Panasonic CU-2S18NBU-1 service manual Table of Contents

Page 1

Order No: PHAAM1111121A1

Outdoor Unit

CU-2S18NBU-1

Please file and use this manual together with the service manual for Model No. CS-S9NKUW-1, CS-S12NKUW-1 Order No. PHAAM1111084C1

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 product or products dealt with in this service information by anyone else could result in serious injury or death.

PRECAUTION OF LOW TEMPERATURE

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

TABLE OF CONTENTS

 

1.

Safety Precautions

3

2.

Specification

5

3.

Dimensions

7

4.

Refrigeration Cycle Diagram

8

5.

Block Diagram

9

6.

Wiring Connection Diagram

10

7.

Electronic Circuit Diagram

11

8.

Printed Circuit Board

12

 

8.1 Main Printed Circuit Board

12

 

8.2 Noise Filter Printed Circuit Board

13

9. Installation Information

14

9.1

Check Points

14

10. Installation Instruction

15

10.1

SELECT THE BEST LOCATION

15

10.2

INSTALL THE OUTDOOR UNIT

17

10.3

CONNECT THE PIPING

17

10.4

EVACUATION OF THE EQUIPMENT

18

10.5CONNECT THE CABLE TO THE

OUTDOOR UNIT

18

10.6 HEAT INSULATION

19

11. Operation Control

20

© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011. Unauthorized copying and distribution is a violation of law.

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Contents Table of Contents Disassembly and Assembly Instructions Items to be followed are classified by the symbols Safety PrecautionsPage Model Outdoor Unit CU-2S18NBU-1 SpecificationMulti split combination possibility Dimensions Refrigeration Cycle Diagram Block Diagram Wiring Connection Diagram Electronic Circuit Diagram Main Printed Circuit Board Printed Circuit BoardNoise Filter Printed Circuit Board Check Points Installation InformationOutdoor Unit Installation Diagram Installation InstructionOutdoor Unit Installation Guidelines Gas Leak Checking Connecting the Piping to Outdoor UnitEvacuation of the Equipment Heat Insulation Operation Control Powerful OperationCooling Operation Outdoor fan controlElectronic Parts Temperature Rise Protection 2 Cool Electronic Parts Temperature Rise Protection 1 CoolProtection Control Freeze Prevention control CoolIPM power transistor Protection Control Time Delay Safety Control Restart ControlCooling overload control Cool 12.7 30 seconds Force OperationValve close detection control Compressor Protection Control Gas leak detection controlCompressor discharge high pressure protection control Wiring Error Check Servicing ModePump Down Operation Test OperationMode priority function Power Save ModeSelf Diagnosis Function Troubleshooting GuideIndoor high Check indoor heat Exchanger Outdoor Unit Removal Procedure Disassembly and Assembly InstructionsRemoving the Cabinet Top Plate and Cabinet Front Plate Remove the Control Board Cover and Particular PlatesRemoving the Propeller Fan and Fan Motor Removing the Control P.C. BoardPage Operation Characteristics Technical DataCS-S9NKUW-1 CU-2S18NBU-1 Page CS-S9NKUW-1x2 CU-2S18NBU-1 Page CS-S12NKUW-1 CU-2S18NBU-1 Page CS-S12NKUW-1x2 CU-2S18NBU-1 Page CS-S12NKUW-1+CS-S9NKUW-1 CU-2S18NBU-1 Page Exploded View and Replacement Parts List REF. no Description & Name QTY Shock Absorber Left