Sanyo CHDX07263, CHDX09663, CHDXR09663, CHDXR07263* - page 116

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5 - 7

W-2WAY ECO-i SYSTEM

Trouble Diagnosis

4. W-2WAY ECO-i Alarm Codes

With type 96, the INV compressor is compressor 1, and the constant-speed compressor is compressor 2.With type 72, the INV compressor is compressor 1.

Alarm code Alarm meaning Page

E06 Outdoor unit failed to receive serial communication signals from indoor unit. 5-9

E12 Automatic address setting start is prohibited. 5-9

E15 Automatic address setting alarm (too few units) 5-9

E16 Automatic address setting alarm (too many units) 5-10

E20 No indoor units at automatic address setting. 5-10

E24 Outdoor unit (INV) failed to receive communications from another outdoor

unit (constant-speed).

5-10

E25 Outdoor unit address setting failure (duplication) 5-11

E26 Mismatch in outdoor unit quantity 5-11

E29 Outdoor unit failed to receive communication from outdoor unit (main) 5-11

F04 Compressor 1 discharge temperature sensor trouble 5-12

F05 Compressor 2 discharge temperature sensor trouble 5-12

F06 Gas temperature sensor trouble at outdoor heat exchanger 1 (In) 5-13

F07 Liquid temperature sensor trouble at outdoor heat exchanger 1 (Out) 5-13

F08 Outdoor air temperature sensor trouble 5-14

F12 Compressor intake temperature sensor trouble 5-14

F16 High-pressure sensor trouble 5-15

F17 Low-pressure sensor trouble 5-16

F23 Gas temperature sensor trouble at outdoor heat exchanger 2 (In) 5-13

F24 Liquid temperature sensor trouble at outdoor heat exchanger 2 (Out) 5-13

F31 Outdoor unit non-volatile memory (EEPROM) trouble 5-16

H11 Constant speed compressor 2 overcurrent alarm 5-17

H12 Constant speed compressor 2 lock current alarm 5-17

H03 Compressor 1 CT sensor disconnected or short-circuit 5-18

H06 Low-pressure switch activated 5-19

H07 No-oil alarm 5-20

H08 Compressor 1 oil detection sensor (connection) trouble 5-21

H13 Compressor 2 CT sensor disconnected or short-circuit 5-18

H15 Compressor 2 discharge temperature sensor disconnected 5-18

H27 Compressor 2 oil detection sensor (connection) trouble 5-21

H31 HIC trouble alarm 5-21

L04 Outdoor system address duplication 5-22

L10 Outdoor unit capacity not set 5-22

L17 Outdoor unit model mismatch 5-22

L18 4-way valve operation failure 5-22

Contents

Main 2-WAY ECO-i MULTI SYSTEM Outdoor Units 85464849280000 Refrigerant R410A is used in the outdoor units. * Salt-Air Damage Resistant Specifications. CHDX07263 CHDX09663 Please Read Before Starting In Case of Improper Installation When Wiring i When Installing When Servicing Check of Density Limit ii CONTENTS Section 1: CONTROL FUNCTIONS .......................................... 1-1 Section 2: OUTDOOR UNIT REPAIR PROCEDURES ........................... 2-1 Section 5: TROUBLE DIAGNOSIS .......................................... 5-1 1. CONTROL FUNCTIONS 1. Introduction 2. Selecting an Outdoor Unit for Operation 2-1. Outdoor Unit Operating Rules 2-2. Delayed Start of Outdoor Units 2-3. Outdoor Unit Stop Rules 3-1. Compressors Mounted in the Outdoor Units [CHDX07263, CHDX09663] 3-2. Compressor Selection Rules 3-3. Compressor Capacity Control 3-4. Inverter Compressor Capacity Control 3-5. Forced Compressor Stop 3-6. Roadmap Control Page Page - 4-1. 4-way Valve Adjustment Control 4-2. System Refrigerant Oil Recovery Control 4-3. Defrost Control 1 - 11 Page Page 5. Other Controls 5-1. Oil Control 6. Operation of Solenoid Valves 6-1. Refrigerant Control Valve [RCV] 6-2. Refrigerant Balance Valve [RBV] Gas Purge Valve 6. Operation of Solenoid Valves 6-3. Recovery Valve (ORVR) 6-4. Bypass Valve (BPV) 7-1. Types of Electronic Thermostatic Expansion Valves 7-2. Power Initialization 7. Outdoor Unit Electronic Thermostatic Expansion Valves [MOV1, MOV2 & MOV4] 7-4. SC Circuit Electronic Control Valve [MOV4] 8. Outdoor Fan Control 8-1. Fan mode 8-3. Fixed Initial Fan Mode 8-4. Operation after Fixed Initial Fan Mode 8-2. Outdoor Fan Min. Fan Mode and Max. Fan Mode 9. Demand Control 10. Indoor Unit Control of the Electronic Control Valve 10-1. Normal Control (1) Cooling operation (2) Heating operation (B) Type D 10. Indoor Unit Control of the Electronic Control Valve 10-2. Special Control 1 - 22 11. Rap Valve Kit Control CoolingHeating 1 - 23 12. Indoor Unit Refrigerant Oil Self Recovery Control 13. Discharge Temperature <Alarm Information> 14. Current Protection Control Functions 15. Pressure Sensor Failure 16. Backup Operation <Field Application Functions> Backup Operation 16-1. Automatic Backup Operation 16-2. Manual Backup Page 17. Service Maintenance Functions 17-2. Anti-slime countermeasures ... EEPROM setting 0C (set only on the main unit) 17-3. Delayed Start for Each System: Outdoor EEPROM 3E (set only on outdoor unit No. 1) 17-4. Automatic Backup: Outdoor EEPROM 48 (set only on outdoor unit No. 1) 17-1. Outdoor Unit Noise Countermeasure: EEPROM 05 (set at each outdoor unit) 17. Service Maintenance Functions 17-6. High Static Pressure Mode: Outdoor EEPROM 8F (set at each outdoor unit) 17-8. Demand Value Setting: Outdoor EEPROM 1A, 1B (set at outdoor units that include CCU functions) 18. Other Functions 18-1. Snowfall Sensor Functions: Outdoor EEPROM 04 18-2. Function for Automatic Judgment of Insufficient Refrigerant Gas and Overcharge Page Page 2. OUTDOOR UNIT REPAIR PROCEDURES 1. Removing Panels Procedures: 2. Removing Electrical Component Box and Duct A Page 3. Discharging Compressor Oil 3-1. Discharging Oil from Oil Separator 3-2. Discharging Oil in Compressor 3-3. Checking the Oil 4-1. Automatic Backup 4-2. Manual Backup Page Page The following equipment and tools are required: 5-1. Refrigerant Recovery Procedures (from outdoor unit) 2 - 10 5-2. Refrigerant Recovery Procedures (Indoor Unit) CAUTION 5-2-1. Cooling operation (for all units) 5-2-2. Refrigerant recovery procedures (1) (using indoor unit ball valve) 5-2-3. Refrigerant recovery procedures (2): Indoor unit with no ball valve equipped 5-3. Recovery of Refrigerant from Entire System 6. Checking for Leakage After Repair 6-1. Pressure Check for Leakage of Outdoor Unit 6-2. Checking for Leakage in Refrigerant Tubing Between Indoor and Outdoor Units 7. Evacuating System 7-1. Evacuating Repaired Outdoor Unit 7-2. Evacuating Refrigerant Tubing Between Indoor and Outdoor Units 8-1. If Refrigerant Has Already Been Charged to Outdoor Unit Page 8-2. If Outdoor Unit Has Not Been Charged with Refrigerant 8-3. Charging Additional Compressor Oil (after replacing compressor) 9-1. If Remote Controller (RCS-TM80BG) is Used for Maintenance of Outdoor Unit 9-2. If Remote Controller is Not Available for maintenance of Outdoor Unit Page 10-1. Compressor Trouble Diagnosis and Check Methods 10-2. Replacing the Compressor(s) 10-2-1. Replacing only the failed compressor 10-2-2. Replacing all compressors in a failed unit 10-2-3. Replacing all compressors in a system 10-2-4. Dry core cleaning (A) If a ball valve is installed on the outdoor unit (B) If a ball valve is not installed on the outdoor unit 10-3. Removing and Installing Compressors 10-3-1. Replacing compressors (A) Replacing the inverter compressor (Compressor 1 on remote controller alarm display) Installation Removal (B) Replacing the constant-speed compressor 1 (Compressor 2 on remote controller alarm display) Installation Page Page 11. High and Low Pressure Sensors 11-1. Removing the High and Low Pressure Sensor 11-2. Installing the High and Low Pressure Sensors 12. Replacing 4-way Valve 12-1. When the replacement is available from the right side of the unit 12. Replacing 4-way Valve 12-2. When the replacement is not available from the right side of the unit Page 3. OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER 1. Overview OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER (RCS-TM80BG) for W-2WAY ECO-i 2. Functions Page LED N Display (functions) Use the temperature setting and buttons to change the item code. <Sample displays> Page 4. Monitoring Operations 4. Monitoring Operations N 3 - 10 Display of unit No. 1 (main unit) NOTE 5. Outdoor Unit Alarm History Monitor 6. Mode Settings 6. Mode Settings Page Page 1. Simple Settings Function 1. Simple Settings Function List of Simple Setting Items NOTE Page List of Detailed Setting Items Page Page Page Simple setting items Filter sign ON times for each model NOTE Page Page Page (Continued) (Continued from previous page) Page Page Page 4 - 18 5. TROUBLE DIAGNOSIS 1. Contents of Remote Controller Switch Alarm Display Continued 5 - 2 5 - 3 1. Contents of Remote Controller Switch Alarm Display 2. Outdoor Unit Control Panel LED Display ( : ON : Blinking : OFF) <Check procedure> 5 - 6 Sensor Temperature Relationship Table Page Page S004 S005 CN001 Page Page Page Page Page Page Page 4. W-2WAY ECO-i Alarm Codes Page Page HIC +HIC - Page Page Page (+) () CAUTION Blinking inspection display (1) (Automatic backup) 5. Blinking Inspection Display on the Remote Controller Blinking inspection display (2) (compressor magnet SW seizing detection) 6. Inspection of Parts 7. Test Pin 8. Thermister Characteristics Curve 5 - 30 8-1. Room temp.sensor Temperature (C) Temperature (C) Temperature (C) 8. Thermister Characteristics Curve Temperature (C) 8-4. Compressor discharge gas temp. sensor Discharge gas temp. sensor Temperature (C) Temperature (C)