LG TB-H488RSS5 Manuel utilisateur
Ceiling Duct Type
Air Conditioner
SERVICE MANUAL
MODELS: TB-H488RSS5
Contents
Functions ..................................................................................................................................3
Product Specifications .............................................................................................................5
Dimensions ..............................................................................................................................11
Refrigeration Cycle Diagram ..................................................................................................31
Wiring Diagram .......................................................................................................................35
Operation Details ....................................................................................................................51
Installation of Indoor, Outdoor Unit ......................................................................................54
Test running ............................................................................................................................66
Optional Operation .................................................................................................................68
External Static Pressure & air Flow ......................................................................................70
3-way Valve .............................................................................................................................71
Cycle ........................................................................................................................................74
Cycle Troubleshooting Guide ................................................................................................78
Electronic Parts Troubleshooting Guide ..............................................................................79
Electronic control device .......................................................................................................82
Exploded View and Replacement Parts List ........................................................................83
–2–
Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Operation(Auto Change Over)
Deice (defrost) control (Heating)
Auto Restart
–3–
Hot-start Control (Heating) • The indoor fan does not start until the evaporator piping
temperature will be reached at 28°C.
High head height Drain pump(Optional) • A standard drain-head height of up to 700mm is possible.
Central Control(Optional) •
It is operating individually or totally by central control function.
Group Control(Optional Wiring)
Radio Frequency Control (Optional)
•
Each controller can control 16 units and 8 controllers can be connected.
•
It operates maximum 16 units with the help of only one wired remote
controller and each unit can be randomly started to prevent overcurrent.
• Room temperature sensor. (Thermistor)
•
Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• High, Medium, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automati-
cally previous operation mode after power supply.
• The setting temperature and desired operation mode are auto-
matically set by fuzzy rule.
• Both the indoor and outdoor fan stop during defrosting.
• Hot start after defrost ends.
–4–
Remote Controller
Operation ON/OFF
Operation Mode Selection
Fan Speed Selection
Room Temperature Display
Temperature Setting
Setting the Timer
Weekly Program
(Cooling
model only) (Heating
model only)
(Low) (Med) (High)
Cooling Operation Mode ( )
Heating Operation Mode ( ) Auto Operation Mode ( )
Soft Dry Operation Mode ( )
Fan Operation Mode
HIMEDLO
Program Holiday
SET/CLR
MinHour
Week
Timer CancelTimer Cancel
: High:39°C ļLOW:11°C
: Only the Fan is in operation.
Cooling Heating
Down to 18°C
Up to 30°C
Down to 16°C
Up to 30°C
1. Specifications
1.1 Indoor unit
-5-
5
5
1. Specifications
1.2 Outdoor Unit
-6-
Note :
1. All data are based on the following conditions:
- Cooling Temperature : Indoor 27°C(80.6°F) DB / 19°C(66.2°F) WB
Outdoor 35°C(95°F) DB / 24°C(75.2°F) WB
- Heating Temperature : Indoor 20°C(68°F) DB / 15°C(59°F) WB
Outdoor 7°C(44.6°F) DB / 6°C(42.8°F) WB
- Piping Length : Interconnected Pipe Length = 7.5m
- Difference Limit of Elevation (Outdoor ~ Indoor Unit) is Zero.
2. Wiring cable size must comply with the applicable local and national code.
3. Due to our policy of innovation some specifications may be changed without notification.
4. Sound Level Values are measured at Anechoic chamber.
Therefore, these values can be increased owing to ambient conditions during opration.
TBUH488RSS5
Rated kW 14.0
Rated Btu/h 48,000
Rated kW 15.2
Rated Btu/h 52,000
Cooling Rated kW 5.30
Heating Rated kW 5.00
W / W 2.65 / 3.05
V / Ø / Hz 380-415 / 3 / 50
Cooling Rated A 9.0
Heating Rated A 8.0
Cooling Max. A -
Heating Max. A -
Wiring Connections Power Supply Cable (included Earth) No. x mm2 (AWG) 5C x 3.5 (12)
- White
W x H x D mm 900 × 1,165 × 370
W x H x D inch 35-7/16 × 45-7/8 × 14-9/16
kg (lbs) 95.0 (209.4)
- Scroll
Model x No. SB061YAB x 1
- Three Phase Induction Motor
W x No. 4,050 x 1
- R22
g (oz) 3,600 (141.1)
m (ft) 7.5 (24.6)
g/m (oz/ft) 65 (0.76)
- Capillary
- SUNISO 4GSI or NM56M
cc x No. 1,650 x 1
- (2 × 26 × 17) × 2
- Propeller
m3/min x No. 52.5 x 2
- AC
W x No. 77 x 2
Cooling Rated dB(A) 61
Heating Rated dB(A) 61
Liquid Outer Dia. mm(inch) Ø 9.52 (3/8)
Gas Outer Dia. mm(inch) Ø 19.05 (3/4)
Max. m (ft) 50 (164)
Maximum Height
Difference Outdoor Unit ~ Indoor Unit Max. m (ft) 30 (98.4)
Cooling Min. ~ Max. ℃DB (℉DB) 21 (69.8) ~ 54 (129.2)
Heating Min. ~ Max. ℃DB ( ℉DB) -5(23.0) ~ 24 (75.2)
Heat Exchanger (Row x Column x Fins per inch) x No.
Operation Range
(Outdoor Temperature)
Fan
Fan Motor
Sound Pressure Level
Piping Connections
Piping Length
Type
Air Flow Rate
Type
Type
Dimensions
Casing Color
EER / COP
Type
Refrigerant Oil
Type
Precharged Amount
Charged volume
Power Input
Running Current
Starting Current
Power Supply
Output
Compressor
Refrigerant
Net Weight
Motor type
Motor Output
Chargeless-Pipe Length
Model
Additional Charging Volume
Control
Outdoor unit
Capacity
Cooling
Heating
5
8
5
–9–
Description PCB Connector
CN-PIPE
CN-ROOM
Model No.: TB-H488RSS5
High
Pressure
Switch(By-Pass)
High
Pressure
Switch
Compressor
MM
Outdoor Unit
Indoor Unit
Ø9.52 / 3 way
Flare Connection
Ø19.05 / 3 way
Flare Connection
Ø19.05 / 2 way
Flare Connection
Ø9.52 / 2 way
Flare Connection
: Cooling
: Heating
←
BY-PASS
4 way
Valve
Accumulator
Condenser out
Capillary Tube
Cooling
Capillary Tube
Evaporator in
Capillary Tube
Heating
Capillary Tube
MM MM
Thermistor for
Suction Air temperature
Thermistor for evaporator
outlet temperature
Thermistor for evaporator outlet temperature
Thermistor for Suction Air temperature
565
3.Piping diagrams
Operation Details
(1) The function of main controls/controller
1. Time Delay Safety Control
• 3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
• 30sec... The 4-way valve is ceased for 30sec. to prevent the abnormal noise of the refrigerant gas when the
Heating operation is OFF or switched to the other operation mode while compressor is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by Micom Control.
3. Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to remote controller settings and
the operation diagram is as following.
–10–
Intake Air temp.
SET TEMP.+0.5°C
(COMP. ON)
SET TEMP. -0.5°C
nahteroMnahteroM)FFO.PMOC(
setunim3setunim3
gnitceleSgnitceleSgnitceleS
deepsnafdeepsnafdeepsnaf
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
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