LG TSUH096EML0 User Guide
WEBSITE http://biz.LGservice.com
Room Air Conditioner
SERVICE MANUAL
CAUTION
-BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
-ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Contents
Functions................................................................................................................................ |
3 |
Product References .............................................................................................................. |
4 |
Dimensions............................................................................................................................. |
9 |
Refrigeration Cycle Diagram............................................................................................... |
11 |
Wiring Diagram..................................................................................................................... |
12 |
Operation Details ................................................................................................................. |
14 |
Display Function .................................................................................................................. |
21 |
Installation ............................................................................................................................ |
22 |
Operation .............................................................................................................................. |
33 |
Disassembly of the parts (Indoor Unit).............................................................................. |
34 |
2-way, 3-way Valve................................................................................................................ |
36 |
Cycle Troubleshooting Guide.............................................................................................. |
44 |
Electronic Parts Troubleshooting Guide............................................................................ |
45 |
Electronic Control Device.................................................................................................... |
52 |
Exploded View and Replacement Parts List...................................................................... |
57 |
-2-
Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Room temperature sensor. (THERMISTOR)
Room temperature control
• Maintains the room temperature in accordance with the Setting Temp.
Starting Current Control
• Indoor fan is delayed for 5 sec at the starting.
Time Delay Safety Control
•Restarting is inhibited for approx. 3 minutes.
Indoor Fan Speed Control
•High, Med, Low, CHAOS
OUTDOOR--- Lights up in compressor operation (for Cooling Model)
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Sleep Mode Auto Control
•The fan is switched to low(Cooling), med(Heating) speed.
•The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
Natural Air Control by CHAOS Logic
•The fan is switched to intermittent or irregular operation
•The fan speed is automatically switched from high to low speed.
Airflow Direction Control
•The louver can be set at the desired position or swing up and down automatically.
PLASMA
•The function will be operated while in any operation mode with selecting the function.
•The function is to be stopped while it is operating with selecting the function.
Defrost(Deice) control (Heating)
•Both the indoor and outdoor fan stops during defrosting.
Hot-start Control (Heating)
•The indoor fan stops until the
evaporator pipe temperature will be reached at 28°C.
-3-
Refrigeration Cycle Diagram
(1) Cooling Only Models
INDOOR UNIT |
OUTDOOR UNIT |
LIQUID SIDE
CAPILLARY TUBE
HEAT |
HEAT |
EXCHANGE |
EXCHANGE |
(EVAPORATOR) |
(CONDENSER) |
GAS SIDE
COMPRESSOR
(2) Cooling & Heating Models
INDOOR UNIT |
OUTDOOR UNIT |
LIQUID SIDE |
CHECK VALVE |
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(Heating Model only) |
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VALVE |
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CAPILLARY TUBE |
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HEAT |
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HEAT |
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EXCHANGE |
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EXCHANGE |
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(EVAPORATOR) |
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(CONDENSER) |
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GAS SIDE |
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VALVE |
ACCUMU |
REVERSING |
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VALVE |
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LATOR |
(Heating Model Only) |
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COMPRESSOR |
COOLING |
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HEATING |
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-4- |
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Operation Details
1. MAIN UNIT FUNCTION
• DISPLAY
1) C/O Model
Operation Indicator
•ON while in appliance operation, OFF while in appliance pause.
•Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)
Sleep Timer Indicator
• ON while in sleep timer mode, OFF when sleep timer cancel or appliance operation pause.
Timer Indicator
• ON while in timer mode (on/off), OFF when timer mode is completed or canceled.
Comp. Running Incidator
•While in appliance operation, ON while in outdoor unit compressor running, OFF while in compressor off.
2)H/P Model
Operation Indicator
•ON while in appliance operation, OFF while in appliance pause.
•Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)
Sleep Timer Indicator
• ON while in sleep timer mode, OFF when sleep timer cancel or appliance operation pause.
Timer Indicator
• ON while in timer mode (on/off), OFF when timer mode is completed or canceled.
Defrost Indicator
•OFF except when hot start during heating mode operation or while in defrost control.
■Cooling Mode Operation
•When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan stop.
•When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp |
Setting Temp+0.5°C |
Compressor OFF Temp |
Setting Temp-0.5°C |
•While in compressor running, operating with the airflow speed set by the remote control. While in compressor not running, operating with the low airflow speed regardless of the setting.
■Healthy Dehumidification Mode
•When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.
26°C ≤ |
Intake Air Temp |
25°C |
24°C ≤ |
Intake Intake Air Temp<26°C |
Intake Air Temp-1°C |
18°C ≤ |
Intake Intake Air Temp<24°C |
Intake Air Temp-0.5°C |
Intake Air Temp<18°C |
18°C |
|
-5-
•While in compressor off, the indoor fan repeats low airflow speed and pause.
•While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification operation and 4-min compressor off repeat.
Compressor ON Temp. |
Setting Temp+0.5°C |
Compressor OFF Temp. |
Setting Temp-0.5°C |
•In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
■Heating Mode Operation
•When the intake air temp reaches +3°…above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp. |
Setting Temp. |
Compressor OFF Temp. |
Setting Temp.+3°C |
•While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C, when above 28°C , it operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it operates with Super-Low(while in sleep mode, with the medium airflow speed).
•While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C , it operates with the low airflow speed.
•If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the outdoor fan is turned on/off according to the indoor pipe temp.
•While in defrost control, both of the indoor and outdoor fans are turned off.
■Defrost Control
•While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing, reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.
•After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the time of defrost control are determined according to the following conditions.
1)While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is compared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which, whether to carry out defrost control or not is determined.
2)According to the need of defrost control shown above and the elapsed time of heating mode operation at that moment, the defrost control time is determined.
3)When the determined time of defrost control is below 7 min, heating mode operation continues without carrying out defrost control. According to the procedure stated above, the determination is made again. When the defrost control time is 7 min or longer, defrost control is then carried out.
•While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the present temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher, defrost control is completed and heating mode operation is carried out.
•While in defrost control, if the defrost time determined before the start of defrost control is completed, defrost control stops and heating mode operation is carried out regardless of the above condition.
•When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of the defrost conditions above.
•While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.
-6-
■ Fuzzy Operation (C/O Model)
•According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp |
Setting Temp + 0.5°C |
Compressor OFF Temp |
Setting Temp + 0.5°C |
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.
26°C ≤ Intake Air Temp |
25°C |
24°C ≤ Intake Air Temp < 26°C |
Intake Air Temp + 1°C |
22°C ≤ Intake Air Temp < 24°C |
Intake Air Temp + 0.5°C |
18°C ≤ Intake Air Temp < 22°C |
Intake Air Temp |
Intake Air Temp<18°C |
18°C |
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
■Fuzzy Operation (H/P Model)
•When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off, the operation mode is selected.
•When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air temp at that moment as follows.
24°C ≤ |
Inatake Air Temp |
Fuzzy Operation for Cooling |
21°C ≤ |
Inatake Air Temp<24°C |
Fuzzy Operation for Dehumidification |
Inatake Air Temp<21°C |
Fuzzy Operation for Heating |
|
•If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1)Fuzzy Operation for Cooling
•According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp |
Setting Temp +0.5°C |
Compressor OFF Temp |
Setting Temp + 0.5°C |
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.
26°C≤ |
Intake Air Temp |
25°C |
24°C≤ |
Intake Air Temp<26°C |
Intake Air Temp + 1°C |
22°C≤ |
Intake Air Temp<24°C |
Intake Air Temp + 0.5°C |
18°C≤ |
Intake Air Temp<22°C |
Intake Air Temp |
Intake Air Temp<18°C |
18°C |
|
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
-7-
2) Fuzzy Operation for Dehumidification
•According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp |
Setting Temp + 0.5°C |
Compressor OFF Temp |
Setting Temp+0.5°C |
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.
26°C ≤ |
Intake Air Temp |
25°C |
24°C ≤ |
Intake Air Temp<26°C |
Intake Air Temp+1°C |
22°C ≤ |
Intake Air Temp<24°C |
Intake Air Temp+0.5°C |
18°C ≤ |
Intake Air Temp<22°C |
Intake Air Temp |
Intake Air Temp<18°C |
18°C |
|
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in dehumidification operation.
3)Fuzzy Operation for Heating
•According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp |
Setting Temp |
Compressor OFF Temp |
Setting Temp + 3°C |
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.
20°C≤Intake Air Temp |
Intake Air Temp + 0.5°C |
Intake Air Temp<20°C |
20°C |
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to the intake air temperature and the setting temperature.
■Airflow Speed Selection
•The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow speed selection key on the remote control.
■On-Timer Operation
•When the set time is reached after the time is input by the remote control, the appliance starts to operate.
•The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
•If the appliance is operating at the time set by the timer, the operation continues.
-8-
■Off-Timer Operation
•When the set time is reached after the time is input by the remote control, the appliance stops operating.
•The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
•If the appliance is on pause at the time set by the timer, the pause continues.
■Off-Timer ↔ On-Timer Operation
•When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is carried out according to the set time.
■Sleep Timer Operation
•When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appliance operation, the operation of the appliance stops.
•While the appliance is on pause, the sleep timer mode cannot be input.
•While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature increases by 1°C. After another 30 min elapse, it increases by 1°C again.
•When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to the low.
•When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to the medium.
■Chaos Swing Mode
•By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are fixed to the desired direction.
•While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.
< Cooling Mode > |
< Heating Mode > |
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CLOSED |
CLOSED |
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7° |
7° |
OPEN |
OPEN |
■Chaos Natural Wind Mode
•When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.
-9-
■Forced Operation
•Operation procedures when the remote control can't be used.
•The operation will be started if the power button is pressed.
•If you want to stop operation, re-press the button.
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Cooling Model |
Operating mode |
Cooling |
IndoorFANSpeed |
High |
SettingTemperature |
22°C |
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Heat pump Model |
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Room Temp.≥ 24°C |
21°C ≤ Room Temp. < 24°C Room Temp. < 21°C |
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Cooling |
Healthy Dehumidification |
Heating |
High |
High |
High |
22°C |
23°C |
24°C |
•While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation.
■Test operation
•During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room temperature and resets in 18±1 minutes.
•During test operation, if remote controller signal is received, the unit operates as remote controller sets.
If you want to use this operation, open the front panel upward and Press the power button let it be pressed for about 3 seconds.
•If you want to stop the operation, re-press the button.
■Auto restart
•In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions.
-10-
■Remote Control Operation Mode
•When the remote control is selected by the slide switch on the main unit, the appliance operates according to the input by the remote control.
■Protection of the evaporator pipe from frosting
•If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting.
•When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the outdoor fan is turned on according to the condition of the room temperature.
■Buzzer Sounding Operation
•When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.
•When the appliance-pause key is input by the remote control, the long "beep—" sounds.
•When a key is input by the remote control while the slide switch on the main unit of the appliance is on the forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that the remote control signal cannot be received.
-11-
Display Function
1. Heating Model |
2. Cooling Model |
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Operation Indicator |
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Operation Indicator |
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• Cooling, Soft Dry, Fan, Heating |
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• Cooling, Soft Dry, Fan |
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Sleep Timer Indicator |
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Sleep Timer Indicator |
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• Sleep Mode |
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• Sleep Mode |
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Timer Indicator |
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Timer Indicator |
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• Timer Mode |
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• Timer Mode |
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Defrost Indicator |
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Compressor Indicator |
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• Hot-start, Defrost |
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Self-diagnosis Function
Error |
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Error Display LED |
Error contents |
SVC check point |
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Code |
(Indoor body operation LED) |
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• Indoor room temperature |
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1 |
(once) |
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thermistor open/short |
• Indoor Thermistor |
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• Indoor pipe temperature |
assembly check |
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3sec |
3sec |
3sec |
thermistor open/short. |
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-12-
Installation
1. Installation of indoor, Outdoor unit
1) Selection of the best location
1.Indoor unit
•Do not have any heat or steam near the unit.
•Select a place where there are no obstacles in front of the unit.
•Make sure that condensation drainage can be conveniently routed away.
Do not install near a doorway.
•Ensure that the space around the left and right of the unit is more than "A". The unit should be installed as high on the wall as possible, allowing a minimum of "B" from ceiling.
•Use a stud finder to locate studs to prevent unnecessary damage to the wall.
More than "B"
More than 2.3m |
More than "B" |
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CAUTION
Install the indoor unit on the wall where the height from the floors more than 2.3 meters.
•Select a place so that the warm air and noise from the air conditioner do not disturb neighbors.
More than 10 cm
More than 10 cm
More than 70 cm
2) Piping length and elevation
Capacity |
Pipe Size |
Standard |
Max. |
Max. |
Additional |
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(Btu/h) |
GAS |
|
LIQUID |
Length |
Elevation |
Length |
Refrigerant |
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(m) |
B (m) |
A (m) |
(g/m) |
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7k~14k |
3/8"(Ø9.52) |
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1/4"(Ø6.35) |
4or7.5 |
7 |
15 |
20 |
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1/2"(Ø12.7) |
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1/4"(Ø6.35) |
4or7.5 |
7 |
15 |
20 |
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1/2"(Ø12.7) |
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1/4"(Ø6.35) |
4or7.5 |
15 |
30 |
20 |
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18k~28k |
5/8"(Ø15.88) |
1/4"(Ø6.35) |
4or7.5 |
15 |
30 |
20 |
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5/8"(Ø15.88) |
3/8"(Ø9.52) |
4or7.5 |
15 |
30 |
30 |
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30k~38k |
5/8"(Ø15.88) |
3/8"(Ø9.52) |
7.5 |
15 |
30 |
30 |
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3/4"(Ø19.05) |
3/8"(Ø9.52) |
7.5 |
15 |
30 |
50 |
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Outdoor unit |
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Indoor unit |
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A |
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A |
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Indoor unit |
B |
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B |
Outdoor unit |
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Grade |
Clearance(cm) |
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A |
B |
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7K~28K |
10 |
5 |
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30K~38K |
30 |
12 |
2.Outdoor unit
•If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.
•Ensure that the space around the back and sides is more than 10cm. The front of the unit should have more than 70cm of space.
•Do not place animals and plants in the path of the warm air.
•Take the air conditioner weight into account and select a place where noise and vibration are minimum.
-13-
Outdoor unit |
I |
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Oil trap
Indoor unit
B
If case more than 5m
CAUTION
•Capacity is based on standard length and maximum allowance length is on the basis of reliability.
•Oil trap should be installed every 5~7 meters.
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