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Wall Mounted Multi-Zone Split System Air Conditioning/Heat Pump

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4. t EN COH LESE GUCADISP D UP 7 ICOK 104 ICO K ICOIK ICOZK 1 3944029 61 8 2002 i cH 59 Service Manual Schematic Diagram 2 Solder side Wall Mounted Multi Zone Split System Air Conditioner mS shhh de bed we wet we 60 A gt p 4 BOLE ETH BOT Troubleshooting Guide Troubleshooting Guide 1 A MMC18FA 1 EE Field Piping Gas LI LI Th3 LI 1 1 5 5 8 1 Heat 1 LI 1 96 35 Field Pipin pooma a Liquid iie 96 35 1 RoomA D LI LI Refrigerant Flow lt Cooling Strainer Th1
5. Model A MMC18FA 1 A MMH18FA 1 Cooling Capacity Btu hr 18 000 18 000 5 275 5 275 kcal hr 4 536 4 536 Heating Capacity Btu hr 18 000 5 275 kcal hr 4 536 Input Cooling w 1 978 1 978 Heating 1 960 Running Current 208 230V Cooling A 8 8 8 8 Heating A 8 6 Power Supply Q V Hz 1 208 230 60 1 208 230 60 Max Number of Connectable Indoor Units 2 2 Compressor Type Rotary Rotary Constant Model GK094K GK094K Motor Type Hermetic Hermetic Quantity Ea 1 1 Motor Input 955 955 Oil Charge cc 330210 330210 Oil Type FVC68D FVC68D Capacitor yFac 30 370 30 370 O L P Type model name External Type MRA98996 12026 External Type MRA98996 12026 Compressor Type Rotary Rotary Constant Model GK113K GK113K Motor Type Hermetic Hermetic Quantity Ea 1 1 Motor Input 1 120 1 120 Oil Charge cc 330210 330210 Oil Type FVC68D FVC68D Capacitor 35 370 35 370 O L P Type model External Type MRA12124 12026 External Type MRA12124 12026 Refrigerant charge Charge oz g 49 4 1400 49 4 1400 Type R410A R410A Control EEV EEV Coil Tube Size OD inch mm 0 276 7 0 0 276 7 0 Fins per inch 18 18 of Rows amp Column No 2R 28C 2R 28C Fan motor Model IC 1640LG GE IC 1640LG GE Output 90 90 Capacitor 6 370 6 370 Fan Type Propeller Propeller No Used Diameter CFM CMM 1765 7 50 1765 7
6. gt 12 1 BL 5 BR RY COMP B 35 24 Fi BK BR INDOOR UNIT A 2 3 4 F1 RD CN COM 1 BL B TO INDOOR Fi BK BRI MAIN PCB ASSY UNIT B AAAA AAAA 1 2 3 4 F1 RD CN COM 2 F1 FUSE 250V T2 5A Co CAPACITOR TM TB TERMINAL BLOCK CONNECTOR RY RELAY 4WV AWAY VALVE FMo FAN MOTOR HP HIGH PRESSURE SWITCH OLP A MRA12105 12026 OLP MRA98996 12026 CN RY_SV B CN TH2 CN TH1 CN POWER1 CN POWER2 RD ONE SUB ASSY TABIN oer 6 A MMH36FA 1 OUTDOOR WIRING DIAGRAM THERMISTOR PIPE THERMISTOR AIR THERMISTOR DISCHARGE1 THERMISTOR DISCHARGE2 MEZ42694402 LEV LEV LEV TB1 A B POWER SUPPLY 00004 00000 CN LEV A CN LEV B CNLEV C 12 TM PILLAR 69 WH RY COMP A 3 4 BR e 35 6 4 INDOOR F1 UNIT A 1 2 33 CN COM 1
7. EET 46 Q tdoor p r E 47 Remote Control eo TON 48 em 49 Indoor din 49 Schematic Diagtaifi a a ia ata lee 52 Electronic Control DSI 1 ata e 52 Op rcp EET 55 Component ERES 57 Tro bleshooting Guide 61 Refrigeration Cycle P Dc 61 Se lf diagnosis Pudor rl el ec ed 64 Tro bleshooting 65 Electronic Parts Troubleshooting Guide 66 72 2 Nay J Way 76 Explod d VIeW 80 RR MU 80 SVa dl LE Lu 81 Wall Mounted Multi Zone Split System Air Conditioner 2 Combination table 18 kBtu h 2 rooms Combination table Combination Indoor Unit A kBtu h Indoor Unit B kBtu h Total kBtu h 2 Indoor Units 9 9 18 24 kBtu h 2 rooms Combination Indoor Unit A kBtu h Ind
8. Y Gas side 3 Way 9 valve Indoor unit Liquid side 2 Way valve Gas side Charging manifold gauge cylinder Low handle Check valve OPEN Hi handle OPEN 3 Way valve G 1 Connect the gauge to the charging cylinder Connect the charge hose which you discon nected from the vacuum pump to the valve at the bottom of the cylinder If you are using a gas cylinder also use a scale and reverse the cylinder so that the system can be charged with liquid 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air The procedure is the same if using a gas cylinder 3 Open the low handle on the gauge and charge the system with liquid refrigerant If the system can not be charged with the specified amount of refrigerant it can be charged with a little at a time approximately 1509 5 2902 each time while oper ating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the gas side valve s service port This is different from previous procedures Beca
9. 7435 Dimensions 5 Gas side 3 way valve Liquid side 2 c ral MODEL UE2 DIM 36kBtu h mm in 870 34 3 H mm in 1038 40 7 D mm in 320 12 6 L1 mm in 360 14 2 L2 mm in 340 13 4 L3 mm in 25 1 0 L4 mm in 1035 40 8 L5 25 1 0 16 mm in 546 21 5 L7 mm in 160 6 3 L8 mm in 160 6 3 L9 mm in 44 11 7 L10 mm in 64 5 2 5 111 mm in 50 2 0 Wall Mounted Multi Zone Split System Air Conditioner 14 Product Specifications Product Specifications Indoor Unit Type Wall Mounted Model B MMCO9FA 1 B MMHO9FA 1 B MMC12FA 1 B MMH12FA 1 Nominal Cooling Capacity kcal h W 2 267 2 637 2 267 2 637 3 023 3 516 3 023 3 516 Btu h 9 000 9 000 12 000 12 000 Nominal Heating Capacity kcal h W 2 267 2 637 3 023 3 516 Btu h 9 000 5 12 000 Air Circulation CFM CMM 289 8 2 289 8 2 332 9 4 332 9 4 Setting temperature range cool heat C 18 30 18 30 18 30 18 30 Fan motor Output W 15 15 15 15 Model DL 88430LGIF DL 88430LGIF DL 88430LGIF DL 88430LGIF Input V DC36 DC36 DC36 DC36 R
10. MAIN AC PCB ASSY F1 INDOOR CN FAN UNIT B F1 CN COM2 1 i TO F1 INDOOR CN RY_SV UNIT C AAAA AAAA AAAA F1 r F1 FUSE 250V T2 5A Co CAPACITOR TM TB TERMINAL BLOCK CN CONNECTOR RY RELAY 4WV AWAY VALVE FMo FAN MOTOR HP HIGH PRESSURE SWITCH OLP MRA12105 12026 56 CN COM 3 B TH CN TH1 CN POWER1 CN POWER2 WI K BL too OmU SUB PCB ASSY aar n THERMISTOR PIPE THERMISTOR AIR THERMISTOR DISCHARGE1 THERMISTOR DISCHARGE2 MEZ42694404 1 Indoor Unit MAIN P C B ASSEMBLY 1 Split Type TOP VIEW Schematic Diagram 6871 20782 EE d D a 5 9 N 9 5c ese 2 a RU a RU 8 ROLF 5 oe 5 ene z co ial on RISC z 5 PCB 6870 90409 at 2 ASSY 6871420771 8 ur CN THi 2 eco 6 eos 00 49 N 9 Ke HVBRO3H NP O M Rue A 0 t 3 9 29 WHITE z
11. z B H NO sb o TENS 4200 VPLSOVIL89 WSV 09206 0489 Ej E AOS 0L WIXV 4100 AOL 2 45 2102 THEE erPt e 2 He alo pU ele ele 1 LE wilt SE QFE vert D AT s s PPA 9 mI RE 2 vx np nn ERU ale ale oven x ossa 6 Pao eva ax 8 E 2 8 V Q 5 i Y poco o E n FIM 100 00 0 99vezo08 dn le ododo noaa I ZH 100 0 O3N El n H sir wa 9 v E anwo ax s er By i Et 21 sales efe zi E 205 51028 oz azoy 310 Cf AV 19519 5 she T 298 100 T3 IT gI 0539089 gt ua x iios 170 gt OFFEND awogan e dhi wns ee v s 1 Od 1 Indoor Uni Wall Mounted Multi Zone Split System Air Conditioner Schematic Diagram 2 Outdoor Uni
12. 05054 AOS ad 15 Tod N 022 E u i us 4 1040 9 6 904 e 5 ss eg 994 vod 4 ERR co 194 W ATT NO e el 654 ora L woa zl 5 09 v Td 15 4 t bly 00 5 pete tid z z INO AAN 7 TINI Tea I 4 Crete ova 1 z A t t DYOSA 0 213 Std 5 5 5 5 t Om 1 pin 14 5 S 85 ee ASA au APERTUM Service Manual 53 1 forro Schematic Diagram
13. Cooling Strainer eR lt Heating O 9 Th1 Discharge thermistor Th2 Discharge thermistor Th3 Outdoor temperature thermistor Th4 Defrost thermistor Wall Mounted Multi Zone Split System Air Conditioner 62 Troubleshooting Guide 5 A MMC36FA 1 OUTDOOR UNIT E LI 99 52 Room C gt 9 52 High pressure S W Field Piping Room Gas 99 52 Room 1 Header l Th3 1 LI 5 1 5 5 5 3 z 8 89 59 oe oe i oo Heat LI 1 06 35 Room C LI Field Piping id EX Liquid 06 35 Room D 1 LI 1 Refrigerant Flow Cooling LI Th1 Discharge thermistor Th2 Discharge thermistor Th3 Outdoor temperature thermistor OUTDOOR UNIT 6 A MMH36FA 1 LI 09 52 Room 09 52 Field Piping Room B Gas 09 52 1 Room n High pressure S W 1 1 1 Th3 s 3 E 3 5 59 Be 66 66 Heat 1 Exchanger LI 06 35 Room i Field Piping fe Liquid 06 35 1 LI LI Refrigerant Flow lt Cooling iae Heating DIIS Th1 Discharge thermistor Th2 Discharge thermistor Th3 Outdoor temperature thermistor Th4 Defrost thermistor 63 Service Manual Troubleshooting Guide Error Indicator The self diagnosis
14. 64 86 Auto Operation e Dehumidification 18 C 30 C 64 F 86 F Jet Cool Heating 16 30 60 86 eLo Test Mode Soft Dry Operation Mode Intermittent operation of fan at low speed or Defrost Control Heating Sleep Mode Auto Control Both the indoor and outdoor fans stop during de icing Hot start after de Ice ends Natural Air Control by CHAOS Logic Hot start Control Heating The fan is switched to intermittent or irregular operation aTha indeorian se ntil th The fan speed is automatically switched from high to low speed Airflow Direction Control reaches 27 C 80 6 F The fan is switched to low Cooling med Heating speed The unit will be stopped after user selected1 2 3 4 5 6 7 hours The louver can be set at the desired position or swing up and down automatically Model base Wall Mounted Type is standard Functions is dependent on model type Wall Mounted Multi Zone Split System Air Conditioner 46 Outdoor Unit Operating Step Compressor step varies considering conditions such as room temperature operating room number temperature gap between room temperature and set point temperature and so on LEV Control The linear expansion valve is pulse is modulated to keep constant superheat subcooling Outdoor Fan Control Outdoor fan operat
15. Teminal on the Outdoor Unit Teminal on the Outdoor Unit Teminal on the Outdoor Unit 2 Use heat resistant electrical wiring capable of withstanding temperatures up to 75 C 167 F 3 Use outdoor waterproof connection cable rated for at least 300V for the connection between indoor and outdoor unit For example Type SJO WA A WARNING sure to comply with local codes while running the wire from the indoor unit to the outdoor unit size of wire and wiring method etc Every wire must be connected firmly No wire should be allowed to touch refrigerant tubing the compressor or any moving parts Wall Mounted Multi Zone Split System Air Conditioner 32 Connecting the Cable between Indoor Unit and Outdoor Unit 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 block 6 Fix the connection cable with cord clamp provided on the unit to reduce strain at the terminal when the connection cable is pulled outside up to a 35 pound weight nal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected WARNING Loose wiring may cause the termi When connecting each power wire to the corresponding terminal follow i
16. E gt Joe 2 1 RIAL owe BOTTOM VIEW voan mw 5 k ee 5 e 1 Honor TT eae o J 8 T S nt PN eo 2 E IN yee e Hf F ep TE e t Seuil oo 22 2 9 45021 aoar 0 9 57 Service Manual Schematic Diagram 2 Display ASSEMBLY 1 Split Type 6871A20680 TT avoa PWB P No 6870 90240 o 28882 2 08 4 5 5 5 88 at e One 1 LED M PLASMA oV lal 8 8 888 RECEIVER SW_TACT cola ASSEMBLY 6871A Q 20680 5 Wall Mounted Multi Zone Split System Air Conditioner 58 Schematic Diagram 3 Outdoor Unit 1 Component side _ _ 3209 E YAVI AN 10678 2110101489 1459 97210690289 8
17. LEV TB1 A B THERMISTOR PIPE THERMISTOR AIR THERMISTOR DISCHARGE1 THERMISTOR DISCHARGE2 MEZ42694401 POWER SUPPLY 00009 00004 00009 CN LEV B CN LEV C gt 12 TM PILLAR 1 RY COMP 3 BR e 35 54 INDOOR UNIT A CN COM 1 MAIN AC PCB ASSY TO INDOOR CN FAN UNIT B 2 INDOOR CN RY_SV UNIT C F1 FUSE 250V T2 5A Co CAPACITOR TM TB TERMINAL BLOCK CN CONNECTOR RY RELAY FMo FAN MOTOR HP HIGH PRESSURE SWITCH OLP MRA12105 12026 Wall Mounted Multi Zone Split System Air Conditioner CN COM 3 8 CN TH2 p CN TH1 CN POWER1 CN POWER2 WH BL Loo SUB PCB ASSY I CN TABALL CN GN YL THERMISTOR PIPE THERMISTOR AIR THERMISTOR DISCHARGE1 THERMISTOR DISCHARGE2 MEZ42694403 4 A MMH24FA 1 OUTDOOR WIRING DIAGRAM M POWER 1 BK LEV LEV TB1 B POWER SUPPLY gt
18. Interconnecting Piping Length 24 6 ft 7 5m Level Difference of Zero 17 Service Manual Product Specifications Model A MMC36FA 1 A MMH36FA 1 Cooling Capacity Btu hr 36 000 36 000 10 550 10 500 kcal hr 9 071 9 071 Heating Capacity Btu hr 36 000 10 500 kcal hr 9 071 Input Cooling 4 045 4 045 Heating 3340 Running Current 208 230V Cooling A 18 2 18 2 Heating A 17 9 Power Supply V Hz 1 208 230 60 1 208 230 60 Max Number of Connectable Indoor Units 3 3 Compressor Type Rotary Rotary Constant Model GK141K GK141K Motor Type 2 Pole Induction PSC 2 Pole Induction PSC Quantity Ea 1 1 Motor Input 1430 1430 350A 10 350A 10 Oil Type FVC68D FVC68D Capacitor 35 370 35 370 O L P Type model External Type External Type Compressor Type Rotary Rotary Constant Model GJ230K GJ230K Motor Type 2 Pole Induction PSC 2 Pole Induction PSC Quantity Ea 1 1 Motor Input 2370 2370 700 10 7000 10 Oil Type FVC68D FVC68D Capacitor yF Vac 50 400 50 400 O L P Type model Internal Type Internal Type Refrigerant charge Charge oz g 84 7 2400 84 7 2400 Type R410A R410A Control EEV EEV Coil Tube Size OD inch mm 0 276 7 0 0 276 7
19. 2 Low handle CLOSE Hi handle CLOSE Procedure 7 Immediately set the gas side valve to the closed position 1 Confirm that both the gas side and liquid side Do this quickly so that the gauge ends up indicat valves are set to the open position ing 1kg cm 14 22psi Remove the valve stem caps and confirm that the 8 Disconnect the charge set and replace the liquid side valve stems are in the raised position and gas side valve caps and the service port nut Be sure to use a hexagonal wrench to operate Use torque wrench to tighten the service port nut to the valve stems a torque as indicated below 2 Operate the unit for 10 to 15 minutes 7 3 Stop operation and wait for 3 minutes then connect the puree inch kg m Ibf in manifold gauge to the service port of the gas side valve Connect the hose of the gauge with the push pin 2803 Us 18 Deg to the service port 0952 22 2625 4 Air purging of the charge hose Open the Low handle valve on the gauge Be sure to check for gas leakage 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 cycle and stop it when the gauge indicates 1kgf cm 14 22psi Be sure not to short the pressure switch S W otherwise if the low pressure switch S W detects low pressure it will stop the compressor 77 Service Manua
20. 50 Discharge Side Top Side Side Air Circulation Outdoor CMM CFM 50 1765 7 50 1765 7 Noise Level H L at 230V Sound Press 1m dB A 1 51 51 Defrosting Invertion Cycle SVC Valve Liquid inch mm 1 4 6 35 2 1 4 6 35 2 Gas 3 8 9 52 2 3 8 9 52 2 Dimensions W H D inch mm 34 3 25 8 12 6 870 655 320 34 3 25 8 12 6 870 655 320 Net Weight Outdoor Ibs kg 125 7 57 125 7 57 Max Interunit Piping Length Total of Each Room ft m 98 4 30 98 4 30 For One Room ft m 49 2 15 49 2 15 Max Installation Indoor Unit Outdoor Unit ft m 24 6 7 5 24 6 7 5 Height Difference Indoor Unit Indoor Unit ft m 24 6 7 5 24 6 7 5 Packing Dimension W H D inch mm 40 2 28 2 17 2 1020 716 437 40 2 28 2 17 2 1020 716 437 Stuffing Quantity 20 40ft 81 171 81 171 SEER 13 0 13 0 HSPF 77 Note 1 Capacities are based on the following conditions 2 Wiring cable size must comply with the applicable local and national code Cooling Indoor Temperature 26 7 C 80 F DB 19 4 C 67 F 3 Capacities are Net Capacities Outdoor Temperature 35 C 95 F DB 23 9 C 75 F WB 4 The specification may be subject to change without prior notice for purpose Heating Indoor Temperature 21 1 C 70 F DB 15 6 C 60 F WB of improvement Outdoor Temperature 8 3 C 47 F DB 6 1 C 43 F WB Piping Length Interconnecting Piping Length 24 6 ft 7 5m Level Difference of Zero Wall Mounted Multi Zone Split System Air Cond
21. Dimensions Outdoor U lt 9 5 516 lt gg N LO N N N N N pa N 10 peel ES er EIE EEE gt EIE N N gt 12 Wall Mounted Multi Zone Split System Air Conditioner Dimensions Service Manual DIM Sla olele 2 5 2 Els S 43 21 me ES ee 5x l S Dvo Do 3 3 DISIAN N LO 1 1 LLI a E EIE E E E EEE E
22. Discharge thermistor 1 Th2 Discharge thermistor Th3 Outdoor temperature thermistor 2 A MMH18FA 1 OUTDOOR UNIT 1 Field Piping Gas High pressure S W 4 1 lI Tha 1 3 8 z 1 ze 55 55 Heat i Exchanger 1 26 35 Field Piping Room B Liquid 06 351 Room A 5 1 Refrigerant Flow 1 lt Cooling i Strainer p C Heating Th1 Discharge thermistor Th2 Discharge thermistor Th3 Outdoor temperature thermistor Th4 Defrost thermistor 61 Service Manual Troubleshooting Guide 3 A M MC24FA 1 OUTDOOR UNIT 99 52 Field Piping Room 09 52 Room Ths 1 5 5 5 8 HH 85 3 2g oc o6 oo 1 06 35 Field Piping ReomB x p Liquid 06 35 1 Room A T 1 Refrigerant Flow Cooling F Strainer Th1 Discharge thermistor 1 Th2 Discharge thermistor Th3 Outdoor temperature thermistor 4 A MMH24FA 1 OUTDOOR UNIT 09 52 Field Piping Room Bsp Gas 99 52 1 L6 Room A a 4 High pressure S W 1 Th3 1 1 5 5 8 5 85 1 ge 55 55 1 Exchanger LI LI 06 35 Field Piping Boon bos Liquid 06 35 1 RoomA LI Refrigerant Flow lt
23. GE IC 1640LG GE Output Ww 90 90 Capacitor yFac 6 370 6 370 Fan Type Propeller Propeller No Used Diameter CFM CMM 1 460 1 460 Discharge Side Top Side Side Air Circulation Outdoor CMM CFM 1872 53 1872 53 Noise Level H L at 230V Sound Press 1m dB A 1 54 54 Defrosting Invertion Cycle SVC Valve Liquid inch mm 1 4 6 35 2EA 1 4 6 35 2EA Gs 3 8 9 52 2 3 8 9 52 2 Dimensions W H D inch mm 34 3 31 8 12 6 870 808 320 34 3 31 8 12 6 870 808 320 Net Weight Outdoor Ibs kg 141 1 64 141 1 64 Max Interunit Piping Length Total of Each Room ft m 98 4 30 98 4 30 For One Room ft m 49 2 15 49 2 15 Max Installation Indoor Unit Outdoor Unit ft m 24 6 7 5 24 6 7 5 Height Difference Indoor Unit Indoor Unit ft m 24 6 7 5 24 6 7 5 Packing Dimension W H D inch mm 40 2 34 3 17 2 1022 870 437 40 2 34 3 17 2 1022 870 437 Stuffing Quantity 20 40ft 54 114 54 114 13 0 13 0 5 Note 1 Capacities are based on the following conditions 2 Wiring cable size must comply with the applicable local and national code Cooling Indoor Temperature 26 7 C 80 F DB 19 4 C 67 F WB 3 Capacities are Net Capacities Outdoor Temperature 35 C 95 F DB 23 9 C 75 F WB 4 The specification may be subject to change without prior notice for purpose Heating Indoor Temperature 21 1 C 70 F DB 15 6 C 60 F WB of improvement Outdoor Temperature 8 3 C 47 F DB 6 1 C 43 F WB Piping Length
24. Interconnecting Piping Length 24 6 ft 7 5m Level Difference of Zero Wall Mounted Multi Zone Split System Air Conditioner 18 3 Capacities are Net Capacities 4 The specification may be subject to change without prior notice for purpose E Installation Read carefully and then follow step by step Installation plate Installation Type A screw and plastic anchor Type B screw SIII IS Remote Control Holder Figure Screw driver Ohmmeter Electric Drill Hexagonal wrench Measuring Tape Knife Hole Core Drill Ammeter Gas Leak Detector Adjustable Wrench Thermometer Level Torque wrench Flaring Tool Set Service Manual Installation 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 away 4 Do not install near a doorway 5 Ensure the unit is unobstructed allow proper space on all sides according to the arrows and distance measurements in the figures 6 Use a metal detector or stud finder to locate studs to prevent unnecessary damage to the wall CAUTION Install the indoor unit A on the wall where the height from the floors more than 2 4 m 8 ft Outdoor unit 1 If an awning is built over the unit to prevent direct sunlight or rain exposure make sure
25. Lower Higher refrigerant Leakage Clogging or Refrigerant Cycle Restrictions Notice 1 The suction pressure is usually 4 5 6 0 kg cm 64 0 85 34psi at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrapping it with putty 65 Service Manual Troubleshooting Guide Refer to electronic contorol device drawing amp schematic diagram Trouble 1 The Product doesn t operate at all Turn off the main power and wait until LED on outdoor PCB is off E Turn on the main power again Is sound is made from the indoor unit Check the voltage of power AC208V AC230V 60 2 The voltage of main power The voltage applied to the unit P C B Ass y The connecting method of Indoor Outdoor connecting cable each color Fuse Noise Filter Power Transformer ICO1D ICO2D etc XE Primarily the operating condi tion of Micom is O K i Check CN DISP1 The operation check of the P C B Ass y Procedure Specification Remedy former 2 The output voltage of power transformer 3 12010 7812 4 ICO2D 7805 5 ICO1A KIA7036 1 The input voltage of power trans 1 AC230V 30V Check the rated voltage 2 15V 1 5V 3 DC12V 4 DC5V 5 The voltage of micom pin 29 DC4 5VT 1 Replace powe
26. Normal resistor 10KQ at 25 77 Unplugged Indcovallssonsel Normal voltage 2 5Vdc at 25 C 77 F plugged Internal circuit error Open Short 2 Normal resistor 5 at 25 C 77 F Unplugged 020 indoor inlet pipe sensor soldered paniy Normal voltage 2 5Vdc at 25 C 77 F plugged Internal circuit error Open Short e 06 Indoor outlet pipe sensor Soldered poorly 1 a Internal circuit error a 77 F plugged Check Point ON 01 A ON Unplug the sensor on Indoor unit PCB Estimate the resistance of each sensor If the resistance of the sensor is 10KQ 5KQ at 25 C 77 F then sensor is normal Estimate the voltage of each sensor If the voltage of the sensor is 2 5Vdc at 25 C 77 F then sensor is normal If the resistance of the sensor is 0 or 5Vdc then sensor is abnormal gt Repair or Change the PCB Wall Mounted Multi Zone Split System Air Conditioner Check the resistance voltage If the resistance of the sensor is 0 or then sensor is abnormal gt Change the sensor Plug the sensor onto the Indoor unit PCB and Power ON 72 Troubleshooting Guide E rM Rd Description Cause of error Check point amp Normal condition Power input AC 230V Outdoor Indoor The connector for transmissio
27. and block capillary tubing 5 Water may lead to corrosion of parts in the refrigeration system Therefore the indoor outdoor unit and connecting tube must be checked for leaks and vacuumed to remove incondensible gas and moisture in the system Preparation Check that each copper pipe both liquid and gas side between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed Remove the ser vice valve caps from both the gas and the liquid side on the out door unit Check that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage Leakage test Connect the manifold valve with pressure gauges and dry nitro gen 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 more than 150 5 1 9 with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P S 1 G Next test for leaks with liquid soap CAUTION To avoid nitrogen entering the refrigerant system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the system Usually the cylinder is used in a vertical standing position Leakage testing shoud be done for each indoor unit connection set separately 37 1 Do a leakage test of all joints of the c
28. by the remote control While compressor is off fan operates at low speed regardless of the set point Soft Dry Operation Mode When the dehumidification operation input by the remote control is received the intake air temperature is detected and the set point temp is automatically set according to the intake air temperature 26 C 78 8 F lt Intake Air Temp D 25 C 77 F 24 C 75 2 F lt Intake Intake Air Temp lt 26 C 78 8 F 2 Intake Air Temp 1 C 30 2 F 18 C 64 4 F lt Intake Intake Air Temp lt 24 C 75 2 F 2 Intake Air Temp 0 5 C 31 1 F Intake Air Temp lt 18 C 64 4 F gt 18 C 64 4 F While the compressor is off the indoor fan repeats low airflow speed and stop 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 2 Set point Temp 0 5 C 0 9 F Compressor OFF Temp 2 Set point Temp 0 5 C 0 9 F 10 min dehumidification operation the indoor fan operates with the low airflow speed Heating Mode Operation When the intake air temp reaches 3 37 4 F above the set point temp the compressor is turned off When below the set point temp the compressor is turned on Compressor ON Temp 2 Set point Temp Compressor OFF Temp 2 Set point Temp 3 C 37 4 F While compressor is on the indoor fan is off when the indoor pipe temp is below 20 68 when above 27
29. circuit breaker Use this dealer seller a qualified electrician appliance on a dedicated circuit or an Authorized Service Center There is risk of fire or electric Do not disassemble or repair the There is risk of fire or electric shock product There is risk of fire or shock electric shock Install the panel and the cover Always install a dedicated cir Use the correctly rated break of control box securely cuit and breaker er or fuse There is risk of fire or electric e Improper wiring or installation may There is risk of fire or electric shock cause fire or electric shock shock Wall Mounted Multi Zone Split System Air Conditioner Safety Precautions 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 Sharp edges could cause injury There is risk of fire electric shock explosion or injury Be especially careful of the case explosion or injury edges and the fins on the con denser and evaporator Do not install the productona Be sure the installation area Do not let the air conditioner defective installation stand does not deteriorate with age for along time when the humidity is very high and a door or a window is left open It may cause injury accident or If the base collapses
30. each pipe each pipe indoor uitand between indoor A B A B C A B C A B C outdoor unit h1 units h2 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 m 10 ft 7 5 m 25 ft 7 5 m 25 ft 36 kBtu 45 m 150 ft 15 m 50 ft 3 m 10 ft 7 5 m 25 ft 7 5 m 25 ft Pipe Size Indoor Capacit iti ee Gas Liquid Standard Length paon efrigerant 9 kBtu 9 52 mm 3 8 6 35 mm 1 4 7 5 m 25 ft 20 g m 0 22 oz ft 12 kBtu 9 52 mm 3 8 6 35 mm 1 4 7 5 m 25 ft 20 g m 0 22 oz ft 18 24 kBtu h CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability 21 36 kBtu h Installation Installing Installation Plate 5t The wall you select should be strong and solid enough to prevent 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 installation plate horizontally by aligning the centerline using a level Measure the wall and mark the centerline It is also important to use caution regarding the location of the installation plate as routing the wiring through the wall is typically done in this application Drilling the hole through f the for piping connections must be done safely Distance mm D Xx B A B C D 9 k
31. 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 indoor air con ditioner s display If more than two problems occur simultaneously one error code of most severity is displayed After an error has occurred if the error is fixed cleared the LED display representing the error code shown in the table below will also be cleared simultaneously To operate the unit after the occurrence of an error code it is best to power off the unit and then power on again LED1 LED2 Indoor Error Error code Description MPS Variable LED1 LED2 Indoor Status 00 No Error ON 01 Indoor Room Thermistor Error 1 time OFF 02 Indoor In Piping Error 2 times Q OFF 05 Communication Error between In and Out 5 times OFF 06 Indoor Out Piping Error 6 times OFF 07 Differnt mode operation 7 times Q OFF 10 Indoor fan motor locked error 1 times OFF Outdoor Error Error code Description MPS Variable LED1 Red LED2 Green Indoor Status 33 D Pipe High Normal times 3 times OFF 44 Outdoor Air Thermistor Error Open Short 4 times 4 times OFF 45 Cond Pipe Thermistor Error Open Short 4 times 5 times OFF 47 Const D Pipe Thermistor Error Open Short 4times 7 times OFF 51 Capcit
32. indoor Fan does not operate Does the voltage of each terminals of CN MOTOR CONNECTOR Indoor unit corresponds to values in the Table of page 70 Does the voltage of terminal of CN DC DC CONNECTOR in Indoor unit that corresponds to the values in the table of page 70 Check connection condition of the CN MOTOR CON NECTOR lt gt Does the voltage of terminal of CN DC DC CONNECTOR in Outdoor unit corresponds to the values in the table of page 70 Check the pattern and the condition of Indoor unit PCB Ass Check for any interference of Indoor Fan Check the patterns and the conditions of outdoor unit PCB Assy s Check the condition of con necting wires between Indoor and Outdoor unit Check the motor of Indoor Fan Indoor Fan be off in the Soft Dry Mode change to the Cooling Operation Mode Indoor Fan is off when Indoor pipe coil termperature is lower than 79 F At that time the defrost indicator is turn on 69 Service Manual Troubleshooting Guide Voltage of Connectors according to Indoor Fan Speed INDOOR PWB ASSY CN MOTOR CN DC DC Indoor Connecting Terminal Connecting wires between Indoor and Outdoor Outdoor Connecting Terminal Input Power O 3 4 RY COMP A EL e 3 4 N
33. of Indoor Unit The wiring for the outdoor unit can be found on the inside of the Outdoor Unit control cover WARNING The circuit diagram is subject to change without notice Be sure to connect wires according to the wiring diagram Connect the wires firmly so that they can not be pulled out easily Connect the wires according to color codes by referring to the wiring diagram WARNING Provide a circuit breaker between power source and the outdoor unit as shown below Main power source Circuit Breaker Use a circuit breaker or time delay fuse Air Conditioner WARNING The power cord connected to the outdoor unit should comply with the following specifica A tions ETL recognized and CSA certified 18 24 kBtu h 36 kBtu h AWG 12 Allowable temperature to the wire rated at least 90 Line voltage 208 230V Line voltage 208 230V The power connecting cable connected to the indoor and outdoor unit should comply with the following specifications ETL recognized and CSA certified AWG18 Low voltage below 40V i Om WARNING When using the separate wires as the power cord please secure the separate wires into A the control box panel using tie wraps to hold all wires together in place 31 Service Manual Connecting the Cable between Indoor Unit and Outdoor Unit 1 Remove the control cover from the unit by loosening the screw Connect the wir
34. that heat radia tion from the condenser is not restricted 2 Ensure the unit is unobstructed allow proper space on all sides according to the arrows and distance measurements in the figures 3 Do not place animals and plants in the path of the warm air 4 Take the air conditioner weight into account and select a place where noise and vibration are mini mum 5 Select a place so that the warm air and sound from the air conditioner does not disturb neighbors Rooftop Installations If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting More than 10 cm 3 9 inch More than 2 4m 8 ft 1 More than 20 7 9 inch 1 More than 10 3 9 inch 18 24 kBtu h more than 30 cm 11 8 inch more than 70 lt 27 6 more than 30 11 8 inch more than 60 cm 23 6 inch 36 kBtu h more than 30 cm 11 8 inch more than 70 27 6 nl A more than 30 cm 11 8 inch A 60 23 6 inch Wall Mounted Multi Zone Split System Air Conditioner 20 Piping lenc Multi Piping Type Max total length Max length of Min length of Max elevation Capacity of all pipes
35. the high or medium according to the intake air temperature and the set point temperature Airflow Speed Selection The airflow speed of the indoor fan is set to high medium low or power 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 f the appliance is operating at the time set by the timer the operation continues While in Fuzzy operation the airflow speed of the indoor fan is automatically selected according to the temperature E 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 43 Service Manual e If the appliance is paused the time set by the timer the pause continues Off Timer lt gt 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 15 carried out according to the set time Sleep Timer Operation When the sleep time is reached after lt 1 2 3 4 5 6 7 0 cancel hr is input by the remote control while in appli ance operation the operation of the appl
36. the valve Pressure 5 3 Loosen the charge hose connected to the gas side service gauge port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side ser vice port and fasten the flare nut securely with an adjustable wrench This process is very important to pre vent leakage from the system Open Close 5 Replace the valve caps at both gas and liquid side service valves and fasten them tight E 2 This completes air purging with vacuum pump The air conditioner is now ready for test running Vacuum pump NOTICE Repeat evacuation procedure for each indoor unit Wall Mounted Multi Zone Split System Air Conditioner 38 Charging Charging W Each outdoor unit is factory charged see rating plate for the evaporator as well as 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 be adjusted Whether the line set is made shorter or longer you must adjust the charge based how many m ft of tubing are either added or removed based on 209 0 220z of R 410A per meter foot Max Elevation Capacity Btu h We Slee Max length of Min length of between each indoor boils Additional A B each pipe A B each pipe A B unit k unit units h2 Refrigerant 1
37. 0 Fins per inch 18 18 No of Rows amp Column No 2R 48C 2R 48C Fan motor Model ARC286B01 2 ARC286B01 2 Output 102 102 Capacitor 2 370 2 370 Propeller Propeller No Used Diameter EA inch mm 2 15 7 400 2 15 7 400 Discharge Side Top Side Side Air Circulation Outdoor CFM CMM 2225 63 2225 63 Noise Level H L at 230V Sound Press 1m dB A 1 51 51 SVC Valve Liquid inch mm 1 4 6 35 1 4 6 35 SEA Gas 3 8 9 52 SEA 3 8 9 52 Dimensions W H D inch mm 34 3 40 7 12 6 870 1038 320 34 3 40 7 12 6 870 1038 320 Net Weigh Outdoor Ibs kg 185 2 84 185 2 84 Max Interunit Piping Length Total of Each Room ft m 147 6 45 147 6 45 For One Room ft m 49 2 15 49 2 15 Max Installation Indoor Unit Outdoor Unit ft m 24 6 7 5 24 6 7 5 Height Difference Indoor Unit Indoor Unit ft m 24 6 7 5 24 6 7 5 Packing Dimension W H D inch mm 41 3 44 9 17 3 1048 1140 439 41 3 44 9 17 3 1048 1140 439 Stuffing Quantity 20 40ft 53 111 53 111 13 0 13 0 HSPF 77 Note 1 Capacities are based on the following conditions Cooling Indoor Temperature 26 7 C 80 F DB 19 4 C 67 F WB Outdoor Temperature 35 C 95 F DB 23 9 C 75 F WB Heating Indoor Temperature 21 1 C 70 F DB 15 6 C 60 F WB of improvement 2 Wiring cable size must comply with the applicable local and national code Outdoor Temperature 8 3 C 47 F DB 6 1 C 43 F WB Piping Length
38. 3 Ensure the difference between the intake temperature and the discharge is more than 8 C 14 4 F Cooling or reversely Heating Refrigerant Outside ambient The pressure of the gas side TEMP service valve 410 35 C 95 F 8 5 9 5kg cm G 120 135 5 1 8 Intake temperature Discharge air Discharge temperature 40 Operation 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 off when sleep timer mode is canceled or appliance operation is paused Timer Indicator On while in timer mode on off off when timer mode is completed or canceled Defrost Indicator Off except when units is in hot start mode heat pump model only while unit is running in defrost control mode Cooling Mode Operation When the intake air temperature reaches 0 5 C 0 9 F below the set point temp the compressor and the out door fan stop When it reaches 0 5 C 0 9 F above the set point temp they start to operate again Compressor ON Temp gt Set point Temp 0 5 C 0 9 F Compressor OFF Temp gt Set point Temp 0 5 C 0 9 F While the compressor is running operating with the airflow speed set
39. 8k 30m 100ft 15m 50ft 3m 10ft 7 5m 25ft 7 5m 25ft 20g m 0 220z ft 24k 30m 100ft 15m 50ft 3m 10ft 7 5m 25ft 7 5m 25ft 209g m 0 2202 ft Max total length Max length of Min length of b Ps 42 bal Max elevation Additional Capacity Btu h of all pipes each pipe each pipe outdoor uni between indoor Relrigerant A B C A B C A B C ih units h2 9 36k 45m 150ft 15m 50ft 3m 10ft 7 5m 25ft 7 5m 25ft 209 m 0 2202 ft Example A 80ft line set is used for tri zone an additional 5 ft X 0 22 ounces per foot add 1 1 ounces of R 410A Important If you are ever uncertain of the unit charge reclaim evacuate and weigh in the correct charge using the charge amount speci fied on the unit s rating plate adjusting for line sets longer or shorter than 7 5m 25ft for each indoor unit Unit is critically charged 39 Service Manual Test Running Test Running Split Type 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 to the arrow direction Insert new batteries making sure that the and of battery are installed correctly Reattach the cover by pushing it back into position NOTE Use 2 AAA 1 5volt batteries Do not use rechargeable batteries Remove the batteries from the remote controller if the sys t
40. AA 1 5V Be sure that the and directions are correct Be sure that both batteries are new 4 Re attach the cover Slide it back into position 29 Service Manual Flaring Work and Connection of Piping Outdoor Align the center of the piping and sufficiently tighten the flare nut by hand Finally tighten the flare nut with torque wrench until the wrench clicks Outdoor unit When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow the wrench Outside diameter Torque mm inch kg m Ibf in Gas side piping 06 35 1 4 1 8 156 2 09 52 3 8 4 2 364 5 iquid side piping Outdoor unit 36 kBtu h N A UNIT Gas side piping Torque wrench Wall Mounted Multi Zone Split System Air Conditioner 30 Connecting the Cable between Indoor Unit and Outdoor Unit Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according 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 ground wire should be longer than the common wires The circuit diagram is subject to change without notice When installing refer to the electrical diagram behind the front panel
41. Btu h 50 1 97 105 4 13 59 2 32 105 4 13 Cel Dorm 12kBtuh _ 65 2 56 110 4 33 85 3 35 110 4 33 Fett reor piping Right rest piping Drilling the hole in the w Drill the piping hole with a 70 mm 2 75 inch hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side WALL 1 5 7 0 2 0 3 Wall Mounted Multi Zone Split System Air Conditioner 22 Flaring Work and Connection of Piping Flaring Work and Connection of Piping 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 and the outdoor unit 3 Cut the pipes a little longer than measured distance 4 Cut the cable 1 5m 5 0ft longer than the pipe length Burrs removal 1 Completely remove all burrs from the cut cross 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 Adding the Flare Nut Remove flare nuts attached to the indoor and outdoor unit then put them on the end of the copper pipe once you hav completed burr removal it is not possible to put them on after the flaring work Flaring work Carry out flaring work using flaring
42. C 80 6 F it operates at low speed When the indoor pipe temp is between 20 C 68 F and 27 C 80 6 F it 41 Service Manual operates except 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 While in defrost mode the indoor and outdoor fans are turned off Defrost Control Heating While in defrost mode the indoor and outdoor fans are turned off Defrost operation is controlled by timer and sensing temperature of the outdoor pipe first defrost cycle starts only when the outdoor pipe temperature falls below 6 C 21 2 F after 35 min utes has passed from the start of the heating operation and more than 4 minutes since the last of operation of the compressor Defrost ends after 12 minutes passed from starting of defrost operation when the outdoor pipe temperature rises over 15 C 59 F even before 12 minutes The second defrost cycle starts only when the outdoor pipe temperature falls below 6 C 21 2 F after 35 min utes passed from ending the second defrost cycle and more than 4 minutes since the last operation of the compressor Fuzzy Operation When the unit is turned on and an operation mode has not been selected after 3 hours has passed the opera tion mode will be automatically selected vi
43. ER1 CN POWER2 4WV AWAY VALVE too FMo FAN MOTOR BL mp HP HIGH PRESSURE SWITCH A MRA12124 12026 OLP_B MRA98996 12026 SUBPCBASSY IGNYL 3854A24002M THERMISTOR PIPE THERMISTOR AIR THERMISTOR DISCHARGE1 THERMISTOR DISCHARGE2 1000 9000 000 9 0 55 Service Manual Schematic Diagram 3 A MMC24FA 1 TM POWER OUTDOOR WIRING DIAGRAM BK LEV LEV OG L1 POWER SUPPLY K WH 00001 00000 CNLEV A CN LEV B gt L2 TM PILLAR nid TO RY COMP A 3 RY COMP B 35 54 F1 INDOOR UNIT A CN COM 1 TO MAIN PCB ASSY INDOOR UNIT B AAAA AAAA CN COM 2 F1 FUSE 250V T2 5A Co CAPACITOR TM TB TERMINAL BLOCK CN CONNECTOR RY RELAY AWV 4WAY VALVE FMo FAN MOTOR HP HIGH PRESSURE SWITCH _ MRA12105 12026 OLP_B MRA98996 12026 5 A MMC36FA 1 TM POWER i CN RY SV CN TH1 CN POWER1 CN POWER2 OO tog BK too ES SUB PCB ASSY OCN_TABI N OUTDOOR WIRING DIAGRAM BK LEV LEV
44. HEAT CONTROLLER INC Wall Mounted Multi Zone Split System Air Conditioning Heat Pump PHacaatl Model Indoor Unit B MMCO9FA 1 B MMHO9FA 1 B MMC12FA 1 B MMH12FA 1 Outdoor Unit A MMC18FA 1 A MMH18FA 1 A MMC24FA 1 A MMH24FA 1 A MMC36FA 1 A MMHS6FA 1 CAUTION Before servicing the unit read the safety precautions in this manual Only for authorized service personnel Wall Mounted Multi Zone Split System Air Conditioner Service Manual TABLE OF CONTENTS Combination tabla et e e eU ata Me 3 Safety E 4 Seaside applications and installation 10 DIimehsliorns ace Lc EA PLA iL b Ed 11 Indoor ree du uod c duis RE 11 EE arene ne 12 Product Sp cifications 15 rr 15 16 ec e 19 19 Installation 19 Selecting the best location 20 Piping length and elevation et owen dade lene 21 Installing installa
45. LEV A CN LEV B 37 74 BR BK 3 4 INDOOR UNIT A CN COM 1 TO INDOOR UNIT B MAIN PCB ASSY 2 CN RY SV F1 FUSE 250V T2 5A TET EE od Co CAPACITOR THERMISTOR AIR TM TB TERMINAL BLOCK j f RY RELAY CN POWERI CN POWER2 ed FMo FAN MOTOR BK HIGH PRESSURE SWITCH IR EE A MRA12124 12026 Oon uy OLP B MRA98996 12026 SUB ASSY 3854A24002N THERMISTOR DISCHARGE1 THERMISTOR DISCHARGE2 MAIN PWB ASM CN U D CN L R CN DISP1 CN DISP2 1 ICN 12V CN HVB DISPLAY PWB ASM 3854A23010A 2 A MMH18FA 1 OUTDOOR WIRING DIAGRAM TB A B BK POWER SUPPLY 60609 00009 CN LEV A CN LEV B 3 4 BK TO INDOOR UNITA 35 54 CN COM 1 MAIN PCB ASSY MR CN FAN E 4WV F1 FUSE 250V T2 5A CAPACITOR TERMINAL BLOCK CONNECTOR CN TH1 RY RELAY CN POW
46. a fuzzy operation 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 75 2 F lt Intake Air Temp 2 Fuzzy Operation for Cooling 21 C 69 8 F lt Intake Air Temp lt 24 C 75 2 F gt Fuzzy Operation for Dehumidification Intake Air Temp lt 21 C 69 8 F gt Fuzzy Operation for Heating However if any of the operation modes among cooling dehumidification heating mode operations has been carried out for 10 sec or longer before Fuzzy operation the last mode that the unit operated in will be automati cally selected 1 Fuzzy Operation for Cooling 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 point temp the compressor is turned on Compressor ON Temp gt Set point Temp 0 5 C 0 9 F Compressor OFF Temp gt Set point Temp 0 5 C 0 9 F At the beginning of Fuzzy mode operation the set point temperature is automatically selected according to the intake air temp at that time 26 C 78 8 F s Intake Air Temp 2 25 C 77 F 24 C 75 2 F s Intake Air Temp lt 26 C 78 8 F gt Intake Air Temp 1 C 1 8 F 22 C 71 6 F s Intake Air Temp lt 24 C 75 2 F gt Int
47. ake Air Temp 0 5 C 0 9 F 18 C 64 4 F lt Intake Air Temp lt 22 C 71 6 F gt Intake Air Temp Intake Air Temp lt 18 C 64 4 F 2 18 C 64 4 F When the Fuzzy key Temperature Control key is input after the initial set point temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the set point temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan is automatically selected according to the temper ature Wall Mounted Multi Zone Split System Air Conditioner 42 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 point temp the compressor is turned on Compressor ON Temp gt Set point Temp 0 5 C 0 9 F Compressor OFF Temp gt Set point Temp 0 5 C 0 9 F At the beginning of Fuzzy mode operation the set point temperature is automatically selected according to the intake air temp at that time 26 C 78 8 F lt Intake Air Temp 2 25 C 77 F 24 C 75 2 F lt Intake Air Temp lt 26 C 78 8 F gt Intake Air Temp 1 C 1 8 F 22 C 71 6 F lt Intake Air Temp lt 24 C 75 2 F 2 Intake Air Temp 0 5 C 0 9 F 18 C 64 4 F lt Intake Air Temp lt 22 C 71 6 F gt I
48. can cause the conden sation to overflow in the drain pan inside the indoor unit CAUTION If the drain hose is routed inside the room insulate the hose with an insulation material so that dripping from sweat ing condensation will not damage furniture or floors Foamed polyethylene or equivalent is recommended Connecting cable Wall Mounted Multi Zone Split System Air Conditioner 24 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 the indoor unit with the upper edge of the installation plate Ensure that the hooks are properly seated on the installa tion plate by moving the indoor unit left and right Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots clicking sound Connecting the piping to the indoor unit and drain hose to drain pipe 1 Align the center of the pipes and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a torque Outside diameter Torque mm inch Ibf in 26 35 1 4 1 8 156 2 09 52 3 8 4 2 364 5 3 Next extend the indoor unit s drain hose Then attach the drain pipe Wrap the insulation material around the all connections 1 Overlap the connection pipe insulation material and the indoor unit pipe
49. e Manual 2 way 3 way Valve 2 way 3 way Valve 2 way Valve Liguid Side 3 way Valve Gas Side Hexagonal wrench 4mm Open position Closed position Flare nut To piping connection To outdoor unit piping connection Service Service port cap port Open position Closed position To outdoor unit Control Mechanism Shaft position Shaft position Service port Factory Setting Closed Closed Closed with valve cap with valve cap with cap Air purging Open Closed Open 1 Installation counter clockwise clockwise push pin or with vacuum pump Operation Open Open Closed with valve cap with valve cap with cap 2 Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Open Open 3 Servicing with charging cylinder Gas charging Open Open Open 4 Servicing with charging cylinder Pressure check Open Open Open 5 Servicing with charging cylinder Gas releasing Open Open Open 6 Servicing with charging cylinder Wall Mounted Multi Zone Split System Air Conditioner 76 2 way 3 way Valve 1 Pumping down Liquid side Indoor unit Outdoor unit Close 2 Way valve Gas side 3 Way valve Liquid side Indoor unit 2 Way valve Gas side 3 Way valve manifold gauge
50. e priority When the Jet Cool key is input the upper lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further Auto Restarting Operation When the power is restored after a sudden power failure the appliance is in operation the mode before the power failure is kept in the memory Because of this feature the appliance automatically operates in the mode on the memory Wall Mounted Multi Zone Split System Air Conditioner 44 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 operation position or the Auto Restart or test operation position or switched from the remote control position to the forced operation position while the power is on the forced operation is carried out When the slide switch position 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 operation mode the indoor fan is operated at low speed for 15 sec and then the operation condi tion is set according to the intake air temperature as follows 24 C 43 2 F lt Intake Air Temp gt Cooling Mode Ope
51. ease installation and will be removed later on per the installation instructions Connecting the piping to the indoor unit and the drain hose to drain pipe 1 Align the center of the pipes and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a wrench Outside diameter Torque mm inch kg m Ipf in 26 35 1 4 1 8 156 2 29 52 3 8 4 2 364 5 3 Next extend the indoor unit s drain hose Then attach the drain pipe Wall Mounted Multi Zone Split System Air Conditioner Indoor unit tubing Flare nut Pipes Adhesive Vinyl tape narrow 226 Flaring Work and Connection of Piping 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 vinyl tape so that there is no gap 2 Wrap the area which accommodates the rear piping hous ing section with vinyl tape 3 Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which they fit into the rear piping housing 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 installa tion plate by moving it left and right 3 Press the lower left and right sides of the unit against the i
52. ectly It can result corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunc tion or inefficient performance 3 If outdoor unit is installed close to the seaside it should avoid direct exposure to the sea wind Selecting the location Outdoor Unit 1 If the outdoor unit is to be installed close to the seaside direct exposure to the sea wind should be avoided Install the outdoor unit on the opposite side of the sea wind direction Sea wind Sea wind 2 To install the outdoor unit on the seaside set up a windbreaker barrier to keep the unit from being exposed to the sea wind It should be strong enough like concrete to obstruct the wind from the sea The height and width should be more than 15096 of the outdoor unit A minimum of 70cm 27 6inches of space between outdoor unit and the windbreaker barrier for easy air flow Windbreaker Barrier Sea wind 3 Select a well drained place 1 Periodic more than once year cleaning of dust or salt particles stuck on the heat exchanger using water is recommended Wall Mounted Multi Zone Split System Air Conditioner 10 E Dimensions E Dimensions Split Type Indoor Model Split Type Dimension 9 kBtu h 12 kBtu h 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 11 Service Manual
53. ectric shock Be cautious that water can never enter the product There is risk of fire electric shock or product damage Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock Wall Mounted Multi Zone Split System Air Conditioner Turn the main power off when cleaning or maintaining the product There is risk of electric shock Safety Precautions When the product is not being used for a long time Take care to ensure that nobody could step on disconnect the power by turning off the breaker or fall onto the outdoor unit There is risk of product damage or failure or unintend This could result in personal injury and product dam ed operation age Bi installation Always check for gas refrigerant leak Install the drain hose to ensure that Keep level even when age after installation or repair of product water is drained away properly installing the product Low refrigerant levels may cause bad connection may cause water avoid vibration or water leak failure of product leakage age Do not install the product Use two or more people to lift not install the product where the noise or hot air and transport the product where it will be exposed to from the outdoor unit could sea wind salt spray directly offend neighbors It may cause a problem for your Avoid personal i
54. em is not going to be used for a long time 2 Precautions in test run W The initial power supply must provide at least 90 of the rated voltage Otherwise the air conditioner should not be operated W First operate the unit in cooling even if you are test ing the unit in the winter heating season Operating the unit in heating first during the test run can cause compressor trouble Carry out the test run more than 5 minutes without failure Test run will be cancelled 18 minutes later automatically The test run is started by pressing timer cancel button five times continuously To cancel the test run press any button 3 Settlement of outdoor unit Anchor the outdoor unit with a bolt and nut 10mm 0 4inch tightly and horizontally on a con crete or rigid mount When installing on the wall roof or rooftop anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake If the vibration from the unit is being transferred to the indoor unit via the connection of the condensation hose and or copper tubing secure the outdoor unit with anti vibration rubber grommets Wall Mounted Multi Zone Split System Air Conditioner 4 Evaluation of the performan eng connection Operate unit for 15 20 minutes then check the system refrigerant charge 1 Measure the pressure of the gas side service valve 2 Measure the temperature of the intake and discharge of air
55. es at High or Off to respond to the load condition R Valve Control Heating Model Only Reversing valves is used to change cooling to heating heating to cooling Defrost Function After 45 minutes in heating mode defrost mode will take effect if the outdoor pipe temp is below 5 C 23 F The defrost mode will end when the outdoor pipe temp is above 12 C 53 6 F or after the unit has been operated in cooling mode for 9 minutes To de ice the outdoor heat exchanger in low temperature conditions the unit will defrost by changing the operating mode from heating to cooling while turning off both indoor and outdoor fans Oil Return System single one compressor operation duration another compressor will operate for 30 seconds every 1 hours compressor Overload Protection To protect compressor from being overloaded the compressor overload protector will turn the compressor off High Pressure Protction f the refrigerant 5 pressure is too high above 36 7 kgf cm 521 997psi the high pressure switch will turn the compressor off 47 Service Manual The Remote Controller transmits the signals to system P Signal transmitter DAILY 18 88 5 1 6 3 4 2 10 ye OCANCEL 7 9 ON D OFF QSET 11 AUTOCLEAN 12 650 5 CF 16 13 RESET 14 pom Flip up door
56. es to the terminals on the control board individually as the following 2 Secure the cable onto the control board with the holder clamper 3 Re attach the control cover to the original position using the screws 18 kBtu h Teminal on the Indoor Unit Teminal on the Indoor Unit A UNIT B UNIT LETS jm cabe Low volage Teminal on the Outdoor Unit Teminal on the Outdoor Unit cq A Indoor B Indoor Ee Power Source 208 230V AC High voltage 24 kBtu h Teminal on the Indoor Unit Teminal on the Indoor Unit A UNIT B UNIT 1 2 Indoor Indoor Power Source 208 230V AC High voltage 36 kBtu h Teminal on the Indoor Unit Connecting cable Low voltage 2 1 2 3 4 1121314 Teminal on the Outdoor Unit Teminal on the Outdoor Unit Teminal on the Outdoor Unit Outdoor unit Terminal block Over 5mm 0 2inch Holder for power supply cord Control cover Connecting cable Teminal on the Indoor Unit A UNIT 12 112 4 1 2 3 4 1 t t t A Indoor B Indoor Power Source 208 230V AC High voltage 1 Separately wire the high and low voltage lines C Indoor Teminal on the Outdoor Unit
57. iance stops While the appliance is paused the sleep timer mode cannot be input While in cooling mode 30 min later the start of the sleep timer the set point temperature increases by 1 C 33 8 F After another 30 min elapse it increases by 1 C 1 8 F again When the sleep timer mode is input while in cooling mode the airflow speed of the indoor fan is set to the low When the sleep timer mode is input while in heating 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 Chaos Natural Wind Mode When the Chaos Natural Wind mode is selected and then operated the high medium or low speed of the air flow mode is operated for 2 15 sec randomly by the Chaos Simulation Jet Cool Mode Operation While in heating mode or Fuzzy operation the Jet Cool key cannot be input When it is input while in cooling dehumidification ventilation the Jet Cool mode is operated In the Jet Cool mode the indoor fan is operated at super high speed for 30 min in cooling mode In the Jet Cool mode operation the room temperature is controlled to the set point temperature 18 C 64 4 F When the sleep timer mode is input while in Jet Cool mode Jet Cool mode has th
58. insulation material Bind them together with vinyl tape so that there is no gap 2 Wrap the area which accommodates the rear piping hous ing section with vinyl tape 3 Bundle the piping and drain hose together by wrapping them with vinyl tape enough to cover where they fit into the rear piping housing section 25 Connecting cable t Drain hose Indoor unit tubing Flare nut Pipes Adhesive Vinyl tape narrow Plastic bands Insulation material 27 Connection unit pipe Vinyl tape wide Wrap with vinyl tape Connecting cable Pipe Vinyl tape narrow Wrap with vinyl tape Drain hose Service Manual Flaring Work and Connection of Piping For left rear piping 1 Route the indoor tubing and the drain hose to the required piping hole position 2 Insert the piping drain hose and the connecting cable into the piping hole 3 Insert the connecting cable into the indoor unit Don t connect the cable to the indoor unit Make small loop with the cable for easy connection later 4 Tape the drain hose and the connecting cables 5 Indoor unit installation Hang the indoor unit from the hooks at the top of the installation plate Insert the spacer between the indoor unit and the instal lation plate to separate the bottom of the indoor unit from the wall The spacer is used to
59. itioner 16 Product Specifications Model A MMC24FA 1 A MMH24FA 1 Cooling Capacity Btu hr 24 000 24 000 w 7 033 7 033 kcal hr 6 037 6 037 Heating Capacity Btu hr 24 000 w 7 033 keal hr 6 037 Cooling 2 526 2 526 Heating Ww H 2440 Running Current 208 230V Cooling A 11 4 11 4 Heating A 114 Power Supply O V Hz 1 208 230 60 1 208 230 60 Max Number of Connectable Indoor Units 2 2 Compressor Type Rotary Rotary Constant Model GK094K GK094K Motor Type Hermetic Hermetic Quantity Ea 1 1 Motor Input 955 955 Oil Charge cc 330410 330410 Oil Type FVC68D FVC68D Capacitor 30 370 30 370 O L P Type model name External Type MRA98996 12026 External Type MRA98996 12026 Compressor Type Rotary Rotary Constant Model GK141K GK141K Motor Type Hermetic Hermetic Quantity Ea 1 1 Motor Input 1430 1 430 Oil Charge cc 350 10 350 10 Oil Type FVE FVE Capacitor 35 370 35 370 O L P External Type MRA12105 12026 External Type MRA12105 12026 Refrigerant charge Charge oz g 56 4 1 600 56 4 1 600 Type R410A R410A Control EEV EEV Coil Tube Size OD inch mm 0 276 7 0 0 276 7 0 Fins per inch 18 18 No of Rows amp Column No 2R 36C 2R 36C Fan motor Model IC 1640LG
60. l 2 way 3 way Valve 2 Evacuation All the refrigerant leaked NW side Open Outdoor unit 2 Way valve 1 NW Y Gas side NW side manifold gauge S Q 1 aee lt c 8 3 Low handle OPEN M 1 Confirm that both the side valve and gas 6 Disconnect the charge hose from the vacuum side valve are set to the opened position pump If the vacuum pump oil becomes dirty or deplet ed replenish as needed 7 Replace the valve and service port caps 2 Connect the vaccum pump to the center hose of the manifold gauge 3 Connect the service port of the gas side valve to the low side of the gauge 4 Evacuate for approximately one hour Confirm that the gauge needle has moved toward 76 cmHg vacuum of 4 mmHg or less 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 off the vacuum pump Wall Mounted Multi Zone Split System Air Conditioner 78 3 Gas Charging After Evacuation 2 way 3 way Valve Indoor unit Liquid side 2 Way valve Outdoor unit
61. ll condition for over load 2 Check is the Service Valve SVC V V is open 3 Check for leakage of refrigerent 4 Check the constant compressor Error code Description Cause of error Check point amp Normal condition Over Capacitor com Check the indoor unit capacity 1 it a VRpRCITOESITOE bination Check the combination table Check Point 1 Check the indoor unit capacity 2 Check the combination table single cycle has no error for over capacity Wall Mounted Multi Zone Split System Air Conditioner 74 Troubleshooting Guide glos Description Cause of error Check point amp Normal condition Open Short T oC 770 Normal resistor at 25 77 Unplugged 44 Outdoor air sensor Soldered poorly Normal voltage 2 5Vdc at 25 C 77 F plugged Internal circuit error Open Short 3 Normal resistor 5KQ at 25 C 77 F Unplugged 45 Condensor pipe sensor Normal voltage 2 5Vdc at 25 C 77 F plugged Internal circuit error Open Short UNE 47 D Pipe sensor Soldered poorly Vilis E 2 Internal circuit error Und 77 F plugged Check Point 1 Estimate the resistance of each sensor Unplugged Check the resistance 2 Estimate the voltage of each sensor Plugged 3 If the resistance is OV or 5Vdc then sensor is abnormal 75 Servic
62. n is disconnected 05 53 Communication The connecting wires are misconnected Indoor gt Outdoor Poor Communication The GND 1 2 is not connected at main GND The communication line is shorted at GND Transmission circuit of outdoor PCB is abnormal Transmission circuit of indoor PCB is abnormal Check Point 1 Check the input power AC 230V Outdoor Indoor 2 Check that the communication wires are correctly connected gt Adjust the connection of wire 2 Confirm the Live Neutral wires Check the resistance between communication line and GND Normal Over 2MQ Check the connector for communication is correctly connected Check the connection of GND1 GND2 and main GND If one indoor unit is operating normally outdoor PCB has no problem gt Check the other indoor unit 5 is displayed at indoor unit CH53 is displayed at outdoor unit 73 Service Manual Troubleshooting Guide E Description Cause of error Check point amp Normal condition Check the discharge pipe sensor Discharge sensor Check the install condition for over load 33 D Pipe Temp High m temp high Check for leakage of refrigerent Check is the Service Valve SVC V V is open cour ort 115 C 239 F LEV OPEN 16PULSE MIN 100 C 212 F LEV OPEN 10PULSE MIN 95 C 203 F NORMAL Check Point 1 Check the insta
63. n the main power d Operate Cooling Mode by setting the disired temperature of the remote controller to less than one of the Indoor temperature by 1 C 33 8 F at least d When in air circulation mode compressor outdoor fan is stopped d Exchanger Evaporator Check that the sensor for Indoor temperature is attatched and as close as to the Heat d not engaged Compressor Outdoor fan is stopped 5 9 2 When the sensor circuit for Indoor temperature and connector have a bad connection or are Check the related circuit of RO1H 1K RO2H 1K RO3H 1K RO4H 1K Micom pin 7 Check that the Indoor temperature sensor is disconnected about 10K at 25 C 77 F d Check the Relay RY PWR RY START for driving Compressor Check the voltage between brown and blue cable of terminal which connects to the Outdoor unit About AC208V 230V Check the Outdoor PCB Assembly s relay circuit Check Point Comp ON Comp OFF Between Micom No 50 51 and DC 5V DC GND Between ICO1M No 10 and DC 1V DC 12V GND d Turn off main power su Check the electrical wiring diagram of Outdoor side Check the open or short of connecting wires between Indoor and Outdoor Wall Mounted Multi Zone Split System Air Conditioner 68 Troubleshooting Guide 777175 When indoor Fan does not operate When
64. ng Do not drink the water drained from the product e There are sharp and moving parts that could cause personal injury It is not sanitary and could cause serious health issues Wall Mounted Multi Zone Split System Air Conditioner Safety Precautions Use a firm stool or ladder when cleaning or Replace the all batteries in the remote control maintaining the product with new ones of the same type Do not mix old and new batteries or different types of bat teries Be careful and avoid personal injury There is risk of fire or explosion Do not recharge or disassemble the batteries If the liquid from the batteries gets onto your Do not dispose of batteries in a fire skin or clothes wash it well with clean water Do not use the remote if the batteries have leaked They may burn or explode The chemicals in batteries could cause burns or other health hazards If you ingest the liquid from the batteries call your local poison control center or a doctor Do not use the remote is the batteries have leaked The chemicals in batteries could cause burns or other health hazards 9 Service Manual Seaside applications and installation Seaside applications and installation A CAUTION 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 be exposed to sea wind salty wind dir
65. njury may cause corrosion on the neighbors product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation 7 Service Manual Safety Precautions Operational Do not expose the skin direct ly to cool air for long periods of time Don t sit in the draft This could harm to your health Do not block the inlet or outlet of air flow Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigeration system There is risk of damage loss of property It may cause product failure Use a soft cloth to clean Do not use harsh detergents sol vents etc There is risk of fire electric shock or damage to the plastic parts of the product Always insert the filter secure ly Clean the filter every two weeks or more often if neces sary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage Do not touch the metal parts of the product when removing the air filter They are very sharp Do not step on or put anyting on the product outdoor units There is risk of personal injury and failure of product e There is risk of personal injury 2 N FN Do not insert hands or other objects through the air inlet or outlet while the product is operati
66. nstallation plate until the hooks engage into their slots clicking sound 27 Plastic bands Insulation material me i UC CR Connection lt Indoor pipe unit piping Vinyl tape Wrap with vinyl tape wide Pipe Vinyl tape narrow Connecting cable Pipe Drain hose Vinyl tape narrow Wrap with vinyl tape wide Piping for passage through piping hole Connecting cable 1 Drain hose Service Manual Flaring Work and Connection of Piping A CAUTION 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 left may cause damage to the tubing Wall Mounted Multi Zone Split System Air Conditioner 28 Flaring Work and Connection of Piping REMOTE CONTROL PREPARATION OPTIONAL HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES 7 Remove the battery cover from the remote con troller Slide the cover according to the arrow direction Do not use rechargeable batteries such batteries differ from standard dry cells in shape dimensions and per formance Romove the batteries from the remote controller if the air conditioner is not going to be used for a long length of time 2 Insert the two batteries A
67. nstructions How to connect wiring to the terminals and fasten the wire tightly using the screw on the terminal plate How to connect wiring to the terminals For strand wiring 1 Cut the wire end with a wire cutter or wire cutting pliers then strip the insulation to expose the strand wiring about 10mm 3 8 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using a round terminal fastener or pliers securely clamp each stripped wire end with a round terminal 4 Position the round terminal wire and replace and tighten the terminal screw using a screwdriver 33 Lock nut Hole B for sealing Low voltage line Power supply line Conduit panel connecting cable 10 230 208V High voltage Strand wire Round terminal 9 Low voltage Fastening the wire tightly Loosening the terminal block screw Connecting cable Service Manual Connecting the Cable between Indoor Unit and Outdoor Unit CAUTION Provide a circuit breaker between power source and the unit as shown below Main power source Model Power source Fuse or breaker Capacity 18 kBtu h 110 230 208V 20A Conditi Circuit Breaker Use circuit 24 kBtu h 10 230 208V 25 breaker time 36 kBtu h 10 230 208V 40 delay fuse 1 Connect the wires to the terminal
68. ntake Air Temp Intake Air Temp lt 18 C 64 4 F gt 18 C 64 4 F When the Fuzzy key Temperature Control key is input after the initial set point temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the set point temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan repeats the low airflow speed or except in dehu midification mode where the indoor fan may pause 3 Fuzzy Operation for Heating According to the set point temperature selected by Fuzzy rule when the intake air temp is 3 C 37 4 F or more above the set point temp the compressor is turned off When below the set point temp the compressor is turned on Compressor ON Temp gt Set point Temp Compressor OFF Temp gt Set point Temp 3 C 5 4 F At the beginning of Fuzzy mode operation the set point temperature is automatically selected according to the intake air temp at that time 20 C 68 F lt Intake Air Temp gt Intake Air Temp 0 5 C 0 9 F Intake Air Temp lt 20 C 68 F D 20 C 68 F When the Fuzzy key Temperature Control key is input after the initial set point temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the set point temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan is set to
69. o of pins DC Voltage 10 Hi Med Low INDOOR CN MOTOR 25 17 17 28 11 97 11 97 INDOOR CN DC DC 25 17 17 28 15 87 15 87 25 17 17 28 Wall Mounted Multi Zone Split System Air Conditioner 70 15 87 15 87 Troubleshooting Guide 3 When Vertical Louver does not operate 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 condition of CN UP DOWN Connector Check the soldering condition on PCB of CN UP DOWN Connector om Check the operating circuit of the Vertical Louver e Confirm that there is DC 12V between pin RED of CN UP DOWN and GND Confirm that there is a soldering short at following terminals Between 69 6 62 and 63 of MICOM Between 3 5 of ICO1M Between 2 43 44 5 of ICO1M Between 1 2 3 4 and s of CN UP DOWN P If there are no problems after above checks Confirm if the assembly parts are catching and interfering in the rotation of the Vertical Louver 71 Service Manual Troubleshooting Guide Trouble Shooting E Description Cause of error Check point amp Normal condition Open Short
70. om temperature RESET BUTTON Used prior to resetting time 2nd F Button Used prior to using modes printed in blue at the bottom of buttons AUTO CLEAN Used to set Auto Clean mode TO SWITCHING BUTTON Used to switch temperature reading from Centigrade to Fahrenheit 48 Disassembly Disassembly E Split Type Indoor Unit A WARNING 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 by finger pressure Remove the securing screws To remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 1 Before removing the control box be sure to take out the wire screwed at the other end 49 Service Manual Disassembly 2 To remove the Control Box Remove securing screws Pull the control box out from the chassis carefully 1 4 3 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 securing the evaporator at the left 2EA in the Evaporator Holder at the right 1 CAUTION Repairing the unit do not damage the Caution label Wall Mounted M
71. oor Unit B kBtu h Total kBtu h 2 Indoor Units 12 12 24 36 kBtu h 3 rooms Combination Indoor Unit A kBtu h Indoor Unit B kBtu h Indoor Unit C kBtu h Total kBtu h 3 Indoor Units 12 12 12 36 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 A This symbol indicates special notes This symbol alerts you to the risk of electric shock This symbol alerts you to hazards that could cause harm to the air conditioner Service Manual Safety Precautions I 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 WARNING This symbol indicates the possibility of death or serious injury ACAUTION This symbol indicates the possibility of injury or damage to properties only Meanings of symbols used in this manual are as shown below 9 sure not to do Be sure to follow the instruction ME A WARNING installation Do not use a defective or under For electrical work contact the Always ground the product rated
72. opened 3 Operation Mode Cooling Operation Jk Us Auto Operation or Auto Changeover A Us Healthy Dehumidification Operation Heating Operation Xt e Cooling Model Heat Pump Model 4 Wall Mounted Multi Zone Split System Air Conditioner 10 11 12 13 14 15 16 CHAOS SWING BUTTON START STOP BUTTON PAR Operation starts when this button is gt pressed and stops when the button is pressed again OPERATION MODE SELECTION BUTTON 5 5 Used to select the operation mode Going Ony ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature lt gt INDOOR SPEED SELECTOR Used to select fan speed in four steps lt gt low medium high and CHAOS JET COOL Used to start or stop the speed cooling heating speed cooling heating operates super high fan speed 0 Used to stop 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 time TIMER SET CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating ROOM TEMPERATURE CHECKING BUTTON Used to check the ro
73. opper piping both indoor and outdoor and both gas and liquid side service valves Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth 2 After the system is found to be free of leaks relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder When the system pressure is reduced to normal disconnect the hose from the cylinder Nitrogen gas cylinder in vertical standing position Service Manual Air Purging and Evacuation 1 Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit Confirm the Lo knob of the manifold valve is open Then run the vacuum pump The operation time for evacuation varies with tubing length and capacity of the pump The following table shows the time required for evacuation Required time for evacuation when 4 CFM vacuum Sutor unii pump is used If tubing length is less If tubing length is longer than 10m 33 ft than 10m 33 ft 10 min or more 15 min or more gt gt MK 2 When the desired vacuum is reached close the Lo knob of the manifold valve and stop the vacuum pump Finishing the job gt With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve 1 Manifold valve 2 Turn the valve stem of gas side valve counter clockwise to ND fully open
74. r transfomer 2 Replace power transfomer 3 Replace ICO1D 4 Replace ICO2D 5 Replace ICO1A Wall Mounted Multi Zone Split System Air Conditioner 66 Troubleshooting Guide Trouble 2 Product doesn t operate with the remote controller Turn on main power uu 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 lI When the compressor is stopped the Indoor Fan is driven by a low speed At this point the fan speed is not controlled by the remote controller When operated in the Sleeping Mode the fan speed is set to the low speed as designed E Caused by the remote controller Caused by other parts except the remote controller When the mark 4 is displayed in LCD Check the contact of CN DISP 1 connector screen replace battery lE lE When the detect switch double key inside the Check DISP PCB Ass y remote controller door is fault it is impossible to Voltage between CN1 DC 45V operate temperature regulating A W and wind speed selecting E l1 Check the Display PCB Ass y Check receiver ass y 67 Service Manual Troubleshooting Guide lt The Compressor Outdoor Fan don t operate Turn o
75. ration 22 C 39 6 F High Speed 21 C 37 8 F lt Intake Air Temp lt 24 C 43 2 F gt Dehumidification Operation 23 C 41 4 F High Speed Intake Air Temp lt 21 C 37 8 F gt Heating Mode Operation 24 C 43 2 F High Speed Buzzer Sound 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 45 Service Manual Split Type Indoor Unit Operation ON OFF by Remote coniroller Sensing the Room Temperature Room temperature sensor THERMISTOR Room temperature control Maintains the room temperature in accordance with the set point Temp Starting Current Control Indoor fan is delayed for 5 seconds at the starting Time Delay Safety Control Restarting is delayed for approx 3 minutes Indoor Fan Speed Control High Med Low Chaos Jet Cool Operation indication Lamps LED D On Off Lights up during the system operation Sleep Mode Lights up during Sleep Mode Auto operation Timer Lights up during Timer operation t Defrost Mode Lights up during Defrost Mode or Hot Start operation Heat pump model only Outdoor unit Lights up during outdoor unit operation Cooling model only operation Desire temperature For cooling dehumidification heating modes it display Destired temperature indicator Cooling 18 30
76. s on the control board individually according to the outdoor unit connection Ensure that the color of the wires of outdoor unit and the terminal No are the same as those of indoor unit respec tively 2 Attach the Grille onto the cabinet Grasp the lower left and right side of the Grille and engage four tabs on the top inside edge of the chassis Press the Grille toward the chassis until it goes back into place Wall Mounted Multi Zone Split System Air Conditioner 34 Checking the Drainage Insulating the Pipe and Special Piping Applications Checking the Drainage Insulating the Pipe and Special Piping Applications 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 ISSN NEN Drain piping 1 The drain hose should point downward for easy drain flow Downward slope 2 See below for examples of incorrect drain pipe applica tions which will cause poor condensate flow Do not raise Accumulated drain water Tip of drain hose Less than dipped in water 50mm gap i Wate Wate Wed SS ater ater ater leakage leakage leakage Ditch 35 Service Manual Checking the Drainage Insulating the Pipe and Special Piping Applications Insulate the piping by wrapping the con necting portion of
77. the air condi Moisture may condense and wet or damage to the product tioner could fall with it causing damage furniture property damage product failure and personal injury Do not allow water to run into not store or use flammable Do not use the product in a electric parts gas or combustibles near the tightly closed space for a long product time may cause There is risk of fire There is risk of fire or failure of Oxygen deficiency could occur failure of the product or electric product shock 5 Service Manual Safety Precautions When flammable gas leaks turn off the gas and open window for ventilation before turn the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire If strange sounds or smoke come from the product turn the breaker off There is risk of electric shock or fire Do not open the inlet grill of the product during operation Do not touch the elec trostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure When the product is soaked flooded or submerged contact an Authorized Service Center There is risk of fire or electric shock Stop operation and close the window in storm or hurricane If possible remove the prod uct from the window before the hurricane arrives There is risk of property damage failure of product or el
78. the indoor unit with Seal any small insulation material and secure it with du _ e piping wi 74 two layers of vinyl tape gum type sealant Taping e If you want to connect an additional drain hose the end U Drain hose of the drain outlet should be routed above the ground Secure the hose appropriately H Connecting In cases where the outdoor unit is installed below the indoor unit perform the following 1 Tape the piping drain hose and connecting cable from downward to upward 2 Secure the taped piping along the exterior wall using e Trap is required to prevent water from entering saddle or equivalent into electrical parts In cases where the Outdoor unit is installed above the Indoor unit perform Seal any small opening the following around the piping 1 Tape the piping and connecting cable from down to up 2 Secure the taped piping along the exterior wall Form Trap trap to prevent water entering the room S 3 Secure the piping onto the wall using saddle equivalent Wall Mounted Multi Zone Split System Air Conditioner 36 Air Purging and Evacuation Air Purging and Evacuation 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
79. tion Plate Standard 22 Drilling the hole in 22 Flaring Work and Connection of 23 18 5 UE E ME ee Ua Reem 23 C nnecting the RIPIN 24 Connecting the Cable between Indoor Unit Outdoor 31 Connect the cable to the Indoor unit 31 Connect the cable to the Outdoor e 32 Methods of connecting the eo eet f 33 Checking the Drainage Insulating the pipe and special piping applications 35 Checking th drainage anses ecean 35 Insulating the pipe and special piping 36 Air Purging and EV CU AUN asane eld ae earner ed cee at 37 Le tM MU LM LA LE 37 a ML M MK M LUE 38 LAT 85 ner A LO LL x C LA Ux AH 39 BIS DI PT CH E 40 me C c 41 Function Of io TTC enc 41 odii em
80. tool as shown below x Slanted Uneven Rough 390 Point down Firmly hold copper pipe in the proper size hole dimension of Flare nut the bar as shown in the table below Outside diameter A mm inch mm 26 35 1 4 0 0 5 29 52 3 8 0 0 5 23 Service Manual Flaring Work and Connection of Piping Check 1 Compare the flare work like the figure on the right Smooth all around 2 If a flared section is defective cut it off and repeat the flar n Hes ing process again Improper flaring Inclined Surface Cracked Uneven damaged thickness Even length all around Connecting ti Indoor 1 Prepare the indoor unit s piping and drain hose for installation through the wall 2 Remove the plastic tubing retainer see illustration on the right and pull the tubing and drain hose away from chassis For right rear piping Route the indoor tubing and the drain hose in the direction of rear right 2 Insert the connecting cable into the indoor unit from the out door unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connection later 3 Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located on the lowest side of the bundle Locating on the Upper side
81. ulti Zone Split System Air Conditioner 50 5 gt gt ON N S S dh Sy A Disassembly Unhook the tab on the right inside of the chassis at the same time slightly pull the evaporator toward you until the tab is clear of the slot 1 5 To remove the Motor Cover Remove 2 securing screws 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 side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bearing 51 Service Manual Disassembly
82. unning Current A 0 15 0 15 0 15 0 15 Fan Type Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan No Used Diameter EA inch mm 1 3 74 95 1 3 74 95 1 3 74 95 1 3 74 95 Noise Level Sound Press 1m H M L dBA 31 29 22 31 29 22 36 32 29 36 32 29 Temperature controller Thermistor Thermistor Thermistor Thermistor Coil Tube Size OD inch mm 0 197 5 0 0 197 5 0 0 197 5 0 0 197 5 0 Fins per inch 20 20 18 18 No of Rows amp Column 2R 15C 2R 15C 2R 15C 2R 15C Dehumidification Rate pints day 12 4 13 5 Dimensions W H D inch mm 33 0 10 6 6 0 840 270 153 33 0 10 6 6 0 840 270 153 35 2 11 1 6 5 895 282 165 35 2 11 1 6 5 895 282 165 Net Weight Ibs kg 15 4 7 15 4 7 20 9 9 5 20 9 9 5 Piping Connection Liquid inch mm 1 4 6 35 1 4 6 35 1 4 6 35 1 4 6 35 Gas inch mm 3 8 9 52 3 8 9 52 3 8 9 52 3 8 9 52 Drain hose ID 0 inch mm 0 79 20 0 79 20 0 79 20 0 79 20 Packing Dimension W H D inch mm 35 713 18 9 906 332 223 35 7 13 1 8 8 906 332 223 38 3 9 1 14 6 973 231 372 38 3 9 1 14 6 973 231 372 Stuffing Quantity With Without S Parts 20 40ft hi c 440 910 1091 440 910 1091 353 719 792 353 719 792 Note 1 Due to our policy of innovation some specifications may be changed without notification 15 Service Manual Product Specifications
83. use you are charging with liquid refrigerant from the gas side absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner Stopping part way will allow the gas to be discharged If the system has been charged with liquid refrig erant while operating the air conditioner turn off the air conditioner before disconnecting the hose 5 Replace the valve stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque as indicated below Be sure to check for gas leakage 79 Service Manual Outside diameter Turque mm inch kg m 06 35 1 4 1 8 156 2 09 52 3 8 4 2 364 5 012 7 1 2 5 5 477 4 Exploded View Exploded View NS Indoor Unit Model B MMCO9FA 1 B MMHO9FA 1 B MMC12FA 1 B MMH12FA 1 Exploded View Model A MMC18FA 1 A MMH18FA 1 2 N rtt 81 Service Manual E
84. xploded View Model A MMC24FA 1 A MMH24FA 1 Heat pump type Heat pump type Wall Mounted Multi Zone Split System Air Conditioner Exploded View Model A MMC36FA 1 A MMH36FA 1 a a a Heat pump type 83 Service Manual Specifications and performance data subject to change without notice HEAT CONTROLLER INC 1900 WELLWORTH AVENUE JACKSON MICHIGAN 49203 THE QUALITY LEADER IN CONDITIONING AIR 3828 20390 08 06 2008
85. y Error High Low 5 times 1 times OFF Wall Mounted Multi Zone Split System Air Conditioner 64 Troubleshooting Guide Trouble analysis 1 Check temperature difference between intake and discharge air as well as the operating current All of the refrigerant many have asked et Restriction in the refrigeration cycle Temp Difference H Temp difference approx 8 C 14 4 F Refrigerant leakage Current less than 80 of Clog of refrigeration cycle rated current Defective compressor Operating Current Temp difference less than 8 C 14 4 F Current near the rated cur Excessive amount of refrigerant rent __ Temp difference over 8 C 14 4 F Normal Notice Temperature difference between intake and discharge air depends on room air humidity When the room air humidity is relatively higher temperature difference is smaller When the room air humidity is relatively lower temperature difference is larger 2 Check temperature and pressure of refrigeration cycle Suction pressure Temperature Compared with Compared with Cause of Trouble Description the normal value the normal value High Defective compressor Current is low Higher Normal Excessive amount of High pressure does not quickly refrigerant rise at the beginning of operation Insufficient amount of Current is low

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