Haier 1U48IN1EAB Service Manual Download

Page: 43 / 54

Single Split

check fan motor and capacitor

Note: The protection is activated when temperature is higher than 120° C and restored when lower than 100° C.

Conduct leak test.

Evacuate and recharge

yes

Measure equalized pressure and

running pressure to see if the

system is overfed or starved. Is

there a leak? Is capillary tube

clogged?

repair or replace

yes

Is piping twisted or

deformed?

cleaning

Is filter or heat exchanger dirty?

yes

Does indoor fan motor work properly in

heating cycle? Does outdoor fan motor

work properly in cooling cycle?

replace PCB

Air conditioner is

running in bad

condition?

Unclog piping

If the pipe is

blocked?

Are they too low?

Are high pressure and

low pressure normal?

replace PCB

yes

Is discharging temperature

sensor in good condition?

Is discharging temperature detected

by a thermometer too high?

open valves

Are stop valves in suction pipe and

liquid pipe of outdoor unit open?

Refrigerant charge is needed

start

replace discharging sensor

1) Compressor discharging temperature protection

yes

Summary of Contents for 1U48IN1EAB

Page 1: ...Commercial Air Conditioning SERVICE MANUAL AP48KN1EAA H Feature High Reliability Double fan outdoor unit Long Pipe Length High Height Drop SYJS 11 2015REV A Edition 2015 11 1U48IN1EAB ...

Page 2: ...RES 1 2 Specification 2 3 Dimension 4 4 Piping diagram 5 5 Installation 6 6 Noise level 22 7 Wiring diagram 23 8 PCB photo 25 9 Electric control functions 27 10 Failure code 39 11 Troubleshooing 40 12 Sensor characteristic 48 Content ...

Page 3: ...outdoor unit A single split 1 2 Product features High Efficiency Energy Saving High EER compressor EER up to 2 85 High efficiency fan Double fan outdoor unit The air conditioner adopts two stepping motors to combine vertical and horizontal auto swing to circulate cool warm air to every corner of the room Long Pipe Length High Height Drop Piping Length 30m Height drop 20m Heat pump 1 version 1 Appe...

Page 4: ... of anti electric shock CLASS I Circuit breaker A 30 Max operating pressure of heat side Mpa 4 15 4 15 Max operating pressure of cold side Mpa 4 15 4 15 Indoor unit Unit model color AP48KN1EAA H Fan Type Number centrifugal 1 Speed H M L r min 430 400 370 Fan motor output power kW 0 09 Air flow H M L m h 1800 Heat exchanger Type Diameter mm inner grooved pipe φ7 Total Area m 0 45 Temp scope Dimensi...

Page 5: ...ne Refrigerant control method mm mm capillary Defrosting auto Volume of Accumulator L 3 Noise level dB A 58 Type of Four way valve DSF 20 material of reduce noise XPE crankcase heater power W 40 PIPING Refrigerant Type Charge g R410A 3400 Recharge quantity g m 65 Pipe Liquid mm φ9 52 Gas mm φ19 05 Connecting Method Flared Between I D O D MAX Drop m 20 MAX Piping length m 30 Norminal condition indo...

Page 6: ...Single Split 4 3 Dimension 模式风速开关温度健康温度 1850 600 350 88 67 φ 80 88 67 φ 80 Indoor unit AP48KN1EAA H Indoor unit 1U48IN1EAB 190 580 190 380 960 415 1250 ...

Page 7: ...top valve 3 way valvel liquid side condensor evaporator defrosting temp sensor maintencance valve maintance valve high pressure switch heating cooling capillary discharging temp sensor unloading valve heater low pressure switch 3 way valve gas side indoor coil temp sensor ...

Page 8: ...Single Split 6 5 Installation 1 2 1 2 3 4 1 2 1 2 3 4 2 ...

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Page 16: ...Single Split 14 pipe direction Right Left Rear Bottom Indoor outdoor unit connection ...

Page 17: ...ore drill 4 Spanner dia 17 27mm 5 Spanner 14 17 27mm 6 Pipe cutter 7 Flaring tool 8 Knife 9 Nipper 10 Gas leakage detector or soap water 11 Measuring tape 12 Reamer 13 Refrigerant oil Following parts shall be field supplied Mark Parts name Adhesive tape Pipe clip Drain hose A B C Tools necessary ...

Page 18: ...ot cause vibration and noise Place where discharged wind and noise doesn t cause a nuisance to the neighbors Place where is less affected by rain or direct sunlight and is sufficiently ventilated or to install a shield Place with enough space for smooth air flow Fixing of the unit Fix outdoor unit using M10 bolt to concrete floor horizontally If installed on the wall or on top of a roof bracket sh...

Page 19: ...rection refer to installation drawings 2 Making a wall hole Drill a hole of 70mm dia with a little slope towards outside Install piping hole cover and seal it with putty after installation Fixing of indoor unit INDOOR SIDE OUTDOOR SIDE wall hole wall thickness Cross section of wall hole 70mm With the unit set up vertically fix the fitting metal to the unit with screws then fix the fitting metal to...

Page 20: ...with a hammer or a saw the lid for piping according to piping direction According to the piping method connect the piping on indoor unit with union of connecting pipe Arrange the piping as per the wall hole and bind drain hose connecting electric cable and piping together with polyethylene tape Insert the bound piping connecting electric cable and drain hose through wall hole to connect with outdo...

Page 21: ...ose of the indoor and outdoor valve center both liquid and gas side dismount the repair valve cap Vacuumizing through the charge mouth of the repair valve 3 After vacuumizing fasten the repair valve and dismount the cap of the big and small stop valve then loosen the stop valve center completely and fasten the big and small stop valve 5 Extra charging amount of the refrigerant 25m 1500 30m 1875 Ar...

Page 22: ... into terminal block then tighten it Pull the cable gently to make sure it is tight Replace cover after wiring OK NO terminal block table clamp Note When connecting indoor and outdoor wire check the number on indoor and outdoor terminal blocks Incorrect wiring may damage air conditioner s controller or cause operation failure Electric wiring must be done by qualified person Use copper wire only th...

Page 23: ...y fixed Is draminage securely carried out Is earth line grounding securely connected Is power supply voltage abided by the code Is there any noise Is control display normal Is cooling operation normal Is room temp regulator normal 1 Pipe cutting and flaring Be sure to carry out deburring after pipe cutting with a pipe cutter Insert flaring tool to make a flare Correct Lean Damaged flare Crack Part...

Page 24: ... noise level low heating med heating high heating low cooling med cooling high cooling low fan med fan high fan 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 25 32 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000 20000 噪音 DB 1 3 octave band frequency Hz high cooling low cooling high heating low heating 1U48IN1EAB noise le...

Page 25: ...float switch 6 Put SW 2 3 to ON position for cabinet unit T6 3A 250VAC CN11 CN12 CONTROLLER CN20CN21 BM 1234 LONG DISTANCE CONTROLLER DETECTION CN2 CN4 M M CN5 PUMP M Y G M W WHITE B BLACK R RED Y G YELLEW GREEN 1 BM 2 3 4 ON OFF COOL HEAT K SERIAL CABINET UNIT CONTROLLER TEMPERATURE AMENDMENT COOL HEAT WIRED CONTROL REMOTE CONTROL YES NO M M CIRCUIT DIAGRAM OF INDOOR UNIT 0010578100 ROOM TEMP SEN...

Page 26: ...be connected according to different models 2 Outdoor terminal R 8 T is corresponding to U V W and T1 T2 T3 3 For model KF R LW JZ830 should roll the wire round CT for the other models just make wire pass the CT CN4 CN14 CN7 CN5 CN13 BL BL B Y G R R T1 T2 T3 W W M CT Y G Y G high pressure switch low pressure switch FAN MOTOR CAPACITOR FAN MOTOR CAPACITOR 4 way valve magnetic contactor compressor he...

Page 27: ...Single Split 25 8 PCB photo Indoor PCB 0010451850 ...

Page 28: ...Single Split 26 Outdoor PCB 0010452441 ...

Page 29: ... LED will be off If the controller is in TIMER and SLEEP mode the TIMER LED will be on if it is not in TIMER and SLEEP mode the TIMER LED will be off 2 3 Temperature compensation 4 control Select by the dip switch on indoor PCB 2 4 There is set temperature in AUTO mode as default 2 5 Tr stands for room temperature Ts stands for set temperature Tg stands for indoor coil temperature Tc stands for de...

Page 30: ...erature difference between the room temperature at present and the set temperature 2 In cooling mode every time the compressor starts up thermostat ON 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 3 ΔT 1 compressor wi...

Page 31: ... when heating for the first time then the 4 way valve will be electrified before compressor start b Only in COOL DRY FAN not heating mode 4 way valve and compressor will power off at the same time the 4 way valve keeps being powered when shutoff thermostat OFF and compressor stop Note 4 way valve control is realized by outdoor unit for the unit with outdoor PCB not concurrent completely 2 In heati...

Page 32: ...n heating mode In defrosting and when the compressor resumes to running for 3 minutes after defrosting is over the unit will not adjust the sensor failure Manual defrost In heating mode the set temperature 30 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 Send manual defrost to outdoor unit the indoor un...

Page 33: ... at SLEEP mode for 1 hour the set temperature will rise 1 another 1 hour later the set temperature will rise another 1 the unit continues running for 6 hours then the unit will stop b Standard sleep function in heating mode after running at SLEEP mode for 1 hour the set temperature reduces 2 another 1 hour later the set temperature will reduce 2 and another 3 hours later the set temperature rises ...

Page 34: ...after conditioner being electrified the buzzer will sound once and enter time shorting operation the unit will perform a 1 60 time shorting control 7 Auto restart function In 5 seconds press the SLEEP button for 10 times the buzzer sounds 4 times that is set as auto restart mode if shutoff and power again the system will run in the original state before been shutoff The following information will ...

Page 35: ... standby state detecting the pressure switch off for continued 30s alarm error In cooling the compressor start up and enter pressure signal detecting In heating after the compressor start up for 3 minute enter pressure signal detecting When defrosting doesn t detect pressure signal In 30 minutes it occurs 3 times the system will alarm error Other detecting the low pressure switch off maintain 30s ...

Page 36: ...ent temp 15 enter low speed 13 Outdoor ambient temp 15 keep the current speed In running the system will be controlled as 2 temperature tolerance If outdoor ambient temp 13 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 co...

Page 37: ...refer to the following chart 3 No matter the ambient temperature when Tp 16 enter defrost Type 2 Non standard defrost rectify defrost data by the device 1 If Tr 6 when Tp 6 enter defrost 2 If 18 Tr 6 when Tp 6 please refer to the following chart 3 No matter the ambient temperature when Tp 18 enter defrost ...

Page 38: ...low speed When indoor PCB receive the signal of outdoor motor stop from outdoor PCB over 2 minutes if indoor coil temp T6 70 or 10 minutes later indoor coil temp T5 56 send compressor stop signal to outdoor unit if indoor coil temp 46 and the compressor has stopped over 3 minutes send compressor run signal to outdoor unit and compressor resume to normal The outdoor motor is control by outdoor unit...

Page 39: ...tor 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 Detecting the high pressure during in standby and defrosting state it will alarm error once the signal disconnect over 30 seconds Low pressure protect...

Page 40: ...oor temp sensor and the outdoor coil pipe temp sensor used in the fan control and defrosting control 4 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 4 9 4 way valve control The first time for heating the outdoor fan motor and 4 way valve power on simultaneously the compre...

Page 41: ...circuit or short circuit for 2min or longer 4 E3 3 Outdoor ambient sensor is open circuit or short circuit for 2min or longer 5 E4 4 Outdoor discharge pipe temp sensor is open circuit or short circuit for 2min or longer 6 E5 5 Current is too high or the turn of 3 phase is wrong 7 E6 6 High or low pressure switch is open circle for 2 minutes 8 E8 8 Communication problem between indoor and controlle...

Page 42: ...f and voltage and current of check points when power on Disconnect contactor and reconnect it check if fuse or varistor is broken Does the same fault occur before Switch off air conditioner temporarily Switch on air conditioner again after 1 minute Does the same fault occur before yes no Switch on air conditioner Is the feature not available for present product Fault confirmation Explain product f...

Page 43: ...yes yes no no Does indoor fan motor work properly in heating cycle Does outdoor fan motor work properly in cooling cycle replace PCB Air conditioner is running in bad condition Unclog piping If the pipe is blocked Are they too low Are high pressure and low pressure normal replace PCB yes yes yes yes yes yes no no no Is discharging temperature sensor in good condition no Is discharging temperature ...

Page 44: ...ssure switch yes if outdoor stop valves of gas pipe and liquid pipe are open totally no Open the valves yes Is piping twisted or deformed yes Repair pipe no Does indoor fan work properly during cooling cycle Does outdoor fan work properly during heating cycle no Repair fan motor or fan capacitor yes Is indoor filter or heat exchanger dirty yes Cleaning no Measure equalized pressure and time to rea...

Page 45: ...h no yes if outdoor stop valves of gas pipe and liquid pipe are open totally Open the valves no Is indoor filter or heat exchanger dirty Cleaning yes yes Repair fan motor or fan capacitor no no Repair pipe yes Is piping twisted or deformed yes Does indoor fan work properly during cooling cycle Does outdoor fan work properly during heating cycle no Check if system is overfed according to equalized ...

Page 46: ...es yes no no no no 5 Communication error between indoor and outdoor units Confirm commum ication failure according to the fault code list re wiring change defective parts yes Does indoor communication indicator flash Confirm the fault indicator is communication failure Are communication wire S and supply wires L and N properly connected Grounded well if communication wire is broken replace indoor ...

Page 47: ...ng is correct check if failure disappears after changing transformer or PCB no no check if failure disappears after changing wired controller yes wired controller is broken 7 Over current protection in 3 phase fixed frequency models Is three phase circuit not balanced Is supply voltage too low Is supply voltage too low at compressor start up yes no re wiring yes Is compressor current more than ove...

Page 48: ...ing yes Is compressor current more than overcurrent protection limit Is current detecting circuit in good condition no Confirm detecting circuit is abnormal replace outdoorPCB yes Is compressor in good condition no Is resistance of compressor winding incorrect Is it stuck replace compressor yes yes Is running capacitor in good condition no replace running capacitor yes Is pressure normal no Check ...

Page 49: ...ion caused by lack of refrigerant charge refrigerant Is heat exchange effect adversely affected by heavy dust in indoor and outdoor units cleaning 10 Temperature cutoff protection confirm the malfunction according to the fault c ode list yes yes no yes no yes no yes no yes no Replace sensor yes Replace indoor PCB 11 Fault in drain system confirm the malfunction according tothe fault code list no y...

Page 50: ...21 18 33 7 23 58 2 9 17 76 51 9 20 21 34 6 95 59 2 81 16 72 33 10 19 3 35 6 68 60 2 72 15 68 41 11 18 43 36 5 43 61 2 63 14 64 73 12 17 61 37 5 6 62 2 54 13 61 27 13 16 83 38 5 59 63 2 49 12 58 02 14 16 09 39 5 73 64 2 38 11 54 97 15 15 38 40 5 52 65 2 3 10 52 1 16 14 71 41 5 32 66 2 23 9 49 4 17 14 08 42 5 12 67 2 16 8 46 86 18 13 48 43 4 93 68 2 09 7 44 46 19 12 9 44 4 9 69 2 03 6 42 21 20 12 36...

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Page 54: ...Single Split 52 Haier Commercial Air Condition ADDRESS No 1 Haier Road Hi tech Zone Qingdao 266101 P R China Web Http www haier com Haier reserves the right to make change without any notice ...

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