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MOOVAIR DUA09HICU230X5 Service Manual

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SERVICE MANUAL
MOOVAIR MODEL
DUA09HICU230X5
DUA12HICU230X5
DUA18HICU230X5
DUA24HICU230X5
DUA36HICU230X5
DUA48HICU230X5
DMA09HOS25230E8
DMA12HOS25230E8
DMA18HOS25230E8
DMA24HOS25230E8
DMA09HOS28230E8
DMA12HOS28230E8
DMA18HOS28230E8
DMA24HOS28230E8
DMA36HOS28230E8
DMA48HOS28230E8
DMA36HOS18230S5
DMA48HOS18230S5
SRM_M_UNIHIC_0_ALLX_240325
FACTORY CODE
CCA3U-09HRFN1-M(C)
CCA3U-12HRFN1-M(C)
CCA3U-18HRFN1-M(C)
MCD1-24HRFN1-MT0W(GA)
MCD1-36HRFN1-M(GA)
MCD1-48HRFN1-M(GA)
MOX230-09HFN1-MW5W
MOX230-12HFN1-MV5W
MOX430-18HFN1-MU0W
MOD32-24HFN1-MT0W
MOX330-09HFN1-MY5W
MOX330-12HFN1-MW5W
MOX430-17HFN1-MT0W
MOD30-24HFN1-MU0W
MOE30U-36HFN1-M(GA)
MOE30U-48HFN1-M-[X](GA)
MOD30U-36HFN1-MP0(GA)
MOE30U-48HFN1-MP0(GA)
moovair.ca
PRODUCT CODE
22022511000703
22022511000710
22022511000711
22022511003396
22022511003496
22022511003497
22022016016320
22022016016322
22022016018180
22022016016500
22022016016162
22022016016220
22022016015900
22022016015920
22022516001923
22022516001922
22023116000121
22023116000122

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Summary of Contents for MOOVAIR DUA09HICU230X5

  • Page 1 SERVICE MANUAL MOOVAIR MODEL FACTORY CODE PRODUCT CODE DUA09HICU230X5 CCA3U-09HRFN1-M(C) 22022511000703 DUA12HICU230X5 CCA3U-12HRFN1-M(C) 22022511000710 DUA18HICU230X5 CCA3U-18HRFN1-M(C) 22022511000711 DUA24HICU230X5 MCD1-24HRFN1-MT0W(GA) 22022511003396 DUA36HICU230X5 MCD1-36HRFN1-M(GA) 22022511003496 DUA48HICU230X5 MCD1-48HRFN1-M(GA) 22022511003497 DMA09HOS25230E8 MOX230-09HFN1-MW5W 22022016016320 DMA12HOS25230E8 MOX230-12HFN1-MV5W 22022016016322 DMA18HOS25230E8 MOX430-18HFN1-MU0W 22022016018180 DMA24HOS25230E8 MOD32-24HFN1-MT0W 22022016016500 DMA09HOS28230E8 MOX330-09HFN1-MY5W...
  • Page 2 Light commercial MONO 3D Air Conditioner Mono DC SERVICE MANUAL Revision D: 2403, Content updated. Table of Contents Model Numbers: Precaution Indoor Unit: Part Names And Functions MCA3U-09HRFN1-M(C); MCA3U-12HRFN1-M(C); MCA3U-18HRFN1-M(C); Dimension MCD1-24HRFN1-MT0W(GA), MCD1-36HRFN1-M(GA), MCD1-48HRFN1-M(GA) Service space Outdoor Unit: Refrigerant Cycle Diagram MOX230-09HFN1-MW5W;...
  • Page 3 CONTENTS 1. Precaution ..............................1 1.1 Safety Precaution .......................... 1 1.2 Warning ............................1 2. Part Names and Features..........................4 2.1 Model Names of Indoor/Outdoor units ..................4 2.2 Part names of Indoor/Outdoor units ....................5 2.3 Features ............................7 3.
  • Page 4  Be caution when unpacking and installing the product. 1. Precaution Sharp edges could cause injury, be especially careful of the case edges and the fins on the 1.1 Safety Precaution condenser and evaporator.  For installation, always contact the ...
  • Page 5   If strange sounds or smoke comes Install the drain hose to ensure that from product, turn the breaker off or water is drained away properly. disconnect the power supply cable. A bad connection may cause water leakage.  There is risk of electric shock or fire.
  • Page 6  Do not insert hands or other objects through air inlet or outlet while the product is operated.  Do not drink the water drained from the product.  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.
  • Page 7 2. Part Names and Features 2.1 Model Names of Indoor/Outdoor units Outdoor units Series Capacity Indoor units MOX230-09HFN1-MW5W; MCA3U-09HRFN1-M(C) MOX330-09HFN1-MY5W Compact MOX230-12HFN1-MV5W; MCA3U-12HRFN1-M(C) MOX330-12HFN1-MW5W Cassette MOX430-17HFN1-MT0W MCA3U-18HRFN1-M(C) MOX430-18HFN1-MU0W MOD30-24HFN1-MU0W MCD1-24HRFN1-MT0W(GA) MOD33-24HFN1-MT0W MOD30U-36HFN1-MP0(GA) New Cassette MCD1-36HRFN1-M(GA) MOE30U-36HFN1-M(GA) MOE30U-48HFN1-MP0(GA) MCD1-48HRFN1-M(GA) MOE30U-48HFN1-M-[X](GA)
  • Page 8 2.2 Part names of Indoor/Outdoor units Compact Cassette Units...
  • Page 9 New Cassette Units...
  • Page 10 2.3 Features 2.3.1 Cassette Units 2.3.1.1 Fresh Air  Fresh air intake function bring you fresh and comfortable air feeling. 2.3.1.2 Wired Controller (Optional)  Compared with infrared remote controller, wired controller can be fixed on the wall and avoid mislaying.
  • Page 11 3. Dimension 3.1 Indoor Unit Cassette Units (9K, 12K, 18K) Liquid side Gas side Body Drain hole Wiring connection port ( for Service ) E-parts box 4-Screw hole (for install panel) 4-install hanger Drain pipe Fresh air intake Wiring connection port Panel...
  • Page 12 New Cassette Units (24K, 36K, 48K) Capacity (Btu/h) Unit inch 8.07 inch 9.65 inch 11.30...
  • Page 13 3.2 Outdoor Unit Note: The above drawing is only for reference. The appearance of your units may be different. Model unit MOD30-24HFN1-MU0W 1030 MOD33-24HFN1-MT0W inch 37.2 16.1 31.9 40.6 26.5 15.9 MOD30U-36HFN1-MP0(GA)
  • Page 14 Model Unit MOE30U-36HFN1-M(GA) 1333 1045 MOE30U-48HFN1-MP0(GA) MOE30U-48HFN1-M-[X](GA) inch 37.5 14.3 52.5 41.1 25.0 15.9...
  • Page 15 MOX230-09HFN1-MW5W, MOX230-12HFN1-MV5W 30.87(784) W3 11.9(303) D 30.12(765) W 32.9(835) W1 17.8(452) A 0.71(18) 61.6 A2 10 A1...
  • Page 16 MOX330-09HFN1-MY5W, MOX330-12HFN1-MW5W...
  • Page 17 MOX430-17HFN1-MT0W, , MOX430-18HFN1-MU0W 35.24(895) 13.46(342) D 26.1(663) 35(890) 37.6(955) 2.4(61) 2.91(74) 0.47(12)
  • Page 18 4. Service Space 4.1 Indoor Unit Compact Cassette Units Unit: mm...
  • Page 19 New Cassette Units Ceiling Ventilator Indoor unit Indoor unit Illumination Ceiling 150cm / 59.1? 150cm / 59.1? 200cm / 78.7? (200cm / 78.7? recommended 400cm / 157.5? >230cm / 90.6? Ground Ceiling Front panel Ceiling board B (Ceiling hole) Capacity (kBtu/h) A(mm/inch) H(mm/inch) B(mm/inch)
  • Page 20 4.2 Outdoor Unit (Wall or obstacle) More than 30cm(11.81in) Air inlet More than 60cm More than 30cm (23.62in) (11.81in) Maintain channel More than 60cm Air inlet (23.62in) Air outlet More than 200cm(78.74in)
  • Page 21 5. Refrigerant Cycle Diagram MOX330-09HFN1-MY5W, MOX330-12HFN1-MW5W INDOOR OUTDOOR Electronic CAPILIARY TUBE expansion valve LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE (EVAPORATOR) HEAT T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE T5 Discharge...
  • Page 22 MOX230-09HFN1-MW5W, MOX230-12HFN1-MV5W INDOOR OUTDOOR Electronic CAPILIARY TUBE expansion valve LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE (EVAPORATOR) HEAT T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE Accumulator 3-WAY VALVE T5 Discharge temp.
  • Page 23 MOX430-17HFN1-MT0W, MOX430-18HFN1-MU0W, MOD30-24HFN1-MU0W, MOD33-24HFN1-MT0W INDOOR OUTDOOR Cold plate LIQUID SIDE Strainer Electronic Throttle orifice 2-WAY VALVE expansion valve T3 Condenser temp. sensor HEAT HEAT T4 Ambient T1 Room temp. EXCHANGE EXCHANGE temp. sensor sensor (EVAPORATOR) (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE...
  • Page 24 MOD30U-36HFN1-MP0(GA), MOE30U-48HFN1-MP0(GA), INDOOR OUTDOOR Cold plate LIQUID SIDE Throttle orifice Strainer 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE High pressure switch 3-WAY VALVE Accumulator TP Discharge temp.
  • Page 25 MOE30U-36HFN1-M(GA), MOE30U-48HFN1-M-[X](GA) INDOOR OUTDOOR Plate heat LIQUID SIDE exchanger Throttle orifice Check Valve 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE High pressure switch 3-WAY VALVE Accumulator...
  • Page 26 6. Wiring Diagram 6.1 Indoor Unit MCA3U-09HRFN1-M(C), MCA3U-12HRFN1-M(C), MCA3U-18HRFN1-M(C)
  • Page 27 MCD1-24HRFN1-MT0W(GA) MCD1-36HRFN1-M(GA), MCD1-48HRFN1-M(GA)
  • Page 28 6.1.1 Some connectors introduce: A For remote control (ON-OFF) terminal port CN23 and short connector of JR6 1. Remove the short connector of JR6 when you use ON-OFF function; 2. When remote switch off (OPEN), the unit would be off; 3.
  • Page 29 C. For new fresh motor terminal port CN8 1. Connect the fan motor to the port, no need care L/N of the motor; 2. The output voltage is the power supply; 3. The fresh motor cannot excess 200W or 1A, follow the smaller one; 4.
  • Page 30 6.1.2 Micro-Switch Introduce: Compact Cassette Units(9K,12K,18K) A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti-cold wind action in heating mode. Range: 24 C, 15 C, 8 C, according to EEROM setting (reserved for special customizing). TEL0+16 Setting fan speed TEL0+12...
  • Page 31 Range: Active, inactive D. Micro-switch SW5 is for setting mode priority of multi connection. Range: Heat, cool. E.Micro-switch SW6 is for selection of temperature compensation in heating mode. This helps to reduce the real temperature difference between ceiling and floor so that the unit could run properly. If the height of installation is lower, smaller value could be chosen.
  • Page 32 New Cassette Units(24K,36K,48K) A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti-cold wind action in heating mode. Range: 24 C, 15 C, 8 C, according to EEROM setting (reserved for special customizing). B.
  • Page 33 C. Micro-switch SW2-2 is for selection of Breezeless function. Range: OFF, ON. D. Micro-switch SW3 is for selection of auto-restart function. Range: Active, inactive E.Micro-switch SW6 is for selection of temperature compensation in heating mode. This helps to reduce the real temperature difference between ceiling and floor so that the unit could run properly. If the height of installation is lower, smaller value could be chosen.
  • Page 34 G. Micro-switch SW8 is for setting the master or slave unit when the unit is in twin connection. Range: Master no slave (Normal 1 drive 1 connection), Master (2 positions without difference), Slave H.Micro-switch S1 and dial-switch S2 are for address setting when you want to control this unit by a central controller.
  • Page 35 6.2 Outdoor Unit MOX230-09HFN1-MW5W, MOX230-12HFN1-MV5W, MOX330-09HFN1-MY5W, MOX330-12HFN1-MW5W 16022000035853...
  • Page 36 MOX430-17HFN1-MT0W, MOX430-18HFN1-MU0W, MOD33-24HFN1-MT0W...
  • Page 37 MOD30-24HFN1-MU0W BLACK BLUE CO M P_ TO P OPTIOna l R ED R ED CN32 CN2 9 CN26 CN30 CN4 2 CN16 BLACK BLUE BLUE CN20 R ED OPTIONAL HE AT1 CN 8 BLACK CN21 W HIT E OPTIONAL HEAT2 CN36 BLACK CN12...
  • Page 38 MOE30U-36HFN1-M(GA), MOE30U-48HFN1-M-[X](GA)
  • Page 39 MOD30U-36HFN1-MP0(GA)
  • Page 40 MOE30U-48HFN1-MP0(GA)
  • Page 41 PCB board of MOX230-09HFN1-MW5W, MOX230-12HFN1-MV5W, MOX330-09HFN1-MY5W MOX330-12HFN1-MW5W, MOD33-24HFN1-MT0W [1.7] 2018-10-26 L601 CN10 CN3_1 Earth DAS1 CN3_2 N-IN L-IN CN11 FUSE1 T20A/250VAC D601 CN16 R195 PTC1 R606 R128 R129 R131 R130 R604 R603 R605 D610 D406 E331 C601 R623 D602 R180 D401 DZ301 CN15...
  • Page 42 PCB board of MOX430-17HFN1-MT0W Name Meaning Earth: connect to Ground Power Supply N_in: connect to N-line (208-230V AC input) (CN3) L_in: connect to L-line (208-230V AC input) S: connect to indoor unit communication 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON. HEAT1 CN16 connect to compressor heater, 208-230V AC when is ON...
  • Page 43 PCB board of MOX430-18HFN1-MU0W Name Meaning Earth: connect to Ground Power Supply N_in: connect to N-line (208-230V AC input) L_in: connect to L-line (208-230V AC input) S: connect to indoor unit communication 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON. AC-FAN connect to AC fan HEAT2...
  • Page 44 PCB board of MOD30U-36HFN1-MP0(GA) MOD30-24HFN1-MU0W, Name Meaning CN11 N_in: connect to N-line (208-230V AC input) Power Supply CN12 L_in: connect to L-line (208-230V AC input) EEV-A CN16 EEV-B CN13 EEV-C EEV-D CN15 connect to electric expansion valve EEV-E EEV-F CN17 EEV-G CN14 connect to pipe temp.
  • Page 45 CN31 S: connect to indoor unit communication(pin1-pin2: 24VDC Pulse wave; S-C(mono) CN34 pin2-pin3: 208-230V AC input) HEAT_D connect to chassis heater, 208-230V AC when is ON CN20 CN21 HEAT_Y connect to compressor heater, 208-230V AC when is ON CN36 4-WAY CN38 connect to 4 way valve, 208-230V AC when is ON.
  • Page 46 PCB board of MOE30U-36HFN1-M(GA), MOE30U-48HFN1-MP0(GA), MOE30U-48HFN1-M-[X](GA) Name Meaning L1_in: connect to L1-line (230V AC input) Power Supply L2_in: connect to L2-line (230V AC input) Exhaust temp. sensor T5 TESTPORT CN35 used for testing HEAT1 CN19/CN20 connect to chassis heater, 208-230V AC when is ON HEAT2 CN24/CN25 connect to compressor heater, 208-230V AC when is ON...
  • Page 47 (pin1-pin2&pin3-pin4:5VDC pulse wave) Compressor CN14 connect to compressor top temperature sensor CN11 connect to pipe temp. sensor T2B T4 T3 connect to pipe temp. sensor T3, ambient temp. sensor T4 CN15/CN23/CN26/ connect to Electric Expansion Valve(A~F) CN30/CN33/CN38 connect to IPM&PFC board CN9 CN22 Communication to indoor unit...
  • Page 48 IPM board of MOE30U-36HFN1-M(GA), MOE30U-48HFN1-MP0(GA),MOE30U-48HFN1-M-[X](GA) Name Meaning connect to main board L-Out Power Supply connect to main board N-Out Connect to main PCB CN6 FAN_DC FAN_1/FAN_2 connect to outdoor DC fan 1& DC fan 2 CN_COMP Connect to compressor...
  • Page 49 7. Air Velocity Distributions Cassette Units 9K/12K Cooling Discharge Angle 30°...
  • Page 50 Discharge Angle 60°...
  • Page 51 Heating Discharge Angle 30°...
  • Page 52 Discharge Angle 60°...
  • Page 53 Cooling Discharge Angle 30°...
  • Page 54 Discharge Angle 60°...
  • Page 55 Heating Discharge Angle 30°...
  • Page 56 Discharge Angle 60°...
  • Page 57 Cooling Discharge Angle 30°...
  • Page 58 Heating Discharge Angle 30°...
  • Page 59 Cooling Discharge Angle 30°...
  • Page 60 Heating Discharge Angle 30°...
  • Page 61 Cooling Discharge Angle 30°...
  • Page 62 Heating Discharge Angle 30°...
  • Page 63 8. Electric Characteristics Model Indoor Unit Voltage Min. Max. MCA3U-09HRFN1-M(C) 208-230V 187V 253V MCA3U-12HRFN1-M(C) 208-230V 187V 253V MCA3U-18HRFN1-M(C) 208-230V 187V 253V MCD1-24HRFN1-MT0W(GA) 208-230V 187V 253V MCD1-36HRFN1-M(GA) 208-230V 187V 253V MCD1-48HRFN1-M(GA) 208-230V 187V 253V...
  • Page 64 9. Sound Level 9.1 Indoor unit 1.4m Microphone Noise level dB(A) Model MCA3U-09HRFN1-M(C) MCA3U-12HRFN1-M(C) MCA3U-18HRFN1-M(C) MCD1-24HRFN1-MT0W(GA) MCD1-36HRFN1-M(GA) 52.5 46.5 MCD1-48HRFN1-M(GA)
  • Page 65 9.2 Outdoor unit Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise Level dB(A) MOX230-09HFN1-MW5W MOX230-12HFN1-MV5W MOX330-09HFN1-MY5W MOX330-12HFN1-MW5W MOX430-17HFN1-MT0W MOX430-18HFN1-MU0W 60.5 MOD30-24HFN1-MU0W 62.5 MOD33-24HFN1-MT0W MOD30U-36HFN1-MP0(GA) MOE30U-36HFN1-M(GA) MOE30U-48HFN1-MP0(GA) MOE30U-48HFN1-M-[X](GA) 66.5...
  • Page 66 10. Accessories Cassette Units Name Shape Quantity Installation Fittings Installation paper board Tubing & Fittings Soundproof / insulation sheath Out-let pipe sheath Out-let pipe clasp Drainpipe Fittings Drain joint Seal ring Remote controller & Its Frame Remote controller & Its Frame(The product you Remote controller holder have might not be...
  • Page 67 11. The Specification of Power Type 9K-18K Phase 1-phase 1-phase Power Frequency and Voltage 208-230V, 60Hz 208-230V, 60Hz Circuit Breaker/ Fuse (A) 25/20 25/20 Indoor Unit Power Wiring 3-core cable 3-core cable Outdoor Unit Power Wiring (14AWG) (14AWG) 4-core cable 4-core cable (16AWG) (16AWG)
  • Page 68 12. Field Wiring 9K~24K 36K, 48K...
  • Page 69 13. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode 0℃～30℃ 10℃～32℃ Room temperature 17℃～32℃(62℉～90℉) (32℉～86℉) (50℉～90℉) 0℃～50℃ (32℉～122℉) Outdoor temperature -15℃～24℃ （-15℃～50℃(5℉～122℉)：For (Entry level) (5℉～75.2℉) the models with low temperature 0℃～50℃ cooling system） (32℉～122℉) Outdoor temperature -25℃～24℃ -25℃～50℃(-13℉～122℉) (E-Star level) (-13℉～75.2℉) Outdoor temperature...
  • Page 70 When the compressor discharge temp. is 14. Electronic Function getting higher, the running frequency will be limited as below rules: ---Compressor discharge temp. T5>115 ℃ 14.1 Abbreviation (239° F) for 5s, compressor stops and restarts T1: Indoor room temperature up till T5<90℃(194° F) T2: Coil temperature of indoor heat exchanger ---110<T5<115℃(239°...
  • Page 71 A weak current flow through the coil of 14.4 Operation Modes and Functions compressor from the wiring terminal of the 14.4.1 Fan mode compressor, then the compressor is heated (1) Outdoor fan and compressor stop. without operation. (2) Temperature control is disabled and no Preheating release condition: temperature setting is displayed.
  • Page 72 Setting fan T1-Td+1.5 ℃(34.7° F) T1-Tsc Actual fan speed speed Turbo -1.5(-2.7°F) H-（H-=H-G) 4.0 ° C (7.2 ° F ) -3.0(-4.8°F) H（=H） 100% -4.5(-8.1°F) H+(H+=H+G) 3.5 ° C (6.3 ° F ) -1.5(-2.7°F) M-(M-=M-Z) High -3.0(-4.8°F) 1.5 ° C (2.7 ° F ) M(M=M) -4.5(-8.1°F) Medium...
  • Page 73 4) If the compressor cumulate running time is up No longer than 15 min DEFORSTFRE_ADD to 120 minutes and T3 < -15℃(5° F), T4＞-22℃ compressor (-7.6° F). 4-way valve 5) If the compressor cumulate running time is up Outdoor fan minutes T4-T3 >...
  • Page 74 (3.6° F) 14.4.6.3 Timer off. The machine will turn off ΔT<-2℃(-3.6° F) automatically when reaching the setting time. Heating 14.4.6.4 Timer on/off. The machine will turn on Indoor fan will run at auto fan of the relevant automatically when reaching the setting “on” mode.
  • Page 75 Main action under different condition :( every 5 seconds the system will check the water level 14.4.9 Follow me If the indoor PCB receives the signal which one time) results from pressing the FOLLOW ME 1. When the A/C operates with cooling button on remote controller or wired (including auto cooling), dehumidifying, and remote controller, the buzzer will emit a...
  • Page 76 to save energy (but only if the set temperature 14.4.16 Active Clean function(standard for is less than 24° C/75° F). new cassette units) If the set temperature is more than 24° C/75° F The Active Clean Technology washes away and 30° C/86° F, press the ECO button, the fan dust, mold, and grease that may cause odors speed will change to Auto, the set temperature when it adheres to the heat exchanger by...
  • Page 77 running time Causes of compressor stop. Causes of compressor stop. Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve When the AC enter into the information enquiry status, it will display the code value in the next 25s , the details are as follows.
  • Page 78 multiply 2. Compressor 0-FF 0-255 minutes If the actual value exceeds the continuous range, it will display the maximum running time value or minimum value. Causes of 0-99 For the detailed Decimal display compressor meaning, please stop. consult with engineer Reserve 0-FF...
  • Page 79 For new cassette units, • To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “ON/OFF + Air Speed” for 7s: • After entering the engineer mode, the remote control will display icons of “Auto, Cool, Dry, Heat”, and the Battery icon;...
  • Page 80 Error code of engineer mode Display Error Information EH 00/ Indoor unit EEPROM parameter error EH 0A EL 01 Indoor / outdoor unit communication error EH bA Communication error between indoor unit and indoor external fan module EH 30 Parameters error of indoor external fan EH 35 Phase failure of indoor external fan EH 36...
  • Page 81 PC 46 Compressor speed malfunction PC 49 Compressor over current protection PC 06 Compressor discharge temperature protection PC 08 Outdoor current protection PH 09 Anti-cold air in heating mode pc 0f PFC module malfunction pc 30 System overpressure protection pc 31 System pressure is too low protection PC 03 Pressure protection...
  • Page 82 15. Troubleshooting Safety Electricity is stored in capacitors, even when the power supply is shut off. Do not forget to discharge the electricity in the capacitors. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, For other models, connect a discharge resistor (approx.100Ω 40W) or a soldering iron plug between the + and - terminals of the electrolytic capacitor on the opposite side of the outdoor printed circuit board (PCB).
  • Page 83 15.1 Indoor Unit Error Display For compact cassette units, Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error Communication malfunction between indoor and ☆ 2 times outdoor units ☆ 4 times Indoor fan speed malfunction ☆...
  • Page 84 For new cassette units, Operation Timer Display Error Information Lamp Lamp EH 00/EH 1 time Indoor unit EEPROM parameter error 2 times EL 01 Indoor / outdoor unit communication error The indoor fan speed is operating outside of the normal 4 times EH 03 range(for some models)
  • Page 85 15.2 Error Display on Two Way Communication Wired Controller Display LED STATUS Communication error between wired controller and indoor unit Communication error between wired controller and indoor unit(for KJR-120X series EH b3 wired controller) The cassette panel is abnormal Communication malfunction between indoor and outdoor units Indoor room temperature sensor (T1 ) is in open circuit or has short circuited Evaporator coil temperature sensor (T2) is in open circuit or has short circuited Evaporator coil outlet temperature sensor T2B is in open circuit or has short...
  • Page 86 15.3 Outdoor unit error display For MOE30U-36HFN1-M(GA), MOE30U-48HFN1-MP0(GA), MOE30U-48HFN1-M-[X](GA): Display LED STATUS EC 51 Outdoor EEPROM malfunction EL 01 Indoor / outdoor units communication error PC 40 Communication malfunction between IPM board and outdoor main board PC 08 Outdoor overcurrent protection PC 10 Outdoor unit low AC voltage protection PC 11...
  • Page 87 Outdoor check function • A check switch is included on the outdoor PCB. • Push SW1 to check the unit’s status while running. The digital display shows the following codes each time the SW1 is pushed. Display Remark Display running frequency, running state or malfunction Normal display code Actual data*HP*10...
  • Page 88 Frequency limit caused by Bit7 IGBT radiator Frequency limit caused by Bit6 The display value is number. Frequency limit caused by Bit5 example, the digital high temperature of T2. display tube show Frequency limit caused by Bit4 Frequency limit symbol then Bit5=1, low temperature of T2.
  • Page 89 will show “0”.If the temp. is higher than 70 degree, the digital display tube will show “70”. If the indoor unit is not Evaporator pipe temp. T2B of 2# indoor unit connected, the digital display tube will show: “――” Actual data/4. EVI valve open angle(only for If the value is higher than 99, the digital display tube will MOE30U-36HFN1-M(GA)
  • Page 90 15.4 Diagnosis and Solution 15.4.1 EEPROM parameter error diagnosis and solution Error Code E0/ EH 00/EH 0A/F4/ EC 51 Malfunction conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Potential causes Installation mistake ● Faulty PCB ●...
  • Page 91 15.4.2 Communication malfunction between indoor and outdoor units diagnosis and solution (E1) For 9K-24K: Error Code E1/ EL 01 Malfunction conditions If the indoor unit does not receive feedback from outdoor unit for 110 seconds 4 consecutive times. Potential causes Wiring mistake ●...
  • Page 92 Power off, then restart the unit after 2 minutes. Does the error code Solved disappear? Check the wiring connection Correct the connection or between indoor and outdoor change wires unit, are they good? The value is alternative from negative to positive Measure the DC voltage between Check the wiring connection The value is fixed and...
  • Page 93 Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is normal running, the voltage will move alternately between -50V to 50V.
  • Page 94 For 36K-60K: Malfunction conditions Indoor unit does not receive feedback from outdoor unit for 60 seconds OR outdoor unit does not receive feedback from indoor unit for 120 seconds. ● Wiring mistakes Possible causes ● Faulty indoor or outdoor PCB Power off, then restart the unit 2 minutes later Check whether there s any...
  • Page 95 15.4.3 Fan speed malfunction diagnosis and solution Error Code E3/EH 03 Malfunction conditions When indoor fan speed is too low (300RPM) for a certain period of time, the unit ceases operation and the LED displays a failure code. Potential Causes Wiring mistake ●...
  • Page 96 Index 1: 1. Indoor or outdoor DC fan motor (Control Chip is in Fan Motor) Turn power on and while the unit is on standby, measure the voltage between pin1 and pin3 as well as between pin4 and pin3 in fan motor connector. If the value of the voltage is not within the range shown in the following table, the PCB may be experiencing problems and need to be replaced.
  • Page 97 Port Description Parameter Remark CON1 Power input for the PCB 230V/AC Communication with main PCB Test port 5V/DC For debugging board UVW output for DC fan motor CN23 CON2 Ports for reactor CN1 Communication with main PCB Signal Voltage +15V 0~6V 0~15V...
  • Page 98 15.4.4 Fan speed malfunction diagnosis and solution Error Code F5/EC 07/EC 71 Malfunction conditions When outdoor fan speed is too low or too high for a certain period of time, the unit ceases operation and the LED displays a failure code. Potential Causes Wiring mistake ●...
  • Page 99 Index 1: 1. DC Fan Motor (control chip is in PCB) Release the UVW connector. Measure the resistance of U-V, U-W, and V-W. If the resistances are not equal to each other, the fan motor may be experiencing problems and need to be replaced. Otherwise, the PCB must has problems and need to be replaced.
  • Page 100 showing in below tables, the outdoor main PCB must has problems and need to be replaced. Port Description Parameter Remark CON1 Power input for the PCB 192-380V/DC Communication with main PCB Test port 5V/DC For debugging board FAN1 UVW output for DC fan motor FAN2 UVW output for DC fan motor CN1 Communication with main PCB...
  • Page 101 15.4.5 Open or short circuit of temperature sensor diagnosis and solution Error Code E4/E5/F1/F2/F3/EH 60/EH 61EC 53/EC 52/EC 54 Malfunction conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays a failure. Potential causes Wiring mistake ●...
  • Page 102 15.4.6 Refrigerant Leakage Detection diagnosis and solution Error Code EC/EL 0C Define the evaporator coil temperature T2 of the compressor starts Malfunction conditions running as Tcool. If the following occurs 3 times, the display shows "EC" and the unit switches off: In the first 8 minutes after the compressor starts up, if T2 ＜Tcool－...
  • Page 103 For new cassette: Power off, then restart the unit 15 minutes later. Put your hands in front of the indoor air outlet. Is there cool or heat air blowing out from Is T2 loose? Ensure proper connections. indoor air outlet? Is T1 too close to Install correctly the evaporator...
  • Page 104 Water-level alarm malfunction 15.4.7 diagnosis and solution Error Code EE/EH 0E Malfunction conditions If the sampling voltage is not 5V, the LED will display the failure code. ● Wiring mistakes Possible causes ● Faulty water-level switch ● Faulty water pump ●...
  • Page 105 15.4.8 IPM malfunction or IGBT over-strong current protection diagnosis and solution Error Code P0/PC 00 Malfunction conditions When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED shows failure code and the AC turn off. Possible causes Wiring mistake ●...
  • Page 108 15.4.9 Over-voltage or under-voltage protection diagnosis and solution Error Code P1/ PC 01/ PC 10/ PC 11/ PC 12 Malfunction conditions Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Potential causes Power supply issues ●...
  • Page 109 Remark: Measure the DC voltage between P and N port. The normal value should be around 310V.340V or 380V...
  • Page 110 15.4.10 High temperature protection of compressor top diagnosis and solution Error Code P2/PC 02 Malfunction decision If the sampling voltage is not 5V, the LED will display the failure. conditions Power supply problems. ● Supposed causes System leakage or block ●...
  • Page 111 High temperature protection of IPM board diagnosis and solution (P2) High temperature protection of IPM board Check whether the radiator Fix the radiator well is fixed well ? Check whether electronic Install the electronic control box control box is Installed correctly good? Check whether thermal...
  • Page 112 15.4.11 Inverter compressor drive error diagnosis and solution Error Code P4/ PC 04 Abnormalities in the inverter compressor drive is detected by a Malfunction conditions special detection circuit, which can perform communication signal detection, voltage detection, and compressor rotation speed signal detection.
  • Page 113 15.4.12 Outdoor IPM module temperature sensor malfunction diagnosis and solution Error Code P7/ EC 55 Malfunction conditions If the sampling voltage is 0V or 5V, the LED displays a failure. Potential causes Faulty IPM module ● Trouble shooting: Power off, then restart the unit after 2 minutes. Does a problem remain? The unit is operating normally Check whether the...
  • Page 114 15.4.14. Malfunction PC 0A Error Code PC 0A Malfunction conditions When the outdoor pipe temperature is more than 65° C, the unit stops. It starts again only when the outdoor pipe temperature is less than 52° C. ● Faulty condenser temperature sensor Possible causes ●...
  • Page 115 15.4.15. PC 06 Malfunction Error Code PC 06 Malfunction conditions When the compressor discharge temperature (T5) is more than 115℃ for 10 seconds, the compressor will stop and not restart until T5 is less than 90℃. ● Refrigerant leakage Possible causes ●...
  • Page 116 15.4.16. PC 0F Malfunction Error Code PC 0F Malfunction decision When the voltage signal that IPM send to compressor drive chip is conditions abnormal, the display LED will show failure code and AC will turn off. ● Wiring mistake Supposed causes ●...
  • Page 117 15.4.17. Malfunction PC 40 Communication error between outdoor main chip and compressor driven chip Is there at least one LED in the compressor driven chip light? Check the signal wire between the Compressor driven chip and the main board, is it connected properly? Reconnect and retry.
  • Page 118 15.4.18. P6/ PC 30 Malfunction Error Code P6/ PC 30 Malfunction conditions Outdoor pressure switch cut off the system because high pressure is higher than 4.4 MPa. ● Possible causes Wiring mistakes ● Faulty pressure protector ● Faulty outdoor fan ●...
  • Page 120 15.4.19. P6/ PC 31 Malfunction Error Code P6/PC 31 Malfunction conditions Outdoor pressure switch cut off the system because low pressure is lower than 0.13 MPa. ● Possible causes Wiring mistake ● Faulty pressure protector ● System blockages ● Faulty outdoor PCB...
  • Page 121 Low pressure protection Are the low pressure Reconnect the low pressure protector and main control protector and main control board board wired properly? Is the low pressure protector broken? Method: Disconnect the plug. Measure the resistance of the low Replace low pressure protector pressure protector.
  • Page 122 15.4.20 Current overload protection Error code F0/ PC 08/ PC 44/PC 46/PC 49 Malfunction decision If the outdoor current exceeds the current limit value, the LED displays a failure code. conditions ● Wiring mistakes ● Faulty bridge rectifier Possible causes ●...
  • Page 123 Was the protection activated in standby? Is the power voltage is Restart the unit when the power normal? supply returns to normal Is outdoor terminal voltage Is the power wiring Reconnect the normal？ wired correctly? power wiring Is the voltage between L and Are L and N wired Reconnect L and N properly?
  • Page 124 15.4.21 Lack phase failure of outdoor DC fan motor(EC 72) Power off,then restart the unit The unit operates 2 minutes later.Is it still normally displaying the error code Check the wiring of fan motor.Are all the connections Correct the connections good? Check whether the three- phase resistance of the fan is...
  • Page 125 15.4.22 Outdoor compressor lack phase protection(PC 43) Power off,then restart the unit The unit operates 2 minutes later.Is it still normally displaying the error code Check both ends of compressor connecting Correct the connections line .Are all the connections good? Check whether the three- phase resistance of the Replace the compressor...
  • Page 126 15.4.24 Communication malfunction between external fan module and indoor unit(EH b A) External fan DC bus voltage is too low protection(EH 3A) External fan DC bus voltage is too high fault(EH 3A) Trouble shooting: Shut off the power supply and turn it on 2 minutes later.
  • Page 127 15.5 Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 128 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (℃--K) ℃ ℉ ℃ ℉ ℃ ℉ ℃ ℉ K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865...
  • Page 129 Appendix 2 Temperature Sensor Resistance Value Table for T5,TH (℃--K) ℃ ℉ ℃ ℉ ℃ ℉ ℃ ℉ K Ohm K Ohm K Ohm K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5 57.37...
  • Page 130 Appendix 3: 10 11 12 13 14 15 16 17 18 19 20 21 22 ℃ 48 50 52 54 56 58 60 62 64 66 68 70 72 ℉ 23 24 25 26 27 28 29 30 31 32 33 34 35 ℃...
  • Page 131 2. Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value KSK103D33UEZ3 KTN110D42UFZ KSN140D58UFZ Blue - Red 2.13 Ω 0.82 Ω 1.86Ω Blue - Black Red - Blue ATF310D43UMT EAPQ420D1UMUA KTM240D43UKT KTF310D43UMT KTQ420D1UMU Blue - Red Blue - Black 1.03Ω...
  • Page 132 3. IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red...
  • Page 133 4: Pressure on Service Port Cooling chart: COOLING MODE Outdoor temp. ℉ Indoor Temp. （23.89） （29.44） （35） （40.56） （46.11） (℃) 10.1 10.7 11.2 0.82 0.78 0.81 0.86 1.01 0.86 0.83 0.87 0.91 1.07 0.93 0.89 0.91 0.96 1.12 Pressure (bar) Outdoor temp.
  • Page 134 Heating Chart: HEATING MODE Outdoor temp. ℉ Indoor Temp. (℃) 57 (13.89) 47 (8.33) 37 (2.78) (-2.78) (-8.33) 30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9 3.03 2.85 2.53 2.28 2.08 3.25 3.00 2.66 2.54 2.33...
  • Page 135 16. Disassembly Instructions Note: This part is for reference, the photos may have slight difference with your machine. 16.1 Indoor unit  Compact Cassette Unit...
  • Page 146  New Cassette Unit...
  • Page 157 16.2 Outdoor unit  MOX230-09HFN1-MW5W, MOX230-12HFN1-MV5W, MOX330-09HFN1-MY5W, MOX330-12HFN1-MW5W Part name Procedures Remarks Panel plate How to remove the panel plate. 1)Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the big handle first(3 screws) Remove the top cover (4 screws) 4)Remove the screws of front panel(9 screws)
  • Page 158 5) Remove the screws of the right side panel(5 screws) Fan ass’y How to remove the fan ass’y. 1)After remove the panel plate following procedure 1 2) Remove the nut fixing the fan, and remove the fan. 3) Remove the four fixing screws of the fan motor, then remove the motor.
  • Page 159 Electrical How to remove the parts electrical parts. After finish work of item 1 and item 2, disconnect the connector for compressor and release the ground wire(1 screw). Pull out the wires from electrical supporting plate and turn over the electronic control assembly.
  • Page 160 Remove the fixing board (2 hooks) Disconnect the connectors from the electronic control board. Then remove the electronic control board (4 hooks)
  • Page 161 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of item 1,2,3. ○ ○ 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 162  MOD30-24HFN1-MU0W, MOD30U-36HFN1-MP0(GA) Part name Procedures Remarks Panel plate How to remove the panel 4 screws of big handle plate. Screws of top panel(3screws,1screws is under the big handle) 1) Stop operation of the air conditioner and turn “OFF” the power breaker. Screws of big handle (3 screws)
  • Page 163 Fan ass’y How to remove the fan ass’y. Electronic control box 1) After remove the panel plate following procedure 1 2) Remove the nut fixing the fan,and remove the fan. compressor ② 3) Unfix the hooks and then open the electronic control box cover (4 hooks).
  • Page 164 5) Disconnect the connector of fan motor from the electronic control ○ board. 6) Remove the four fixing screws of the fan motor, then remove the motor. ⑥ Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove...
  • Page 165 the connector for the compressor Pull out the connectors from the electronic control board. 4-way valve T3T4T5 U V W Connect to 5) Pull out the connector, pressure key board remove one screw and switch then remove the key board subassembly on terminal board.
  • Page 166 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 167  MOX430-17HFN1-MT0W, , MOX430-18HFN1-MU0W Part name Procedures Remarks Panel plate How to remove the panel plate. 1) Stop operation of the air conditioner and turn “OFF” the power breaker. Remove the big handle first(3 screws) Remove the top cover, (3 screws) One of the screws is located underneath the big handle.
  • Page 168 5) Remove the screws of the right side panel(6 screws)
  • Page 169 Fan ass’y How to remove the fan ass’y. Electronic control box 1) After remove the panel plate following procedure 1 2) Remove the nut fixing the fan,and remove the fan. compressor ○ 3) Remove 5 screws on the electronic control board and then turn over the electronic control board.
  • Page 170 4) Disconnect the ④ connector of fan motor from the electronic control board. 5) Remove the four fixing ⑤ screws of the fan motor, then remove the motor. Electrical How to remove the parts electrical parts. 1) After finish work of item 1 and item 2, remove the connector for the compressor...
  • Page 171 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 172  MOD33-24HFN1-MT0W Part name Procedures Remarks Panel plate How to remove the panel 4 screws of big handle plate. Screws of top panel(3screws,1screws is under the big handle) 1) Stop operation of the air conditioner and turn “OFF” the power breaker. Screws of big handle (3 screws)
  • Page 173 Fan ass’y How to remove the fan ass’y. Electronic control box 1) After remove the panel plate following procedure 1 2) Remove the nut fixing the fan,and remove the fan. compressor ② 3) Remove 5 screws on the electronic control board and then turn over the electronic control board.
  • Page 174 4) Disconnect the ④ connector of fan motor from the electronic control board. 5) Remove the four fixing ⑤ screws of the fan motor, then remove the motor. Electrical How to remove the parts electrical parts. 1) After finish work of item 1 and item 2, remove the connector for the compressor...
  • Page 175 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 176  MOE30U-36HFN1-M(GA), MOE30U-48HFN1-MP0(GA), MOE30U-48HFN1-M-[X](GA) Part name Procedures Remarks Fan ass’y How to remove the fan ass’y. 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the screws of air outlet grille(8 screws) 3) Remove the hex nut fixing the fan.
  • Page 177 screw) 7) Disconnect the fan motor connectors FAN1(3p,white) and ⑥ FAN2(3p,white) from IPM board. 8) Remove the fan motor after ⑧ unfastening fixing screws. Panel plate How to remove the panel plate. 1) Remove big handle.(2 screws) and water Screws of big handle collector(2 screws)
  • Page 178 Electrical How to remove the electrical parts parts. 1) Perform work of item 1 step 5~6 and item 2. IPM board PCB board 2) Disconnect following 6 pieces of connection wires and connectors between IPM and other parts. CN3(red) CN2(black) U(blue),V(red),W(black) CN9(10p,white) CN8,CN5(3p)
  • Page 179 4) Disconnect the connectors and wires connected from PCB and other parts. Connectors: CN8: Discharge temperature sensor (2p,black) CN9:T3/T4 temperature sensor (2p/2p,blue) CN15/CN23: Electronic expansion valve (6p,red) CN10: High and low pressure switch (2p/2p, white) CN22:S1 and S2(1p/1p,red) Wires: CN17/CN18: 4-way valve (blue-blue) CN19/CN20: connected to crankcase ④...
  • Page 180 heater and compressor from the terminal. 5) Remove the discharge pipe and suction pipe with a burner. 6) Remove the hex nuts and ⑥ washers fixing the compressor to bottom plate. 7) Lift the compressor. The 4-way How to remove the 4-way valve valve 1) Perform work of item 1 step 5~6 and item 2.

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