General Climate GC/CU-S24HR, GC/CU-S30HR, GC/CU-S36HR, GC-S24HR, CU-S24HR Service Manual

www.generalclimate.com Wall-Mounted Split Type

Service manual
Room Air Conditioner

Split Wall-Mounted Type

GC/CU-S24HR
GC/CU-S30HR
GC/CU-S36HR

www.generalclimate.com Wall-Mounted Split Type

Content

1. Precaution 1

1.1 Safety Precaution 1

1.2 Warning 1

2. Function 3

3. Dimension 5

3.1 Indoor unit 5

3.2 Outdoor unit 6

4. Specification 7

5. Refrigerant cycle diagram 8

6. Operation limits 9

6.1 Cooling operation 9

6.2 Heating operation 9

7. Schematic diagram and Wiring diagram 9

7.1 Schematic diagram 10

7.2 Wiring diagram 11

8. Installation details 13

8.1 Wrench torque sheet for installation 13

8.2 Connecting the cables 13

8.3 Pipe length and the elevation 13

8.4 Air purging of the piping and indoor unit 14

8.5 Pumping down (Re-installation) 15

8.6 Re-air purging (Re-installation) 16

8.7 Balance refrigerant of the 2-way, 3-way valves 17

8.8 Evacuation 18

8.9 Gas charging 19

9. Capacity table 20

9.1 GC/GU-S24HR 20

9.2 GC/GU-S30HR 21

9.3 GC/GU-S36HR 22

10. Electronic function 23

10.1 Electronic control working environment 23

10.2 Proper symbols and their meaning 23

10.3 Function 24

10.4 Protection 24

10.5 Fan only mode 24

10.6 Cooling mode 24

10.7 Dehumidifying mode 25

10.8 Heating mode 25

10.9 Defrosting mode(available for heating mode) 27

10.10 Auto mode 28

10.11 Force cooling function 28

10.12 Sleep mode 28

www.generalclimate.com Wall-Mounted Split Type

10.13 Auto restart function 29

11. Model and Parameters 30

12. Troubleshooting 31

12.1 Display board 31

12.2 Troubleshooting 32

12.3 Diagnostic chart 33

12.4 Resetting phenomenon often occurs during operation. 34

12.5 Operation lamp flashes and Timer lamp off. 34

12.6 Operation lamp flashes and Timer lamp on. 34

12.7 Operation lamp off and Timer lamp flashes 35

12.8 Operation lamp on and Timer lamp flashes 35

12.9 Operation lamp flashes, Timer lamp flashes . 35

13. Characteristic of temperature sensor 36

www.generalclimate.com 1 Wall-Mounted Split Type

1. Precaution

1.1 Safety Precaution

n To prevent injury to the user or other people and property damage, the following instructions must be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage.
n Before service unit, be sure to read this service manual at first.

1.2 Warning

Ø Installation

n Do not use a defective or underrated circuit breaker.

Use this appliance on a dedicated circuit.

There is risk of fire or electric shock.

n For electrical work, contact the dealer, seller, a

qualified electrician, or an Authorized service center.

Do not disassemble or repair the product, there is risk of
fire or electric shock.

n Always ground the product.

There is risk of fire or electric shock.

n Install the panel and the cover of control box

securely.

There is risk of fire of electric shock.

n Always install a dedicated circuit and breaker.

Improper wiring or installation may cause fore or electric
shock.

n Use the correctly rated breaker of fuse.

There is risk of fire or electric shock.

n Do not modify or extend the power cable.

There is risk of fire or electric shock.

n Do not install, remove, or reinstall the unit by

yourself (customer).

There is risk of fire, electric shock, explosion, or injury.

n Be caution when unpacking and installing the

product.

Sharp edges could cause injury, be especially careful of
the case edges and the fins on the condenser and
evaporator.

n For installation, always contact the dealer or an

Authorized service center.

There is risk of fire, electric shock, explosion, or injury.

n Do not install the product on a defective installation

stand.

It may cause injury, accident, or damage to the product.

n Be sure the installation area does not deteriorate

with age.

If the base collapses, the air conditioner could fall with it,
causing property damage, product failure, and personal
injury.

n Do not let the air conditioner run for a long time

when the humidity is very high and a door or
windows is left open.

Moisture may condense and wet or damage furniture.

n Take care to ensure that power cable could not be

pulled out or damaged during operation.

There is risk of fire or electric shock.

n Do not place anything on the power cable.

There is risk of fire or electric shock.

n Do not plug or unplug the power supply plug during

operation.

There is risk of fire or electric shock.

n Do not touch (operation) the product with wet hands.

There is risk of fire or electric shock.

n Do not place a heater or other appliance near the

power cable.

There is risk of fire and electric shock.

n Do not allow water to run into electric parts.

It may cause fire, failure of the product, or electric shock.

n Do not store or use flammable gas or combustible

near the product.

There is risk of fire or failure of product.

n Do not use the product in a tightly closed space for a

long time.

Oxygen deficiency could occur.

n When flammable gas leaks, turn off the gas and

open a window for ventilation before turn the
product on.

Do not use the telephone or turn switches on or off.
There is risk of explosion or fire.

n If strange sounds, or small or smoke comes from

product. Turn the breaker off or disconnect the
power supply cable.

There is risk of electric shock or fire.

n Stop operation and close the window in storm or

hurricane. If possible, remove the product from the
window before the hurricane arrives.

www.generalclimate.com 2 Wall-Mounted Split Type

There is risk of property damage, failure of product, or
electric shock.

n Do not open the inlet grill of the product during

operation. (Do not touch the electrostatic filter, if the
unit is so equipped.)

There is risk of physical injury, electric shock, or product
failure.

n When the product is soaked (flooded or submerged),

contact an Authorized service center.

There is risk of fire or electric shock.

n Be caution that water could not enter the product.

There is risk of fire, electric shock, or product damage.

n Ventilate the product from time to time when

operating it together with a stove, etc.

There is risk of fire or electric shock.

n Turn the main power off when cleaning or

maintaining the product.

There is risk of electric shock.

n When the product is not be used for a long time,

disconnect the power supply plug or turn off the
breaker.

There is risk of product damage or failure, or unintended
operation.

n Take care to ensure that nobody could step on or fall

onto the outdoor unit.

This could result in personal injury and product damage.

Ø CAUTION

n Always check for gas (refrigerant) leakage after

installation or repair of product.

Low refrigerant levels may cause failure of product.

n Install the drain hose to ensure that water is drained

away properly.

A bad connection may cause water leakage.

n Keep level even when installing the product.

To avoid vibration of water leakage.

n Do not install the product where the noise or hot air

from the outdoor unit could damage the
neighborhoods.

It may cause a problem for your neighbors.

n Use two or more people to lift and transport the

product.

Avoid personal injury.

n Do not install the product where it will be exposed to

sea wind (salt spray) directly.

It may cause corrosion on the product. Corrosion,
particularly on the condenser and evaporator fins, could
cause product malfunction or inefficient operation.

Ø Operational

n Do not expose the skin directly to cool air for long

periods of time. (Do not sit in the draft).

This could harm to your health.

n Do not use the product for special purposes, such

as preserving foods, works of art, etc. It is a
consumer air conditioner, not a precision refrigerant
system.

There is risk of damage or loss of property.

n Do not block the inlet or outlet of air flow.

It may cause product failure.

n Use a soft cloth to clean. Do not use harsh

detergents, solvents, etc.

There is risk of fire, electric shock, or damage to the
plastic parts of the product.

n Do not touch the metal parts of the product when

removing the air filter. They are very sharp.

There is risk of personal injury.

n Do not step on pr put anything on the product.

(outdoor units)

There is risk of personal injury and failure of product.

n Always insert the filter securely. Clean the filter

every two weeks or more often if necessary.

A dirty filter reduces the efficiency of the air conditioner
and could cause product malfunction or damage.

n Do not insert hands or other object through air inlet

or outlet while the product is operated.

There are sharp and moving parts that could cause
personal injury.

n Do not drink the water drained from the product.

It is not sanitary could cause serious health issues.

n Use a firm stool or ladder when cleaning or

maintaining the product.

Be careful and avoid personal injury.

n Replace the all batteries in the remote control with

new ones of the same type. Do not mix old and mew
batteries or different types of batteries.

There is risk of fire or explosion.

n Do not recharge or disassemble the batteries. Do not

dispose of batteries in a fire.

They may burn of explode.

n If the liquid from the batteries gets onto your skin or

clothes, wash it well with clean water. Do not use the
remote of the batteries have leaked.

The chemical in batteries could cause burns or other
health hazards.

www.generalclimate.com 3 Wall-Mounted Split Type

2. Function

T

he function will be

operate in any operation

Indoor unit

Operation ON/OFF by remote controller

Room temp

erature sensor.

Pipe temperature sensor.

Sensing by room temperature

Maintain the room temperature in accordance with the setting temperature.

Room temperature control

Indoor fan is delayed for 5 sec at the starting.

Starting temperature control

Restarting is for approx.

3

minutes..

Time Delay Safety control

High

, med, low, breeze.

Indoor fan speed control

Light up in the LED (LCD) for each operation mode.

The unit will decide the louver direction according to operation mode.

Two-direction air vane

The fan is turn to low speed

(cooling/heating).

The unit will be turn off after seven hours.

Sleep mode auto control

The function is usually used in rainy days in

springtime or damp areas.

Independent dehumidification

Operation indication Lamps (LED)

The louver can be

set at the desired position or swing up and

down automatically

Air flow Direction control

The unit can be change by the room temperature.

Auto mode

Easy clean panel

Flexible wiring connection

Defrost mode

Temp. Compensation

P

revent the cold wind at

the beginning of unit start.

Anti-cold function

Auto-restart function

Self-diag. function

www.generalclimate.com 4 Wall-Mounted Split Type

T

he unit can operate in cooling mode at low

ambient

temperature conditions.

The unit has

3 mins delay between

continuously

ON/OFF

operations

.

Outdoor unit

Power relay control

Low ambient kit

B

ird tail propeller fan makes the outdoor unit run more quietly.

Low noise air flow system

T

he hydrophilic fin can improve the heating efficiency at operation mode.

Hydrophilic aluminum fin

I

t is only operated in t

he heating operation mode except defrosting

operation

.

Discharge pipe temperature protect

Anti-rust cabinet

Valve protection cover

4 way valve control

Made from electrolytic zinc steel shee

t and anti

-

rust coated components.

I

t protects the valves and prevents water from dripping.

www.generalclimate.com 5 Wall-Mounted Split Type

3. Dimension

3.1 Indoor unit

Dimension
Mode

WHL

24K1080330222
30K1080330222
36K1250325230

www.generalclimate.com 6 Wall-Mounted Split Type

3.2 Outdoor unit

Dimension
Mode

WHDL1L2L3

24K845695335

560

360

735

30K845695335

560

360

735

36K895860302

560

360

735

www.generalclimate.com 7 Wall-Mounted Split Type

4. Specification

GC/GU-S24HRGC/GU-S30HRGC/GU-S36HR

Ph-V-Hz

1, 220-240V~,50Hz1, 220-240V~,50Hz

1, 220-240V~, 50Hz

Capacity Btu/h

2400028000

35000

Input W

27503200

4120

Rated current A

12,515

18,6

EER Btu/w.h

8.7, 2.68,8

8,5

Capacity Btu/h

2700030000

38000

Input W

27503100

4100

Rated current A

12,514,5

18,5

COP W/W

2,99,79,3

A

162032

A

5076150

Model

QP407PT24CZR34KH-PFJ-522

ZR47K3-PFJ-522

Type

RotaryScroll

SCROLL

Brand

LGCopeland

COPELAND

Capacity Btu/h

2340028800

39000

Input W

23172520

3510

Rated current(RLA) A

10,112,1

19,3

Locked rotor Amp(LRA) A

5476

114

Thermal protector

InternalInternal15HM1637

Capacitor uF

4550

60uF/≥400VAC

Refrigerant oil ml

65012421240

Model

YDK36-4GYDK36-4GYDK50-4E

Brand

WellingWellingWelling

Input W

65/63/6068/65/62

85/80/77

Capacitor uF

2μF/450V3

μ

F/450V3

Speed(hi/mi/lo) r/min

1050/950/8501150/1050/9501260/1150/990

m3/h

1050/950/8501150/1050/9501350/1200/1050

dB(A)

43/40/3747/44/41

49/46/42

Model

YDK53-6KYDK53-6KYDK100-6

Brand

WellingWellingWelling

Input W

130140169

Capacitor uF

3,53,55

Speed r/min

800800900

m3/h

250025003000

dB(A)

≤

56

≤

58

59

g

R22/1900R22/24502450

MPa

2,62,62,6

Liquid side/ Gas side mm

Ф

9.53/Ф16.0

Ф

9.53/Ф16.0

Φ

9.52/Φ16

Max. refrigerant pipe length m

202025

Max. difference in level m

101010

℃

17-3017-3017-30

℃

-7 - 45-7 - 45-7 - 45

m

2

40~5650~6860~78

Operation temp
Ambient temp
Application area

Outdoor noise level
Refrigerant type R410A
Design pressure

Refrigerant
piping

Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)

Outdoor
fan motor

Outdoor air flow

Max. current
Starting current

Compressor

Indoor
fan motor

Model

Power supply

Cooling

Heating

Note:

The noise date is base on hemi-anechoic chamber, during actual operation; these values are normally somewhat
different as a result of ambient condition.
The above design and specifications are subject to change without prior notice for product improvement.

www.generalclimate.com 8 Wall-Mounted Split Type

5. Refrigerant cycle diagram

Ø Cooling only

Ø Heat pump mode

www.generalclimate.com 9 Wall-Mounted Split Type

6. Operation limits

6.1 Cooling operation

Outdoor unit air temp.℃ DB

Indoor air temp. ℃ DB
Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial
pull-down stage.

6.2 Heating operation

Indoor air temp. ℃ DB

Outdoor unit air temp.℃ DB
Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial
pull-down stage.

7. Schematic diagram and Wiring diagram

www.generalclimate.com 10 Wall-Mounted Split Type

7.1 Schematic diagram

www.generalclimate.com 11 Wall-Mounted Split Type

7.2 Wiring diagram

7.2.1 Heating mode

GC/GU-S24HR, GC/GU-S30HR

A1

A2

www.generalclimate.com 12 Wall-Mounted Split Type

GC/GU-S36HR

A1A2

www.generalclimate.com 13 Wall-Mounted Split Type

8. Installation details

8.1 Wrench torque sheet for installation

Torque

mminchKg.m

φ6.351/41.8
φ9.523/84.2

φ12.71/25.5
φ15.885/86.6
φ19.053/46.6

Outside diameter

8.2 Connecting the cables

The power cord of connect should be selected according to the following specifications sheet.

Unit24K30K36K

mm22,52,52,5

Grade

8.3 Pipe length and the elevation

Standard

length

Max.Max.Additional

(m)ElevationElevationrefrigerant

Btu/h

GAS

LIQUID

B (m)A

(m)

(g/m)

24K

5/8’’ (φ15.88)

3/8’’ (φ9.52)

51020655/8’’ (φ15.88)

3/8’’ (φ9.52)

51530653/4’’ (φ19.05)

3/8’’ (φ9.52)

51530

65

Pipe size

30K~36K

Capacity

Caution:
Capacity is base on standard length and maximum allowance length is base of reliability.
Oil trap should be install per 5-7 meters.

In case that more
than 5m.