Panasonic S18NKUA Service Manual

Panasonic Air Conditioners Service Manual - S18NKUA.
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© Panasonic Appliances Air-Conditioning Malaysia 
Sdn. Bhd. 2012. Unauthorized copying and distribution 
is a violation of law. 

 

Order No: PAPAMY1204086CE 

 

 
 

Indoor Unit 

Outdoor Unit

 

CS-S18NKUA 
CS-S24NKUA 

 

CU-S18NKUA
CU-S24NKUA

 

 

 

 

 
TABLE OF CONTENTS 
1.
  Safety Precautions.............................................3 
2.  Specification .......................................................5 

3.  Location of Controls and Components ...........7 

3.1 

Indoor Unit....................................................7 

3.2 

Outdoor Unit .................................................7 

3.3 

Remote Control ............................................7 

4.  Dimensions.........................................................8 

4.1 

Indoor Unit....................................................8 

4.2 

Outdoor Unit .................................................9 

5.  Refrigeration Cycle Diagram...........................10 
6.  Block Diagram ..................................................11 

7.  Wiring Connection Diagram............................12 

7.1 

Indoor Unit..................................................12 

7.2 

Outdoor Unit ...............................................13 

8.  Electronic Circuit Diagram ..............................14 

8.1 

Indoor Unit..................................................14 

8.2 

Outdoor Unit ...............................................15 

9.  Printed Circuit Board .......................................16 

9.1 

Indoor Unit..................................................16 

9.2 

Outdoor Unit ...............................................18 

10. Installation Instruction.....................................19 
11. Operation Control.............................................27 

11.1  Basic Function............................................27 

11.2  Indoor Fan Motor Operation.......................28 

11.3  Outdoor Fan Motor Operation ....................28 

11.4  Airflow Direction .........................................28 

11.5  Quiet Operation (Cooling Mode/Cooling Area 

of Dry Mode)...............................................29 

11.6  Powerful Mode Operation ..........................30 

11.7  Timer Control..............................................30 

11.8  Random Auto Restart Control ....................30 

11.9  Indication Panel..........................................31 

12. Protection Control............................................32 

12.1  Restart Control (Time Delay Safety Control) .

 ....................................................................32 

12.2  30 Seconds Forced Operation ...................32 

12.3  Total Running Current Control ...................32 

 

PRECAUTION OF LOW TEMPERATURE 

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

 

 

WARNING 

This service information is designed for experienced repair technicians only and is not designed for use by the general public. 
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. 
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to 
service or repair the products dealt with in this service information by anyone else could result in serious injury or death. 

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