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Commercial Air Conditioning SERVICE MANUAL

1. HCFU 42HK03 3 Low pressure abnormal indicator flash 16 times 1 check if the outdoor pressure no connect well switch is connected well yes no check if the PCB wiring is correct wiring correctly yes check if the system is leakage Y S after being welded well or lack of refrigerant reevacuate and recharge no no check if the pressure switch change the pressure switch is normal yes If there is other failure please check if the dip switch is correct 4 Communication failure between outdoor and indoor unit Confirm commumication failure according to the fault code list Confirm the fault indicator is communication failure yes Are communication wire Does indoor communication no S and supply wires L and DO re wiring indicator flash N properly connected Grounded well yes yes Is communication wire too no i check the other close to power cable which i communication wire yes reasons causes interference is broken re wiring yes no S should not share check if indoor outdoor PCB fuse no change a multicore cable and transformer are normal defective parts with L and N yes replace indoor PCB no if failure is eliminated 36 replace outdoor PC
2. 4 0 15807020 O 11099055 r ee 205 Z O 88 5149 Oo AS JTf60GABYIL DAKN SUNISO 4GSDID K DAPHNE SES6P 101700 E 5 inner protection __ 2 84080 0082 inner groovedip9 52 cooling 43 60 heating 6 7 ulm 2 5 o e o a ie Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 Norminal condition indoor temperature cooling 27 C DB 19 C WB indoor temperature heating 20 CDB Outdoor temperature cooling 35 C DB 24 C WB outdoor temperature heating 7 C DB 6 C WB The noise level will be measured in the third octave band limited values using a Real Time Analyser calibrated sound intensity meter It is a sound pressure noise level The detailed method please refer to the following information mounting on ceiling unit outdoor unit 1 air outlet from side the noise level is the average sound pressure level measured from front left right directions 2 air outlet from top the noise level is the average sound pressure level measured from front back left right directions measured point H height to the ground h unit height 1m 2 and it is 1m to each side Note is the real time analyser position H a Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 3 Safety precautio
3. Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 WARNING e Installed electrical leaking circuit No goods or nobody is permitted to breaker placed on or stand on outdoor unit It easily cause electrical shock without The falling of goods and people may circuit breaker cause accidents Air conditioner can t be installed in the environment with inflammable gases because the inflammable gases near to air conditioner may cause fire hazard e Please let the dealer be responsible for Don t operate the air conditioner with installing the conditioner damp hands Incorrect installation may cause water leak electrical shock and fire hazard e Call the dealer to take measures to prevent the refrigerant from leaking If conditioner is installed in a small Otherwise will be shocked room be sure to take every measure in order to prevent suffocation accident even in case of refrigerant leakage e Only use correctly typed fuse May not use wire or any other materials e When conditioner is deinstalled or replacing fuse otherwise may cause reinstalleddealer should be responsible faults or fire accidents for them Incorrect installation may cause water leaking electrical shock and fire hazard e Connect earthing wire Earthing wire should not be con nected to the gas pipe water pipe lightning rod or phone line in correct Use discharge pipe correctly to ensure earthing may cause shock
4. single split multi split Indoor unit address VIX 7 O other 2P convertible single VIX blade 15 Network address selection v shows jumper connected ON X shows jumper disconnected OFF SW1 SW2 address 1 2 3 4 1 2 3 4 1 x x x x x x x 2 J x x x x x x 42 3 x x i 2 2 control AND 4 J x x x x x 2 4 x X x 4 showes 2 x X x x passive port 001 we 44 0 e control the 126 later 127 x y K af entering 128 J J J J J J J priority 25 Commercial Air Conditioner Model HCFU 42CH03 a HCFU 42HK03 10 Electrical data 10 1 Outdoor unit wiring diagram and PCB photo CIRCUIT DIAGRAM OF OUTDOOR UNIT 0150500676 TRANSFORMER HIGH PRESSURE SWITCH M H c2 lh a MU Lae ONE Of LOWPRESSURESMICH _ ___ E Hes FAN MOTOR OUTDOOR ANBIENT SENSOR s I cnt2 CNS BILL 4WAY VALVE OUTDOOR PIPING SENSOR SOLENOID COMPRESSOR VENT SENSOR M MAGNETIC CONTACTOR
5. efficient discharge Incorrect pipe use may cause water leaking Earthing Ha lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 4 Net dimension 4 1 Indoor unit 1580 1 700 598 1495 285 _ pm S 5511 114 gt is 240 27 i i 570 EE 1 640 90 N p 0 25 1 440 300 2427 0847 0 200 SVN Ty 350 47 fe DRM 1 BOR t If 95 1 A 1 40 1 1 60 ix gt 47 1 250 2200 224 M 155 PAT AT A 1 1 r 90 mm 4 2 Outdoor unit HCFU 42CH03 1006 i Power wiring terminal 2300 825 o _ _ 160 T 1 in a e 2100 2150 447 gt 600 646 1 a 180 Commercial Air Conditioner Model HCFU 42CH03 a le HCFU 42HK03 HCFU 42HK03 948 Power wiring Terminal 1250 Screw Hole 4xM 10 25 5 Installation Instructions Please reference corresponding Operation amp Installation Manua Oil trap setting requirement Oil trap is required no mater the outdoor unit is upper or lower than indoor
6. Model Name Code Sub part code characteristic Indoor ambient temp R25 23KO 2 5 001A3900005 001A3900003 sensor B25 50 4200K 3 Indoor coil temp R25 10KOQO 3 001A3900006 001A3900004 sensor B25 50 3700K 3 HCFU 42CH03 Outdoor compressor R80 50K 2 3 0010450398 001A3800096 HCFU 42HK03 vent sensor B25 80 4450K 396 Outdoor defrost 25 5 3 0010451314 00143800091 sensor B25 50 3700K 3 Outdoor ambient 25 5 3 00143900110 00143800090 B25 50 4200K 396 33 Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 Haief 11 Troubleshooting 11 1 System failure If the refrigerant in the system cannot flow fluently or the airflow circles more slowly please check due to the following procedures Cooling bad cooling if set temp is proper change the set temp _ icheck the evaluation of cooling load if the cooling load too large refrigerant flow i 4 way valve failure malfunction U change 4 way valve lack of refrigerant recharge refrigerant solenoid valve failure change the solenoid valve compressor failure change compressor bad ventilation if fan is set as low speed set the fan as med speed if air inlet filter is blocked clean the filter I D
7. c E o SUNISO 4GSDID K DAPHNE SE56P 1500 1700 je fe o vja ajo 2 SCROLL JT160GABY1L DAKIN Compressor Type Protection type Type x Number Speed an motor output power ir H M L Heat exchanger Dimension Refrigerant control method mm mm Capillary tube Defrosting 1 7 Direct Start dB A 62 0 0 D 2 3 2 r min 740 50 W 0 156 m h 6000 m Outdoor unit Dien lt 951 55 5 3 gt inner grooved q9 52 cooling 43 60 heating 6 7 Temp scope 1008x830x410 1130x930x490 LxWxH LxWxH vim ERES 2 5 3 3 3 3 x x 3 3 3 3 x x 3 3 313 kg Pe je m Connecting Method m m H a le f Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 item Model Function 9g healing Capacity Brun 400 4800 Capacity x T 129 140 Sensibleheatrato O O O T oo S o Total power input x Tw 400 480 Maxpoweripu wW 5 82 ww 28 30 Dehumidifying capacity omm O 47 OoOO Power cable x sedo Sigalcable T section z Connecting cabe section Sex remm Powersource 3PH 380400V 50HZ Running Max Running current cooling 8 8 9 6 heating amp 6 92 gt Sta
8. 13 cN u J _ COMPRESSOR R B4 W L2 FUSE R oL R Hean W Ww T N_T315A250VAC BL loot BL YIG 1 t9 or 4 _ IBI i CRANKCASE 1 je L HEATER R S T NOTES 1 DASHED PARTS ARE NOT AVAILABLE IN SOME TYPES 2 DASHED PART 1 IS COMPRESSOR VENT PROTECTOR IN SOME TYPES R RED W WHITE p BLBLUE POWER SUPPLY SUPPLY TOINDOOR INDOOR UNIT 3 THE MARK R S T IS EQUAL TO U V W T1 T2 T3 Y G YELLOW GREEN CIRCUIT DIAGRAM OF INDOOR UNIT 0010576547 W WHITE B BLACK R RED Y YELLOW REMOTE REMOTE RECEIVER CONTROLLI OR ORANGE BL BLUE I CENTRALI BR BROWN Y G YELLOW GREEN Hl Li CAP FAN MOTOR CAPACITOR H HHH CN TRANS TRANSFORMER H a CN13 rin ALARM CERRO ON RECEIVE UP DOWN E BOAI ms LR FLOAT CO CONTROLLER i WIRED aos CEN SW FON CONTROLLER CN7_ SM Tul m 12111234 i 21 3 15A 250VAC P9 P10 P11 P12 P14 15_ i i ji ON ON 1234 12 ROOMIPIPE FREEZE SW2 i l CN6
9. CN6 Cy SW ll I I i 55 SWN PIPING TEMP w SWING 4 C2 ook SENSOR MOTOR SENSOR FAN MOTOR PERE NOTE 1 PARTS 1 3 IN DASHED FRAME ARE NOT AVAILABLE WI BIRW G 2 PARTS 4 5 ARE OPTIONAL AND THE LINE MARKED 4 ONLY AVAILABLE IN CONVERTIBLE TYPE 3 PARTS RS CONNECTED WIRES IN DASHED FRAME 7 8 NOT AVAILABLE IN CONVERTIBLE TYPE AND ALSO NOT AVAILABLE IN AD AMBEA ECO THERE IS A CLIP ON PCB EEE 4 PARTS AND CONNECTED WIRES IN DASHED FRAME 8 ARE NOT AVAILABLE IN DUCT TO OUTDOOR UNI 5 PARTS AND CONNECTED WIRES IN DASHED FRAME 0 DETERMINED BY PRODUCTS TYPE can AVAILABLE IN AC AFBEA TYPE 6 PARTS AND CONNECTED WIRES IN DASHED FRAME 7 REFER TO OPERATION MANUAL TO SET SW1 SW5 26 H a le Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 10 2 HCFU 42HK03 outdoor PCB 0010452441 photo to CILRISRIB R22 Hh lt gt 27 H a f Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 10 3 HCFU 42CH03 outdoor PCB 0010451429 photo CN3 CN10 PGHD HD idi 9 GYKu CN12 5 022 CN8 3 532008 70 30104851428 2008 11 25 CN9 28 HCFU 42CH03 HCFU 42HK03 Commercial Air Conditioner Model aie 10 4 Indoor PCB 0010451167E photo
10. FEATURES 1 1 Products code explanation H CFU 42 C 03 Applicable voltage 03 stands for 200 220V 50Hz Design number Product type H stands for heat pump type C stands for cool only type E stands for electric heating type ooling Heating capacity 18 18000BTU h Product type B stands for cassette type CF stands for convertible type D stands for duct P stands for cabinet type Q stands for chiller system E stands for ceiling concealed type U stands for outdoor unit Haier 1 2 Brief Introduction for 1 T2 working condition Climate type Type of Air T1 T2 T Conditioner Cooling Only 18 C 43 C 10 C 35 C 21 C 52 C Heat pump 7 C 43 C C 35 C C 52 C Electricity Heating 43 C 935 C 52 C 1 3 Operating Range of Air Conditioners Temp Mode Rated Maximum Minimum Indoor DB C 27 32 18 Cooling WB C 19 23 14 Outdoor DB C 35 43 10 WB C 24 26 6 Indoor DB C 20 27 15 Heating WB C 14 5 Outdoor DB C 7 24 7 WB C 6 18 a ie Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 1 4 Product features Flexible and easy installation The outdoor can meet the higher request of installation From the specifications you will find for each unit how long and how high the piping will be which will be convenient for design and installation Optional safety devices and much more precis
11. O D is insulated if the refrigerant pipe between insulate the thick pipe and slim pipe separately Figure 1 34 Haier Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 11 2 Failure code Please refers to control function part page 24 and 25 11 3 Diagnose and troubleshooting 1 Sensor failure check if the wiring is correct according to no wiring diagram 1 if sensor is fixed well no yes 1 Is sensor short circuit or open circuit yes yes Is sensor resistance acceptable yes no Is DC voltage between both ends of sensor near 5V or OV no Replace PCB reconnect Relocate Replace sensor Replace sensor 2 Communication failure between operation panel and indoor unit start if the wired controller no and indoor PCB are compatible yes if terminals A B C D on wired controller are no corresponding with terminals of indoor PCB yes if terminals A B C D of no wired controller are in open circuit or connected well yes if terminals A B or yes C D of wired controller are short circuit change wired controller wire correctly wire correctly wire correctly 35 Haier Commercial Air Conditioner Model HCFU 42CH03
12. P15 communication with fixed frequency single outdoor unit COMM 0 220VAC 16 control signal live line L 220VAC P17 input control signal neutral line N OVAC CN1 input port of transformer 220VAC CN2 input port 1 of transformer no use 3 port 2 of transformer no use CN4 input port 3 of transformer 1 2 14VAC 3 4 12VAC CN5 input control connecting port to wired controller CONTROLLER three bits 1 power supply 12VAC 2 power supply OVAC 3 communication COMM CN6 input control ambient temp coil temp sensor connecting port ROOM PIPE 1 2 ROOM 3 4 PIPE Indoor ambient temp sensor R25 23K 2 5 B25 50 4200K 3 range 40 80 Indoor coil temp sensor R25 10K 2 3 B25 50 3700K 3 range 20 90 CN7 control external load fresh air control FRESH 1 blank 2 power supply OVDC control output 12VDC CN8 input signal FREEZE no use CN9 input control no use CN10 communication with fixed frequency single outdoor unit 0 12VDC 11 signal door switch DOOR 1 2 short circuit is normal cut off P8 output CN12 input signal external alarm input ALARM 1 3 short circuit is normal if cut off air conditioner stops work Note For convertible type cassette type duct type units CN11 and CN12 must be in short circuit or PCB will display failure information CN13 input
13. signal wiring port of remote receiver board RECEIVE BOARD 1 power supply 5VDC 2 power supply OVDC 3 remote signal 4 signal output of running lamp OVDC 5 signal output of timer lamp OVDC 6 signal output of power lamp OVDC 7 signal output of water pump running lamp OVDC gt CN14 control external load auto elevating function 1 signal of door switch close 2 output of elevating direction control OVDC 3 output of elevating power control OVDC 4 power supply 12VDC lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 CN15 input signal detecting water level of float switch 1 3 short circuit is normal cut off shows that level exceeds the limitation If float switch cuts off or occurs other failure LED1 will flash 10 times CN16 input control wiring port of central controller REMOTE 1 RS485 B 2 RS485 A CN17 output signal output signal of failure alarm control external load 12V ALM 1 control output OVDC 2 power supply 12VDC CN18 output signal no use CN19 control external load swing 1 1 16VDC 2 OVDC 3 OVDC 4 OVDC 5 CN20 control external load swing 2 1 16VDC 2 OVDC 3 4 OVDC 5 OVDC CN21 input signal spring switch CHECK 1 input signal of earthing 2 power supply OVDC gt CN22 short circuit means selecting single split communication type no use CN23 short circuit means selecting mu
14. temp arrives the defrost end temp 14 C or the defrost time is over 12 minutes the outdoor defrost will finish and send signal to indoor unit The min defrost time is 2 minutes 2 3 Defrost operation Compressor and outdoor motor stop indoor motor stops meanwhile 55 seconds later the reversing valve will close Another 5 seconds later compressor starts up After defrost is over compressor stops outdoor motor runs at high speed 55 seconds later the reversing valve will open Another 5 seconds later compressor starts up and indoor motor runs at anti code mode Type 1 Standard defrost 15 Commercial Air Conditioner Model HCFU 42CH03 a HCFU 42HK03 1 If Tr 2 C when Tpx 6 C enter defrost 2 If 12 C lt Tr lt 2 C when Tp lt 6 C enter drfrost as following fig 3 No matter the ambient temperature when Tp lt 16 C enter defrost 12 C 2C Coil temp C Z 22 6 Ambient temp 16 C N Type 2 Non standard defrost rectify defrost data by the device 1 If Tr 6 C when Tp lt 6 enter defrost 2 If 18 C Tr 6 C when 6 enter drfrost as following fig 3 No matter the ambient temperature when Tpx 18 C enter defrost Coil temp C 18 C 6 C l I Ambient temp 1 6 22 18 C WHY 2 4 Manual defrost Indoor sends defrost signal to outdoor and the outdoor will receive the defrost signal when compressor is running in heating mode then enter the
15. unit only when the piping length is more than 10m Setting method install one oil trap for every 10 meters at the gas pipe Trap dimensions Gas pipe diameter Min R mm L mm 15 88 40 80 i 19 05 40 80 25 4 40 80 31 8 60 90 38 1 60 100 Note the drop between the oil trops should be 10m P 11 Commercial Air Conditioner Model HCFU 42CH03 a e HCFU 42HK03 6 Parts and Functions 6 1 Indoor unit C L L L POWER OPER TIMER COMP Operating Control Panel 8 Compressor Lamp 2 Emergency switch 7 Remote receiver 8 Power Indicator Lamp Inlet Grill Filter inside 4 OPERATION Indicator Lamp 9 Front panel 5 TIMER Indicator Lamp 6 2 Outdoor unit HCFU 42CH03 air inlet N air outlet grille 9 air outlet grille compressor inside of unit stop valve HCFU 42HK03 air inlet Outlet air compressor inside of stop valve lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 7 Controller functions The convertible indoor unit can be controlled by wired controller YR E12 or remote controller YR H50 ir pnm LILI 81 10075 LON OF E e moda maba YR H50 13 Commercial Air Conditioner Model HCFU 42CH03 a HCFU 42HK03 8 Refrugerant circuit HC
16. B Model HCFU 42CH03 HCFU 42HK03 Commercial Air Conditioner Haier 5 High pressure failure Confirm the fault according to the fault code list yes Are connectors of pressure switch in good condition yes Is high side pressure switch activated If not DC voltage is OV yes Is the high side pressure detected by the gage higher than threshold value The threshold value is indicated on the switch yes if outdoor stop valves of gas pipe and liquid pipe are open totally Is piping twisted deformed no Does indoor fan work properly during cooling cycle Does outdoor fan work properly during heating cycle yes Is indoor filter or heat exchanger dirty m Check if system is overfed according to equalized pressure in halt Is reading of discharging pressure gage oscillatory yes yes There is air in system Evacuate and recharge yes Check and reconnect no Replace PCB no Replace high pressure switch Open the valves Repair pipe no Repairfan motor or fan capacitor Cleaning LEN Evacuate and recharge no Bad operation codition such as ultra low outdoor temperature 37 a le Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 6 Overcurrent protection I
17. ED e Fan speed conversion in AUTO FAN mode the conversion will delay for 3 minutes from HIGH to LOW and no delay from LOW to HIGH f When the fan speed is HIGH LOW MED on the condition that the protection does not act the unit will run at the set fan speed when the protection acts for the sake of the normal operation the fan speed will be forced to conversion in Dry mode fan motor will be changed as request 4 AUTO mode control 4 1 When entering AUTO for the first time the unit will select the running mode due to the below conditions then perform the selected mode Tr2Ts 3 C select COOL mode includes FAN mode Tr Ts 3C select HEAT or FAN mode 4 2 After entering the AUTO mode the mode can change over among COOL HEAT or FAN modes according to the indoor ambient temperature conversion temperature difference Ts 3 C is 3 C 4 3 If the unit is in COOL mode when it cooling Ey 3 5 DUISIJ duie arrives compressor stop temperature the Ts 3 C heating blowing compressor will stop after compressor stops for 15 minutes the unit will check the room heating blowing temperature if Tr lt Ts 3 C the unit will enter HEAT or FAN mode or the unit will still be in COOL mode 4 4 For the heat pump unit if the unit is in HEAT mode at present when it arrives compressor stop temperature the compressor will stop after the compressor stops for 15 minutes the unit will check the r
18. FU 42CH03 capillary cooling stop valve liquid side 7 condenser evaporator o c 1 9 valve 5 z high pressure G switch E uw o 5 o JE S 5 maintenance 9 o5 valve low Po 518 pressure 5 switch E 9 compressor air liquid segregator heater 3 valve air side HCFU 42HK03 capillary x stop valve cooling liquid side lt condenser evaporator 9 4 way valve c 9 z maintenance 9 valve 5 g high pressure switch E 8 10 _ 5 a o QE 5 maintenance 9 valve E 2 low 96 519 pressure 5 switch 2 2 compressor air liquid segregator heater 3 way valve air side a ie Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 9 Electrical Control Functions 9 1 Outdoor control function 1 Outdoor motor control When the system does not occur overcooling overheating and over current protections the outdoor motor will occur the below changes according to the outdoor ambient temperature and indoor coil temperature 1 1 General information Outdoor motor is 2 speed type high low and stop The fan speed will change unless every step has been run for 45 seconds 1 2 Cooling mode 1 2 1 Indoor coil temp 2 15 C outdoor motor runs at high speed 1 2 2 Indoor coil temp 5 C outdoor motor runs at low speed 1 2 3 5 C x Indoor coil temp 15 C outdoor motor
19. H CN12 CN13 p Hi dn Ul NEM 2926624 LED1 CN14 24911860100 6021 443 WAE wen CN17 CN20 CN19 LED5 LED4 e n N LO x z 2 gt O 29 H Commercial Conditioner Model HCFU 42CH03 a e HCFU 42HK03 Condition for the PCB data 1 Working ambient temperature 10 C 70 C relative humidity 3096 9596 2 Preserved ambient temperature 20 80 C relative humidity 3096 9596 3 Power 220 50 60Hz voltage range 160V 250V 4 Precise of temperature control 1 C 0010451167E PCB information port and definition P1 connect to external power supply live line L 220VAC P2 connect to external power supply neutral line N OVAC 4 5 6 control external load neutral line 1 2 P7 control external load electrical heat HEAT control output 220VAC P8 control external load health function OXYGEN control output 220VAC P9 control external load humidification HUMI control output 220VAC P10 control external load SWING control output 220VAC P11 control external load WATER PUMP control output 220VAC P12 control external load indoor fan motor low speed L control output 220VAC P13 control external load indoor fan motor mid speed M control output 220VAC P14 control external load indoor fan motor high speed H control output 220VAC
20. Haier Commercial Air Conditioning SERVICE MANUAL HCFU 42CH03 HCFU 42HK03 Features High energy efficiency Fixed frequency Long distribution pipe and high drop Flexible and easy installation Fresh air hole more natural more healthy Optional safety devices and much more precision control device Manual code SYJS 010 07REV 0 Edition 2007 03 05 lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 CONTENTS COME c TREE RR 2 1 Description of products amp features 3 2 SDS CHIC ANON EC MED 5 Safety precaution 8 Net dimension 10 5 Installation instructions 11 6 Parts and FUNCIONS u rH ce Ee PY 12 7 Controller functlionS u uu e n 13 8 Refrugerant circuit 14 9 Electrical control functions 15 10 Electrical data 26 11 Iroubleshootifig uuu uu Ande Y abd icta 30 Commercial Air Conditioner Model HCFU 42CH03 a HCFU 42HK03 1 DESCRIPTION OF PRODUCTS amp
21. and temp protection are parallel avliable 3 3 1 In heating mode After compressor running for 40 seconds if the current thermostat has measured that system working current is more than 21A and keep it for 5 seconds outdoor motor will convert into low speed if working current is less than 18A it will resume to high speed if working current is more than 25A and keep it for 5 seconds outdoor motor will stop if working current is less than 22A outdoor will resume to low speed fan speed conversion frequency must be more than 45 seconds after compressor running for 5 minutes if working current is more than 34A and keep it for 5 seconds compressor will stop and will resume 3 minutes later If within 30 minutes there are 3 times compressor over current protection compressor will not start up meanwhile LCD will display E5 Only shut off and powered on again the protection can be cancelled 3 3 2 Not in heating mode After compressor running for 5 minutes if working current is more than 34A and keep it for 5 seconds compressor will stop and will resume 3 minutes later If within 30 minutes there are 3 times compressor over current protection compressor will not start up meanwhile LCD will display E5 Only shut off and powered on again the protection can be cancelled 3 4 Power protection PCB set power protection dectect the order of L2 and L3 by the combination of hardware and software L1 and N as base phase L1 L2 and L3 as the co
22. aneously The discharge temp sensor will check after compressor run compressor will stop if temp higher than 120 C after 2 minutes and minutes later it will resume if temp lower than 95 C If within 30 minutes the discharge temp over 120 C occurs 3 times the compressor will stop and LCD will display E4 only shut off and powered on again the system can be resumed The compressor will stop and LCD will display E4 if check the signal short connect over 2 minutes After the compressor has started 3 minutes dectect the open circute The compressor will stop and LCD will display E4 if signal open 2 minutes continuously Dicharge temp failure is resumable when given corrective signal Outdoor ambient and coil temp sensor can be used during motor control and deforst control 3 8 Starting current control Outdoor unit load control after the outdoor motor running for 2 seconds main compressor start up the secondary compressor will run 2 seconds later 3 9 4 way valve control 4 Outdoor PCB test 1 There are three pins marked with TEST please make the two ones near to COOL in short circuit Outdoor begin to run in cooling mode that is compressor run and outdoor motor works at high 18 Commercial Air Conditioner Model HCFU 42CH03 a HCFU 42HK03 speed 2 There are three pins marked with TEST please make the two ones near to HEAT in short circuit Outdoor begin to run in heating mode that is compressor and 4 way valve run
23. art signal not available cancelled 6 The system in non heating operation 7 Tg gt 52 C If one of the above conditions can be met the electric heater will stop 22 Commercial Air Conditioner Model HCFU 42CH03 a e HCFU 42HK03 8 FAN mode control The compressor and the outdoor motor will stop running indoor motor can be set at high med low speed the fan blade can swing or stay at one position In this mode you can set the TIMER and SLEEP function 9 CLOCK setting and TIMER function The unit can set 24 hour TIMER ON OFF and the min unit is 1 minute after being set the timer lamp of indoor will be on and after the timer is over the timer lamp will be off TIMER ON RUN LED is off compressor LED is off and TIMER LED is on the unit is in stop state When timer is over the unit begins to run and the timer LED is off The unit operation begins from receiving the timer signal for the last time The SLEEP function only can be set before the TIMER ON begins TIMER OFF the unit running the timer LED on while the timer is over timer LED off the unit will stop the sleep can be set the sleep time will replace the original time of TIMER ON OFF TIMER ON OFF set at the same time when the timer on off is set the timer LED will be off the SLEEP function can be set the sleep time will replace the original time of TIMER ON OFF 10 SLEEP function energy saving function at night 101 Standard sleep function in cooling or dry mod
24. defrost process When outdoor coil temperature arrives the defrost end point and the defrost time is over 5 minutes outdoor will send the defrost end signal to finish the defrost 3 System protection function The red lamp of outdoor PCB will light if it normall after electrify the lamp will flash if failure occurs and indicate the failure code 3 1 Anti freezed protection When compressor has run for over 6 minutes if indoor coil temp Tg lt 1 C for over 1 minutes 16 Commercial Air Conditioner Model HCFU 42CH03 a HCFU 42HK03 compressor and outdoor motor will stop and enter Fan mode After compressor stops for 9 minutes and indoor coil temp rises up to 10 C the unit resumes to cooling mode compressor and outdoor motor will work again 3 2 Overheat protection In heating mode if compressor is running and the indoor motor has run for over 30 seconds if indoor coil temp Tg gt 56 C the outdoor motor will enter low speed if Tg lt 52 C and outdoor motor has stoped for 45 seconds outdoor motor will resume high speed if Tg gt 60 C outdoor motor will stop if Tg lt 56 C and outdoor motor has stoped for 45 seconds outdoor motor will resume work if indoor coil temp gt 68 C compressor will stop and indoor motor run in thermostat OFF if indoor coil temp fall to 48 C and the compressor has stopped for 9 minutes resume to heating mode compressor and outdoor motor work again 3 3 Over current protection current
25. direction for fast temperature adjusting 3e Central control function if connected with a central controller H a ie Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 2 SPECIFICATION item Model HCFU 42CH03 Power source Circuit breaker 3PH 380400V SOHZ A min po OG m h 2000 1800 1400 k m inner grooved p7 k DIIS S 2 5 2 o 2 c 5 3 2 2 la o 2 2 unction Capacity 0 420 Capacity Sensible heat ratio Total L Maxpoweriput 80 o EERorcoP 2 Dehumidfyngcapacty Om 47 Powercabe section Signal cable o section a E Runni i electri Unit model color Type x Number Fan H M L an motor output power ir H M L Type Diameter Heat exchanger Total Area Temp scope Dimension LxWxH LxWxH lt D gt 5 5 o o x 5 esc 5 5 o x Qo o o x ojo o ajg ajo aja ojo x mio 115 8 gt z Indoor unit mxmmxmm 1580 700 240 1710 790 315 U ITI gia 2 2 5 22 3 3 x 3 3 x 3 3 i W m 2 m C A m m o D 2 c E D Q 9
26. e after running at SLEEP mode for 1 hour the set temperature will Ts 2 rise 1 C another 1 hour later the set temperature will rise Ts 1 another 1 C the unit continues running for 6 hours then the Ts unit will stop 5 10 2 Standard sleep function in heating mode after running at SLEEP mode for 1 hour the set temperature Ts reduces 2 C another 1 hour later the set temperature will Ts 2 reduce 2 C and another hours later the set Ts 3 temperature rises 1 C the unit continues running for 3 Ts 4 hours then the unit will stop 10 3 Non standard SLEEP function the sleep function can realize 1 8 hours sleep mode when being combined with the TIMER function 1 When in Auto mode the unit will make SLEEP operation due to the setting 2 After setting SLEEP function the clock can not be adjusted 3 If sleep time is no more than 8 hours when the time arrives the unit wil shut off 4 If sleep function is set after setting TIMER OFF function the unit will execute as the SLEEP function 5 If SLEEP function is set the TIMER function can not be set 6 If sleep function is set after setting TIMER ON function the sleep function only can be set befroe the TIMER ON time arrives 7 After setting sleep function press CLOCK button to check the clock press TEMP button to display the set temperature and press again to change the set temperature 11 Water level inspection and water pump control 1 In COOL including c
27. east Note in heating mode the compressor stops indoor motor delays to stop adjust if the pipe blows remaining heat the compressor startup indoor motor delays to start up adjust if the pipe is anti cold air in other conditions the compressor and the indoor motor are allowable not to be in company In cooling mode the motor will run according to the control not together with the compressor 7 8 Defrosting function in heating mode In defrosting and when the compressor resumes to run for 3 minutes after defrosting is over the unit will not adjust the sensor failure 7 8 1 Manual defrost In heating mode the set temperature 30 C and in high speed in 5 seconds press SLEEP button 6 times continuously then the buzzer will sound 3 times you can enter the manual defrosting At this moment the unit will not adjust the enter condition of defrost and begin to defrost function directly whose procedure is as the same as the auto defrost the quit condition is that the defrosting time is up to 5 minutes 7 8 2 Auto defrost enter condition a the compressor has run for 45 minutes continuously or for 75 minutes in all and has run for over 10 minutes continuously b the compressor and outdoor fan running normally c the temp of indoor coil sensor lower than 45 C d the defrosting temp lower than 8 C use the defrosting start signal from outdoor in the condition of with outdoor communication 7 8 3 Auto defrost quit conditio
28. er special request When only use central control type please firstly install according to air conditioner requests and set the dipswitch there is no other special request When central control type 128X and remote control type are used simultaneously set the dip switch according to central control type there is no other special request When central control type 128 X and wired control type 16X used simultaneously max indoor units sets 128X 16 can be controller Address setting of central controller can be met firstly and then modulate the address setting of slave unit wired controlled LED in indoor PCB 1 LED1 is the state lamp for remote receiver as well as failure lamp If indoor unit is normal LED1 is on or if failure occurs LED1 flashes regularly and you can adjust failure type according to the flash times 2 LED2 is used for multi split units as communication lamp If communication between indoor and outdoor is normal LED2 will be on 3 LEDS3 is used for single split units as communication lamp If communication between indoor and outdoor is normal LED3 will be on 4 LED4 LED5 is the lamp that shows the data receiving or sending between wired controller and PCB If LED4 LED5 be on in turn communication between wired controller and PCB is normal 45 Haier Commercial Air Conditioner 10 5 Sensor characteristic Model HCFU 42CH03 HCFU 42HK03 temp sensor
29. ginal state 6 5 Temperature cutoff protection In cooling mode the unit will check indoor coil temperature every time the compressor has run for 1 minutes when indoor coil temperature Tg gt Tr 5 the unit will stop and minutes later restart up if the temperature cutoff occurs for 3 times continuously the unit will stop and alarm 7 HEAT mode control 7 1 4 way valve control in heating mode compressor startup 4 way valve being electrified 10 seconds ahead compressor running 4 way valve retains original state compressor shutoff 4 way valve being powered off 2 minutes and 50 seconds later except for defrosting 4 way valve being electrified 5 seconds ahead and being powered off 55 seconds later 7 2 In heating mode for everytime the compressor startup thermostat ON within 6 minutes the 4 way valve will not be limited by the temperature sensor but for the set temperature change shutoff signal and the protection the compressor can stop immediately without 6 minute limitation 7 3 TZ1 compressor running indoor motor runs at anti cold air mode AT lt 1 compressor stops indoor motor runs at blowing remaining heat mode 1 lt AT lt 1 compressor retains original state 7 4 Overheat protection for the unit with outdoor PCB the outdoor motor is controlled by outdoor unit but the compressor is still controlled by indoor unit and their temperature points will not be accordant completely In heating mode compressor has started u
30. indoor coil temperature rises to 10 C the unit will resume to COOL mode the compressor and the outdoor motor will run again 5 5 Outdoor fan control realized by outdoor when with outdoor conmmunication function if the temp of indoor coil sensor Tg 6 C control the outdoor fan by the temp of outdoor coil sensor if the temp of outdoor defrost sensor Tc 34 C the outdoor fan will be OFF and lasted 45s at least if the temp of outdoor defrost sensor Tc 44 C the outdoor fan will be ON if the temp of outdoor defrost sensor 34 C lt Tc lt 44 C the outdoor fan will remain in the original state 20 lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 5 6 Temperature cutoff protection In cooling mode the unit will check indoor coil temperature every time the compressor has run for 1 minutes when indoor coil temperature Tg gt Tr 5 the unit will stop and minutes later restart up if the temperature cutoff occurs for 3 times continuously the unit will stop and alarm 6 DRY mode control 6 1 When the uint enters DRY mode for the first time the compressor outdoor motor and indoor motor will perform according to the below conditions A T2 the compressor and the outdoor motor will run continuously indoor motor will run at the set speed this area is defined as Area A Ox ATx2 the compressor and the outdoor motor will always run for 10 minutes and then stop for 6 minutes indoor motor will be LOW speed this area
31. ion control device a Ambient temperature sensor coil temperature sensor and compressor temperature sensor make the temperature control and defrosting control more precise b High low pressure switch can feel the discharging pipe pressure and suction pipe pressure on time and precisely If the pressure is too low or too high it will stop the compressor to prevent it being damaged for the sake of pressure c 3 minutes delay protection for the compressor the device can protect the compressor from some damages and make the compressor have a long life Silent operation New design of long piping length and large drop Optional installation mode The indoor unit can be installed on the floor or to the ceiling it is determined by the host favor and the room d cor It is more convenient to service and installation Silent operation The convertible unit is equipped with a high efficient smooth multi blade centrifugal fan which generates a powerful but gentle airflow to any corner in the room Space saving design An innovative fan and the ultra thin heat exchanger result in the ultra thin convertible unit Fully adjustable mounting brackets make it possible to install the unit enven in the tightest places Large angle air supplying 100 wide angle louvers and 70 wide angle blades design to make a precise control of the airflow it equably distributes the comfortable air to every coner of the room Automatically control of airflow
32. ipe pressure when the pipe pressure is too high 30 seconds later compressor and outdoor fan motor will stop and then 3 minutes later the unit will be normal Within 30 minutes if the compressor stops and will send failure because of too high pressure for 3 times 12 4 Low pressure protection After compressor is running for 3 minutes the unit will check the pipe pressure when the pipe pressure is too low and low pressure switch is running for 30 senconds compressor and outdoor fan motor will stop and will send failure 13 Trouble code The remote receiver wired controller and indoor PCB indicator all can indicate the failure code 24 Wired Central conirel controll controll indoor Fault description Possible cause Remedy er er PCB flash display displa times 10 08 08H 21D Fault in drain Float switch is open 25m or due to the signal system longer resumable 1 01 01H 01D Indoor ambient sensor broken down or short due to the signal temp sensor failure circuit for more than 2m resumable continuously 2 02 02H 02D Indoor pipe temp sensor broken down or short due to the signal sensor failure circuit for more than 2m resumable continuously 3 74 4AH 11D Outdoor ambient sensor broken down or short due to the signal temp sensor failure circuit for more than 2m resumable continuously 4 73 49H 12D Ou
33. is defined as Area B A T O0 the compressor and the outdoor motor will stop indoor motor will run at Low speed this area is defined as Area C 6 2 After the unit is running in DRY mode the system will change over among Area A Area B and Area C the conversion temperature difference 1 C AT 3 If the system is in Area A when AT lt 1 change to Area 1 If the system is in Area C when gt 1 change to Area 1 If the system is in Area B when AT gt 3 change to Area A When T lt 1 change to Area C 6 3 Anti freezed protection invalid in compulsory operation trial running heating mode When the unit has run for over 6 minutes after compressor starts up if indoor coil temperature Tg lt 1 C the compressor and the outdoor motor will stop and the unit will change to FAN mode 9 minutes later after compressor stops and when indoor coil temperature rises to 10 C the unit will resume to COOL mode the compressor and the outdoor motor will run again 6 4 Outdoor fan control realized by outdoor when with outdoor conmmunication function if the temp of indoor coil sensor Tg 6 C control the outdoor fan by the temp of outdoor coil sensor if the temp of outdoor defrost sensor Tc 34 C the outdoor fan will be OFF and lasted 45s at least if the temp of outdoor defrost sensor Tc 44 C the outdoor fan will be ON if the temp of outdoor defrost sensor 34 C lt Tc x44 C the outdoor fan will remain in the ori
34. lti split communication type no use 0010451167E PCB information function selection ON is 1 OFF is 0 The standard condition for PCB in factory SW1 4 bits are OFF SW2 4 bits are OFF SW3 4 bits are ON SWA 2 bits are ON SW5 4 bits are ON SW1 SW2 used for indoor unit to set unit address from 1 to 16 SW3 SW5 used for indoor unit to select different functions every dip switches are corresponding to J1 J10 SW2 4 ogistic relationship of control function door card control and remote wired control 0 means logistic relationship is 1 means the later coming is preferential 41 SW3 1 function selection control type 1 means remote control 0 means wired control J2 SW3 2 function selection temperature compensation in heating mode 1means yes Omeans no J3 SW3 3 function selection outdoor communication 1means yes Omeans no This PCB must be 1 44 SW3 4 function selection heat pump unit 1means heat pump Omeans cooling only 1 60 test in short circuit but in operation short circuit mustn t be permitted CHECK short spring switch control it also can be used as switch of convertible type except for testing J5 SW4 1 function selection elevating function 1means yes 0 means no 46 SW4 2 function selection health function 1means common indoor fan motor running 0 means special indoor outdoor running J7 SW5 1 function selection
35. n 1 15 Indoor ambient temperature indoor and outdoor coil temperature inspection 1 16 start current control the outdoor fan start after compressor running 2s in normal situation 2 LED function The LED for remote control type includes POWER TIMER COMPRESSOR WATER PUMP the POWER LED also indicate failure when the unit is switched on by the controller the POWER LED will be ON when being switched off the POWER LED will be OFF If the controller is in TIMER SLEEP mode the TIMER LED will be on if it is TIMER and SLEEP mode the TIMER LED will be off When the compressor is running the compressor LED will be on when it stops this LED will be off POWER LED flashes when there are system failure the flash times ti indicate the failure code 3 Indoor AUTO FAN control a Ifthe unit enters AUTO FAN for the first time when T 2 select high speed when T lt 0 select low speed or it will select med speed when thermostat is OFF fan will be low speed the conversion temperature difference is 1 degree b If the present fan speed is AUTO HIGH when A T x2 fan speed will change to AUTO MED AT c If the present fan speed is AUTO MED when T O0 fan speed will change to AUTO LOW when T gt 3 fan speed will change to AT AUTO HIGH 19 Ha lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 d If the present fan speed is AUTO LOW when A T gt 1 fan speed will chenge to AUTO M
36. n Carefully read the following information in order to operate the airconditioner correctly Below are listed three kinds of Safety Cautions and Suggestions WARNING Incorrect operations may result in severe consequences of death or serious injuries CAUTION Incorrect operations may result in injuries or machine damages in some cases may cause serious consequences INSTRUCTIONS These information can ensure the correct operation of the machine Be sure to conform with the following important Safety Cautions The Safety Cautions should be at hand so that they can be checked at any time when needed If the conditioner is transferred to the new user this manual should be as well transferred to the new user WARNING If any abnormal phenomena is found e Don t dismantle the outlet of the e g smell of firing please cut off the outdoor unit power supply immediately and contact The exposure of fan is very dangerous the dealer to find out the handling whichmay harm human beings method In such case to continue using the conditioner will damage the conditioner and may cause electrical shock or fire e When need maintenance and repairment call dealer to handle it After a long time use of air conditioner Incorrect maintenance and repairment the base should be checked for any may cause water leak electrical shock damages and fire hazard If the damaged base is not repaired the unit may fall down and cause accidents
37. n The defrosting temp over 14 C or the defrosting time is over 12 minutes use the defrosting end signal from outdoor in the condition of with outdoor communication 7 8 4 Defrost process a enter defrosting mode the compressor outdoor and indoor fan motor stops b 55 seconds later 4 way valve will be reverse after more 5 sensonds compressor begins to run c defrosting is over compressor stops outdoor fan running at high speed d 55 seconds later 4 way valve runs and compressor starts up The indoor fan motor will run at anti cold air condition 7 8 5 For the unit with auxiliary electric heating function a If the auxiliary electric heating function is working when the defrosting condition is met please stop electric heater firstly 20 seconds later defrosting can begin b After defrosting the unit will adjust the working state of electric heater according to the setting before defrosting 7 9 Auxiliary electric heating function valid in heating mode or heating state in AUTO mode Enter condition 1 T gt 1 2 Thermostat ON and running for 1 minute 3 Tr lt 26 C 4 Indoor motor running 5 Electric heating function start signal available cancelled 6 The system working in heating mode or in heating state of AUTO mode 7 Tg 48 C If the above conditions can all be met the electric heating function will work Quit condition 1 Tx 1 2 Thermostat OFF 3 Tr gt 26 C 4 Indoor motor stops 5 Electric heating function st
38. nction activated checked reset Haier Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 17 80 50H 15D Compressor Detected temperature of Resrorable overheat discharge line is higher when lower than 120 C than 100 C 18 12 0CH 23D Fault in operation Indoor units operate in Resrorable in mode different modes same operation mode 19 75 4BH 18D Outdoor coil sensor broken down or short due to the signal B suction circuit for more than 2m resumable sensor multi continuously 20 77 4DH 15D Outdoor sensor broken down or short due to the signal discharge B oil circuit for more than 2m resumable continuously temp sensor multi 21 20 32D 07D Module failure Module overheat overcurrent due to the signal short circuit resumable 22 36 54D 08D Fault in zero load Current sensor failure or due to the signal compressor is not started resumable 14 Jumper selection shows jumper connected ON Xshows jumper disconnected OFF shows no limitation J1 J2 J3 J4 Wired control infrared T control Temp compensation VIX available not available With no outdoor PCB VIX Cooling only heat pump T VIX J5 J6 Time shorting switch VIX Forced not 2 i 2 Ornarment or not E 2 XI i Oxygen or not XI Vv J7 J8 J9 J10 Other 2P convertible VIX
39. no Is float switch holder tinted es that float can t move or too Adjust holder close to pump motor that interference arises m Check if float switch is in good Yes Replace float condition with multimeter switch no Replace indoor PCB Note Float switch is close in normal state when being activated it is open Voltage between both ends is OV when close approximately 5V when open 38 i Commercial Air Conditioner Model HCFU 42CH03 a e HCFU 42HK03 Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com
40. ooling state of AUTO mode and the compulsory cooling and DRY mode as long as the compressor runs water pump will work and once the compressor stops water pump will stop 5 minutes later 2 In standby state of cooling mode heating mode and fan mode including auto fan mode after water tank is full the float switch will disconnect if the controller detects this signal for 2 seconds the water pump will begin to work After the float resets water pump will continue working and stops 5 minutes later 3 If the water full signal is detected for over 5 minutes the compressor will stop water pump will work for 5 minutes and stop for 5 minutes then repeat as a cycle until the float resets the water pump will stop 5 minutes later if water pump has repeated for 4 cycles the float can not reset and the unit will alarm water drainage abnormal And the water pump will continue the cycle 12 System protection 12 1 3 minute protection for compressor startup After the compressor stops at least 3 minutes later the compressor can restart up the compressor can restart up Being electrifed for the first time there is 3 minute delay protection 23 Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 Haier 12 2 Time shorting function If the time shorting port is in short circuit the unit will perform a 1 60 time shorting control 12 3 High pressure protection After compressor is running for 3 minutes the unit will check the p
41. oom temperature if Tr gt Ts 3 C the unit will enter COOL mode or it will still be in HEAT mode 4 5 For cooling only unit if the unit is at FAN mode if Tr gt Ts 3 C the unit will enter COOL mode 4 6 When the unit is in HEAT mode if indoor heat exchanger temperature rises up to over 63 C the unit will change into COOL mode And within 1 hour the heat exchanger temperature will not be limited the heating operation will stop temporarily 1 hour later the unit will select the proper mode due to the above condition 5 COOL mode control 5 1 4 way valve being powered off compressor run stop will depends on the temperature difference between the room temperature and the set temperature 5 2 cooling mode every time the compressor starts up within 6 minutes the compressor will not be limited by the temperature sensor but the set temperature change shutoff signal and protection action will not be limited by 6 minute protection and the compressor can stop immediately 5 3 ATZ1 compressor will run AT lt 1 compressor will stop run 1 lt AT lt 1 compressor will stay in original state AT run 1 5 4 Anti freezed protection invalid in compulsory operation trial running heating mode When the unit has run for over 6 minutes after compressor stop starts up if indoor coil temperature Tg 1 C the compressor stop and the outdoor motor will stop and the unit will change to FAN mode 9 minutes later after compressor stops and when
42. outdoor motor works at low speed 9 2 Indoor control function 1 General features 1 1 Control mode remotr or wired control connecting port of long distance control passive port control 1 2 Temperature control 16 30 C 1 3 Precise of temperature control 1 C 1 4 Indoor fan speed AUTO HIGH MIDDLE LOW no AUTO when in FAN mode 1 5 Swing control the swing are controlled by the synchronous motor main control board receive usable signal and set in swing mode or remain in other mode 1 6 running mode AUTO COOL DRY FAN and HEAT 1 7 Healthy function 5VDC UV generator 12VDC negrative ion generator high voltage collecting dirt 220VAC negrative ion generator oxygen pump 1 8 Filter up down control adopt double direction synchronous motor 1 9 Auxiliary electric heating function 12VDC control signal 220VAC control signal or control switch 1 10 Fresh air control 12VDC DC motor 220VAC AC control port output 1 11 CLOCK setting TIMER ON OFF ON OFF and SLEEP fuction only TIMER function is viable and temperature variety is unviable when running the SLEEP function in FAN mode 1 12 Drain system function Water level inspection and water pump control 1 13 Compulsory cooling operation 1 14 Safety and protection devices 3 minute protection for compressor startup freeze protection device overheat protection device temperature cutoff protection sensor failure drainage pressure communication etc protectio
43. p and indoor motor has run for over 30 seconds if indoor coil temperature Tg gt 60 C outdoor motor will stop if Tg lt 56 C and outdoor motor has stop for 21 AT a ie Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 45s outdoor motor will run again if Tg gt 73 C the compressor will stop and indoor motor will run according to the thermostat state After the compressor stops for 3 minutes and Tg reduces to 48 C the unit will resume to heating mode and the compressor and the outdoor motor will run again 7 5 Temperature cutoff protection In heating mode besides the defrosting the unit will check indoor coil temperature every time the compressor has run for 1 minutes when indoor coil temperature Tg lt Tr 5 the unit will stop and 3 minutes later restart up if the temperature cutoff occurs for 3 times continuously the unit will stop and alarm 7 6 Anti cold air function in heating mode After entering heating mode or last defrosting is over the compressor will start up if Tg lt 28 C indoor motor will stop if 38 C Tg 28 C indoor motor will run at low speed if Tg 38 C or the compressor has run for over 4 minutes indoor motor will run at the set speed once the motor has started up it will not stop because of Tg reduction 7 7 Blowing remaining heat function In heating mode the thermostat is OFF the compressor stops indoor motor will run at low speed until Tg lt 28 C and has run for 50 seconds at l
44. p switch position in wired control type Only one indoor unit of all indoor units connected with wired controller is the master unit whose address is 0 function selection switch 49 SW5 3 is 1 The others are slave units and the quantity can be 0 15 whose addresses SW1 1 4 from 1 15 and cannot repeat Wiring request in wired control type the wired controller ports A B C are connected with indoor port CN5 1 2 3 through 3 core shield wire Requirements 1 PortA only connects with either of indoor port CN5 1 2 Port B connects with port CN5 2 of all indoor units 3 Port C connects with port CN5 3 of all indoor units Dip switch position in central control type the addresses SW1 1 4 SW2 1 4 of indoor units connected with central controller can not repeat In principle they should be in the order from small to big Wiring request in central control type port A B is connected with indoor port CN16 A B through 2 core shield wire Requirements 1 PortA connects with port CN16 A of all indoor units 2 Port B connects with port CN16 B of all indoor units When only use remote control type please select remote control unit and install according to installation manual there is no other special request When only use wired control type please select wired control unit and install according to installation manual When control multi indoor units take care the requirements of dip switch and wiring there is no oth
45. rrect phases Short connect the compulsory cooling and electrify heating port last over 5 seconds the 3 phase power detect will be cancelled Detect 3 phase immediately after been electrified system will run after 10 seconds 3 4 1 Detect no signal for over 5 seconds indicate phase loss resume normal if signal is resumed Detect the the phase is contrary for over 5 seconds indicate phase failure resume normal if signal is resumed 3 4 2 The compressor will stop and 3 minute protection is realized if failure occurs The outdoor PCB will not run normally if power L1 and N lack or the position between N and L2 L3 wrong the position of L1 and N wrong will indicate communication error E9 3 5 High Low pressure protection 3 5 1 High pressure protection 17 lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 There is no shield time for high pressure protection the system will check the high pressure after compressor run if the signal cut off lasts more than 30 seconds compressor and outdoor motor will stop and 3 minutes later it will resume If within 30 minutes there are stop phenomenon 3 times because of pressure over high the compressor will stop and LCD will display E6 only shut off and powered on again the protection can be cancelled Check the high pressure in standby and deforst mode failure will be indicated if the signal cut off lasts more than 30 seconds 3 5 2 Low pressure protection 1 Check the pressure swi
46. s supply voltage too low Especially es mM when compressor starts up modify power supply circuit no Y i no T Is supply wire securely re wiring connected yes Y Is compressor current more than overcurrent Confirm detecting circuit protection limit Is current detecting circuit in IL is abnormal replace good condition outdoor PCB yes Is compressor in no resistance of compressor yes replace compressor good condition winding incorrect Is it stuck yes Y Is running capacitor in good condition replace running capacitor yes Is pressure normal no Check 1 Is a valve in system shut off 2 Is piping clogged 3 Is system overfed is there air in system 4 Cooling cycle Is condenser dirty Does outdoor fan motor run at low speed or stop 5 Heating cycle Is evaporator or filter dirty Does indoor fan motor run at low speed or stop 6 Is ambient temperature too high Is system overloaded 7 Drainage failure confirm the malfunction according to the fault code list Is drain pipe clogged Unclog pipe and water pump no Y 13 pump motor 5 _ Replace water good condition pump yes Is drain pan dirty and yes amp de float switch ineffective ean drain pan
47. swing mode 1 means common simultaneous motor 0 means special swing motor J8 SW5 2 function selection system combination 1means fixed frequency single unit 0 means fixed frequency multi split 49 SW5 3 function selection group control 1 stands for the master unit its address in wired controller is 0 0 stands for the slave units the address should be set by the dip switch their addresses only can be in the range 1 15 J10 SW5 4 function selection preset 1 no meaning 0 no meaning 0010451167E PCB information control type Control type selection between remote and wired select by dip switch J1 SW3 1 1 means remote control 0 means wired control For remote control type please use remote controller YR H71 and a remote receiver is equipped with indoor unit For wired control type wired controller YR E12 will be used 3 core shied wire is equipped with iH a lef Commercial Air Conditioner Model HCFU 42CH03 HCFU 42HK03 indoor unit Door card control controls ON OFF the start up setting will comply with last time request memorized according to condition memorize function Its difference with emergency switch of convertible type unit lies the emergency switch control will perform in the condition 24degrees auto fan speed in auto mode The function combination between door card and remote wired control type select by dip switch SW2 4 0 means and 1 means later coming is preferential Di
48. tCurent Ll A Class of anti electric shock cassi cassi utbeaer L A 30 opera ingpressureofheatside ma 28 28 Type x Number Fan Speed H M L an motor output power ir H M L Type Diameter Heat exchanger Total Area Temp scope L we Dimension LxWxH 1580 700 240 LxWxH 1710 790 315 mm PP 20 25 Remote 53 51 49 54 61 HCFU 42HK03 WHITE JT160GABY1L DAKIN Oil mode Compressor Type Protection type SUNISO 4GSDID K DAPHNE SE56P Type x Number Ea Speed an motor output power ir H M L 1500 1700 Heat exchanger Row Fin pitch SCROLL Temp scope cooling 43 60 heating 6 7 inner protection Direct Start Axial 2 840150 0 08 2 7000 inner grooved 9 52 LxWxH 948 340 1250 LxWxH 1050 440 1375 Capillary tube Automatic dB A Weight Net Shipping 101 106 Refrigerant Type Charge g R22 2800G mm 99 52 Gas mm 919 05 Connecting Method Flared Drop 2 Between I D amp O D MAX Piping length pom j D HCFU 42HK03 WHITE centrifugal 4 1250 1150 1100 2000 1800 1400 inner grooved q7 gt m 5 2 ZI Indoor unit Six gt lt a 5 2 5 8 2 519 8 e 2 o ars e e 2 O EA 5 2 3 2 2 Outdoor unit zx Cl 9 lo g 3 2 D N centrifuga O 12504150410 O r 049 2 20001800400
49. tch immediately when compressor is start the compressor will stop if signal cut off lasts for 30 seconds if cut off 3 times continuously in 30 minutes compressor will stop and alarm 2 In heating low pressure switch will be shielded in 10 minutes after the compressor start 3 In defrosting low pressure switch will not be checked In 5 minute after defrost is over check the low pressure switch Check the low pressure switch during standby mode the compressor will not start if low pressure switch activate during standby compressor will stop and indicate low pressure failure if low pressure switch has acteivated for 30 seconds 4 Failure will occur if low pressure switch opens 3 times continuously in 30 seconds failure can be resumable when power off 3 6 3 minutes protection for compressor After compressor stops it cannot be started until 3 minutes later During the machine s running if the time not more than 3 minutes after power is off the compressor cannot be restarted until 3 minutes later after it is powered on again 3 7 Sensor broken down protection a Check if sensor breaks down Outdoor board checks the sensor in short circuit or in open circuit or near to short open circuit for 2 minutes continuously then it will adjust the sensor broken down b How to deal with it If the outdoor ambient temp sensor the outdoor coil temp sensor and dicharge temp sensor have broken down the unit will stop running and alarm E3 E4 E4 simult
50. tdoor pipe temp sensor broken down or short due to the signal sensor failure circuit for more than 2m resumable continuously 5 72 48H 10D Overcurrent Detector CT current is above Need to be the limit 3 times within 30m checked reset 6 83 53H 14D High pressure High pressure switch acts for Need to malfunction 3 times in 30m checked reset 7 71 47H 22D Power failure Wrong phase phase Need to be failure or loss checked reset 8 07 07H 06D Communication communication abnormal for due to the signal failure between more than 4m continuously resumable wired controller and indoor unit 9 06 06H 05D Communication communication abnormal for due to the signal failure between more than 4m continuously resumable indoor and outdoor units 11 11 0 30D External alarm External alarm is cut out for due to the signal signal input 10s or longer resumable 12 03 03H 20D Fault in coil suction sensor broken down or short due to the signal line temp sensor circuit for more than 2m resumable continuously 13 13 0DH 31D Temperature Directional valve malfunction Need to be shut off repeats 3 times checked reset 14 76 4CH 15D Fault in discharging sensor broken down or short due to the signal temp sensor circuit for more than 2m resumable continuously 15 05 05H 17D EEPROM error EEPROM data loss Default operation 16 84 54H 26D Low pressure low pressure switch is Need to be malfu
51. will change due to the outdoor ambient temp Outdoor ambient temp 28 C enter high speed outdoor ambient temp 26 C enter high speed 26 lt outdoor ambient temp x 28 C keep the current speed In running the system will be controlled as 2 C temperature tolerance if outdoor ambient temp lt 26 C enter low speed if outdoor ambient temp gt 28 C enter high speed 1 3 Heating mode heat pump model 1 3 1 Indoor coil temp 50 C outdoor motor will run at low speed 1 3 2 Indoor coil temp 40 C outdoor motor will run at high speed 1 3 3 40 C x indoor coil temp 50 C outdoor motor will change with outdoor ambient temp Outdoor ambient temp 13 C enter high speed Outdoor ambient temp 15 C enter low speed 13 lt Outdoor ambient temp x 15 C keep the current speed In running the system will be controlled as 2 C temperature tolerance if outdoor ambient temp lt 13 C enter high speed if outdoor ambient temp 15 enter low speed Every step will run at least 45 seconds and the motor will start up 2 seconds earlier than compressor 2 Defrost control 2 1 Defrosting condition In heating mode the compressor will run for 30 minutes continuously or run for 45 minutes in all and for over 5 minutes contineously outdoor motor at least runs for 2 minutes If the outdoor ambient temperature and outdoor coil temperature can comply with the shadow area in the figure and keep for 1 minute 2 2 Quit condition Outdoor coil

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