Panasonic CU-3E19RBU CU-4E24RBU Outdoor Unit Service Manual and Parts List Manual


Accurate, clear and concise text, combined with detailed illustrations, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your Air Conditioner.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your appliance.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

1. Safety Precautions

2. Specifications
2.1 CU-3E19RBU
2.2 CU-4E24RBU

3. Dimensions
3.1 CU-3E19RBU
3.2 CU-4E24RBU

4. Refrigeration Cycle Diagram
4.1 CU-3E19RBU
4.2 CU-4E24RBU

5. Block Diagram
5.1 CU-3E19RBU
5.2 CU-4E24RBU

6. Wiring Connection Diagram
6.1 CU-3E19RBU
6.2 CU-4E24RBU

7. Electronic Circuit Diagram
7.1 CU-3E19RBU
7.2 CU-4E24RBU

8. Printed Circuit Board
8.1 Main Printed Circuit Board
8.2 Noise Filter Printed Circuit Board
8.3 Display Printed Circuit Board

9. Installation Information
9.1 CU-3E19RBU
9.2 CU-4E24RBU

10. Installation Instruction
10.1 CU-3E19RBU
10.2 CU-4E24RBU

11. Operation Control
11.1 Cooling Operation
11.2 Heating Operation

12. Simultaneous Operation Control

13. Protection Control
13.1 Freeze Prevention control (Cool)
13.2 Dew Prevention control (Cool)
13.3 Electronic Parts Temperature Rise Protection 1 (Cool)
13.4 Electronic Parts Temperature Rise Protection 2 (Cool)
13.5 Cooling overload control (Cool)
13.6 Heating overload control (Heat)
13.7 Extreme Low Temperature Compressor low pressure protection control (Heat)
13.8 Deice Control
13.9 Time Delay Safety Control (Restart Control)
13.10 30 seconds Force Operation
13.11 Total Current Control
13.12 IPM (power transistor) Protection Control
13.13 Compressor Protection Control (Gas leak detection control 1)
13.14 Compressor Protection Control (Gas leak detection control 2)
13.15 Valve close detection control
13.16 Compressor discharge high pressure protection control

14. Servicing Mode
14.1 CU-3E19RBU
14.2 CU-4E24RBU

15. Troubleshooting Guide
15.1 Self Diagnosis Function
15.2 Self-diagnosis Method

16. Disassembly and Assembly Instructions
16.1 Outdoor Unit Removal Procedure (CU-3E19RBU)
16.2 Outdoor Unit Removal Procedure (CU-4E24RBU)

17. Technical Data
17.1 CU-3E19RBU
17.2 CU-4E24RBU

18. Exploded View and Replacement Parts List
18.1 CU-3E19RBU
18.2 CU-4E24RBU