Related Manuals for Heat Controller DMC24CA-1
Summary of Contents for Heat Controller DMC24CA-1
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Page 1: Ceiling Cassette Type
Ceiling Cassette Type Single-Zone Air Conditioning DMC24CA-1 DMC36CA-1 Before servicing the unit, read the “safety precautions” in this manual. Only for authorized service personnel. -
Page 2: Table Of Contents
TABLE OF CONTENTS Table of contents Page 1. Safety Precautions ......................3 2. Feature & Benefits ......................7 3. List of Functions ......................10 4. Function of Remote Control ...................11 5. Specifications .........................13 6. Dimensional Drawings ....................15 7. Wiring Diagrams......................18 8. Refrigerant Cycle Diagrams ...................20 9. -
Page 3: Safety Precautions
Safety Presautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury. - Page 4 Safety Presautions Do not install, remove, or re- Be cautious when unpacking For installation, always con- install the unit by yourself and installing the product. tact the dealer or an (customer). Authorized Service Center. • There is risk of fire, electric shock, •...
- Page 5 Safety Presautions Do not store or use flammable gas or com- If strange sounds, or small or smoke comes bustibles near the product. from product. Turn the breaker off or discon- nect the power supply cable. • There is risk of fire or failure of product. •...
- Page 6 Safety Presautions Keep level even when installing the product. Use two or more people to lift and transport the product. • To avoid vibration or water leakage. • Avoid personal injury. 90˚ Operational Use a soft cloth to clean. Do not use harsh Do not touch the metal parts of the product detergents, solvents, etc.
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Page 7: Feature & Benefits
Features & Benefits Features & Benefits Environment Friendly Refrigerant : - LG Ceiling Cassette Air Conditioners uses environ- ment friendly refrigerant, which don't do any harm to the environment. Dust electrode Dust particles discharge Pre-filter Ionizer Dusts Collection +6.5KV discharge Purified Polluted Plasma Air Purifier :... -
Page 8: Auto Restart Operation
Features & Benefits Swirl Swing 4- Open(Conventional) Swirl Swing(New) - It is the function for comfort cooling/heating operation. Comparison of Floor Temp. Distribution(20 C) - The diagonal two louvers are opened the more larger than the other louvers. After one minute, it is opposite. 2.4% 100% 4.8%... -
Page 9: Self Diagnosis Function
Features & Benefits High Ceiling Operation - According to the height of ceiling installation, it pro- vides variability of indoor fan motor rpm. If the height of installation is low then you can adjust low rpm of indoor fan motor. On the other hand if the height of the installation is high you can adjust high rpm of indoor fan motor. -
Page 10: List Of Functions
List of Functions List of Functions • Ceiling Cassette Category Function DMC24CA-1 DMC36CA-1 Air supply outlet Airflow direction control (left & right) Airflow direction control (up & down) Auto Auto Auto swing (left & right) Auto swing (up & down) -
Page 11: Function Of Remote Control
Function of Remote Control Function of Remote Control 1. Wireless LCD Remote Control 1. START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. Signal transmitter 2. OPERATION MODE SELECTION BUTTON Used to select the operation mode. 3. - Page 12 Function of Remote Control 2. Wired LCD Remote Control AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION Room Temp AUTO Heater Preheat Defrost Humidify Filter Out door 2ndF Time ZONE 1 2 3 4 Timer Operation unit No Func Program set Set no.
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Page 13: Specifications
Specifications Specifications Indoor unit type Ceilling Cassette - 4way Model DMC24CA-1 DMC36CA-1 Power supply Phase/Volts/Hz 1 / 208-230 / 60 1 / 208-230 / 60 Cooling capacity 7.03 9.96 Btu/h 24,000 34,000 Heating capacity Btu/h Current Nominal running current Motor Type... - Page 14 Specifications Outdoor Unit DMC24CA-1 DMC36CA-1 7.03 9.96 Rated Capacity Cooling 24,000 34,000 Btu/h Heating Btu/h Rated Input Cooling Heating Energy Label Testing combination 11.5 Running current Cooling Heating Starting current (Cooling/Heating) 1 / 208-230 / 60 2 / 208-230 / 60...
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Page 15: Dimensional Drawings
Dimensional Drawings Dimensional Drawings 1. Indoor Units Model No.: DMC24CA-1 / DMC36CA-1 900(35.4) (ceiling opening) 840(33.1) 688(27.1) (hanging bolt) 225(8.9) 950(37.4) 950(37.4) 950(37.4) 840(33.1) 688(27.1) 840(33.1) * mm(inch) Part Name Remark Decoration panel Air suction grille Air discharge grille Gas pipe connection... -
Page 16: Outdoor Units
Dimensional Drawings 2. Outdoor Units Model No.: DMC24CA-1 870(34.3) 546(21.5) 160(6.3) 54.6(2.1) 333(13.1) 320(12.6) *mm(inch) 16 Ceiling Cassette Air Conditioner... -
Page 17: Service Manual
Dimensional Drawings Model No.: DMC36CA-1 900(35.4) 550(21.7) 175(6.9) 370(14.6) 65(2.6) 308(12.1) *mm(inch) Part Name Remark Air discharge grille Gas pipe connection Liquid pipe connection Power & transmission connection Earth screw Service Manual 17... -
Page 18: Wiring Diagrams
Wiring Diagrams Wiring Diagrams 1. Indoor Unit DMC24CA-1 / DMC36CA-1 Connector Number Location CN-POWER AC power supply CN-MOTOR BLDC fan motor output CN-DPUMP Drain pump output CN-DISP Display CN-FLOAT Float switch input CN-REMO Remote control CN-CC Dry-contact CN-ROOM Room sensor... -
Page 19: Outdoor Unit
Wiring Diagrams 2. Outdoor Unit DMC24CA-1 Notes: BLUE BLACK BROWN ORANGE WHITE YELLOW GN/YL GREEN/YELLOW FIELD WIRING DMC36CA-1 Notes: BLUE BLACK BROWN ORANGE WHITE YELLOW GN/YL GREEN/YELLOW FIELD WIRING Service Manual 19... -
Page 20: Refrigerant Cycle Diagrams
Refrigerant Cycle Diagrams Refrigerant Cycle Diagrams 1. Cooling Only Models INDOOR UNIT OUTDOOR UNIT High pressure Thermistor Thermistor Gas Side H/EX Check Check Valve Valve Thermistor Capillary Tube (Air) Accumulator Heat Exchanger GAS SIDE Thermistor E.E.V. LIQUID SIDE Pipe Size(Diameter:Ø) inch Piping length (ft.) Elevation (ft.) Additional... -
Page 21: Installation
Installation Installation 1. Select the best location Install the air conditioner in the location that satisfies the following conditions. 1.1 Indoor Unit • There should not be any heat source or steam near the unit. • There should not be any obstacle to the air circulation. •... -
Page 22: Indoor Unit Installation
Installation 2. Settlement of outdoor unit • Anchor the outdoor unit with a bolt and nut(ø10mm(0.39inch)) tightly and horizontally on a concrete or rigid mount. Tubing connection Bolt • When installing on the wall, roof or rooftop, anchor the mounting base securely with a nail or wire assum- ing the influence of wind and earthquake. -
Page 23: Wiring Connection
Installation 4. Wiring Connection 1. All wiring must comply with local and national electrical codes. 2. Select a power source that is capable of supplying the current as required by the air conditioner. 3. Feed the power source to the unit via a distribution switch board designed for this purpose. 4. -
Page 24: Installation Of Decoration Panel
Installation 5. Installation of Decoration Panel Before installing the decoration panel, The decoration panel has its installation always remove the paper template. direction. 1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm(0.39inch) in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box. -
Page 25: Heat Insulation
Installation 6. Heat Insulation and pipings HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C(248°F) ). Fastening band (accessory) 2. Precautions in high humidity circumstance: This air conditioner has been tested according to the "KS Standard Conditions with Mist"... -
Page 26: Drain Pipe Work
Installation Seal a small opening In case of the Outdoor Unit being installed around the pipings above position of the Indoor Unit. with gum type sealer. Trap 2. Tape the Piping and Connecting cable from bot- tom to top. 3. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room. -
Page 27: Test Running
Installation 8. Test running 1) PRECAUTIONS IN TEST RUN • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. CAUTION For test run, carry out the cooling operation first even during winter season. Carry out the test run more than 5 minutes without stopping. - Page 28 Installation 2) Connection of power supply 1. Connect the power supply cord to the independent power supply. • Circuit breaker is required. 2. Operate the unit for fifteen minutes or more. 3) Evaluation of the performance 1. Measure the temperature of the intake and dis- charge air.
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Page 29: Optional Operation
Installation 9. Optional Operation 1) Two Thermistor System (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room themperature is controlled by the thermistor of the wired remote-controller, control the temperature according to the position of wired remote-controller. - Page 30 Installation 2) Adjusting air volume to the height of ceiling You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the com- fortable atmosphere to consumers. Procedure 1. Choose the selectable position in the table after measuring the height of ceiling. Ceiling height Mode of slide switch Change of air volume...
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Page 31: Troubleshooting Guide
Troubleshooting Guide Troubleshooting Guide Cycle Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air, and operating current. Temp. difference : approx. 0°C(0°F) All amount of refrigerant leaked out. Current : less than 80% of Check refrigeration cycle. rated current Temp. - Page 32 Troubleshooting Guide Electronic Parts Troubleshooting Guide The Product doesn’t operate at all. Trouble 1 Turn off the main power and wait until LED on outdoor PCB is off Turn on the main power again. Does the Operating LED of indoor unit blink Refer to the self-diagnosis function.
- Page 33 Troubleshooting Guide Product doesn't operate with the remote controller. Trouble 2 Turn on main power. While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped. When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller.
- Page 34 Troubleshooting Guide When cooling does not operate Trouble 3 Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller to at least 1°C(1.8ºF) below room temperature. When in Air Circulation Mode, Compressor/Outdoor Fan is stopped. Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA).
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Page 35: When Indoor Fan Does Not Operate
Troubleshooting Guide When indoor Fan does not operate Trouble 4 Turn off Main power Check the connection of CN-FAN or CN-MOTOR Check the Fan Motor Check the Fuse(AC250V/T2A) Check the related circuit of indoor Fan Motor. • The pin of Micom, and the part for driving SSR •... -
Page 36: When Vertical Louver Does Not Operate
Troubleshooting Guide When Vertical Louver does not operate Trouble 5 • Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Vertical Louver with hands Normal •... - Page 37 Troubleshooting Guide Self-diagnosis Function Error Indicator • The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble. • Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table. •...
- Page 38 Troubleshooting Guide Troubleshooting CH01, CH02, CH06 Display Title Cause of error Check point & Normal condition code • Open / Short Normal resistor : 10K / at 25°C(77°F) (Unplugged) Indoor air sensor • Soldered poorly Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) •...
- Page 39 Troubleshooting Guide Troubleshooting CH03 Display Title Cause of error Check point & Normal condition code • Connection of wire Communication • Open / Short • Main PCB Volt. DC12V Wired R/C • Wrong connection • Noise interference Wired R/C Indoor Unit 12Vdc 12Vdc Check the Volt.
- Page 40 Troubleshooting Guide Troubleshooting CH04 Display Title Cause of error Check point & Normal condition code • The connection of wire(Drain pump/ Float switch) • Drain pump power input. (220V) Drain pump • Float switch Open. • Drain tube installation. / Float switch (Normal : short) •...
- Page 41 Troubleshooting Guide Troubleshooting CH05, CH53 Display Title Cause of error Check point & Normal condition code • Power input AC 220V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. Communication • Communication poorly •...
- Page 42 Troubleshooting Guide Troubleshooting CH24, CH25 Display Title Cause of error Check point & Normal condition code • Check the connection of “CN_Press”. • Low / High press Press S/W Open • Check the components. S/W open. • Abnormal Input voltage •...
- Page 43 Troubleshooting Guide Troubleshooting CH32, CH33 Display Title Cause of error Check point & Normal condition code • Check the discharge pipe sensor for INV. D-pipe (Inverter) • Check the install condition for over load. • Discharge sensor temp. high • Check the leakage of refrigerant. (Inverter) temp.
- Page 44 Troubleshooting Guide Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Display Title Cause of error Check point & Normal condition code • Open / Short • Normal resistor : 200K / at 25°C(77°F) (Unplugged) D-pipe sensor (Inverter) • Soldered poorly • Normal voltage : 4.5Vdc / at 25°C(77°F) (plugged) •...
- Page 45 Troubleshooting Guide Troubleshooting CH51, CH60 Display Title Cause of error Check point & Normal condition code • Over Capacity • Check the indoor unit capacity. Combination Capacity Error • Undder Capacity • Check the combination table. Combination EEPROM • Check the PCB ASM P/No. •...
- Page 46 Troubleshooting Guide Troubleshooting CH61, CH62 Display Title Cause of error Check point & Normal condition code Condenser • Condenser pipe sensor • Check the load condition. pipe sensor detected high • Check the sensor of Condenser pipe sensor. temp. high temp.(65°C)(149°F) •...
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Page 47: 3-Way)Valve
(3-way) Valve (3-way) Valve 3-way Valve (Liguid Side) 3-way Valve (Gas Side) Valve cap Valve cap Open position Open position Closed position Closed position To piping To piping Service connection Service Service Service connection port cap port port cap port To outdoor unit To outdoor unit Service port... -
Page 48: Pumping Down
(3-way) Valve (1) Pumping down Liquid side Indoor unit Outdoor unit Open 3-Way valve Gas side Closed 3-Way valve CLOSE CLOSE Purge the air Procedure • 6. Operate the air conditioner at the cooling cycle For pumping down,firstly short the Low Pressure and stop it when the gauge indicates 1kg/cm s/w at the outside and then operate below proce- dure. - Page 49 (3-way) Valve (2) Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 2-Way valve Open Gas side 3-Way valve Open Vacuum pump OPEN CLOSE • Procedure 6. Disconnect the charge hose from the vacuum 1. Confirm that both the liguid side valve and gas pump.
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Page 50: Gas Charging
(3-way) Valve (3) Gas Charging (After Evacuation) Liquid side Indoor unit Open Outdoor unit 2-Way valve Gas side Open 3-Way valve Check valve Charging cylinder OPEN CLOSE • Procedure 1. Connect the gauge to the charging cylinder. 4. Immediately disconnect the charge hose from - Connect the charge hose which you disconnect- the gas side valve's service port. -
Page 51: Electronic Control Device
Electronic Control Device Electronic Control Device • Main P.C.B ASM <Indoor> <Outdoor> Service Manual 51... - Page 52 Specifications and performance data subject to change without notice. 03/19/07...