mm)
43.31”(1100)
MODEL
RAS-EH24RHLAE
HEIGHT in(mm)
11.81” (300)
DEPTH in(mm)
10.24” (260)
MODEL NAME AND DIMENSIONS
33.46”(850)
RAC-EH24WHLAE 25.59” (650) 11.73” (298)
OUTDOOR UNIT
DRAIN PIPE
Condensed water drain to outside.
CONNECTING CORD AND INSULATION PIPE FOR
PIPING
AIR INLET (BACK, LEFT SIDE)
AIR OUTLET
-1 4 -
A CAUTION
    
     
      


INDOOR UNIT INDICATORS
TEMPORARY SWITCH
Use this switch to start and stop when the remote controller does not work. [Use non-conductor stick
(example toothpick)]
●By pressing the temporary switch, the operation is done in automatic operation mode.
●When the operation is done using the temporary switch after the power source is turned off and turn
on again, the operation is done in automatic mode.
OPERATION INDICATOR
OPERATION LED
This LED lights during operation.
The OPERATION LED flashes/dimming in the following cases
during heating.
(1) 1) Duri preheating
For about 2–3 minutes after starting up.
(2) 2) Duri defrosting
Defrosting is performed about once every one hour
when frost forms on the heat exchanger of the outdoor
unit, for 5–10 minutes each time.
TIMER LED
This LED lights up when the timer is working.
FROST WASH LED
This LED lights when the Frost Wash function is in operation. If
the auto Frost Wash function is canceled and operation is
stopped, when the device is operated for a total of about 42
hours, the Frost Wash LED blinks to indicate that it is time
to operate the manual Frost Wash function.
(not applicable for Multi split connection)
-1 5 -
MODEL RAS-EH24RHLAE

THE IDEAL WAYS OF OPERATION
  
A Caution
A Warning
 



         

  
 
 
   
 

      
 
   
  

 
 

   
        
     
        
       
 
  
 
- 1 6 -


       
  

FOR USER'S INFORMION
The Air Conditioner And The Heat Source In The Room
A Caution

       
 
       

Not Operating For A Long Time
           
        
         
 
        
When Lightning Occurs
A Warning
       
   
Interference From Electrical Products
A Caution 



 
        
   
 
 j

gQ
  7 

AIRFLOW LOUVERS ADJUSTMENTS
         
                    
      
A RNING 
                        
           
- 18 -

TACHING THE AIR PURIFYING FIERS ( RAS - EH 18 RH L AE )
I A CAUTION
         
Open the front panel
   
 
Remove the Pre-filter
         

Attaching the air purifying filters
         
       
  
         
          
 
          
         
  


I A CAUTION
     
     
  
     
 
Attach the Pre-filters

   
        
         
NOTE
            

              
               
                   
               
               
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