Panasonic CU-2E15PBE - ECONAVI and AUTO COMFORT Features; nanoe-G Air Purification System; Multi Air Conditioner System Overview; Indoor Unit Operation in Multi Systems

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TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions ............................................. 3
2. Specifications ..................................................... 5
2.1 CU-2E15PBE ................................................ 5
2.2 CU-2E18PBE ................................................ 7
2.3 CU-3E18PBE ................................................ 9
2.4 CU-4E23PBE .............................................. 11
3. Dimensions ....................................................... 18
3.1 CU-2E15PBE CU-2E18PBE ..................... 18
3.2 CU-3E18PBE CU-4E23PBE ..................... 18
4. Refrigeration Cycle Diagram ........................... 19
4.1 CU-2E15PBE CU-2E18PBE ..................... 19
4.2 CU-3E18PBE .............................................. 20
4.3 CU-4E23PBE .............................................. 21
5. Block Diagram .................................................. 22
5.1 CU-2E15PBE CU-2E18PBE ..................... 22
5.2 CU-3E18PBE .............................................. 23
5.3 CU-4E23PBE .............................................. 24
6. Wiring Connection Diagram ............................ 25
6.1 CU-2E15PBE CU-2E18PBE ..................... 25
6.2 CU-3E18PBE .............................................. 26
6.3 CU-4E23PBE .............................................. 27
7. Electronic Circuit Diagram .............................. 28
7.1 CU-2E15PBE CU-2E18PBE ..................... 28
7.2 CU-3E18PBE .............................................. 29
7.3 CU-4E23PBE .............................................. 30
8. Printed Circuit Board ....................................... 31
8.1 Main Printed Circuit Board ......................... 31
8.2 Noise Filter Printed Circuit Board ............... 33
8.3 Display Printed Circuit Board ..................... 33
8.4 CPU Printed Circuit Board .......................... 34
9. Installation Information .................................... 35
9.1 CU-2E15PBE .............................................. 35
9.2 CU-2E18PBE .............................................. 36
9.3 CU-3E18PBE .............................................. 37
9.4 CU-4E23PBE .............................................. 38
10. Installation Instruction ..................................... 39
10.1 CU-2E15PBE CU-2E18PBE ..................... 39
10.2 CU-3E18PBE CU-4E23PBE ..................... 43
11. Operation Control ............................................. 48
11.1 Cooling Operation ....................................... 48
11.2 Heating Operation ...................................... 49
11.3 Outdoor Quiet Cooling Operation
Control ........................................................ 49
12. Simultaneous Operation Control .................... 51
13. Protection Control ............................................ 52
13.1 Freeze Prevention control (Cool) ............... 52
13.2 Dew Prevention control (Cool) ................... 52
13.3 Electronic Parts Temperature Rise
Protection 1 (Cool) ...................................... 52
13.4 Electronic Parts Temperature Rise
Protection 2 (Cool) ......................................52
13.5 Cooling overload control (Cool) ..................53
13.6 Heating overload control (Heat) .................53
13.7 Extreme Low Temperature Compressor low
pressure protection control (Heat) ..............53
13.8 Deice Control ..............................................54
13.9 Time Delay Safety Control
(Restart Control) .........................................54
13.10 30 seconds Force Operation ......................54
13.11 Total Current Control ..................................54
13.12 IPM (power transistor) Protection
Control ........................................................54
13.13 Compressor Protection Control
(Gas leak detection control 1) ....................55
13.14 Compressor Protection Control
(Gas leak detection control 2) ....................55
13.15 Valve close detection control ......................55
13.16 Compressor discharge high pressure
protection control ........................................55
14. Servicing Mode .................................................56
14.1 CU-3E18PBE & CU-4E23PBE ...................56
14.2 CU-2E15PBE & CU-2E18PBE ...................58
15. Troubleshooting Guide ....................................59
15.1 Self Diagnosis Function
(CU-2E15PBE and CU-2E18PBE) .............59
15.2 Self Diagnosis Function
(CU-3E18PBE and CU-4E23PBE) .............61
16. Disassembly and Assembly Instructions ......64
16.1 Outdoor Unit Removal Procedure
(CU-2E15PBE CU-2E18PBE) ...................64
16.2 Outdoor Unit Removal Procedure
(CU-3E18PBE CU-4E23PBE) ...................65
17. Technical Data ..................................................68
17.1 Operation Characteristics
(CU-2E15PBE) ...........................................68
17.2 Operation Characteristics
(CU-2E18PBE) ...........................................72
17.3 Operation Characteristics
(CU-3E18PBE) ...........................................76
17.4 Operation Characteristics
(CU-4E23PBE) ...........................................88
18. Exploded View and Replacement Parts
List .................................................................. 100
18.1 CU-2E15PBE CU-2E18PBE .................. 100
18.2 CU-3E18PBE CU-4E23PBE .................. 103