Name: Gree GUD50T/A-T
Brand: Gree
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GREE U-Match 5 SERIES UNIT SERVICE MANUAL

Note: 1 Ton =12000Btu/h = 3.517kW

If one outdoor unit is to be connected with multiple indoor units, the indoor units must have the same cooling capacity and be of the

same type.

1.1.2 List of IDUs

Model

Rated

Cooling/

Hating

Capacity (kw)

Power Supply

Finished

Product Code

Appearance

V/Ph/Hz

Cassette

Type

GUD35T/A-T

220-240V 1N~50Hz

208-230V 1N~60Hz

GUD50T/A-T

5.0/5.5

ET010N1540

GUD71T/A-T

7.0/8.0

ET010N1420

GUD85T/A-T

8.5/8.8

ET010N1430

GUD100T/A-T

10.0/12.0

ET010N1440

GUD125T/A-T

12.1/13.5

ET010N1450

GUD140T/A-T

13.4/15.5

ET010N1460

GUD160T/A-T

14.5/17.0

ET010N1470

Duct Type

GUD35P/A-T

3.5/4.0

220-240V 1N~50Hz

208-230V 1N~60Hz

CF022N1650

GUD50P/A-T

5.0/5.5

CF022N1630

GUD71P/A-T

7.0/8.0

CF022N1620

GUD85P/A-T

8.5/8.8

CF022N1610

Default Chapter3
- Table of Contents3
Safety Notice on Maintenance6
Safety Notice on Operation7
Product Introduction8
Lists of Units8
- List of Odus8
- List of Idus9
Electrical Parameters13
Control14
Operation Mode14
- Cooling Mode14
- Heating Mode15
Control Mode15
- Based Control15
- Special Control16
- Protection Control17
Functions17
- Setting of Filter Cleaning Reminder17
- Low-Temperature Drying Function18
- Child-Lock Function18
- Memory Function18
- Door Control Function18
- Switch between Fahrenheit and Degree Celsius19
- Inquiry of Ambient Temperature19
- Inquiry of Historical Malfunction19
- Debugging Function19
- Connect to Interface of Centralized Control22
Troubleshooting24
Wiring Diagrams24
- Wiring Diagrams of Odus24
- Wiring Diagrams of Idus28
PCB Layout31
- Interface31
- IPM,PFC Testing Method42
Error Code44
Troubleshooting46
- E1‖ Compressor High Pressure Protection46
- E2‖ Indoor Anti-Freezing Protection47
- E3‖ Compressor Low-Pressure Protection, Refrigerant Shortage Protection, Refrigerant Recovery Mode48
- E4‖ Compressor Air Discharge High-Temperature Protection49
- E6‖ Communication Error50
- E8‖ Indoor Fan Error51
- E9‖ Water Overflow Protection52
- F0‖ Indoor Ambient Temperature Sensor Error53
- F1‖ Evaporator Temperature Sensor Error54
- F2‖ Condenser Temperature Sensor Error55
- F3‖ Outdoor Ambient Temperature Sensor Error56
- F4‖ Discharge Temperature Sensor Error57
- F5‖ Wired Control Temperature Sensor Error58
- C5‖ IDU Jumper Cap Error59
- EE‖ IDU or ODU Memory Chip Error59
- PF‖ Electric Box Sensor Error60
- H3‖ Compressor Overload Protection61
- H4‖ Overload61
- H5‖ IPM Protection62
- H6‖ DC Fan Error63
- H7‖ Driver Out-Of-Step Protection64
- HC‖ PFC Protection65
- Lp‖ IDU and ODU Unmatched67
- U7‖ 4-Way Valve Switch-Over Error68
- P0‖ Driver Reset Protection68
- P5‖ Over-Current Protection69
- P6‖ Master Control and Driver Communication Error70
- P7‖ Driver Module Sensor Error71
- P8‖ Driver Module High Temperature Protection72
- PA‖ AC Current Protection72
- Pc‖ Driver Current Error73
- Pd‖ Sensor Connection Protection74
- PL‖ Bus Low-Voltage Protection74
- PH‖ Bus High-Voltage Protection75
- Ee‖ Drive Memory Chip Error76
- C4‖ ODU Jumper Cap Error77
- EL‖ Emergency Stop (Fire Alarm)78
Failures Not Caused by Errors78
Maintenance80
System Diagram80
Connection Pipe Vacuum Pumping80
Refrigerant Charging81
Maintenance of Major Components83
Removal of Major Components83
- Removal of ODU Major Components83
- Removal of IDU Major Components119
Explosive View and Lists of Parts130
- ODU Explosive View and Lists of Parts130
- IDU Explosive View and Lists of Parts151
Appendices185
Resistance/Temperature Lists of Temperature Sensors185
- Voltage List of 15 Kω Temperature Sensors (Including ODU and IDU Temperature Sensors)185
- Voltage List of 20 Kω Pipeline Temperature Sensors (Including Temperature Sensors for Defroster, IDU and ODU Pipes)187
- Voltage List of 50 Kω Discharge Temperature Sensors (Including Discharge Air Temperature Sensor)190
Temperature/Pressure List of Refrigerant192
Refrigerant Notice/Concentration193
Operation Tools194

Gree GUD50T/A-T Service Manual

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Brand	Gree
Model	GUD50T/A-T
Category	Air Conditioner
Language	English