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Panasonic CU-5E36QBU service manual Table Of Contents

Models: CU-5E36QBU

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TABLE OF CONTENTS

			PAGE
1.	Safety Precautions		3
2.	Specifications		5
3.	Dimensions		9
4.	Refrigeration Cycle Diagram		10
5.	Block Diagram		11
6.	Wiring Connection Diagram		12
7.	Electronic Circuit Diagram		13
8.	Printed Circuit Board		14
8.1		Main Printed Circuit Board	14
8.2		Noise Filter Printed Circuit Board	15
8.3		Display Printed Circuit Board	15
9.	Installation Information		16
9.1		Check Points	16
10.	Installation Instruction		17
10.1		Select The Best Location	17
10.2		Install The Outdoor Unit	18
10.3		Connect The Piping	18
10.4		Evacuation Of The Equipment	19

10.5Connect The Cable To The Outdoor

		Unit	20
10.6		Heat Insulation	20
10.7		Disposal Of Outdoor Unit Drain Water	21
11.	Operation Control		22
11.1		Cooling Operation	22
11.2		Heating Operation	23
12.	Simultaneous Operation Control		24
13.	Protection Control		25
13.1		Freeze Prevention control (Cool)	25
13.2		Dew Prevention control (Cool)	25

13.3Electronic Parts Temperature Rise

Protection 1 (Cool)

......................................25

13.4Electronic Parts Temperature Rise

	Protection 2 (Cool)	25
13.5	Cooling overload control (Cool)	26
13.6	Heating overload control (Heat)	26

13.7Extreme Low Temperature Compressor

	low pressure protection control (Heat)	26
13.8	Deice Control	27
13.9	Time Delay Safety Control
	(Restart Control)	27
13.10	30 seconds Force Operation	27
13.11	Total Current Control	27
13.12	IPM (power transistor) Protection
	Control	27
13.13	Compressor Protection Control
	(Gas leak detection control 1)	28
13.14	Compressor Protection Control
	(Gas leak detection control 2)	28
13.15	Valve close detection control	28
13.16	Compressor discharge high pressure
	protection control	28
14. Servicing Mode		29

			PAGE
15.	Troubleshooting Guide		31
15.1		Self Diagnosis Function	31
16.	Disassembly and Assembly Instructions		34
16.1		Outdoor Unit Removal Procedure	34
17.	Technical Data		37
17.1		Operation Characteristics	37
18.	Exploded View and Replacement Parts
	List	.....................................................................	69

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Panasonic CU-5E36QBU service manual Table Of Contents

Contents

PRECAUTION OF LOW TEMPERATURE Air Conditioner Outdoor Unit CU-5E36QBUDestination U.S.A Canada Order No: PAPAMY1312037CETABLE OF CONTENTS 1. Safety Precautions 18.For R410A models, when connecting the piping, do not use any existing R22 pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle piping, and possibly result in explosion and injury. Use only R410A materials Unit 2. SpecificationsItem OUTDOOR UNITOUTDOOR UNIT ItemUnit Dry Bulb∙Multi Split Combination Possibility ∙Outdoor Unit : CU-5E36QBU 3. Dimensions 4. Refrigeration Cycle Diagram 5. Block Diagram Resistance of Compressor Windings WiringRECTIFICATION CIRCUIT SWITCHING POWER SUPPLY CIRCUIT7. Electronic Circuit Diagram 8. Printed Circuit Board 8.1Main Printed Circuit Board8.2Noise Filter Printed Circuit Board 8.3Display Printed Circuit Board9. Installation Information 9.1Check Points10. Installation Instruction 10.1 Select The Best LocationOutdoor Unit Installation Guidelines 10.2 Install The Outdoor Unit10.3 Connect The Piping Gas Leak Checking10.4 Evacuation Of The Equipment CUTTING AND FLARING THE PIPING10.5Connect The Cable To The Outdoor Unit 10.6Heat Insulation10.7Disposal Of Outdoor Unit Drain Water 11.1 Cooling Operation 11.1.3Cooling Powerful Operation11. Operation Control 11.1.1Outdoor fan control11.2.1Outdoor fan control 11.2.3Powerful Operation11.2 Heating Operation 11.2.2Heating Room Temp Sampling Control12. Simultaneous Operation Control 13.2 Dew Prevention control Cool 13. Protection Control13.1 Freeze Prevention control Cool 13.5 Cooling overload control Cool 13.6 Heating overload control Heat13.8 Deice Control 13.9 Time Delay Safety Control Restart Control13.12 IPM power transistor Protection Control 13.10 30 seconds Force Operation13.15 Valve close detection control 14.1.2Test Run Operation 14. Servicing Mode14.1.1Pump down operation SW1 14.1.5Mode priority function 14.1.3Wiring Error Check14.1.4Power Save Mode 14.1.6Cooling only function15. Troubleshooting Guide 15.1 Self Diagnosis FunctionPage Page 16.1.1Removing the Cabinet Top Plate 16. Disassembly and Assembly Instructions16.1 Outdoor Unit Removal Procedure Fig.4.Remove the particular plate remove the 8 screws 16.1.3Removing the Cabinet Front Plate3.Remove the particular plate remove the 3 screws Fig.16.1.4Removing the Control P.C. Board 16.1.5Removing the Propeller Fan and Fan Motor∙Cooling Characteristic 17. Technical Data17.1 Operation Characteristics 17.1.1One Indoor Unit Operation∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60HzPiping Length: 7.5m 24.6 ft 230V 60Hz 17.1.2Two Indoor Unit Operation∙Cooling Characteristic ∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length 7.5m 24.6 ft 230V 60HzPiping Length: 7.5m 24.6 ft 230V 60Hz 17.1.3Three Indoor Unit Operation∙Cooling Characteristic ∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Cooling Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60Hz∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60HzPiping Length: 7.5m 24.6 ft 230V 60Hz 17.1.4Four Indoor Unit Operation∙Cooling Characteristic ∙Heating Characteristic Piping Length: 7.5m 24.6 ft 230V 60HzPiping Length: 7.5m 24.6 ft 230V 60Hz 17.1.5Five Indoor Unit Operation∙Cooling Characteristic ∙Heating Characteristic Piping Length 7.5m 24.6 ft 230V 60Hz18. Exploded View and Replacement Parts List DESCRIPTION & NAME SAFETYREF.NO CU-5E36QBUREF.NO PAPAMY Printed in Malaysia FY1213-0SAFETY DESCRIPTION & NAME