Panasonic CU-2E18SBE User Manual

2
TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions ............................................. 3
2. Specifications ..................................................... 5
2.1 CU-2E12SBE ................................................ 5
2.2 CU-2E15SBE ................................................ 7
2.3 CU-2E18SBE ................................................ 9
2.4 CU-3E23SBE .............................................. 11
3. Dimensions ....................................................... 23
3.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE .............................................. 23
3.2 CU-3E23SBE .............................................. 23
4. Refrigeration Cycle Diagram ........................... 24
4.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE .............................................. 24
4.2 CU-3E23SBE .............................................. 25
5. Block Diagram .................................................. 26
5.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE .............................................. 26
5.2 CU-3E23SBE .............................................. 27
6. Wiring Connection Diagram ............................ 28
6.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE .............................................. 28
6.2 CU-3E23SBE .............................................. 29
7. Electronic Circuit Diagram .............................. 30
7.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE .............................................. 30
7.2 CU-3E23SBE .............................................. 31
8. Printed Circuit Board ....................................... 32
8.1 Main Printed Circuit Board ......................... 32
8.2 Noise Filter Printed Circuit Board ............... 34
8.3 Display Printed Circuit Board ..................... 34
8.4 CPU Printed Circuit Board .......................... 35
9. Installation Information .................................... 36
9.1 CU-2E12SBE CU-2E15SBE ..................... 36
9.2 CU-2E18SBE .............................................. 37
9.3 CU-3E23SBE .............................................. 38
10. Installation Instruction ..................................... 39
10.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE .............................................. 39
10.2 CU-3E23SBE .............................................. 43
11. Operation Control ............................................. 47
11.1 Cooling Operation ....................................... 47
11.2 Heating Operation ...................................... 48
11.3 Outdoor Quiet Cooling Operation
Control ........................................................ 48
12. Simultaneous Operation Control .................... 50
13. Protection Control ............................................ 51
13.1 Freeze Prevention control (Cool) ............... 51
13.2 Dew Prevention control (Cool) ................... 51
13.3 Electronic Parts Temperature Rise
Protection 1 (Cool) ......................................51
13.4 Electronic Parts Temperature Rise
Protection 2 (Cool) ......................................51
13.5 Cooling overload control (Cool) ..................52
13.6 Heating overload control (Heat) .................52
13.7 Extreme Low Temperature Compressor
low pressure protection control (Heat) .......52
13.8 Deice Control ..............................................53
13.9 Time Delay Safety Control
(Restart Control) .........................................53
13.10 30 seconds Force Operation ......................53
13.11 Total Current Control ..................................53
13.12 IPM (power transistor) Protection
Control ........................................................53
13.13 Compressor Protection Control
(Gas leak detection control 1) ....................53
13.14 Compressor Protection Control
(Gas leak detection control 2) ....................54
13.15 Valve close detection control ......................54
13.16 Compressor discharge high pressure
protection control ........................................54
14. Servicing Mode .................................................55
14.1 CU-3E23SBE ..............................................55
14.2 CU-2E12SBE, CU-2E15SBE &
CU-2E18SBE ..............................................57
15. Troubleshooting Guide ....................................58
15.1 Self Diagnosis Function (CU-2E12SBE,
CU-2E15SBE and CU-2E18SBE) ..............58
15.2 Self Diagnosis Function (CU-3E23SBE) ....60
16. Disassembly and Assembly Instructions ......63
16.1 Outdoor Unit Removal Procedure
(CU-2E12SBE CU-2E15SBE
CU-2E18SBE) ............................................63
16.2 Outdoor Unit Removal Procedure
(CU-3E23SBE) ...........................................64
17. Technical Data ..................................................67
17.1 Cool Mode Performance Data ....................67
17.2 Heat Mode Performance Data ................. 106
18. Service Data ................................................... 135
18.1 Operation Characteristics
(CU-2E12SBE) ........................................ 135
18.2 Operation Characteristics
(CU-2E15SBE) ........................................ 145
18.3 Operation Characteristics
(CU-2E18SBE) ........................................ 155
18.4 Operation Characteristics
(CU-3E23SBE) ........................................ 167
19. Exploded View and Replacement Parts
List .................................................................. 177
19.1 CU-2E12SBE CU-2E15SBE
CU-2E18SBE ........................................... 177
19.2 CU-3E23SBE ........................................... 180

Panasonic CU-2E18SBE Specifications

General

Brand	Panasonic
Model	CU-2E18SBE
Category	Air Conditioner
Language	English