Page 2 - TABLE OF CONTENTS
- 2 - Wall Mounted Multi-Zone Split System Air Conditioner Wall Mounted Multi-Zone Split System Air Conditioner Service Manual TABLE OF CONTENTS Combination table ....................................................................................................................................... 3...
Page 3 - This symbol alerts you to the risk of electric shock.; Symbols Used in this Manual; Combination table
- 3 - Service Manual 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 This symbol alerts yo...
Page 4 - Safety Precautions; WARNING; WARNING; Installation; Be sure to follow the instruction.
- 4 - Wall Mounted Multi-Zone Split System Air Conditioner Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions mustbe followed. ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness...
Page 5 - Gasolin
- 5 - Service Manual Safety Precautions Do not install, remove, or re-install the unit by yourself(customer). • There is risk of fire, electric shock, explosion, or injury. Be cautious when unpackingand installing the product. • Sharp edges could cause injury. Be especially careful of the caseedges ...
Page 7 - CAUTION
- 7 - Service Manual Safety Precautions When the product is not being used for a long time,disconnect the power by turning off the breaker. • There is risk of product damage or failure, or unintend- ed operation. Take care to ensure that nobody could step onor fall onto the outdoor unit. • This coul...
Page 8 - Operational; Wa
- 8 - Wall Mounted Multi-Zone Split System Air Conditioner Safety Precautions Do not expose the skin direct-ly to cool air for long periodsof time. (Don't sit in the draft.) • This could harm to your health. Do not use the product forspecial purposes, such aspreserving foods, works ofart, etc. It is...
Page 9 - • They may burn or explode.
- 9 - Service Manual Safety Precautions Do not recharge or disassemble the batteries.Do not dispose of batteries in a fire. • They may burn or explode. If the liquid from the batteries gets onto yourskin or clothes, wash it well with clean water.Do not use the remote if the batteries haveleaked. • T...
Page 10 - Seaside applications and installation; • The height and width should be more than 150% of
- 10 - Wall Mounted Multi-Zone Split System Air Conditioner Seaside applications and installation Seaside applications and installation 1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.2. Do not install the product where it could ...
Page 11 - Dimensions; Indoor Unit; Split Type Indoor; Model
- 11 - Service Manual Dimensions Dimensions Indoor Unit Split Type Indoor Installation plate D H W W mm(in) 840(33) 895(35.2) H mm(in) 270(10.6) 282(11.1) D mm(in) 153(6) 165(6.5) Model Dimension Split Type 9 kBtu/h 12 kBtu/h
Page 12 - Outdoor Unit; UE; MODEL
- 12 - Wall Mounted Multi-Zone Split System Air Conditioner Outdoor Unit 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 18kBtu...
Page 15 - Product Specifications; Wall Mounted
- 15 - Service Manual Product Specifications Product Specifications Indoor Unit Nominal Cooling Capacity kcal/h(W) Btu/h Nominal Heating Capacity kcal/h(W) Btu/h Air Circulation CFM(CMM) Setting temperature range(cool/heat) °C Fan motor Output W Model Input V Running Current A Fan Type No. Used / Di...
Page 16 - Outdoor Unit - Multiple piping models
- 16 - Wall Mounted Multi-Zone Split System Air Conditioner Model Cooling Capacity Btu/hr W kcal/hr Heating Capacity Btu/hr W kcal/hr Input Cooling W Heating W Running Current(208/230V) Cooling A Heating A Power Supply Ø,V,Hz Max. Number of Connectable Indoor Units Compressor Type (Constant) Model M...
Page 19 - Installation Parts
- 19 - Service Manual Installation Installation Type "A" screw and plastic anchor Type "B" screw Remote Control Holder Installation plate Figure Figure Name Screw driver Electric Drill Measuring Tape, Knife Hole Core Drill Adjustable Wrench Torque wrench Ohmmeter Hexagonal wrench Amm...
Page 20 - Selecting the best location; Indoor unit; More than 20 cm
- 20 - Wall Mounted Multi-Zone Split System Air Conditioner Installation Selecting the best location Indoor unit 1. Do not have any heat or steam near the unit. 2. Select a place where there are no obstacles in front of the unit. 3. Make sure that condensation drainage can be conve- niently routed a...
Page 21 - Piping length and elevation; basis of reliability.; Multi Piping Type
- 21 - Service Manual Installation Piping length and elevation CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability. Multi Piping Type 18 kBtu 30 m (100 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft) 24 kBtu 30 m (100 ft) 15 m (50 ft) 3 ...
Page 22 - Mount the installation plate on the wall with; Installing Installation Plate(Standard Type); with the hole slightly slanted to the outdoor side.; Drilling the hole in the wall
- 22 - Wall Mounted Multi-Zone Split System Air Conditioner Installation The wall you select should be strong and solid enough toprevent vibration 1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall,use anchor bolts. • Mount the installat...
Page 23 - Flaring work; Cut the pipes; Flaring Work and Connection of Piping
- 23 - Service Manual Flaring Work and Connection of Piping Flaring work The main cause for gas leakage is due to defects in flaring work. Carry out correct flaring work using the following procedures. Cut the pipes 1. Use the copper pipe purchased locally. 2. Measure the distance between the indoor...
Page 24 - Check; Connecting the Piping; For right rear piping
- 24 - Wall Mounted Multi-Zone Split System Air Conditioner Flaring Work and Connection of Piping Check 1. Compare the flare work like the figure on the right. 2. If a flared section is defective, cut it off and repeat the flar- ing process again. Indoor 1. Prepare the indoor unit's piping and drain...
Page 25 - Wrap the insulation material around the all connections.
- 25 - Service Manual Flaring Work and Connection of Piping 4. Indoor unit installation Hook the indoor unit onto the upper portion of the installa-tion plate.(Engage the two hooks of the rear top of theindoor unit with the upper edge of the installation plate.)Ensure that the hooks are properly sea...
Page 27 - Indoor unit installation
- 27 - Service Manual Wrap the insulation material around the connecting por-tion. 1. Overlap the connection pipe insulation and the indoor unit pipe heat insulation material. Bind them together with vinyltape so that there is no gap. 2. Wrap the area which accommodates the rear piping hous- ing sec...
Page 28 - Good case; • Bending the pipe from right to left may cause damage to the tubing.
- 28 - Wall Mounted Multi-Zone Split System Air Conditioner Flaring Work and Connection of Piping Installation Information. For left piping. Follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to slowly downward. Bad case • Bending the pipe from right to ...
Page 29 - HOW TO MOUNT ONTO A WALL; • Do not use rechargeable batteries,; HOW TO INSERT BATTERIES
- 29 - Service Manual Flaring Work and Connection of Piping Remove the battery cover from the remote con-troller.• Slide the cover according to the arrow direction. Insert the two batteries.(AAA, 1.5V)• Be sure that the (+) and (-) directions are correct.• Be sure that both batteries are new. Re-att...
Page 30 - Outdoor; • When tightening the flare nut with torque wrench, ensure; Outside diameter
- 30 - Wall Mounted Multi-Zone Split System Air Conditioner Flaring Work and Connection of Piping Outdoor Align the center of the piping and sufficiently tighten the flarenut by hand. Finally, tighten the flare nut with torque wrench until thewrench clicks. • When tightening the flare nut with torqu...
Page 31 - Connect the cable to the Indoor unit.; tions: ETL recognized and CSA certified.; Connecting the Cable between Indoor Unit and Outdoor Unit
- 31 - Service Manual Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individuallyaccording to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.) The g...
Page 32 - Connect the cable to the Outdoor unit.; Remove the control cover from the unit by loosening the; Outdoor unit
- 32 - Wall Mounted Multi-Zone Split System Air Conditioner Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 1. Remove the control cover from the unit by loosening the screw.Connect the wires to the terminals on the control boardindividually as the fol...
Page 33 - WARNING: Loose wiring may cause the termi-; How to connect wiring to the terminals; Methods of connecting the cable; High voltage; Strand wire
- 33 - Service Manual (1) Remove two-caps on the conduit panel. (for low voltage line) (2) Pull out connection cable through conduit. (3) After conduit to the panel, fix nut to the opposite side of panel. (4) Pass the connection cable through the hole. (5) Properly connect the cable on the terminal ...
Page 34 - Connect the cable to the indoor unit
- 34 - Wall Mounted Multi-Zone Split System Air Conditioner Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the indoor unit CAUTION: Provide a circuit breaker between power source and the unit as shownbelow. Air Conditioner Circuit Breaker Use a circuitbreaker or timed...
Page 35 - Checking the drainage; To check the drainage.
- 35 - Service Manual Checking the drainage To check the drainage. 1. Pour a glass of water on the evaporator. 2. Ensure the water flows through the drain 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...
Page 36 - Insulating the Pipe and Special Piping Applications
- 36 - Wall Mounted Multi-Zone Split System Air Conditioner Checking the Drainage, Insulating the Pipe and Special Piping Applications Insulating the Pipe and Special Piping Applications Insulate the piping by wrapping the con-necting portion of the indoor unit withinsulation material and secure it ...
Page 37 - • Check that each copper pipe(both liquid and gas side) between; : Leakage testing shoud be done for each; Do a leakage test of all joints of the copper piping(both; Leak checking; Air Purging and Evacuation
- 37 - Service Manual Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.1. Pressure in the system rises.2. Operating current rises.3. Cooling(or heating) efficiency drops.4. Moisture in the refrigerant circuit may freeze and block capillary tubing.5. Wa...
Page 38 - Finishing the job; Evacuation
- 38 - Wall Mounted Multi-Zone Split System Air Conditioner Air Purging and Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing andindoor unit.Confirm the "Lo" knob of the manifold valve is open. Then,run the vacuum pump.The op...
Page 39 - Charging
- 39 - Service Manual ■ Each outdoor unit is factory charged (see rating plate) for the evaporator as well as a 7.5m(25ft) line set for each indoor line. Any time the total line set is used either shorter or longer then the nominal line set length the refrigerant charge has to beadjusted. ■ Whether ...
Page 40 - ) Prepare remote controller; Split Type; Test Running
- 40 - Wall Mounted Multi-Zone Split System Air Conditioner Test Running 1. Check that all copper piping and wiring has been proper- ly connected. 2. Check that the gas and liquid side service valves are fully open. 1) Prepare remote controller Remove the battery cover by pulling it according tothe ...
Page 41 - MAIN UNIT FUNCTION; • DISPLAY; Operation Indicator; Cooling Mode Operation; Compressor ON Temp; Soft Dry Operation Mode; Intake Air Temp; Heating Mode Operation; below the set point temp, the compressor is turned on.; Function of control; Operation
- 41 - Service Manual 1. MAIN UNIT FUNCTION • DISPLAY Operation Indicator • On while in appliance operation, off while in appliance pause• Flashing if unit is disconnected or has experienced a short in the thermistor (3 seconds off/0.5 sec on). Sleep Timer Indicator • On while in sleep time mode, of...
Page 42 - Fuzzy Operation; ) Fuzzy Operation for Cooling
- 42 - Wall Mounted Multi-Zone Split System Air Conditioner Operation operates (except in sleep mode, the airflow will be at medium speed).• While compressor is off, the indoor fan is off when the indoor pipe temp is below 33°C(91.4°F), when above 35°C(95°F) , it operates with the low airflow speed....
Page 43 - ) Fuzzy Operation for Dehumidification; Airflow Speed Selection
- 43 - Service Manual 2) Fuzzy Operation for Dehumidification • According to the set point temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(0.9°F) or more below the set point temp, the compressor is turned off. When 0.5°C(0.9°F) or more above the set pointtemp, the compressor is...
Page 44 - Sleep Timer Operation
- 44 - Wall Mounted Multi-Zone Split System Air Conditioner Operation • If the appliance is paused 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 operati...
Page 45 - Forced Operation; tion is set according to the intake air temperature as follows.; Buzzer Sound
- 45 - Service Manual ■ Forced Operation • To operate the appliance by force (in case the remote control is lost), the forced operation selection switch is on the main unit of the appliance and operates it in standard conditions. • When the power is supplied while the slide switch is in the forced o...
Page 46 - Function of Indoor Unit; Split Type Indoor Unit
- 46 - Wall Mounted Multi-Zone Split System Air Conditioner Operation "Wall Mounted Type is standard"* Functions is dependent on model type. Function of Indoor Unit On/Off : Lights up during the system operation. Sleep Mode : Lights up during Sleep Mode Auto operation. Timer : Lights up duri...
Page 47 - Function of Outdoor Unit; F). The defrost mode will end when the outdoor pipe temp is above 12
- 47 - Service Manual Function of Outdoor Unit Outdoor Unit Operating Step LEV Control Outdoor Fan Control • Compressor step varies considering conditions such as room temperature, operating room number, temperature gap between room temperature and set point temperature and so on. • The linear expan...
Page 48 - Remote Control Operation; Operation Mode; The Remote Controller transmits the signals to the system.
- 48 - Wall Mounted Multi-Zone Split System Air Conditioner Operation Remote Control Operation ON OFF CANCEL AUTO CLEAN SET 1 3 5 4 9 10 12 14 16 7 2 8 13 11 6 Cooling Operation Auto Operation or Auto Changeover Healthy Dehumidification Operation Flip-up door(opened) Heating Operation Signal transmi...
Page 49 - Disassembly; To remove the Grille from the Chassis.; • Set the up-and-down air discharge louver to open; Before removing the control box, be sure to
- 49 - Service Manual Disassembly Disassembly Indoor Unit Split Type Indoor Unit Disconnect the unit from power supply before mak-ing any checks.Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. • Set the up-and-down air discharge louver to open position (horizontally)...
Page 50 - • Unhook the discharge grille and pull the; • Repairing the unit, do not damage the Caution
- 50 - Wall Mounted Multi-Zone Split System Air Conditioner Disassembly 2. To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis carefully. 3. To remove the Discharge Grille. • Unhook the discharge grille and pull the discharge grille out from the chassis c...
Page 51 - • Unhook the tab on the right inside of the chassis; To remove the Motor Cover; • Loosen the screw securing the cross-flow fan to
- 51 - Service Manual • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporatortoward you until the tab is clear of the slot. 5. To remove the Motor Cover • Remove 2 securing screws.• Pull the motor cover out from the chassis carefully. 6. To remove the Cross...
Page 52 - Schematic Diagram; Electronic Control Device
- 52 - Wall Mounted Multi-Zone Split System Air Conditioner Disassembly Schematic Diagram Electronic Control Device 1. Indoor Unit 1) Split Type
Page 55 - Wiring Diagram
- 55 - Service Manual 1. Indoor Unit Wiring Diagram 2. Outdoor Unit 1)A-MMC18FA-1 2)A-MMH18FA-1 Schematic Diagram
Page 57 - Component Locations; • TOP VIEW
- 57 - Service Manual Schematic Diagram 1. Indoor Unit MAIN P.C.B. ASSEMBLY 1) Split Type Component Locations • TOP VIEW • BOTTOM VIEW PCB :6870A90409BASSY :6871A20771 6871A20782
Page 61 - Troubleshooting Guide; Refrigeration Cycle Diagram
- 61 - Service Manual Troubleshooting Guide Troubleshooting Guide Refrigeration Cycle Diagram Refrigerant Flow Cooling Heating Th1: Discharge thermistor Th2: Discharge thermistor Th3: Outdoor temperature thermistor Th4: Defrost thermistor Field PipingGas Field PipingLiquid Room A EEV-B EEV-A HeatExc...
Page 64 - Error Indicator; Self-diagnosis Function; Indoor Error
- 64 - Wall Mounted Multi-Zone Split System Air Conditioner Troubleshooting Guide ■ Error Indicator • The self-diagnosis function of the air conditioner is used to identify any troubles that may exist.• Refer to the table below to determine the error code associated with the LED signals given by the...
Page 65 - Trouble analysis; Cycle Troubleshooting Guide
- 65 - Service Manual Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air, as well as the operating current. All of the refrigerant many haveleaked out. Restriction in the refrigeration cycle. Refrigerant leakageClog of refrigeration cycleDefective...
Page 66 - Electronic Parts Troubleshooting Guide; The Product doesn’t operate at all.; Procedure
- 66 - Wall Mounted Multi-Zone Split System Air Conditioner Troubleshooting Guide Electronic Parts Troubleshooting Guide ❇ Refer to electronic contorol device drawing & schematic diagram. The Product doesn’t operate at all. Turn off the main power and wait until LED on outdoor PCB is off. Turn o...
Page 67 - Product doesn't operate with the remote controller.
- 67 - Service Manual Troubleshooting Guide Turn on main power. While the compressor has been stopped, the compressor does not operate due to the designed 3 minute delay, which is a protective function anytime the compres- sor is stopped. When the compressor is stopped, the Indoor Fan is driven by a...
Page 68 - Turn on the main power.; Trouble 3; Check Point
- 68 - Wall Mounted Multi-Zone Split System Air Conditioner Troubleshooting Guide Turn on the main power. When in air circulation mode, compressor/outdoor fan is stopped. Turn off main power. Check the electrical wiring diagram of Outdoor side.Check the open or short of connecting wires between Indo...
Page 69 - Check for any interference of Indoor Fan.; When indoor Fan does not operate.
- 69 - Service Manual Troubleshooting Guide When indoor Fan does not operate. Check connection condition of the CN-MOTOR CON-NECTOR Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoorunit that corresponds to the values in the table of page 70 Does the voltage of terminal ofCN-DC/DC CONNECTO...
Page 70 - Voltage of Connectors according to Indoor Fan Speed
Troubleshooting Guide - 70 - Wall Mounted Multi-Zone Split System Air Conditioner Voltage of Connectors according to Indoor Fan Speed 1 2 3 4 1 3 4 1 2 3 4 INDOOR FAN MOTOR INDOOR PWB ASSY Connecting wires between Indoor and Outdoor Indoor Connecting Terminal Outdoor Connecting Terminal Input Power ...
Page 71 - When Vertical Louver does not operate.
- 71 - Service Manual 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 • Check the connection conditio...
Page 72 - Error Code; Check the resistance / voltage
- 72 - Wall Mounted Multi-Zone Split System Air Conditioner Troubleshooting Guide Error Code ■ Trouble Shooting Error Description Cause of error Check point & Normal condition code 01 Indoor air sensor 02 Indoor inlet pipe sensor 06 Indoor outlet pipe sensor • Open / Short• Soldered poorly• Inte...
Page 73 - Error
- 73 - Service Manual Troubleshooting Guide Error Description Cause of error Check point & Normal condition code 05 / 53 Communication (Indoor ➔ Outdoor) • Poor Communication • Power input AC 230V.(Outdoor, Indoor)• The connector for transmission is disconnected.• The connecting wires are miscon...
Page 74 - • Discharge sensor; single cycle has no error for over capacity.; Check the install condition for over load.
- 74 - Wall Mounted Multi-Zone Split System Air Conditioner Troubleshooting Guide Error Description Cause of error Check point & Normal condition code 33 D-Pipe Temp. High • Discharge sensor temp. high • Check the discharge pipe sensor.• Check the install condition for over load.• Check for leak...
Page 75 - Normal resistor : 10K; If the resistance is 0V or 5Vdc, then sensor is abnormal; Check the resistance
- 75 - Service Manual Troubleshooting Guide Error Description Cause of error Check point & Normal condition code 44 Outdoor air sensor 45 Condensor pipe sensor 47 D-Pipe sensor • Open / Short• Soldered poorly• Internal circuit error • Open / Short• Soldered poorly• Internal circuit error • Open ...
Page 78 - • Procedure; - Confirm that the gauge needle has moved
- 78 - Wall Mounted Multi-Zone Split System Air Conditioner 2-way, 3-way Valve (2) Evacuation (All the refrigerant leaked) • Procedure 1. Confirm that both the liguid side valve and gas side valve are set to the opened position. 2. Connect the vaccum pump to the center hose of the manifold gauge. 3....
Page 79 - Connect the gauge to the charging cylinder.
- 79 - Service Manual 2-way, 3-way Valve (3) Gas Charging (After Evacuation) • Procedure 1. Connect the gauge to the charging cylinder. - Connect the charge hose, which you discon- nected from the vacuum pump, to the valve atthe bottom of the cylinder. - If you are using a gas cylinder, also use a s...
Page 80 - Exploded View
- 80 - Wall Mounted Multi-Zone Split System Air Conditioner 135301 152302B 152302A 342800 359011 131410 733010 135312 135311 147581 268711A 146811 147582 346810 135516 35211B 354210 249951 352150 268711B 268711C 267110 135500 152313 567480A 567480B Exploded View Exploded View Indoor Unit Model : B-M...
Page 84 - THE QUALITY LEADER IN CONDITIONING AIR
Specifications and performance data subject to change without notice. HEAT CONTROLLER, INC. 1900 WELLWORTH AVENUE • JACKSON, MICHIGAN 49203 THE QUALITY LEADER IN CONDITIONING AIR P/No.:3828A20390X 08/06/2008
