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Service Manual 3

Operation

1 Unit

2 Unit

Combination of Indoor Unit(kBtu/h)

Cooling

Each Capacity

Unit-A

Unit-B

UNIT-A(Btu/h) UNIT-B(Btu/h)

Total

Btu/h

UNIT-A(Btu/h) UNIT-B(Btu/h)

Btu/h

Total Capacity

Each Capacity

Total Capacity

Heating

9000

18000

9000

18000

2.63

5.27

2.63

5.27

9000

Notes :

1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; outdoor temp. 35°C(95°F)DB, 23.9°C(75°F)WB

2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB

3.The total ability of connected a indoor unit is up to 18k Btu/h

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the
air conditioner.

This symbol indicates special notes.

NOTICE

Symbols Used in this Manual

Combination table

Combination table

Содержание DMH18DB-1

Страница 1: ...Wall Mounted Multi Split System Air Conditioning Heat Pump DMH18DB 1 Before servicing the unit read the safety precautions in this manual Only for authorized service personnel HEAT CONTROLLER INC...

Страница 2: ...25 Connect the cable to the Outdoor unit 26 Connection method of the connecting cable Example 27 Connect the cable to the indoor unit 28 Checking the Drainage Forming the Pipings and Long Pipe Setting...

Страница 3: ...ing Capacity is based on indoor temp 26 7 C 80 1 F DB 19 4 C 66 9 F WB outdoor temp 35 C 95 F DB 23 9 C 75 F WB 2 Heating Capacity is based on indoor temp 21 1 C 70 F DB 15 6 C 60 1 F WB outdoor temp...

Страница 4: ...stallation Be sure not to do Be sure to follow the instruction Do not use a defective or under rated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock F...

Страница 5: ...ause injury accident or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air condi tioner could fall with it causing property damage product...

Страница 6: ...m time to time when operating it together with a stove etc There is risk of fire or electric shock Turn the main power off when cleaning or maintaining the product There is risk of electric shock When...

Страница 7: ...stall the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product To avoid vibration or water leak age Do not inst...

Страница 8: ...plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on or put anyting on the product...

Страница 9: ...with clean water Do not use the remote if the batteries have leaked The chemicals in batteries could cause burns or other health hazards Use a firm stool or ladder when cleaning or maintaining the pro...

Страница 10: ...10 Multi type Air Conditioner Dimensions Dimensions Indoor Unit Split Type Indoor Installation plate D H W W mm in 870 34 2 H mm in 270 10 6 D mm in 153 6 Model Dimension Split Type S4 9 kBtu h...

Страница 11: ...W D L1 L2 L4 L3 H L7 L5 L6 W mm in 870 34 3 H mm in 655 25 8 D mm in 320 12 6 L1 mm in 370 14 6 L2 mm in 25 1 0 L3 mm in 775 30 5 L4 mm in 25 1 0 L5 mm in 546 21 5 L6 mm in 160 6 3 L7 mm in 160 6 3 UE...

Страница 12: ...le A mm inch Gas Cycle A mm inch Liquid Cycle B mm inch Gas Cycle B mm inch High Pressure Gas mm inch Max Interunit Total Piping m ft Piping Length Main Piping m ft Total Branch Piping m ft Each Branc...

Страница 13: ...r Unit Power and Transmission Interunit Cable No x mm2 Indoor Unit B DMH18DB 1 1 208 230 60 2 63 9000 2 63 9000 0 5 BLDC Cross Flow fan 15 1 7 247 1 Direct drive 2 15 20 870 270 153 34 2 10 6 6 7 15 4...

Страница 14: ...trol Holder Installation plate Figure Figure Name Screw driver Electric Drill Measuring Tape Knife Hole Core Drill Spanner Torque wrench Ohmmeter Hexagonal wrench Ammeter Gas Leak Detector Thermometer...

Страница 15: ...ricted 2 Ensure that the spaces indicated by arrows around front back and side of the unit 3 Do not place animals and plants in the path of the warm air 4 Take the air conditioner weight into account...

Страница 16: ...h of each pipe A B Min length of each pipe A B Max Elevation between each indoor unit and out door unit h1 Max elevation between indoor units h2 B h2 h1 A B h1 CAUTION Capacity is based on standard le...

Страница 17: ...easure the wall and mark the centerline It is also important to use caution concerning the location of the installation plate Routing of the wiring to power outlets is through the walls typically Dril...

Страница 18: ...ss section of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to...

Страница 19: ...h the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connec tion later 3 Tape the tubing drain hose and the connecting cable Be sure that the drain h...

Страница 20: ...the drain pipe Wrap the insulation material around the connecting portion 1 Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl t...

Страница 21: ...cer etc between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall Connecting the piping to the indoor unit and the drain hose to drain pipe 1 Align th...

Страница 22: ...ng section Reroute the pipings and the drain hose across the back of the chassis Indoor unit installation 1 Remove the spacer 2 Ensure that the hooks are properly seated on the installation plate by m...

Страница 23: ...t Be sure that both batteries are new Re attach the cover Slide it back into position REMOTE CONTROL PREPARATION OPTIONAL HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES Do not use rechargeable batte...

Страница 24: ...orque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Liquid side piping Torque wrench B UNIT A UNIT...

Страница 25: ...e to connect wires according to the wiring diagram Connect the wires firmly so that not to be pulled out easily Connect the wires according to color codes by referring to the wiring diagram WARNING Pr...

Страница 26: ...C 167 F 3 Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and out door unit For example Type SJOW WARNING Be sure to comply with local codes while r...

Страница 27: ...wiring to the terminals and fasten the wire tightly with the fixing screw of the terminal plate How to connect wiring to the terminals For strand wiring 1 Cut the wire end with a wire cutter or wire c...

Страница 28: ...time delay fuse Main power source Model 18k 1 230 208V 20A Fuse or breaker Capacity Power source 1 Connect the wires to the terminals on the control board individually according to the outdoor unit c...

Страница 29: ...hose of the indoor unit without any leakage and goes out the drain exit Drain piping 1 The drain hose should point downward for easy drain flow 2 Examples of incorrect drain piping Downward slope Do...

Страница 30: ...ng drain hose and connecting cable from down to up 2 Secure the tapped piping along the exterior wall using saddle or equivalent In cases where the Outdoor unit is installed above the Indoor unit perf...

Страница 31: ...rogen gas cylinder to this service port with charge hoses CAUTION Be sure to use a manifold valve for leak testing The high side manifold valve must always be kept closed Pressurize the system to no m...

Страница 32: ...n the valve stem of liquid side valve counter clockwise to fully open the valve 2 Turn the valve stem of gas side valve counter clock wise to fully open the valve 3 Loosen the charge hose connected to...

Страница 33: ...meter foot Example A 75ft line set is used for dual zone 25 additional ft X 0 22 ounces per foot add 5 5 ounces of R 410A Important Unit is critically charge If you are ever uncertain of the unit cha...

Страница 34: ...the system refrigerant charge 1 Measure the pressure of one of the gas side service valves 2 Measure the temperature of the intake and discharge of air 3 Ensure the difference between the intake tempe...

Страница 35: ...he 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 78 8 F Intake Air Temp 25 C 77 F 24 C 75 2 F...

Страница 36: ...he intake air temp at that moment as follows 24 C 75 2 F Intake Air Temp Fuzzy Operation for Cooling 21 C 69 8 F Intake Air Temp 24 C 75 2 F Fuzzy Operation for Dehumidification Intake Air Temp 21 C 6...

Страница 37: ...the setting temp the compressor is turned on Compressor ON Temp Setting Temp Compressor OFF Temp Setting Temp 3 C 5 4 F At the beginning of Fuzzy mode operation the setting temperature is automatical...

Страница 38: ...haos Swing or they are fixed to the desired direction While in Chaos Swing mode the angles of cooling and heating cycle operations are different Chaos Natural Wind Mode When the Chaos Natural Wind mod...

Страница 39: ...n is switched from the forced operation position to the Auto Restarting position or the remote control position the forced operation is canceled and the appliance stops operating In the forced operati...

Страница 40: ...e Setting Temp Indoor fan is delayed for 5 seconds at the starting Restarting is delayed for approx 3 minutes High Med Low Chaos Jet Cool Intermittent operation of fan at low speed The fan is switched...

Страница 41: ...ng to heating heating to cooling Defrost Function After 45 min heating operation check the defrost condition and if outdoor pipe temp is below 5 C 23 F and released from deice operation in case outdoo...

Страница 42: ...sed to stop or start louver movement and set the desired up down airflow direction ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation TIME SETTING BUTTONS Used to adjust the...

Страница 43: ...remove the Grille from the Chassis Set the up and down air discharge louver to open position horizontally by finger pressure Remove the securing screws To remove the Grille pull the lower left and ri...

Страница 44: ...from the chassis carefully 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securin...

Страница 45: ...Remove 2 securing screw Pull the motor cover out from the chassis carefully 6 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right...

Страница 46: ...46 Multi type Air Conditioner Schematic Diagram Schematic Diagram Electronic Control Device 1 Indoor Unit 1 Split Type...

Страница 47: ...53 31 P37 34 35 36 P41 P40 33 32 P36 P35 RX C RX B TX C RX A TX B 14 13 P13 P12 P34 11 10 12 P10 P11 TX A CN LEV C CN LEV B DC 5V C52M 220 50V 2 3 1 2 3 1 5 4 5 4 IC03M 4 4 220 50V C51M 1 1 3 2 3 2 50...

Страница 48: ...NF01J 1uF 1uF C03J 35V C10D 102M 561 2 C04D 35V 470UF 12uH L01D 1000UF 35V 220uF C05D 10V 220uF C03D DC 5V DC 15V IC04D C06D 50V 103 7805 C07D 50V 103 C02D 470uF 2K R02D 1 2W MT 15V C08D 103 50V L02D...

Страница 49: ...Service Manual 49 1 Room Type Indoor Unit Wiring Diagram Schematic Diagram 2 Outdoor Unit...

Страница 50: ...50 Multi type Air Conditioner Schematic Diagram 1 Indoor Unit MAIN P C B ASM 1 Split Type Components Locations TOP VIEW BOTTOM VIEW PCB 6870A90409B ASSY 6871A20771 6871A20782...

Страница 51: ...Service Manual 51 Schematic Diagram 2 Display ASSEMBLY 1 Split Type 6871A20682A...

Страница 52: ...52 Multi type Air Conditioner Schematic Diagram 3 Outdoor Unit 1 Component side...

Страница 53: ...Service Manual 53 Schematic Diagram 2 Solder side...

Страница 54: ...temperature CN TH2 Indoor Th2 Thermistor for indoor air temperature CN TH1 Indoor Th3 Thermistor for evaporating temperature CN TH1 Indoor Th4 Thermistor for evaporating temperature CN TH2 Indoor Th5...

Страница 55: ...error code is different from Model Self diagnosis Function 00 No Error ON 01 Indoor Room Thermistor Error 1 time OFF 02 Indoor In Piping Error 2 times OFF 05 Communication Error between In and Out 5...

Страница 56: ...1 The suction pressure is usually 4 5 6 0 kg cm2 G at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty Temp difference...

Страница 57: ...C230V 60Hz The voltage of main power The voltage applied to the unit The connecting method of Indoor Outdoor connecting cable each color The P W B Ass y Fuse Noise Filter Power Transformer IC01D IC02D...

Страница 58: ...e Sleeping Mode the wind speed is set to the low speed as force Caused by the remote controller Caused by other parts except the remote controller When the mark is displayed in LCD screen replace batt...

Страница 59: ...utdoor fan is stopped Check the related circuit of R01H 1K R02H 1K R03H 1K R04H 1K Micom pin No 74 75 76 77 Check the Indoor temperature sensor is disconnected or not about 10K at 25 C Check the Relay...

Страница 60: ...t PWB Assy s Check the connecting condi tion and disconnection of connecting wires between Indoor and Outdoor unit Check the pattern and the condition of Indoor unit PWB Ass y Check the interference o...

Страница 61: ...nnector Check the soldering condition on PWB of CN UP DOWN Connector Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pin RED of CN UP DOWN and GND Confirm that...

Страница 62: ...gged Normal voltage 2 5Vdc at 25 C 77 F plugged Normal resistor 5K at 25 C 77 F Unplugged Normal voltage 2 5Vdc at 25 C 77 F plugged 10K 2 5Vdc Check the resistance voltage V Check Point 1 Unplug the...

Страница 63: ...PCB is abnormal Transmission circuit of indoor PCB is abnormal Check Point 1 Check the input power AC 230V Outdoor Indoor 2 Check the communication wires are correctly connected Adjust the connection...

Страница 64: ...point Normal condition code 51 Capacitor error Over Capacitor com bination Check the indoor unit capacity Check the combination table Check Point 1 Check the indoor unit capacity 2 Check the combinat...

Страница 65: ...ered poorly Internal circuit error Normal resistor 10K at 25 C 77 F Unplugged Normal voltage 2 5Vdc at 25 C 77 F plugged Normal resistor 5K at 25 C 77 F Unplugged Normal voltage 2 5Vdc at 25 C 77 F pl...

Страница 66: ...ap with cap Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Open Open Servicing with charging cylinder Gas charging Open Open Open Servic...

Страница 67: ...purging of the charge hose Open the Low handle valve on the gauge slightly to air purge from the hose 5 Set the liquid side valve to the closed position 6 Operate the air conditioner at the cooling cy...

Страница 68: ...e has moved toward 76 cmHg vacuum of 4 mmHg or less 5 Close the Low handle of the gauge turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning o...

Страница 69: ...oner in the cooling cycle however one time is not suffi cient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the gas side valv...

Страница 70: ...Specifications and performance data subject to change without notice HEAT CONTROLLER INC 1900 WELLWORTH AVENUE JACKSON MICHIGAN 49203 THE QUALITY LEADER IN CONDITIONING AIR 05 15 07...

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