Gree FLEXX Series Manuale utente

DC INVERTER HEAT PUMP

CONDENSING UNIT SERVICE MANUAL

(GC202006-I)

Capacity: 24kBtu/h~60kBtu/h

Rate Frequency: 60Hz

Operation Range:

Cooling: 5°F(-15°C)~129.2° F(54° C )

Heating: -22°F (-30°C)~75.2°F (24°C)

FLEXX

Foreword

Thank you for choosing Gree air conditioner/heat pumps. In order to correctly install and use our units, and

for the satisfactory operation effect, please read this manual carefully.

This manual specifies safe operation requirements from perspectives of product introduction, control,

troubleshooting and maintenance, as well as basic principles and implementation methods. Professional

operators must abide by relevant national (local) safety requirements and technical specifications set forth in

this manual during operations; otherwise, the air conditioning system may fail or be damaged, and personnel

safety accident may also occur.

Safety Notice

Before using the air conditioner, please first read the instruction manual.

Before installing the air conditioner, please first read the instruction manual.

Before repairing the air conditioner, please first read the technical service manual.

CONTENTS

1 Product Introduction ......................................................................................................3

1.1 Lists of Units .......................................................................................................................... 3

1.2 Electrical Parameters ............................................................................................................. 5

2 Control.............................................................................................................................6

2.1 Operation Mode ..................................................................................................................... 6

2.2 Control Mode ......................................................................................................................... 8

2.3 Functions ............................................................................................................................. 10

3 Troubleshooting............................................................................................................14

3.1 Wiring Diagrams .................................................................................................................. 14

3.2 PCB Layout .......................................................................................................................... 17

3.3 Error Code ........................................................................................................................... 25

3.4 Troubleshooting ................................................................................................................... 26

3.5 Failures Not Caused by Errors ............................................................................................. 53

4 Maintenance..................................................................................................................55

4.1 System Diagram .................................................................................................................. 55

4.2 Connection Pipe Vacuum Pumping ...................................................................................... 55

4.3 Refrigerant Charging ............................................................................................................ 57

4.4 Maintenance of Major Components ...................................................................................... 59

4.5 Removal of Major Components ............................................................................................ 69

4.6 Explosive View and Lists of Parts ....................................................................................... 104

Appendices ....................................................................................................................110

1 Resistance/Temperature Lists of Temperature Sensors .........................................110

1.1 Voltage List of 15 KΩ Temperature Sensors ....................................................................... 110

1.2 Voltage List of 20 KΩ Pipeline Temperature Sensors ......................................................... 112

1.3 Voltage List of 50 KΩ Discharge Temperature Sensors ...................................................... 114

2 Temperature/Pressure List of Refrigerant ................................................................117

3 Operation Tools ..........................................................................................................117

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

Safety Notice on Maintenance

PROHIBITED：

(1) Do not pierce or burn.

(2) Please note that refrigerant may be odorless.

(3) The appliance shall be stored in a room without continuously operating ignition sources (For example:

open flames, an operating gas appliance or an operating electric heater).

(4) Indoor unit adopts special joints that can’t be detached. The installation method is the same with the

common joints. However, because the joint can’t be detached, if it is badly connected and causes leakage,

it needs to be cut and replaced by a new one through welding.

(5) Using unsuitable parts or tools may lead to electric shock or fire hazard.

(6) If refrigerant leaks during maintenance, please ventilate the room immediately. Heavy leakage may lead to

breathing difficulty, severe injury or death.

(7) Disconnect power before disassembling the appliance for maintenance.

(8) The appliance should be maintained and cared by authorized technical personnel with necessary

qualifications.

WARNING:

(1) If the working place is more than 2m's high, please wear a safety helmet, gloves and a safety belt.

(2) Never mix any other substances except the specified refrigerant into the refrigerant circuit.

(3) When re-locating the appliance, check whether the new location is strong enough to withstand the weight

of the appliance.

(4) If there is refrigerant leak, please fix the leak before charging in the refrigerant. After refrigerant is charged,

check for refrigerant leaks. If you cannot spot the leak, stop the maintenance work. Please evacuate the

system and close the service valve to prevent refrigerant leaking into the room.

(5) Prepare suitable tools and protectors.

(6) If you need to carry out maintenance or check the electric circuit without cutting off the power, please be

careful not to touch the electrical parts.

NOTICE:

(1) If the appliance is maintained at a humid place, it should be grounded to avoid electric shock.

(2) Never repair the unit with wet hands. Operating the unit with wet hands may lead to electric shock.

(3) If the unit is not correctly grounded, please check and fix it.

(4) Before cleaning the unit, please disconnect power to prevent the inner fan from starting up and running at

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

high speed; Otherwise personal injury may occur.

(5) Measure the insulation resistance after maintenance. The resistance must be 1M or higher. Bad insulation

may lead to electric shock.

(6) Welding and cutting work must be done in a well-ventilated place.

(7) Gas appliances, heaters and other fire sources should be kept away from the installation and maintenance

site.

(8) Maintenance should be done according to suggestions of the manufacturer.

(9) Maintenance should be done only after the refrigerant is completely reclaimed from the unit.

OBSERVED：

(1) After the maintenance work is done, check the drainage of indoor unit.

(2) Do not tilt the unit, otherwise, water may spill out from the unit and make the floor and furniture wet.

(3) Disassembly of the unit, handling of the refrigerant, oil and accessories should all be done according to

applicable local rules and regulations.

Safety Notice on Operation

PROHIBITED:

(1) Never try to modify the unit, otherwise, it may cause electric shock, overheat or fire hazard.

(2) If the power cord or conducting wires are scratched, please replace them.

(3) Never use connected or extended power cord or share the power socket with other appliances.

(4) Prepare a specialized power circuit for the appliance.

WARNING:

(1) If the power plug is dirty, please clean it before inserting it to the power socket. If the power plug is loose,

please tighten it up.

(2) Do not damage the power cord. A damaged or refitted power cord may lead to electric shock or fire hazard.

(3) Check frequently whether the appliance is in good condition.

NOTICE:

(1) After changing the batteries of remote control, please discard them to avoid being swallowed by children.

(2) When the unit is working, do not remove the fan cover.

(3) Do not use organic solvents to wipe the controller operating panel.

(4) Before cleaning the unit, cut off the power supply.

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

1 Product Introduction

1.1 Lists of Units

1.1.1 List of Outdoor Units

Model

Power Supply

Finished Product Code

Appearance

V/Ph/Hz

FLEXX36HP230V1AO

208/230V-1Ph-60Hz

CF090W1530

FLEXX60HP230V1AO

208/230V-1Ph-60Hz

CF090W1820

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

1.1.2 List of Indoor Units

Model

Cooling/Heating

Capacity (Btu/h)

Power Supply

Finished

Product Code

Appearance

V/Ph/Hz

Airhandler

FLEXX24HP230V1AH

24000/24000

208/230V-1Ph-60Hz

EH010N0040

Airhandler

FLEXX36HP230V1AH

36000/36000

208/230V-1Ph-60Hz

EM116N0890

Airhandler

FLEXX48HP230V1AH

48000/48000

208/230V-1Ph-60Hz

EH010N0050

Airhandler

FLEXX60HP230V1AH

54000/54000

208/230V-1Ph-60Hz

EH010N0031

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

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

1.2 Electrical Parameters

Model

Power supply

Circuit breaker capacity

V/Ph/Hz

FLEXX36HP230V1AO

208/230V-1Ph-60Hz

FLEXX60HP230V1AO

208/230V-1Ph-60Hz

Model

Power Supply

Fuse Capacity

Circuit Breaker Capacity

V/Ph/Hz

FLEXX24HP230V1AH

208/230V-1Ph-60Hz

3.15

FLEXX36HP230V1AH

208/230V-1Ph-60Hz

3.15

FLEXX48HP230V1AH

208/230V-1Ph-60Hz

3.15

FLEXX60HP230V1AH

208/230V-1Ph-60Hz

3.15

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

2 Control

2.1 Operation Mode

2.1.1 Cooling Mode

GREE DC INVERTER HEAT PUMP CONDENSING UNIT

2.1.2 Heating Mode

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