Commercial Air Conditioning SERVICE MANUAL
Contents
1. LX 31 Power cord View of the detector interface 85 88 C ee eel ee Resetting Air Conditoner HMI Power on off Indoor unit CN2 W LJ LI o Outdoor unit Er Em E E E 3 Use weekly timer to realize two units auto changeover function applicable for the units which need detector to realize the weekly timer function such as cabinet type console type The detector is connected with two same model air conditioners by the 4 core screw fixed terminals of air conditioner interface then accordingly set the dial code switch of the detector in double units working mode and the double units switch time is default 24 hours the address number setting shall be performed according the planned program for specific setting and corresponding address please refer to the dial code switch setting in detector s operation manual use weekly timer to fulfill double units switch weekly timing function the system needs to be connected with weekly timer each detector a2. 6 7812 218 N _ Uh 5 Lr 7805 CNS 3 9 CNI Lio cai p50 4 T E mg I RES HEAT e 552 IE RI1RIO g 227 Tt an ROE LS COO SS E 2 5 Ug Ee b dre RIS CF 55 Ee wee 0 2 8 ct 525 NB or 018 R24 Si C IF ns x CN8 2 B R23 d R25 ak E6 E eS 1 Rae L az R41 E R59 R60 e N3 ia a Ke EE me feet f S R15 5 aed vi 4 PSL RS 07 06 He E eg i i i A R32 qp 7 Ras M W Aq Or R33 5 2 L 11 D16 R34 ST m CC W we VER A J No Port Function 1 L1 3 phase L1 250 2 L2 3 phase L1 250 3 L3 3 phase L1 250 4 N Neutral wire of three phase N 250 5 S Communication between indoor and outdoor units 250 6 CN1 Second side of transformer B3B XH 7 CN2 High pressure switch B2B VH 8 CN3 Outdoor ambient temp sensor B2B XH 9 4 Primary side of transformer RTB 1 5 2P 10 CN5 4 way valve B2P3 VH 14 CN7 Control port for AC contactor B2P3 VH 12 CN8 Connection port of outdoor device B3B XH 13 CN9 Outdoor fan motor B3P5 VH 14 CN10 Low pressure switch B2B VH 15 CN11 Discharging sensor B2B XH 16 CN12 Outdoor defrost sensor B2B XH 17 Fuse T3 15A 250VAC 18 SW1 Dip switch H a
3. 1 i I El rem J LOW PRESSURE SWITCH 2 lt CN3 5P 10 n OUTDOOR AMBIENT SENSOR Lg OUTDOOR PIPING SENSOR 5 COMPRESSOR VENT SENSOR 1 L3 en R BL 112 FUSE R L1 4 1 2 N 3 15 250 YIG CRANKCASE T B HEATER RIS 71315 NOTE 1 DASHED PART D IS NOT AVAILABLE IN COOLING CAPACITY BELOW 36000Btu YIG VELLOWIGREEN TELS 2 DASHED PARTS 2 ARE NOT AVAILABLE IN ONLY COOLING TYPE ee 3 DASHEDPART IS OPTIONAL FOR LOW AMBIENT TEMP COOLING AND THERE IS NO FAN MOTOR SPEED CONTRLLER IN NORMAL TYPE GR GRAY POWER SUPPLY TO INDOOR UNIT 4 DASHED PARTS 5 6 ARE NOT AVAILABLE IN SOME TYPE 5 FOR COOLING CAPACITY IS 52000BTU AND 28000BTU TYPES THE DIP SWITCH SW1 IS ON 5P SIDE FOR COOLING CAPACITY IS 42000BTU AND 36000BTU TYPES THE DIP SWITCH SW1 IS ON 10P SIDE 6 FOR COOLING CAPACITY IS 52000BTU TYPE THE LINE THROUGH CT IS ONE CIRCUIT FOR COOLING CAPACITY IS 42000BTU 36000BTU AND 28000BTU TYPES THE LINE THROUGH CT IS TWO CIRCUITS 53 HPU 42CV03 HPU 42HV03 Model Commercial Air Conditioner ircuit diagram
4. 36 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Installation procedure 1 Wire connecting Power supply1PH 220 240V 50Hz To connect the process control monitor detector RS 485 RS 232 AB To connect the computer or MODEM Ef ele 2 Installation method A wiring box cover must be used The central controller shall be installed into the installation box built in the wall fastening with 4 screws as shown 91 5mm 1 BY IIT S el 8 6mm fee amp Rear view Note Please confirm the supply voltage of AC220 240V and correct wiring In application environment with intense electromagnetic interference the central controller should be shielded while the connecting wire between the monitor and the central controller should be shielded twin twisted wire Exterior dimension ROOM TEMP H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 As illustrated Figure 1 is the front view and Figure 2 is the side view The central controller is 180mm long 120mm wide and 64 4 mm thick Fig2 38 Model HPU 42CV03 HPU 42HV03 Commercial Air Conditioner Haier 8 Refrigerant Diagram 8 1 HPU 4
5. J l i J EE i i 1 i 1 i 1 i 1 CN16 CN16 0 d d c 8 Realizing group control function with the central controller for the unit which needs the detector such as cosole unit cabinet units RS 485 bus Upper A Lower B 7 A AN BRS 485A 85 232 Rear view of the B Power on off central controller Outdoor unit E ET CT E ER 9 Realizing double unit switch over group control function with the centralcontroller for the unit which needs the detector such as cosole unit cabinet units
6. 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 detailed method please refer to the following information item Model Function Po 1 heating Capacity BTU h 41000 Sensible heat ratio 7096 Max power input 4400 Dehumidifying capacity 10 xm3 h 5 0 Connecting cable section Wired control cable for wired control unit section Power source ferred contol unt 3N 380 400V 50HZ Running Max Running current TT Cooling 6 9 7 8 Heating 7 0 8 3 Start Current Class of anti electric shock TASS Circuit breaker T oa 0 Max operating pressure of heat side 28 Max operating pressure of cold side 2B Unit model color TOME Type Number ER EE Fan motor output power w 09 Air flow H M L Type Diameter mm inner grooved p7 5 O 5 External LxWxH mmxmmxmm 1850 600 350 9 LxWxH mmxmmxmm 1980660420 Drainage pipe materal LLL Control type Remote wired model Remote Fresh air hole dimension Outlet distribution hole dimension mm z kg kg 59 70 5 Weight Mei Shipping Unit model color 42 Mode Mandadure VR amp 4KS TFP MZ ICOPELA
7. Indoor units H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Precautions for refrigerant piping Do not twist or crush piping Be sure that no dust is mixed in piping Bend piping with as wide angle as possible Keep insulating both gas and liquid piping Check flare connected area for gas leakage Piping connection e Connecting method indoor unit Apply refrigerant oil at half union as large and flare nut To bend a pipe give the roundness as possible not to crush the pipe When connecting pipe hold the pipe centre to centre then screw nut on by hand refer to Fig Be careful not to let foreign matters such as sands enter the pipe Pipe diameter Fastening torque Liquid pipe 6 35mm 14 2 17 2N m Forced fastening without centering Liquid pipe 9 52mm 32 7 39 9N m may damage the threads and cause Gas pipe 12 7mm 49 5 60 3N m a gas leakage Gas pipe 15 88mm 61 8 75 4N m Gas pipe 19 05mm 97 2 118 6N m Air discharging method After finishing connection of refrigerant pipe it shall perform air tightness test e The air tightness test adopts nitrogen tank to give pressure according to the pipe connection mode as the following figure shown The gas and liquid valve are all in close state In order to prevent the nitrogen entering the circulation system of outdoor unit tighten the valve rod before giving pressure both gas and liquid valve rods Low pressure Ds 3 way valve t
8. KFR 120LW K E 0010452378 we 10105 1205 For outdoor unit of HPU HPU 42CV03 HPU 42HV03 Commercial Air Conditioner Model Haier 100UF 16V 22uF 250V E8 Li M 4007 D4 RIS 10K 0 5W R16 sent 250 4007 10K 0 5W 470UF 25V TLP371 521 Lx FUSE T3 15A 250V CN4 5 RV 1 E23 C24 S14K350 RTB 1 5 2P KR EE 1 0 1U 275VAC 0 1Uf 275VAC 250 2200UF 35V AND 1B 202 72 OD Ib Ee V DA KFR 120LW K Eo E 0010452378 oet A HPU 42CV03 HPU 42HV03 D D D D Commercial Air Conditioner Model alef For outdoor unit of HPU 42HV03 SIE R56 TEST TJC8 03A CI F R TMP86P807N I 0057W 35 B2B XH CN3 R39 4 7UF 16V R19 4 7 BRI CN2 2 B2B VH 1 24 0 2 34 e BOB VH 1 T Wier DE 5 51K 1 627 C10 103 103 R51 35 R53 al 10K 1 R48 2K 3 4 IK 2 c5 Pi 1 103
9. Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 11 4 Sensor characteristic Characteristic een aren 25 10 9 3 B25 50 3700K 3 s 254 4s 5 e ae mm s an oss a7 s 20 as en s mm o an 29 Las em e omae o9 8e 38 n 19 ar sm o zm es 9 37 me 3s 75 1 1 on es s 32 38 s m se s ve a so v moe 3 ss so 28 1 3m ie Be 3 s 272 o ow x oue e se 62 Haier R25 23K 2 2 5 25 50 4200 3 Pec s ao rire Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 80 50 0 3 25 80 4450 3 7s 60 me aa 3 395 2060 3 4 295 Po sem 225 Pe uw o ms 52 1504 63 H Commercial Air Conditioner R25 5KO 1 B25 50 3450K 1 64 Model HPU 42CV03 HPU 42HV03 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101
10. 88 88 120 102 Re 55H o CD Les 33 Haier Central Controller YCZ A001 Function description LOCK display Commercial Air Conditioner Display of current unit number Location of the indicating curso Display of MONI SET Generally indicating MONI When setting ON OFF or other items it changes from MONI into SET Display of the connected units Flashing indicates the cursor for current unit or that the monitor and air conditioner are in group selection status Lighted indicates the monitor for the unit has been linked into the network otherwise not linked Lighted m indicates the unit is in on mode otherwise in off mode Flashing m indicates fault Model HPU 42CV03 HPU 42HV03 Display of operation mode and signal emitting Display of fan speed and louver Total on Total off indicator Total on Total off key Display of temperature setting Flashing of the current unit indicates the cursor flashing of non current unit indicates the unit is in group selection status Direction keys Down Left 4 Right gt Used to select the current unit number SELECT key To determine the selected unit number during group sele
11. DDI NG R47 B3B XH i 104 La ee Rad IK 5 TT Lee R55 10K t IHH L 5 ube devo IC6 TLP521 VSS CLK XIN XOUT VPP TEST P37 AINS STOPS P36 AIN4 STOP4 P35 AIN3 STOP3 P34 AIN2 STOP2 P33 AINI P32 AINO XTOUT 22 P31 TC4 PD04 PWM4 PPG4 RESET STOP INTS P20 P30 TC3 PDO3 PWM3 PIX DVO PLI INT1 PIO INTO PO7 TC1 INT4 POG INT3 PPG POS SS 2 fa TAGE HJWD 1 2 aAT OLASE PGWD B2B XH il N6 901 IC7 521 9013 NS 2 Nol Aol AGE YJTQ Th B2B XH CN9 892 1CC C H band IL lao 5 892 1 9013 N4 9013 892 1AC C ND UEV 0 2 LEA V DIP dE AU42NAIBEA 0010452441 JG 20 HPU 42Cy03 HPU 42HV03 Commercial Air Conditioner Model Haier 100UF 16V 2 3 4 22uF 250V E8 n H 200K EL EX D2 NM 1N4007 560 5 11 Di 1
12. Haier 1 2 3 4 0 033UF 120_ L1 12 x gt Ll 2 2 T J 1 250 d ra 3 1 CNII 250 187 CNI9 o 892 1AC 12VDC 187 LOW 1 YLED 187 OXYGEN 3 R34 CNI2 250 S 7 IC2 ULN2003 E MED A 2 2 Q2 Q3 5 4 Q4 x z MC68HC908GTIGCP jo 52 S CNI3 250 4 9 VDDA 3 A7 mp IK 1 5 TLP371 1 VSSA PTA6 KBD6 m PTE2 PTAS KBDS GND PTE3 OSC2 PTA4 KBD4 PTE4OSC1 PTA3 KBD3 gt RST PTA2 KBD2 a PTCO PTAI KBDI 1 PTAO KBDO PTC2 Vrefl ADC e PTC3 Vrefh ADC Iu 5 PTC4 PTB7 AD7 PTEO TXD PTB6 AD6 CN7 ET PTEIRXD PTBSADS r ce ROME SE IRQ 4 102 8 45 4 prpg 5 PTDO SS PTB3 AD3 8 IK 3 ze PTDI MISO 2 2 E 2 Room Bl PTD2 MOSI PTBI ADI m PTD3 SPSCK PTBU ADO R36 10K B4B XH A Vss PTD7 T2CHI 23 A Vdd PTD6 T2CHO 5 PTDATICH PTDS TICHI 45 E R24 10K RIS 10K BM2 06103 R7 10K R16 5 6K nn Lu DLI Re 10K pm E IC3 MAX487 CD110 4 7uf 50V GN
13. HPU 42CV03 HPU 42HV03 2 Automatic run 1 Cooling heating type After the machine being started and running mode changes to AUTO the system will decide running mode according to difference between the present room temperature and setting temperature then runs as the decided mode In the following selections Tr means room temperature and Ts means setting temperature Select running mode according to the following conditions at the first time to enter Auto mode Tr Ts 3 C to select cooling mode with setting temperature being Ts 3 Tr lt Ts 3 C to select heating mode with setting temperature being Ts After the system entering auto run mode the running mode can convert automatically according to variation of room temperature between cooling and heating If the unit is in cooling mode when the temperature arrives stop value the compressor stops the system will measure the temperature after compressor stops for 3 minutes At this time if Tr lt Ts 3 C the unit will enter heating mode or it will still be cooling mode If the unit is in heating mode when the temperature arrives stop value the compressor stops the system will measure the temperature after compressor stops for 3 minutes At this time if Tr lt Ts 3 C the unit will enter cooling mode or it will still be heating mode If the unit is in heating mode when indoor heat exchanger temperature is over 63 C the unit will turn into cooling mode automatically in 1 hour the i
14. Indoor Outdoor Meter separator S Completely TI Flare RD Vacuum pump Outdoor units way valve totally closed Liquid side e It shall use the vacuum pump of lower than 755mmHg high vacuum degree and large air discharging over 40l min e The vacuumizing time depends on the length of the connecting pipe generally is 1 2 hours When vacuumizing it shall be confirmed both gas and liquid side valves are closed f after 2 hours vacuumizing it cannot reach the vacuum degree below 755mmHg it can be vacuumized for other 1 hour f after 3 hours vacuumizing it still cannot reach the vacuum degree below 755mmHg check if there is any leaking point and repair the lef Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 f after over 2 hours vacuumizing the vacuum degree is below 755mmHg close the VL and VH on the meter separator and stop vacuumizing 1 hour later to confirm if the vacuum degree changes If changes it indicates there is leaking point in the system Check the leaking point and repair e After finishing the above vacuumizing change the vacuum pump into refrigerant pump to charge the refrigerant Charging amount of refrigerant When the total length L of the two indoor units connecting pipe is less than 5m it is unnecessary to charge additional refrigerant If the connecting pipe L exceeds 5m it shall charge Mg additional ref
15. CUm T En 1 J us 27 M KFR 120LW K cna m Ux c oe n UB551005 eran Fu 75 Port Function 1 Fuse T3 15A 250VAC 2 CN2 Central controller B2B XH R 3 CN3 Live wire L 250 4 CN4 Neutral wire N 250 5 CN5 Primary side of transformer RTB 1 5 2P 6 CN6 Second side of transformer B3B XH A 7 CN7 Sensor B4B XH A 8 CN10 Operation panel B4B XH A 9 CN11 Low speed of fan motor 250 10 CN12 Middle speed of fan motor 250 11 CN13 High speed of fan motor 250 12 CN19 Negative ion generator L 187 13 CN20 Negative ion generator N 187 14 CN22 Neutral wireof fan motor 250 15 CN23 Electrical heater L 250 16 CN24 Electrical heater N 250 17 CN25 Communication between indoor and outdoor units 187 59 Haier Commercial Air Conditioner For outdoor unit of HPU 42CV03 7812 3e E3 NER Ie C3 al ech E en S ALS cat pen 4 cs n Dii d R53 JHEAT rss i 5 T EIS m R11R10 g Rz an we PL Sti er ms 2 2 UR S Ee Psp
16. Number 8 timer timing setting state and in setting state Da TON NN INC NE ah M es 9 the timing information can be adjusted S 8888 BEBE aen 14 SET2ON OFF 16 Min D Confirm 10 2 No 8 timing group number when it is not 1 2 3 4 5 6 7 rf 15 j MON TUE WED THU FRI SAT SUN ee en 17 set timing there is timing group number 5 o 11 after setting timing it will automatically form 6 no 8888 EBH 13 a group number according to each kindof ni 777777700 12 setting combination so that in the sequent ON OFF o z timing setting it can execute instant setting i by using timing group number 3 Setting state and holiday functional area 1 MON 2 TUE 3 WED 4 THU 5 FRI 6 SAT 7 SUN are used to indicate the 7 days in a week the symbol of this part will display after powered on after set the corresponding weekday s timing function the ON symbol under the corresponding symbol will display if not set timing there will be no display if not set Holiday function the OFF symbol on the upside of the indicating symbol will not display after set Holiday function the OFF will display and at the same time temporarily the previous timing setting and turn off the air conditioner 4 No 1 group and No 2 group timing setting display area when entering timing setting state the contents of timing will flash choose Date Hour and Minute to p
17. ON 29 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 6 Time confirming for TIMER OFF After time setting press SET button to confirm stops flashing Time displayed Unit start or stop at x hour x min To cancel TIMER mode Just press TIMER button several times until TIMER mode disappears According to the Time setting sequence of TIMER ON or TIMER OFF either ON OFF or OFF ON can be achieved Health amp Fresh Air operation Health operation After turning on the unit and set the desired working mode Press the Health button the LCD will display 47 the unit begins health operation start the negative ion generation device Press the Health button again the 27 displayed on the LCD disappears health operation is cancelled turn off the negative ion generation device Note When indoor fan motor does not work the unit will automatically turn off negative ion generation device About Health operation After the start of Health operation the negative ion generator will generate large amount of negative ion which can effectively balance the amount of positive amp negative ion in the air and has the bacteria killing and accelerating the dust deposition of the room to make the room air fresh and healthy Auto restart function Setting method to be applied for a necessary situation Setting Method When the remote controller is on excluding timer mode and fan mode press
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19. g R22 3400 a Gas mm 919 05 a Connecting Method Flared MAX Drop m 30 TD MAX Piping length m 50 Norminal condition indoor temperature cooling 27 C DB 19 CWB indoor temperature heating 20 CDB Outdoor temperature cooling 35 C DB 24 C WB outdoor temperature heating 7 CDB 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 H a Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Installation state the unit should be placed on the flat floor or be mounted in horizontal direction Testing method standing on floor unit If the unit cooling capacity is over 28000W the noise level should be measured at the front left right directions respectively 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 1 2 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 3 Safety precaution of indoor and outdoor Carefully read the following informatio
20. operation display GO HEAT Select Auxiliary electric heater Control the light up and go out of the control panel s background light source and control the switch of the buzzer Note All the above functions will be a little different for the specific models Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Operation instructions Clock set When unit is started for the first time and after replacing batteries in remote controller clock should be adjusted as follows Press CLOCK button AM or PM flashes Press A or w to set correct time Each press will increase or decrease 1 min If the button is kept pressed time will change quickly After time setting is confirmed press SET and stop flashing while clock starts working Remote controller s operation When in use put the signal transmission head directly to the receiver hole on the indoor unit distance between the signal transmission head and the receiver hole should be within 7m without any obsacles as well Don t throw the controller prevent it from being damaged When electronic started type fluorescent lamp or change over type fluorescent lamp or wireless telephone is installed in the room the receiver is apt to be disturbed in receiving the signal so the distance to the indoor unit should be shorter Loading of the battery Slightly press w and push down the cover Load
21. 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 1 5 2 Steady cabinet indoor unit Powerfull running amp long distance air sending The unit can run powerfully and supply large volume of cooled air to the room Long distance and large angle air sending ensures average temperature distribution bring you much more comfortable indoor environment in the shortest time Newly designed display panel more simple On the display panel there are power operation timer and electric heating indicator from which you can find the operation state directly and the indicator flash times can show the failure Malfunction Auto checking Failure codes displayed by LED or controllers are so detailed for us to find the fail place more quickly and can judge the failure content easily Powerfull Soft function Special button on remoto controller is used to set powerful working or soft working Single fan outdoor more compact Central control function if connected with a detector and a central controller Haier 2 SPECIFICATION Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03
22. the SLEEP button on the remote controller 10 times within 5 seconds and after the buzzer rings 4 times the air conditioner will enter the state of auto restart Cancel Method Press the SLEEP button on the remote controller 10 times within 5 seconds and after the buzzer rings 2 timer the auto restart mode will be cancelled Notes When a power failure suddenly occurs during the air conditioner is working after the power failure compensation is set if the air conditioner will not be used for a long time please cut off the power supply to prevent its operation from being resumed after the power is supplied again or press the Switch On Off button after the power comes again After the power failure compensation is set if power failure suddenly occurs while the air conditioner is working it will resume the previous working state when the power is supplied again If the unit has not the SLEEP button or function please realize the function by pressing SWING with the same method 30 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Weekly timer YCS A001 II 2 poi ee eden 1 PROGRAM uo D Instruction ORE ORE OFF p SR OFF OFF 7 1 PROGRAM the display shows the weekly 3 ON ON ON ov ow Program Holiday
23. timing function applicable for the units except for the unit which needs detector to realize the weekly timer function such as cabinet type console type 5 G 4 2 Use weekly timer to realize weekly timing function applicable for the units which need detector to realize the weekly timer function such as cabinet type console type The detector is connected with one air conditioner by the 4 core screw fixed terminals A and A of air conditioner interface then accordingly set the dial code switch of the detector in single unit working mode the address number setting shall be performed according the planned program for specific setting and corresponding address please refer to the dial code switch setting in detector s operation manual use weekly timer to fulfill weekly timing function the system needs to be connected with weekly timer each detector and weekly timer is connected with shielded twisted pair communication bus by the 2 core screw fixed terminals A and B of its RS 485 interface the communication bus must be shielded and grounded and the resistors in its two ends shall be suited
24. will increase or decrease quickly Press FAN For each press operation mode changes as follows During Auto run operation temp setting will be shown in LCD display unit will select heating controller LOW MID HIGH AUTO Unit runs at the speed displayed on LCD cooling or fan operation according to the room When fan speed is AUTO it is changed automatically according to the indoor temperature 5 Press ON OFF button Unit stops running temp Cooling Mode 0 Press ON OFF button Unit starts running The previous status appears on the display except TIMER SLEEP mode Press MODE button For each press operation mode changes as follows vU gt gt A gt Remote V t controller AUTO COOL DRY FAN HEAT Select cooling operation Shows Cooling operation starts 8 Select temp button Press TEMP button A Every time the button is pressed temp setting increases 1 C wv Every time the button is pressed temp setting decreases 1 C If the button is kept pressed setting will increase or decrease quickly 0 Press FAN button For each press fan speed changes as follows Remote 9 aal alll controter LOW HIGH AUTO Unit runs at the speed displayed on LCD When fan speed is AUTO it is changed outomatically according to the indoor temperature Press ON OFF button Unit stops running and when entry this mode for the next time it will show the previous
25. 2CV03 Outdoor unit Exchanger Low Pressure Switch compressor Indoor unit 3 way stop valvel Gas pipe Dld Exchanger Separator High Pressure Switch Temperature sensor 2 way stop valve Liquide pipe Discharge temperature ea Dld 39 HPU 42CV03 HPU 42HV03 Commercial Air Conditioner Model aler 8 2 HPU 42HV03 Outdoor unit Indoor unit 3 way stop valvel Gas pipe gt Exchanger Four way valve Temperature sensor 2 way stop valve Lam Discharge temperature Liquide pipe High Pressure Switch Separator Exchanger H Low Pressure Switch compressor Temperature sensor e pj 40 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 9 Electrical Control Functions For indoor unit 1 Indoor AUTO FAN control During cooling program If the unit enters AUTO FAN for the first time when Tr gt Ts 2 select high speed when Tr lt Ts select low speed or it will select med speed If the present fan speed is AUTO HIGH when Tr lt Ts 2 fan speed will change
26. 82 62K3W R7 14007 10K 4M HR83 R8 ES 62K 3W K D3 1K CA 103 PUT 1N4007 i RIS 10K 0 5W 5 R16 1 DE 250 144007 10K 0 5W FUSE e WORT EE 1 LX102 T3 15A 250V 7812 3 Vout Vin cua 1 E RV E 1 C24 514 350 N C31 1 5 2 104 B3B XH WWW gt 1 0 100275 0 100275 470UF 25V 2200UF 35V AND Evo EVMODIP AU42NAIBEA 0010452441 pU20 12205 Haier 11 3 Printed diagram For indoor unit OXYGEN 9 SWING CN20 CNL a N CN21 CNI2 m D Commercial Air Conditioner Model HPU 42CV03 Ou EL CN22 04 03 020 2 TRANS II HPU 42HV03 7805 OO 0123 4567 am WIS EN Wee i 0010452322 o o bre zl CE E 0010452169 Bs UIOEFON 5 ME 8 T3 15A 250VAC L cios R42 E E7 i se Gm B
27. Conditioner Model HPU 42CV03 HPU 42HV03 Setting temperture Ts 2 Ts 1 Ts gt SLEEP time 1 2 8 In heating mode after running at SLEEP mode for 1 hour the set temperature reduces 2 C another 1 hour later the set temperature will reduce 2 C and another 3 hours later the set temperature rises 1 C the unit continues running for 3 hours then the unit will stop Setting temperture Ts Ts 2 Ts 3 15 4 SLEEP time 1 2 5 8 8 Compulsory cooling operation After the panel receives the compulsory cooling signal the unit enters the compulsory cooling state and indoor outdoor motors are in high speed in the 5 minutes the system will not adjust the protection and not be limited by the ambient temperature but the compressor will be limited by 3 minute protection 5 minutes later the unit will enter the normal cooling state 9 System protection 9 4 3 minute protection for compressor startup After the compressor stops at least 3 minutes later the compressor can restart up if the unit is powered off in running less than 3 minutes after being electrified 3 minutes later the compressor can restart up Being electrifed for the first time there is no 3 minute delay protection 9 2 Sensor failure protection 9 3 Communication failure protection 10 Panel selection Select the panel according to the 2 dip switch Style of panel 1 2 Cabinet V panel OFF ON Cabinet Z panel ON OFF Wired contr
28. D DI B2B XH R A DE OK mA R29 IK R27 10K XT H H BAB XH A 8A1206 UL d 2 CHECK 103 EU Ee VE KFR I20LW E 0010452322 PUE Ul 20 11 2C For indoor unit HPU 42CV03 Model Commercial Air Conditioner HPU 42HV03 42 03 VHB2B BI CN2 VHB2B CNIO IC6 5 521 152521 IC5 SDA SCL WP VCC GND LZ 7 Ai 2 0 24C01A a IC4 TMP86P807N VR 470UF 16V VSS CLK XIN XOUT VPP TEST VCC VDD XTIN P21 RESET 6 5 20 TXD P00 TXD POI SCLK P02 MOSI P03 MISO P04 P37 AINS STOPS P36 AINA STOPA P35 AIN3 STOP3 P34 AIN2 STOP P33 AINI P32 AINO XTOUT P22 P31 TC4 PDO4 PWMA PPG4 P30 TC3 PDO3 PWM3 P12 DVO PLI INT1 PIO INTO PO7 TC1 INT4 POG INT3 PPG POS SS 4 70 16 892 1 aAI OTASE PGWD B2B XH CNII 1 2 Sieg AZEoL AGE YITQ 2B XH 892 1AC C d aler AND gl Vo ETA
29. Haier Commercial Air Conditioning SERVICE MANUAL WE Model HPU 42CV03 HPU 42HV03 Features Long distribution pipe and high drop The outdoor can match with multiple types indoor unit of the same capacity The indoor unit is identical for heat pump and cooling only unit Infra red remote controller Central control and full automation if connected with a central controller Optional safety devices and much more precision control device Auto restart function Manual code SYJS 016 06REV 0 Edition 2006 06 12 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 CONTENTS EET 1 1 Description of products A features 2 ere e DEE 4 Safety Drecauton 7 4 Net dimension of indoor and outdoor 9 5 Installation instructions aaannnnannnnnnnnnnnnnnnnnnnnnn 10 6 Parts and 21 7 Infrared controller 22 8 Refrigerant dagram 39 9 Electrical control funchons 41 10 Diagnostic information trouble shooting 47 eenander d Dac na n ed 53 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 1 DESCRIPTION OF PRODUCTS amp FEATURES 1 1 Products code explanation H P U 42 C V 03 supply type 03 stands for 200 220V 50Hz Design sequence coo
30. Infrared controller functions Remote controller YR H49 mar ON a PMID MOOG PE GO OO ee ODPower ON OFF Used for unit start and stop MODE Used to select AUTO run COOL DRY HEAT and FAN operation 3CLOCK Used to set correct time 4 TIMER Used to select TIMER ON TIMER OFF TIMER ON OFF GLOCK Used to lock buttons and LCD display 6 RESET Used to reset the controller back to normal condition HOUR Used to set clock and timer setting SLEEP Used to select sleep mode SET Used to confirm Timer and Clock setting LIGHT HPU 42HV03 HEALTH Used to set Health operation function 2 FAN Used to select fan speed AUTO LOW FAN MED FAN HIGH FAN SWING Used to set UP DOWN air sending and RIGHT LEFT air sending direction 3 TEMP Used to set temp temp range 16 C 30 C 5 Timer ON OFF display 09 Fan speed and air sending direction display a4 ad LOW MID HIGH AUTO Swing direction display i Room temperature display 9Sleep state display Health display Display when set Health operation function pElectric Heating display GJ Fresh Air state display 63 Battery Capacity display Display when the electric power of the battery is insufficient Lock state display Temperature display Used to display the set temperature and room temperature G Clock display Humidifying display Power Soft
31. J R19R18 58 2 ge LR ue EX LC Leen bie R24 4 Sec RB E ie Al 019 vu CNS R43 2 kK R23 p iu SS em H m R41 R59 R60 ae im EE SU m gt Js 2 y SS il K3 2 5 1 2 we 1 6 4 F 4 y Di d De A kek 12 524 016 FUSE T3 15A 250VAC 5 ps ry 0010452378 X O ud C23 5 KFR 120LW K T J No Port Function 1 L1 3 phase L1 250 2 L2 3 phase L1 250 3 L3 3 phase L1 250 4 N Neutral wire of three phase N 250 5 S Communication between indoor and outdoor units 250 6 CN1 Second side of transformer B3B XH 7 CN2 High pressure switch B2B VH 8 CN4 Primary side of transformer RTB 1 5 2P 9 CN7 Control port for AC contactor B2P3 VH 10 CN8 Connection port of outdoor device B3B XH 11 CN9 Outdoor fan motor B3P5 VH 12 CN10 Low pressure switch B2B VH 13 CN11 Discharging sensor B2B XH 14 Fuse T3 15A 250VAC 15 SW1 Dip switch 60 Model HPU 42CV03 HPU 42HV03 Commercial Air Conditioner Model HPU 42CV03 Haier ai r conan d For outdoor unit of HPU 42HV03 HPU 42HV03
32. ND on mode Oil type 3GS Type S SOS Protectiontyps erthemalpoedon E Starting method hard startup Art 4 Fan motor output power w 906 5 Type Diameter mm 7 imergroved ogp52 eenst i Dimension External LxWxH mmxmmxmm 948 340 1250 1090741071350 Drainage pipe material 1070 0 Emm ee Refrigerant control method mm mm Capillary tube Volume of Accumulator Nosse Type of Four way valve Weight Net Shipping 9 R22 3400 a Gas mm 19 05 MAX Drop m 30 The noise level will be measured the third octave band limited values using Real Time Analyser calibrated sound intensity meter It is a sound pressure noise level Haier Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 item Model HPU 42HV03 Function heating Capacity Lo TU 400 44000 Capacity Po 12 0 13 0 Sensible heat ratio EE En e EEE Total power input 4000 Max powermt 4900 Pw 34 3 25 Dehumidifying capacity Do Senge 5 0 Signal cable section AGx0 75mm Connecting cabe _ section Wired control cable forwiredcontrolunt section Power source TN Hz 3N 380 400V 50HZ Runn
33. condition causes to user no replace PCB 52 H lef Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 11 Electric data 11 1 Wiring diagram CIRCUIT DIAGRAM OF INDOOR UNIT TRANSFORMER 4 m Mus CN24 4 CN5 CN6 z R ROOM TEMP SENSOR HD E c FUSE 7 Sie SC PIPING TEMP SENSOR 5 CN23 BM1 BM2 BM3 BM4 CONTROL B CN22 CN12 OH 2 CN10 a i A A SWING MOTOR SWING MOTOR REMOTE CONTROLLER FAN MOTOR B BLACK R RED NOTE 1 REMOTE CONTROLLER IS OPTIONAL ne 2 REFER TO OPERATION INDOOR MANUL TO SET DIP BM1 BM4 PLEASE DO NOT CHANGE THE DIP SWITCH RANDOM Meer 3 NO ELECTRIC HEATING TYPE WITHOUT ELECTRIC HEATER 120 H CIRCUIT DIAGRAM OF OUTDOOR UNIT 0010573510 7 05 3 01 RANS 8 COM NO NC HIGH PRESSURE SWITCH Cu 6 4 BL B R B
34. ction the m of the corresponding unit number flashes at the same time Display of CENT REM Display of room temperature Display of time setting Display of self check code Used to select unit on off ON OFF key LOCK key This key can be used to lock the MODE key keys and LCD display Used to select running mode TEMP TIME avkeys Used to set a desired room temperature clock and time FAN SPEED key EER To select the fan speed CENTRAL REMOTE key To select central or remote control method CONFIRM key Used to confirm the function settings and send to the air conditioner corresponding to the selected unit number TIMER key To select timer mode TIMER ON TIMER OFF blank CLOCK key Used to unitarily set the clock Note In MONI mode pressing SEL MODE FAN SPEED TEMP TIME keys may change the MONI mode into SET mode If SET key or other keys hasn t been pressed within 10s it will automatically return to MONI mode iH a le Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 1 Communication function Communicate with the indoor PCB in the group control network To co
35. e wall must be decided as per installation place and pipe direction Please refer to the installation drawings 2 Making the wall hole Drill a hole of 120 70mm with a little slope to the exterior through the wall as follows Wall hole Thickness of wall Cross section of wall hole H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Installation Space Installation where the area with strong winds Install the unit so that the air outlet section of the unit must NOT be faced toward wind direction 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 should be fixed securely to resist earthquake or storms Use rubber pad during installation against unit vibration over 30cm over 10cm i over 10cm over 15cm over 60cm Installation dimension of outdoor unit mm Refrigerant piping Outline piping Flare connection 3 way stop valve Gas pipe LLL Indoor DK Outdoor unit unit gt DK Liquid pipe 2 way stop valve Piping size Liquid pipe 9 52x0 8mm Gas pipe 6 15 88x1 0mm 905 e Connect the flare nuts to the pipes and then flare the pipes f Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Precautions for refrigerant piping Do not twist or crush piping Be
36. emote Ws bG controller AUTO COOL DRY FAN HEAT Select Fan operation shows Fan operation starts Press FAN button For each press fan speed changes as follows afl il lll LOW MID HIGH Unit runs at the speed displayed on LCD 25 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Press ON OFF button Unit stops running and when entering this mode for the next time it will show the previous setting Note In this mode temp can t be selected temp setting will not be shown LCD display In Fan operation mode AUTO fan speed is not available Operation cycles are as follows LOW MID HIGH Heating Mode Note For cooling only type this function is invalid 0 Press ON OFF button Unit starts running The previous status appears on the display except TIMER SLEEP mode Press MODE button For each press operation mode changes as follows AUTO COOL DRY FAN Select Heating operation z amp appears and Heating operation starts Select temp button Press TEMP button A Every time the button is pressed temp setting increases 1 W Every time the button is pressed temp setting decreases 1 If the button is kept pressed setting will increase or decrease quickly Press FAN button For each press fan speed changes as follows TI tll LOW MID HIGH AUTO In heat mode wa
37. en Tr gt Ts change to Area B If the system is in Area B when Tr gt Ts 3 change to Area A When Tr lt Ts 1 change to Area C 3 amp Area A 8 Ts 3 Ts 1 Area B 3 Ts 1 gt o Anti freezed protection When the unit has run for over 6 minutes after compressor starts up if indoor coil temperature Tg lt 1 C last 1 minute the compressor and the outdoor motor will stop 9 minutes later after compressor stops and when indoor coil temperature rises to 10 the compressor and the outdoor motor will run again 5 Fan mode control Compressor and outdoor motor stop working indoor motor can set High Med and Low speed the fan blade can swing or be fixed on a position In this mode you can set TIMER function but there is no SLEEP function Also you can set high voltage dirt collecting or fresh air function 6 HEAT mode control in the following selections Tr means room temperature and Ts means setting temperature 4 way valve control When entering heating mode for the first time compressor starts up 4 way valve will be on 3 minutes later in heating mode 4 way valve will not be off If the unit changes from heating to other modes 4 way valve will be off immediately compressor control the compressor and outdoor fan motor will depends on the temperature difference between the room temperature and the set temperature Tr Ts 1 compressor stops Tr lt Ts 1 compressor run
38. eplace sensor yes Is sensor resistance acceptable yes Is DC voltage between both ends of sensor near 5V or OV no Replace Replace sensor 3 EEPROM failure start Is EEPROM in mainboard no inversely connected or in poor contact re set no replace EEPROM replace PCB Power on again to check if failure is eliminated 49 Model HPU 42CV03 HPU 42HV03 Haier Commercial Air Conditioner 4 Communication error between indoor and outdoor units Model HPU 42CV03 according to the Confirm commumication failure fault code list Confirm the fault indicator is communication failure yes indicator flash Does indoor communication yes check the other reasons no Is communication wire too close to power cable which causes interference yes 5 should not share a multicore cable with L and N 5 Phase loss or phase failure confirm the malfunction according to the fault code list Check if the phase detecting circuit is correct according to ourdoor wiring diagram yes no Are communication wire Q connected contrarily and supply wires L and N properly connected yes if communication wire is br
39. erform increase and decrease adjustment by the adjusting key 5 Time display area including display the weekday hour and minute before setting timing function please calibrate the current clock 6 Unit number trouble code display area when the air conditioner in the control network has trouble the corresponding unit number and the trouble code will display in this area 7 Program Enter or exit the timing setting in normal condition 8 Holiday Close the units and invalid for timing in no affect on the timing setting condition 9 Number Group setting and timing setting take one day as a standard unit 10 Hour Timing setting condition and time setting condition select the adjustment 11 Min Timing setting condition and time setting condition select the adjustment 12 Time Enter and exit the at present date and time condition in normal condition 13 Week Timing setting condition and time setting condition select the adjustment 14 Timing setting condition and time setting condition increase the setting parameters 15 Timing setting condition and time setting condition decrease the setting parameters 16 Cancel Cancel the present setting before confirm the parameter 17 Confirm Confirm the parameter 18 ON OFF Open close the unit 31 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Connecting method 1 Use group controller and weekly timer to realize the group control function weekly
40. hem With the unit set up vertically fix the anti fall plate to the unit with screws while making an adjustment at the long portion of the hole so that there is no clearance between the upper surface and the anti fall plate e A Installation of L shaped metal Fix to the unit with screws so that there is no clearance between the anti fall plate and the unit After confirming that the unit has been set up vertically to the floor fix it to the floor with bolt Piping connection 1 Connecting method Apply refrigerant oil at half union and flare nut To bend a pipe give the roundness as large as possible not to crash the pipe When connecting pipe hold the pipe centre to centre then screw nut on by hand refer to Fig Be careful not to let sundries such as sands enter the pipe Forced fastening without centering may damage the threads and cause a gas leakage Liquid pipe 9 52mm 3 8 29 4N m Gas pipe 19 05mm 3 4 117 7N m 2 Piping connection of indoor unit Arrangement of piping and drainage pipe After opening inlet grill you will see a control box as shown in the Fig Remove the cover before wiring work 17 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Cut away with a hammer or a saw the lid for piping according to piping direction Insulation material Drain hose Connecting electric cable for indoor and outdoor unit Copper tube According to
41. ing Max Running current Cooling 6 9A 7 8A Heating 7 0 8 3 Class of anti electric shock CLASS CLASS Max operating pressure of heat side Mpa 2 8 2 8 Unit model color HPU 42HVO3 WHITE Fan Speed H M L r min 430 405 370 Fan motor output power kW 0 09 Air flow H M L m h 1750 Type Diameter mm inner grooved p7 Heatexchanger Toalea e 045 t 5 mmemmemm 1850 600 250 8 maar 1980 660 420 Wsedngage Drainage pipe material I D O D mm Control type Remote wired model Remote Fresh air hole dimension mm Outlet distribution hole dimension KW Noise level H M L dB A 51 Weight Net Shipping kg kg 59 70 Dimension Weight Net Shipping kg kg Unit model color HPU 42HVO3 WHITE Model Manufactue VR54KS TFP 542 COPELAND imo Oil type 3GS Type 1 SCROLL Protection type Inner thermal protection Starting method hard startup Speed 840 KW 0 06 5 ype Diameter mm inner grooved q9 52 S Heatexchanger Row Finpth 216 scope mmxmmaxmm 948 340 1250 Package LxWxH mmxmmxmm 1090 410 1350 Drainage pipe material 100D mm Refrigerant controlmethod mmm Capillary tube Defrosting Automatic Volume of Accumulator L Nosse 59 Type of Four way valve material of reduce noise Weight Net Shipping kg kg 106 111 P Type Charge
42. ling H heating ooling capacity 42 42000BTU h U single split unit Product type stands for cassette type stands for convertible type D stands for duct S stands for split type P stands for cabinet system E stands for ceiling concealed type Haier Brand Air Conditioner 1 2 Brief Introduction for T1 T2 T3 working condition Climate type Type of Air T1 T2 T Conditioner i Cooling Only 18 C 43 C 10 C 35 C 21 C 52 C Heat pump 7 C 43 C C 35 C 7 C 52 C Electricity Heating 43 C 35 52 C 1 3 Operating Range of Air Conditioners Temp Mode Rated Maximum Minimum Indoor DB C 27 32 15 Cooling WB C 19 23 14 Outdoor DB C 35 43 5 WB C 24 26 6 Indoor DB C 20 27 10 Heating WB 14 5 Outdoor DB C 7 23 10 WB C 6 18 SC a H a Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 1 5 Product features 1 5 1 Outdoor unit 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 precision 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
43. mmunicate with the indoor PCB through the R S 485 bus A B The central controller sends commands to and receives response from indoor PCB communication by address enables sending and receiving control information work information and fault information between indoor PCB and the central controller 2 LCD display function The LCD could display the fundamental status of air conditioning units are the units existing On off Fault Are units group selected Cursor and the current unit no The LCD can display the working status of the air conditioning unit with the current number mode fan speed temperature setting room temperature timer error code central remote control status The working status of the central controller monitor set status panel locking status signaling status 3 Key input function The keys for moving the current unit number cursor and for group selection A V gt 4 SELECT The keys for setting working status of the air conditioning unit and control conditions ON OFF MODE FAN SPEED TEMP TIME 4 CLOCK TIMER CENT REM SET The key for locking key function of the central controller LOCK 4 Unit number setting function To enrich the control functions of Haier commercial air conditioner remote monitoring system multiple controllers could be set to work together for a combination of multiple functions For this the central controller is provided with a two digital switch for setting controller addre
44. mpressor running Ts 1 eonpe due m Ts 1 Compressor stop esu duet Anti freezed protection When the unit has run for over 6 minutes after compressor starts up if indoor coil temperature Tg 1 C last 1 minute the compressor and the outdoor motor will stop 9 minutes later after compressor stops and when indoor coil temperature rises to 10 C the compressor and the outdoor motor will run again Current peak value protection Controlled by outdoor unit 4 DRY mode control in the following selections Tr means room temperature and Ts means setting temperature When the uint enters DRY mode for the first time the compressor outdoor motor and indoor motor will perform according to the below conditions Tr Ts 2 the compressor and the outdoor motor will run continuously indoor motor will run at the set speed this area is defined as Area A Ts lt TrS lt Ts 2 C 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 is defined as Area B Tr lt Ts the compressor and the outdoor motor will stop indoor motor will run at Low speed this area is defined as Area C After the unit is running in DRY mode the system will change over among Area A Area B and Area C If the system is in Area A when Tr lt Ts 2 change to Area B If the 43 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 system is in Area wh
45. n 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 e 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 hazard 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 H Commercial Air Co
46. nd weekly timer is connected with shielded twisted pair communication bus by the 2 core screw fixed terminals A and B of its RS 485 interface the communication bus must be shielded and grounded and the resistors in its two ends shall be suited 32 Le el H lef Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 OS a p E L3 gea gs 1 88 See S 9 o m e ee B Er RS 485 B A 12VDC zu Gelee PROGRAM No 8 85 13 4 5 6 7 MON TUE WED THU FRI SAT SUN Program Holiday Number wi UU C 8888 BER Har Canal 2 OFF age Min Confirm C
47. nditioner Model HPU 42CV03 HPU 42HV03 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 e 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 e 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 Only use correctly typed fuse May not use wire or any other materials e When conditioner is deinstalled or replacing fuse other wise may cause reinstalleddealer should be responsible 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 efficient discharge Incorrect pipe use may cau
48. ndoor heat exchanger temperature will not be limited and heating operation will stop temporarily 1 hour later the system will adjust the working mode due to the above conditions If the unit is in heating mode for the first time compressor motor will start up within 8 minutes the system will not measure indoor ambient temperature the remote controller will be off low 5 S Ts 3 C low 72 ventilation 4 p gt 3 s 3C Ts 3 C 5 TA high 2 Single Cooling type Select running mode according to the following conditions at the first time to enter Auto mode Tr Ts 3 C to select cooling mode Tr lt Ts 3 C to select blowing mode After entering Auto mode the operation mode can be changed between cooling mode and fan mode according to indoor ambient temperature if the unit now is in cooling mode when Tr lt Ts 3 the mode will be changed to Fan if the unit is in Fan mode when 42 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Tr Ts 3 the mode will be changed to cooling mode 3 cool 2 Ts 3 C 8 4 cool T ventilation esu dua pes C ventilation 3 COOL mode control 4 way valve being powered off compressor run stop will depends on the temperature difference between the room temperature and the set temperature Tr Ts 1 compressor will run Tr lt Ts 1 compressor will stop Ts 1 lt Tr lt Ts 1 compressor will stay in original state Co
49. ning Ts 1 lt Tr lt Ts 1 compressor retains original state 3 8 a Compressor stop Ts 1 Ts 1 Compressor running es Outdoor motor and the compressor runs or stops simultaneously except for overheat protection indoor fan speed can be set at High Med Low or Auto speed and 44 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 the fan blade can swing or be fixed on one position You can set TIMER or SLEEP mode Overheat protection In heating mode compressor has started up and indoor motor has run for over 30 seconds if indoor coil temperature Tg gt 56 C outdoor motor will chenge to LOW if Tg lt 52 and outdoor motor has stop for 45s outdoor motor will run again if indoor coil temperature Tg gt 60 C outdoor motor will stop if Tg lt 56 C and outdoor motor has stop for 45s outdoor motor will run again if Tg gt 68 C the compressor will stop and indoor motor will run according to the thermostat OFF state After the compressor stops for 9 minutes and Tg reduces to 48 C the unit will resume to heating mode and the compressor and the outdoor motor will run again Anti cold air function in heating mode When the uint enters heating mode for the first time or last defrosting is over if Tg lt 28 C indoor motor will stop if 38 C gt Tg 28 C indoor motor will run at low speed if Tg 38 or the compressor has run for over 4 minutes indoor motor will run at the se
50. nt Loose terminal screw and insert cable end fully into terminal block then tighten it Pull the cable gently to make sure it is tight Replace cover after wiring NOx HPU 42CV03 HPU 42HV03 POWER SUPPLY 3N 380 400V 50Hz Note When connecting indoor and outdoor wire check the number on indoor and outdoor terminal blocks Terminals of same number and same color shall be connected by the same wire e Incorrect wiring may damage air conditioner s controller or cause operation failure Haier Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Indoor amp outdoor unit connection pipe direction C Ne Rear Right Bottom 20 Haier 6 Parts and Functions Haier Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 a 88 Indoor unit 4 Outlet grill 2 Operation panel Inlet grill Outdoor unit 1 Inlet grill 2 Outlet grill 4 Air filter inside the unit Remote controller 21 ie Commercial Air Conditioner Model HPU 42CV03 7
51. oken no HPU 42HV03 HO re wiring yes Es re wiring check if indoor outdoor PCB fuse and transformer are normal change defective parts no yes replace indoor if failure is eliminated no wiring if the failure disappear after correcting the Is there phase loss or phase failure no no Is fault corrected after sequence of either two of three RST phases is adjusted no replace outdoor PCB adjust power supply no 50 no replace outdoor PCB Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 6 Temperature cutoff protection confirm the malfunction according to the fault code list Y s outdoor four way valve Does small relay coil in good condition during of four way valve have ied heating cycle a voltage of 12V DC yes Does four wa Y no Replace four way valve work valve properly yes Is indoor unit malfunction caused by lack of refrigerant no charge refrigerant yes Is heat exchange effect adversely affected by heavy dust NL cleaning in indoor and outdoor units yes Are indoor sensors for ambient tempera
52. oller ON ON 46 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 10 Diagnostic information troubleshooting 10 1 Failure code 10 1 1 For outdoor units Failure description Fault code Outdoor ambient temp sensor failure flash 3 times Outdoor coil temp sensor failure E4 flash 4 times Fault in discharging temp sensor E4 flash 4 times Phase failure E5 flash 5 times Compressor current protection E5 flash 5 times High pressure abnormal E6 flash 6 times Low pressure malfunction E6 flash 6 times Communication failure E9 flash 9 times 10 1 2 For indoor unit Operation No Fault description panel display 1 Indoor ambient temp sensor failure E1 2 Indoor coil temp sensor failure E2 3 Outdoor ambient temp sensor failure E3 4 Outdoor coil temp sensor failure E4 5 CT current failure E5 6 Pressure protection E6 7 Communication failure between indoor E8 units panel 8 Communication failure between indoor and E9 outdoor PCB 47 a H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 10 2 Troubleshooting 1 Troubleshooting before replacement of PCB Service call Y Fault confirmation For example no cooling etc 1 15 supply voltage acceptable Confirm operating _ 2 15 temperat
53. on Display of whole unit Try to bring the packed unit to the installation place When it is necessary to unpack the unit be careful not to damage the unit Wrap it with nylon etc After unpacking be sure to place the unit with the front side to be up Deli Note When delivering don t hold plastic Facing up parts such as inlet or outlet grill etc ET Fixing of the unit Position of the wall hole Wall hole should be decided according to installtion place and piping direction refer to installation drawings Making a hole Drill a hole of 70mm dia with a little slope towards outside e Install piping hole cover and seal it with putty after installation INDOOR SIDE OUTDOOR SIDE wall hole wall thickness Cross section of wall hole With the unit set up vertically fix the fitting metal to the unit with screws then fix the fitting metal to the wall with cement nail and washer as shown below T Cement nail Fitting metal 2 A0 hol 330 A0 hole Moreover if want to fix the unit more firmly you should fix the bottom panel to the ground with concrete bolts as shown below 260 4 44 hole 30 depth 14 hole 135 ele _ 4 Lit RIS Bottom Panel 16 A a Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Installation of anti fall plate Fix the anti fall plate to the wall with screws so that there is no clearance between t
54. otally closed High pressure gauge Gas side Indoor Outdoor En Meter separator Indoor units Outdoor units Nitrogen tank 2 way valve totally closed Liquid side 13 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 First step 0 3MPa 3 Okg cm g Hale over 3 minutes Second step 1 5Mpa 15 pressurize over 3 minutes Large leakage will be found Third step 3 0 MPa 30kg cm 29 pressurize about 24 hours Little leakage will be found e Check if the pressure drops If the pressure does not drop the unit is passed If the pressure drops please check the leaking point After pressurizing for 24 hours each 1 C difference of ambient temperature will result in 0 01MPa 0 1kg cm g pressure change It shall be corrected during test e Checking the leaking point From the first to third steps if the pressure drops check the leakage in each joint by the sense of hearing feeling or soap water etc to find the leaking point After confirming the leaking point welding it again or tighten the nut tightly again Piping and indoor unit vacuumizing Use vacuum pump to perform vacuumizing It is strictly forbidden to use the refrigerant to remove the air inside the system e After air tightness test and discharging all the nitrogen connect the vacuum pump as the following figure shown Low pressure gauge 3 way valve totally closed Gas side High pressure gauge
55. ote control unit Before go to bed you can press the Sleep button the air conditioner will operate in comfortable sleep mode to make your sleep more comfortable 27 Haier Usage of the Sleep function After starting set the Run mode and press the Sleep button Run mode 1 In cooling and dry After starting of the Sleep operation the temperature Will be raised for 1 C higher than the set temperature 1 hour later and be raised for 1 C after another hour It continues under that condition for 6 hours then the machine will be switched off The temperature is higher than the set Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 The Sleep running starts The Sleep running stops About 6 hours Close down the machine temperature In cooling and dry temperature so as to avoid catching cold in sleeping 2 In heating the single cooling conditioners do not have the function After the Sleep running starts the temperature will drop for 2 C after another one hour The temperature will raise for 1 C after 3 hours running under the above temperature and the conditioner will be closed down after running for 3 hours The temperature is lower than the set temperature so as to avoid uneasiness in sleeping Set the Close down temperature the machine Drop for 2 C About 3 hourg EE The Sleep running starts In heating The Sleep running stops 3 In automatic running The conditioner will r
56. rigerant per meter That is Refrigerant charging amount L 5 x M g For the unit with liquid pipe 6 35mm M 30 For the unit with liquid pipe 9 52mm M 65 Only in COOLING operation can charge the additional refrigerant e When charging the refrigerant shall be charged from the charging nozzle of low pressure vavle e Be carefull when charging refrigerant do not let the air mix into the system and must charge the additional refrigerant in liquid condition Piping connection of outdoor unit Connect the connecting pipe and inlet and outlet liquid pipe according to the piping method Purging method Discharge the air out of the indoor unit and the refrigerant pipe by vacuumizing 1 Fasten all the nuts of the indoor and outdoor pipes to make these parts out of leakage 2 Under the condition of the complete close 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 Extra charging amount of the refrigerant When piping is longer than 5 m charge additional refrigerant specified in this list Pipe length 25m 30m Refrigerant charge g 1500 1875 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 5 2 Indoor unit installati
57. rm air will blow out after a short period of time due to cold draft prevention function Press ON OFF button Unit stops running and when entering this mode for the next time it will show the previous setting 26 Hi Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Air flow adjustment Swing louvers Vertical louvers Horizontal louvers Up and down Side from side Position 1 Position 1 Position 2 Position 2 Position 3 E AN Position 3 S Position 4 i Position 4 Position 5 COOL DRY FA Position 5 N AUTO COOL pn HAVE NOT Position 6 Position 6 S SNS Position 7 NS Position 8 Fixed position Press the SWING again to fix the vertical louvers at your desired position Side from side Swing C Press SWING C the horizontal louvers move from up to down Swing Fixed position Press SWING the vertical P louvers move from side to side Press the SWING C amp D again to fix the horizontal louvers at your desired position Note Put louvers at up position in cooling and down position in heating mode This will be helpful to keep an even room temp Notice In cooling or dry operation don t put horizontal louvers at downward position for a long time or outlet grill might get frosted Don t expose your skin to cool or warm air for a long time SLEEP Mode Rem
58. se water leaking Earthing Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 4 Net dimension of indoor and outdoor 185 580 185 518 p 30 Et 8 4 M10 380 340 950 Power wiring Terminal 1250 Joel 350 16 Le 1851 336 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 5 Installation Instructions 5 1 Outdoor unit installation Necessary Tools 1 Screwdriver 2 Hacksaw 3 70mm diameter hole drill 4 Spanner dia 17 27mm 5 Spanner dia 14 17 27mm 6 Pipe cutter 7 Flaring tool 8 Knife 9 10 Gas leakage detector or soap water 11 Tape measure 12 Reamer 13 Refrigerant oil Installation Position strong enough to support the unit weight and will not cause vibration and noise Place where discharged air and noise do not cause interference to the neighbors and is sufficiently ventilated Place where is less affected by rain or direct sunlight and sea breeze Place with enough space to ventilation The unit cannot be installed on an unspecified metal frame it shall not be less than 2 5m high from the ground to the unit if installed close to the street Easy for maintenance Fixing of the unit 1 Position of the wall hole The hole through th
59. setting 24 i n Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 Dry Mode D Press ON OFF button Unit starts running The previous status appears on the display except TIMER SLEEP mode Press MODE button For each press operation mode changes as follows Remote V O G controller AUTO COOL DRY FAN HEAT Select Drying operation shows Dry operation starts 3 Select temp button Press TEMP button A Every time the button is pressed temp setting increases 1 C w Every time the button is pressed temp setting decreases 1 If the button is kept pressed setting will increase or decrease quickly Press FAN button For each press fan speed changes as follows Remote si wh e all controller LOW MID HIGH AUTO Unit runs at the speed displayed on LCD In DRY mode when room temp becomes 2 C lower than temp setting unit will run intermittently at LOW speed regardless of FAN setting Press ON OFF butto nunit stops running and when entering this mode for the next time it will show the previous setting Cya Temp setting 2 C Temp setting On reaching 2 C lower than temp setting unitwill run in mild DRY mode Fan Mode Press ON OFF button Unit starts running The previous status appears on the display except TIMER SLEEP mode Press MODE button For each press operation mode changes as follows R
60. ss 5 Realizing central control function with the central controller max 128 indoor units can be connected this type is applicable for the unitary free indoor units except for cabinet type H CN16 indoor ENIG GNIS 1 0 O O 7 CT CT CT CT CT LT 6 Central control system Group control system max 128 x16 indoor units can be connected this type is applicable for the unitary free indoor units except for cabinet type 123 1 2 3 1 2 3 CNS E CNS cl CN5 35 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 7 Use central controller weekly timer to realize the group control function weekly timing function this type is applicable for the unitary free indoor units except for cabinet type
61. sure that no dust is mixed in piping Bend piping with as wide angle as possible Keep insulating both gas and liquid piping Check flare connected area for gas leakage Piping connection e Connecting method indoor unit Apply refrigerant oil at half union as large and flare nut To bend a pipe give the roundness as possible not to crush the pipe When connecting pipe hold the pipe centre to centre then screw nut on by hand refer to Fig Be careful not to let foreign matters such as sands enter the pipe Pipe diameter Fastening torque Liquid pipe 6 35mm 14 2 17 2 Forced fastening without centering Liquid pipe 9 52mm 32 7 39 9N m may damage the threads and cause Gas pipe 12 7mm 49 5 60 3N m a gas leakage Gas pipe 15 88mm 61 8 75 4N m Gas pipe 19 05mm 97 2 118 6N m Air discharging method After finishing connection of refrigerant pipe it shall perform air tightness test e The air tightness test adopts nitrogen tank to give pressure according to the pipe connection mode as the following figure shown The gas and liquid valve are all in close state In order to prevent the nitrogen entering the circulation system of outdoor unit tighten the valve rod before giving pressure both gas and liquid valve rods Low pressure gauge 3 way valve totally closed pressure gauge Gas side Indoor Outdoor TT Outdoor units Nitrogen tank way valve totally closed Liquid side 12
62. t lights up To cancel TIMER mode Just press TIMER button several times until TIMER mode disappears Hints After replacing batteries or a power failure happens Time setting should be reset Remote controller possesses memory function when use TIMER mode next time just Press SET button after mode selecting if timer setting is the same as previous one Timer on off function Remote controller operation TIMER ON OFF 1 After unit start select your desired operation mode Operation mode will be displayed on LCD 2 TIMER mode selection Press TIMER button to change TIMER mode Every time the button is pressed display changes as follows EN El gt BLANK Remote M 12 00 12 00 12 00 12 00 controller TIMER ON TIMER OFF TIMER ON OFF Select your desired TIMER mide TIMER ON or TIMEROFF ON or OFF will flash 3 Timer setting for TIMER ON Press HOUR button A Every time the button is pressed time increases 1 min If button is kept pressed time will change quickly V Every time the button is pressed time decreases 1 min If button is kept pressed time will change quickly Time will be shown on LCD It can be adjusted within 24 hours AM refers to morning and PM to afternoon 4 Time confirming for TIMER ON After time setting press TIMER button to confirm stops blinking while 9 starts blinking 5 Time setting for TIMER OFF Follow the same procedure in Time setting for TIMER
63. t speed Blowing remaining heat function In heating mode the thermostat is OFF the compressor stops indoor motor will run at low speed at least 50 seconds Auxiliary electric heating function Enter condition 1 TrS lt Ts 2 C 2 compressor ON and running for 1 minute 3 Tr lt 23 C 4 Indoor motor running 5 Electric heating function start signal available cancelled If the above conditions can all be met the electric heating function will work If one of the below conditions can be met the electric heater will stop 1 Tr Ts 1 C 2 compressor OFF or indoor motor stops 3 Trz25 C 4 Electric heating function start signal not available cancelled 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 For the unit with auxiliary electric heating function If the auxiliary electric heating function is working when the defrosting condition is met please stop electric heater firstly 3 seconds later defrosting can begin 7 SLEEP function Sleep function can be setted in COOLING DRY and HEATING mode in cooling or dry mode after running at SLEEP mode for 1 hour the set temperature will rise 1 C another 1 hour later the set temperature will rise another 1 C the unit continues running 2 YS wa wa for 6 hours then the unit will stop 45 H Commercial Air
64. the batteries as illustrated 2 R 03 dry batteries cylinder Be sure that the loading is in line with the pole request as illustrated Put on the cover again Confirmation indicator AN In disorderation reload the batteries or load the new batteries after 5 mins Wy Note The waster batteries should be disposed properly use two m new same type batteries when loading If the remote controller canit function normally or doesnt work at all use a sharp pointed item to press the reset key Hint Remove the batteries in case unit won be in usage for a long period If there are any displays after taking out just need to press reset key When throw away the waste batteries please perform in accordance with the local regulation Auto Mode D Press ON OFF button Unit starts running The previous status appears on the display except TIMER SLEEP mode 2 Press MODE button For each press operation mode changes as follows AUTO COOL DRY FAN HEAT Select Auto run A7 appears and auto run starts 23 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 8 Select temp button Press TEMP button A Every time the button is pressed temp setting increases 1 C W Every time the button is pressed temp setting decreases 1 C If the button is kept pressed setting
65. 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 outdoor unit Arrangement of drain hose Drain hose shall be placed in under place e There should be a slope when arrange drain hose Avoid up and down waves in drain hose Indoor unit 2 bye Slope Good Down Bad If humidity is high drain pipe especially in room and indoor unit must be covered with insulation material H Commercial Air Conditioner Model Ee Electric wiring Note Electric wiring must be done by qualified person Use copper wire only the parameter of connecting cable is HO7RN F 4G 0 75mm The power cable should be over 5G2 5mm the power cable is self provided The power supply connects from the outdoor unit Wiring of indoor unit Insert the cable from outside the wall hole where piping already exist Pull it out from front Loosen terminal screws and insert cable end fully into terminal block then tighten it Pull the cable gently to make sure it is tight Replace cover after wiring inal Wiring of outdoor unit bed 5198 Insert the cable from inside the wall hole ay where piping already exists N 7 ER Pull it out from fro
66. to AUTO MED If the present fan speed is AUTO MED when Tr lt Ts fan speed will change to AUTO LOW when Tr gt Ts 3 fan speed will change to AUTO HIGH If the present fan speed is AUTO LOW when Tr gt Ts 1 fan speed will chenge to AUTO MED 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 The sketch map is as follow high lt q _ Set temp 3 C eonparduie high med Set temp 2 C Set temp 1 C Set temp esu duet B During heating program If the unit enters AUTO FAN for the first time when Tr gt Ts 1 select low speed when Tr lt Ts 3 select high speed or it will select med speed If the present fan speed is AUTO LOW when Tr lt Ts 1 fan speed will change to AUTO MED If the present fan speed is AUTO MED when Tr gt Ts fan speed will change to AUTO LOW when Tr lt Ts 3 fan speed will change to AUTO HIGH If the present fan speed is AUTO HIGH when Tr gt Ts 2 fan speed will chenge to AUTO MED Ts means setting temperature on the wired controller 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 The sketch map is as follow low E 2 low 9 Ts 5 1 d a 520 4 3 esu duet gt high high 41 H Commercial Air Conditioner Model
67. ture and coil properly located pes no Relocate Is resistance of indoor no Repl sensor correct sensor yes Replace indoor PCB 51 H Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 7 Pressure protection Confirm the fault according to the fault code list Does system have NO no ae Are CN17 and CN18 Replace PCB pressure switch in PCB cut off yes yes Make them in short circuit Is actual pressure detected by yes Change pressure pressure gage acceptable switch no low pressure failure Eo high pressure failure yes ves Is high pressure too low no fis pipe blocked ves ves Refrigerant charge is dredge piping needed Check if there is refrigerant leak If yes replace pipe 8 Compressor discharging overheat protection Confirm the failure according to the fault code list Is discharging temperature replace discharging sensor sensor in good condition yes Are high pressure and no no Ifthe pipeis YES e low pressure normal EE blocked ce Unclog piping yes Refrigerant charge is needed yes Air conditioner is yes running in bad It is normal protection explain the
68. un under automatically selected working mode of sleeping 4 In Fan running The Sleep function is invalid Timer on off operation Remote control unit TIMER operation Set Clock correctly before starting Timer operation refer to page 2 You can let unit start or stop automatically at following times Before you wake up in the morning or get back from outside or after you fall asleep at night TIMER ON OFF 1 After unit start select your desired operation mode Operation mode will be displayed on LCD 2 TIMER mode selection Press TIMER button to change TIMER mode Every time the button is pressed display changes as follows Ed BLANK Remote 42 00 12 00 12 00 12 00 controller TIMERON TIMER OFF TIMER ON OFF Select your desired TIMER mide TIMER ON or TIMEROFF ON or OFF will flash 28 Commercial Air Conditioner Model HPU 42CV03 HPU 42HV03 3 Timer setting Press HOUR A button A Every time the button is pressed time increases 1 min If button is kept pressed time will change quickly V Every time the button is pressed time decreases 1 min If button is kept pressed time will change quickly Time will be shown on LCD It can be adjusted within 24 hours 4 Confirming your setting After setting correct time press SET button to confirm stops flashing Time displayed Unit starts or stops at x hour x min TIMER ON or TIMER OFF Timer mode indicator on indoor uni
69. ure setting correct e g too high conditions 3 16 system in TIMER mode 4 15 user aware of product features etc Is the feature not es available for present X Se Ce product product eatures to user no Switch on air conditioner o need to replace mainboard Check perating status in details e g TIMER feature no Supply failure thunder storm interference from ther appliances etc Explain causes of fault to user Does the same fault occur before yes Switch off air conditioner temporarily Switch on air conditioner again after 1 minute yes Does the same no No need to replace mainboard The fault may fault occur before be caused by power supply es Disconnect contactor and reconnect it check if fuse or varistor is broken no Does the same no No need to replace mainboard Contactor fault occur before wasn t in good contact yes Check the system thoroughly e g technical data of components when power off and voltage and current of check points when power on 48 Commercial Air Conditioner 2 Sensor failure check if the wiring is correct according to no wiring diagram reconnect if sensor is fixed well Relocate yes Y Is sensor short circuit or open circuit yes R
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