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Haier MRVⅡ Air Conditioning Haier MRVⅡ can be used in a large combination with multiple outdoor units, it is only one system and is the second generation of Haier C-MRV product. Major features energy saving, intelligent control and precise temperature control, for R410A system, that is more friendly for environment as well.
Part 1 1 Installation flowchart Important points Process Confirm the selected model, 1.Engineering drawing before installation position, pipe size, layout direction Prepare the material,equipment 2. Working preparation and worker's training Confirm the person responsible 3. Working distribution for each process Confirm the model to avoid the in installation 4.
Part 1 2 Equipment delivery 2.1 After the equipment is delivered to the site, all relative persons should join the unpacking and checking work. 2.2 Pay attention to the below points when unpacking: a. Check the equipment name, model, specification and the quantity, etc. b.
Part 1 3 Outdoor installation 3.1 The unit should be placed far away the flammable, explosive or oily place. 3.2 The noise and the outlet air should not affect the neighbors. 3.3 There should be enough space for air inlet, air outlet and maintenance around the unit.
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Part 1 3.5 The bottom of steel bracket should be made from 6# channel steel. 3.6 The floor should be over 100mm higher than the ground, and there should be the drainage around to ensure the unit not being immersed in the water.
Part 1 4 Indoor installation A. With the shortest refrigerant pipe, and convenient to connect with distributing pipe and water pipe. Water pipe should keep a 1% gradient at least. B. The place for indoor unit installation should be strong enough to afford the unit weight and running shake.
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Part 1 4.1 Wall mounted unit installation installation figure: indoor side outdoor side mounting plate through-wall hole wall thickness through-wall hole section gas pipe liquid pipe fresh air pipe adhesive tape heat insulation 4.1.1 Fix the mounting plate, set the through-wall hole: install the unit on smooth wall beside beam and pillar.
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Part 1 4.2 Cassette unit installation air outlet air outlet air inlet 4.2.1 To ensure the air conditioner working effect, the installation height should be less than 3m. 4.2.2 After installation on the ceiling ,check the unit’s horizontal level ,use a gradienter to check it.
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Part 1 4.3.1 The indoor unit can be installed on the ceiling, which height is no more than 3m. 4.3.2 Install the unit with suspending pole, check if the installation place can bear the unit. 4.3.3 Fix the indoor unit to the suspending bolt, if necessary, it is possible to suspending the unit to the beam, etc.
Part 1 sending, it must connect with air sending and air return duct ,it is forbidden to blow air into working room directly, otherwise the noise level will be so high due to the high fan speed from the air outlet . 4.3.5.3 Connection between indoor unit and duct should be soft, and connect a static pressure box out of unit to avoid shaking and noise pass through the duct.
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Part 1 cause system block. 5.4 When welding the pipe, please blow nitrogen to prevent oxidation, pressure of nitrogen flow is about 0.02Mpa , otherwise the oxid layer on pipe inside will clog the pipe or damage the compressor. 5.5 Welding connection needs a changeable diameter pipe, the pipe inserted depth is : 10 mm : below φ19mm ;...
Part 1 Vertical Floor Floor Wrong Right 6 Water drainage pipe installation 6.1 Drain pipe should keep a 1% gradient at least towards water outlet direction and as short as possible, if the pipe is made of hard PVC, then set a suspender at interval of 2 meters to avoid the pipe bend.
Part 1 connection part is negative (cassette, ceiling concealed type) ,please install a water return pipe for drain pipe. 6.6 Test the drain pipe after installation. Seal the water outlet of drain pan and charge water to 2/3 part. Check the drain pan two hours later, if there is no leakage, open the water outlet to ensure if the water drainage is fluent and if the drain pipe connection is tight.
Part 1 R22 system: R410A system: Connection wire over 20cm Adhesive tape Connection wire Adhesive tape Gas pipe Liquid pipe Gas pipe Liquid pipe Heat insulator Heat insulator 8 Electric wiring Air conditioner electric wiring should comply with the relative articles in GB5024-96.
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Part 1 breaker’s capacity should be 1.5 times of outdoor’s max. running current 8.7 Indoor unit of the same outdoor system should use one power supply. 8.8 The recommended power cable is BV.BVR and V V cable ,do not use YZW cable.
Part 1 9 Pipe cleaning work Blow nitrogen is one way to clean impurity from pipe Note: If you did not blow nitrogen when welding pipe , this method can not clean the oxid on the pipe wall . Connect the nitrogen with unit system via pressure relief valve, adjust the valve to 5Kg/cm , supply nitrogen to system, seal the pipe end by hand or others , when the pipe pressure getting too high to be sealed ,...
Part 1 10 Leakage test Connect nitrogen tank, pressure relief gauge, gauge manifold and refrigerant system in turn, charge nitrogen to system both on high and low pressure sides at same time, notice items: 10.1 Please must test system by nitrogen , do not use any other gas. 10.2 It is better to do the leakage test before connecting with outdoor unit, because the stop valve of outdoor unit may leak due to welding or outside force, then nitrogen will go into outdoor circle system.
Part 1 apply the pressure again and observe for another 24 hours. 11 Evacuation Connect vacuum refrigerant system gauge manifold ,draw out the air and moisture with vacuum pump from the pipe , then make system get vacuum and dry. Important points: 11.1 Please must use vacuum pump to evacuate system, forbid to use refrigerant to pile out the air from system.
Part 1 12 Additional Refrigerant Charging When the unit out of factory ,refrigerant charging amount is exclude the refrigerant in the pipe , so after installation the piping, additional refrigerant should be charged on site. 12.1 Connect the refrigerant tank, gauge manifold to high pressure and low pressure stop valve via flexible hose in turn, open tank valve and pile out the air in the pipe.
Part 1 13 Trial operation After testing leakage, evacuation charging additional refrigerant , before being electrified , please check the following items: 13.1 The capacity of indoor and outdoor without load, and the specs of circuit breaker. Check if power cable is in compliance with the provision. 13.2 If the power cable is fixed reliably, grounding resistance should not be over 4Ω...
Part 1 13.8.2 Record the current , voltage, temperature and frequency after system runs for 30 minutes. 13.8.3 If the failure code displays, then analyse and maintain the problem according to relative technical data, also please record the treatment and serial number of the unit.
Part 2 1. Working preparation before debugging 1.1 Outdoor checking 1.1.1 Refrigerant pipe length and drop height checking Allowable refrigerant pipe length and height Refrigerant pipe length(one way) Indoor unit, Max. 100m Piping length between outdoor and the first Max. 70m branch(main pipe) Piping length after the first branch Max.
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Part 2 SLAVE SLAVE SLAVE MASTER UNIT UNIT UNIT UNIT ≤ 75m 50 m ( if the indoor unit is higer, it is 40m) the first branch ≤ 50m lowest indoor unit/ farthest indoor unit Refrigerant piping length and height difference Items Max.piping( Total piping length...
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Part 2 1.1.2 Outdoor pipe connection explanation (take four outdoors in combination as an example) SLAVE SLAVE SLAVE MASTER UNIT UNIT UNIT UNIT Oil equalization Oil equalization Oil equalization pipe ∮ 9.52 pipe ∮ 9.52 pipe ∮ 9.52 Balance pipe ∮ 19.05 Balance pipe ∮...
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volume Part 2 B. Additional refrigerant charging volume on site Additional charging standard of liquid pipe Liquid pipe 25.4 22.22 19.05 15.88 12.7 9.52 6.35 Dia. Additional charging volume 0.53 0.28 0.12 0.06 0.03 per meter (kg/m) Calculating method of additional refrigerant charging volume ●...
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Part 2 1.1.4.2 Max. refrigerant charging volume of system Capacity 8HP/10HP 16/18/20HP 24/26/28/30HP 32/34/36/38/40HP Volume(KG) Remark: Max. refrigerant charging volume of system is standard refrigerant charging amount when out of factory plus additional refrigerant charging amount on site of all the units in whole system 1.1.5 Unit No.
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Part 2 layer of all indoors and outdoors should be connected together, and be grounded on outdoor at single point, and be grounded on outdoor at single point. 1.2 Indoor checking 1.2.1 Indoor unit pipe size checking Model 22~45 56~90 112~140 Gas pipe (mm) Φ12.7...
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Part 2 1.2.3 Select control mode Wired Indoor control Wired control Remote Remark master slave unit control unit CN23 Short Disconnectio 1,Communicatio connectio connectio addresses n ( Set between wired when out control master of factory) unite and wired control slave CN30 Short...
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Part 2 1.2.4 Set indoor communication address, central control address and slave unit address(model, No., position) ,and fill all these information in the “additional refrigerant charging list” on front plate of the master unit. 1.2.4.1 Setting method of communication address between indoor and outdoor Setting Setting method...
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1. “1” of SW03 at “ON” (up) 2. press “filter reset” button for 5 seconds then enter system address setting mode, choose indoor address by press ”TEMP+ /-” button. 3. Temp. display area displays: system unit No. address+XX, then press ”TEMP+/-” setting by button, the unit No.
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Part 2 Unit No. setting by hand (dip switch position of SW03 is in correspondence with the marks on PCB) Indoor SW03 addres SW03 Indoor address 1 2 3 - 36 -...
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1.2.4.2 Indoor central control address setting (necessary for the system with central control or BMS control) setting setting method remark mode central “1” of SW02 on indoor PCB at controller “ON” (up) set on address details about address and site setting dipswitch position please refer by hand...
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Part 2 Central controller address setting table centr centra SW02 SW02 contr contro oller ller addre addre - 38 -...
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Central controller address setting table SW02 centr SW02 centra contr contro oller ller addre addre Part 2 - 39 -...
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1.2.4.3Inspection flowchart before commissioning 1.2.4.3.1 Outdoor check if the piping and branch if they are not accordant, pipe is installed properly please change according to the use manual confirm additional according to the recharging refrigerant amount refrigerant standard chart 8HP,10HP: confirm gas/liquid more than 10HP: confirm gas/ confirm stop valve state stop valve are open, oil/ pressure...
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1.2.4.3.2 Indoor choose indoor controller wired control type remote control type wired controlled master unit: pull out the short connection wire set state when out of factory CN23,CN3,SW08-[6] at "OFF", (CN23 、 CN30 short connected, CN21 to remote reciever SW08-[6] at "ON"; SW01 at "0"), terminal block A,B,C to wired controller wired controlled slave unit: pull out...
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if yes Confirm indoor address, if the unit quantity displayed on master unit SW3 SW4 SW5 and actual quantity are accordant Indoor address setting Set address manually set address automatically Check indoor communication Check indoor unit controller which by digital tube of master unit, display the repeated address one by (confirm the set unit No.
2. Cooling commissioning 2.1 Commissioning flowchart if the master unit can not find all the indoor, it can not start to run, electrify outdoor 12 hours in advance before trial operation, all indoors confirm outdoor unit confirm indoor unit startup and run in cooling mode with high fan speed, set temperature at 16 degrees if slave unit can start normally, for the first check if there is air flow out from...
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Parts Items Estimation standard SV1: 1. 6A unloading valve,3-core, red(discharging from high pressure side of oil segregator to low pressure side of gas segregator) ,after system being electrified, pipe become hot, under the situation that unloading valve be close for long time, check the temp.
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No. Parts Items Estimation standard SV4: 4-core, yellow (from discharging pipe to the top of compressor); SV5: 2A, 4-core, yellow ( from the top of compressor to air suction pipe) ; when SV4 open and SV5 close, compressor runs with full load, when SV4 close SV5 open, compressor runs with half load, If there is wrong current of full load running is over than...
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1. Connect the pressure gauge at low in heating mode, the pressure checking joint of slave unit. one-way valve which low pressure of slave unit should be one-way paralleled with outdoor the same with master unit basically valve EEV leaks, so plenty of 2.
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No. Parts Items Estimation standard high the high pressure during compressor running, temp. after pressure capillary form oil oil return capillary is rather high oil return segregator is (higher than ambient temp.) capillary blocked by weld Spraying and oil return capillary from spraying open SV3 to check if the capillary temp.
2.3 Indoor checking No. Parts Items Estimation standard If the EEV has no Electronic When all indoor in cooling mode, EEV all response, or can not expansio open to 480 or close to min, check the close fully, can not n valve dip switch if SW08-7 is “off”...
3. Heating commissioning 3.1 Commissioning flowchart if the master unit can not find all the indoor units, it can not start to run, electrify outdoor unit 12 hours in advance before trial operation, set temperature at 16 ℃ , when debugging in heating mode, outside environment temperature should lower than 21 ℃...
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trouble trouble trouble remark (trouble diagnose exhibition diagnose shooting method) refer observe indoor TC1/TC2/EEV by dipswitch, standard, indoor TC1 is much higher than calculate does not TC2, EEV is displayed open system cool, or fully, when unit startup, voice lack of amount cooling of refrigerant flow can be...
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exhibition shooting diagnose method) change the units pipe is too long , according height of the use between indoor manual, or units is more than standard electric heater high/low pressure Outdoor 4-way are too low, and outdoor valve change can not rise even does not 4-way supply refrigerant,...
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exhibition diagnose shooting (trouble diagnose method) wired two switches of dial SW01-1 two switches of controller SW01 master SW01 on wired control wired wired controller indoor, wired controller at controller to “OFF” controller “ON” “OFF” shows 8888 wired circularly controller or change recover damaged...
4.2 Outdoor trouble diagnose and trouble shooting trouble trouble trouble analysis exhibition shooting check if the power voltage is 380V±10% normal, low power voltage will (342V~ cause big current 418V) power module is damaged, change power then three phase output is not in balance and power module module alarm...
4.3Problems during installation trouble analysis trouble shooting the sensor is damaged when gas pipe sensor should be welding, or the sensor is pulled pulled off during welding, off and not be reposition and reset it after welding insulation layer is too thin, it Dew occurs on connection pipe should thicker than 15 mm calculate the liquid pipe...
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trouble analysis trouble shooting wired controller controls one wired controller only multiple indoor units, but these indoors are not in one system, so can control indoors in some of indoors in one system one system do not run for indoor installation, dimension checking hole is too small or too position of checking hole...
4.4 Diagnosing method for damaged main parts 4.4.1 Pressure sensor high pressure sensor 0~3.33Mpa,output 0.5~3.9V, low pressure sensor 0~0.98Mpa, output 0.5~3.5V. Output voltage and pressure are linear relationship. A . High pressure Pd is abnormal: check if there is +5V voltage between 1 and 2 pins of CN26 with multimeter, if no please check if the PCB +5V power supply (if CMOS chip 7805 is normal) is damaged, if yes please check if the voltage between 4 and 2 pins is within the output...
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refrigerant in the system firstly. 4.4.2 IPM power module (the same with rectifier) A. Remove compressor cable, capacity cable from power module, dial multimeter to “diode”, connect the red terminal (positive) to P of power module, and connect the black terminal (negative) to U, V and W in turns, check if the resistors are infinite;...
5 Attached table 5.1 Table 1: Additional refrigerant charging list Additional refrigerant charging list quantity of indoor unit: indoor indoor indoor indoor indoor indoor address No. model position address No. model position pipe length and refrigerant recharging amount liquid pipe additional refrigerant liquid pipe additional refrigerant...
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5.2 Table 2: Relative settings 5.2.1 Communication address between indoor and outdoor setting method Setting Setting method Remark mode setting 1. Dip switch SW02 and SW03 state Unit No. on indoor PCB are all at “off” setting when (down), that also is the setting automatically out of state when out of factory.
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5.2.2 Indoor central control address setting (necessary for the system with central control or BMS control) setting setting method remark mode central 1. “1” of SW02 on indoor PCB at controller “ON” (up) setting address 2. details about address and on site setting by dipswitch...
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5.3 Table 3: Setting state and function definition of PCB and wired controller when out of factory Setting Items Function state 1. When one wired controller controls one indoor, or several wired controller control one indoor, or with remote controller, do not change this switch. dial to 0 2.
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Settin Items Function state LED3 is used together with LED4, if the communication between indoor and outdoor is normal, LED3 and LED4 will flash regularly, flash frequency of red led is lower than green led troubl it will not light in normal situation, according of indicat the flash times you can diagnose the failure or led...
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0010451181A(CN10 terminal of EEV 6-core red) state when state when dip switch jumper out of functions out of factory factory 0: fix air volume SW06-1 connected 1: commonly control temp. difference selection in AUTO mode SW06-2 connected 0: Tdif = 2 1: Tdif = 3 0:...
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Part 2 0010451181A(CN10 terminal of EEV 6-core red) connected change running mode that displayed on wired controller SW07-7 (J8)0(J9)0: AUTO/HEAT/ DEHUMIDIFY /COOL/SWING connected (J8)0(J9)1: Auxiliary heat / HEAT /DEHUMIDIFY /COOL/SWING (J8)1(J9)0: DEHUMIDIFY SW07-8 /COOL/SWING (J8)1(J9)0: HEAT /DEHUMIDIFY /COOL/SWING connected 0:when unit stops, oil return, in low SW08-1 speed 1: fan stops...
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5.4 Table 4: system running data display –digital tube of master unit data display 5.4.1 System installation data display and function operation method content displaye function function operation d on definition method digital tube refrigerant means R22 type quantity outdoor means 3 slave units, no connected master unit...
content function function operation displayed definition method on digital tube ●SW8-8 on left side -– that mean slave unit outdoor display the running fully while runs setting master unit is running manually frequency ●SW8-7 on left side – with fix of master that means slave unit frequency...
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5.4.2 Indoor unit running data display content function displayed on remark definition digital tube “1111” means indoor display the indoor has communicati 0/1/ 0~ 1.dial SW03 or has not to 0, it shows communicat “----“ means running data communicati of indoor from No.1 to No.16 display such as “1”, if...
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5.4.3 Outdoor running data display function content displayed on definition digital tube display failure such as “20”, if no failure 0/1/ code of the it will shows “0” outdoor display running “HHHH” means heating 0/1/ mode of the “CCCC” means cooling outdoor display capacity of such as “10”...
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content displayed on function definition digital tube the slave unit LED1 display “1” means capacity valve SV4 open, ”0” means close state the slave unit LED2 display “1” means 1/2/3 capacity valve SV5 open, ”0” means close state the slave unit LED3 display “1”...
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5.5Table 5: Failure code list 5.5.1 Outdoor failure code list digital tube indication indication on wired failure code failure description controller definition master (hex) unit master unit sensor temp. is below defrosting -60.87 ( open circuit ) or temp. sensor over 135.4 (short circuit) Te failure for 1 minute...
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Part 2 digital indication tube indication on wired failure code failure description controller definition master (hex) unit high pressure over master unit high 4.9V, or below 0.1V pressure for 30 seconds, resume sensor manually then turn to failure backup running high pressure over...
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digital indication tube on wired indication failure code definition failure description controller master (hex) unit inner thermal inner thermal protector protector of master circuit of master unit unit compressor compressor failure acts after compressor wrong wiring for master startup minutes, unit high/low pressure lower than Ps for 1 sensor Pd,Ps...
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digital indication tube on wired failure code indication failure description controller definition on master (hex) unit operation, master unit oil compressor oil temp. is temp. below (Ps+10)ºC for 5 minutes, resumable in operation, slave unit slave unit communication missing abnormal, or slave unit operation is powered off failure...
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Part 2 digital tube indication indication on wired failure code failure description controller definition master (hex) unit sensor is below -60.87 the slave unit oil (open circuit) or over 77(7) temp. sensor 135.4 (short circuit) Toil failure for 1 minute EEPROM faulty the slave unit...
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Part 2 5.5.2 Indoor failure code list flash times of flash times of health LED indication LED5 on indoor on wall PCB/timer LED failure code definition on wired mounted unit controller on remote remote receiver receiver —— indoor ambient sensor Ta failure ——...
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Part 2 flash times of flash times of health LED indication LED5 on indoor on wall on wired PCB/timer LED failure code definition mounted unit controller on remote remote receiver receiver —— indoor central control address repeated —— wall mounted unit connecting board...
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5.6 Table MRV trial operation data tracking list master unit slave unit 1 slave unit 2 slave unit 3 TOIL...
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MRV trial operation data tracking list indoor running data indoo indoor indoor indoor unit capacit unit capac unit capaci unit capaci V TA V TA V TA V TA 1 TC2...
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MRV trial operation data analysis 5.7.1 MRV trial operation data analysis (cooling fully) master unit slave unit 1 slave unit 2 15.88 4.19 TOIL 2000/2000 2000 2000 10.5 100% 100%...
Part 2 data analysis problem diagnose open angle of EEV on stop indoor shows 4 (close fully), normally the coil temp. should close to indoor one EEV ambient temp. ( TA±3 ); this indoor two coil temp. is can not be much lower than ambient temp., that is EEV does closed fully not closed fully and cause liquid return----to find the...
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.7.2 MRV single unit running data analysis (cooling mode) TOIL...
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Data analysis problems diagnose remark open angle of EEV on stop indoor diagnose shows 4 (close fully), normally the coil should one EEV temp. should be close to indoor ambient done after oil can not temp. (TA±3), this indoor coil temp. is is return and be closed much lower than ambient temp., that...
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5.7.3 MRV running data analysis(all in heating mode) master unit slave unit 2 slave unit 3 19.68 3.35 TOIL 1248 1800 1360 21.5 11.4 11.0 100% 100% 1.7 0.8...
Data analysis problems diagnose liquid pipe (TC2) temp. is low,TC2 < TA+10; gas pipe (TC1) temp. is low indoors can not because the EEV can not open, so the open refrigerant does not flow, then the coil temp. is close to ambient temp. sensors in heating mode the indoor TC1>TC2, but indoors...
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Part 3 Part 3 Commissioning and Maintenance for R410A System 1.Working preparation before commissioning 1.1 Outdoor checking-------------------------------------86 1.2 Indoor checking---------------------------------------92 1.3 Relative settings--------------------------------------93 1.4 Indoor parameters------------------------------------98 1.5 outdoor parameters----------------------------------99 2.Trial operation and the performance 2.1 Trial operation sequence------------------------100 2.2 Inspection before trial operation--------------101 2.3 State setting of trial operation-----------------103 2.4 Trial operation---------------------------------------104 3 Failure code...
Part 3 1.Working preparation before commissioning 1.1 Outdoor checking 1.1.1 Refrigerant pipe length and drop height checking Allowable refrigerant pipe length and height Refrigerant pipe total length(one way) 300m Refrigerant pipe max. length(one way) 150m Piping length between outdoor and the first Max.
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Part 3 outdoor1 outdoor 3 outdoor2 1st gather pipe 2st gather pipe L1+L3 < 10m, L2+L3 < 10m Gas/liquid pipe: Oil equalization pipe: L5+L6 < 10m h < 5m ght difference between outdoors: Note: a. HZG-30/A includes HZG-20/A; b. The connection pipe among outdoors can not be higher than the stop valve position;...
Part 3 when the distance between outdoors is outdoor over 2m, the oil trap must be set (upright projecting pipe, 200mm high) outdoor outdoor below 2m below 2m over 200mm over 200mm L1 < 10m L2+L3 < 10m L7+L14+L13 < 40m Max.
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Part 3 1.1.3 Outdoor pipe size checking AV08NM AV10NM AV12NM AV14NM AV16NM AV18NM AV20NM Model VERAA VERAA VERA VERA VERA VERA VERA Capacity (HP) Φ19.05 Φ22.22 Φ25.4 Φ25.4 Φ28.58 Φ28.58 Φ28.58 pipe(mm) Liquid pipe Φ9.52 Φ9.52 Φ12.7 Φ12.7 Φ12. 7 Φ15.88 Φ15.88 (mm)
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Part 3 AV36NM AV38NM AV40NM AV42NM AV44NM AV46NM AV48NM Model VERA VERA VERA VERA VERA VERA VERA Capacity (HP) Φ38.1 Φ38.1 Φ38.1 Φ38.1 Φ38.1 Φ38.1 Φ38.1 pipe(mm) Liquid pipe Φ19.05 Φ19.05 Φ19.05 Φ19.05 Φ19.05 Φ19.05 Φ19.05 (mm) equalizati Φ9.52 Φ9.52 Φ9.52 Φ9.52 Φ9.52...
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Part 3 B. Additional refrigerant charging volume on site Additional charging standard of liquid pipe Liquid ¢ ¢ ¢ ¢ ¢ ¢ pipe Dia. 22.22 19.05 15.88 12.7 9.52 6.35 Additional charging 0 . 3 5 0 . 2 5 0.17 0.11 0.054...
Part 3 1.2 Indoor checking 1.2.1 Indoor unit pipe size checking Model 22~28 36~56 71~140 Gas pipe (mm) Φ9.52 Φ12.7 Φ15.88 Liquid pipe(mm) Φ6.35 Φ6.35 Φ9.52 Remark: the above table does not include wall mounted indoor 1.2.2 Power signal wire confirmation: Indoor units of one system use one power supply, The signal wire shielded layer of all indoor and outdoor units should be connected together, and be grounded on outdoor at single point.
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factory. Part 3 B. The indoor controlled by master/slave wired controller and the indoor controlled by individual wired controller are all wired controlled master indoor. C. The remote receiver is equipped with a wire which can be inserted in CN21. 1.3 Relative settings 1.3.1 Setting method in central control 1) Indoor central control address setting method:...
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and cancel the communication with wired controller, the detailed Part 3 method is as follows: Set the jumper J19 on indoor PCB: function connected wired control disconnected remote contr ol CN30 on indoor PCB: CN30 function connected wired control disconnected remote contr ol Note: if making central control for more than one indoor, please must connect the wired controller.
indoor master unit, and among indoor slave units. Part 3 3) Pull out the jumper of CN23 on the indoor slave unit PCB 1.3.3 Dip switch setting "1" shows dip switch is ON or jumper is short connected; "0" shows dip switch is OFF or jumper is disconnected.
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Part 3 B. Indoor address setting when in central control by central controller: SW02 (only on the master unit). SW02 description central control address=1 central control address=2 ---- ---- central control address=127 central control address=128 set central control address by wired controller Forbidden to set address by wired controller C.
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Part 3 1.3.4 Dip switch setting of wired controller selection item function description state set as simple controller changeover of controller type set as standard controller use room temp. sensor on wired controller selection of room temp. sensor not use room temp. sensor on wired controller without auto restart auto restart with auto restart...
Part 3 1.3.5 Dip switch on inverter board cannot run without load, set when out of factory inspection of operation SW1-1 without load can run without load set as OFF when out of factory SW1-2 pre-set SW1-3 pre-set set as OFF when out of factory communication failure alarm, set when out of factory SW1-4...
Part 3 1.5 Outdoor parameters description SW10 SW11 function unit No. display outdoor failure code failure code of outdoor bus data transmission display outdoor No. priority pre-set display running mode H H H H: heat C C C C: cool outdoor capacity 10.0 shows 10HP outdoor total running...
Part 3 description SW10 SW11 function unit No. Pd pressure unit: KG Ps pressure unit: KG TD inverter discharging temp. LED1, LED2, LED3 will display TS inverter suction temp. LED1, LED2, LED3 will display LED1, LED2, LED3 will display TE inverter defrosting temp. unit No.
Part 3 2.2 Inspection before trial operation Before inspection, confirm the state of indoor and outdoor to avoid the trial failure because of the incorrect installation. 2.2.1 Indoor unit confirmation inspection items results If indoor unit is in good condition, and if the electric box position is in accordance with the state when out of factory, also if it is fixed firmly.
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Part 3 2.2.3 Wiring confirmation inspection items results If outdoor power cable is fixed at correct position. And if the power cable is in compliance with the requirement. If indoor power cable is fixed at correct position. And if the power cable is in compliance with the requirement.
Part 3 Note: Check if outdoor stop valve has been open fully. When there is only master unit, please confirm if the oil pipe stop valve has been close fully. 2.3 State setting of trial operation Confirm being electrified Indoor and outdoor are electrified respectively and then check as the following table: inspection items results...
Part 3 2.4 Trial operation Generally, confirm all the indoors one by one. Please set the other indoors at STOP state 2.4.1 Main power supply and preliminary confirmation if RUN LED on wired ※1 controller is light if STANDBY on wired controller ※2 is light if the failure code is displayed...
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Part 3 2.4.3 Cooling operation confirmation start once outdoor stops, re-start set the mode as COOL: press the button up the unit 2 and a half for over 5 seconds at OFF state minutes later confirm the running state of if blowi ng out cold air the compressor, indoor EEV if the ven tilation is good...
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Part 3 2.4.4 Heating operation confirmation start once outdoor stops, re-start set the mode as HEAT: press the button up the unit 2 and a half for over 5 seconds at OFF state minutes later confirm the running sta te of if blowing out hot air the compressor, indoor EEV if the ventilation is good...
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Part 3 2.4.5 Outdoor confirmation (cooling) outdoo r rated operation in cooling mode outdoor confirmation in master unit in operation cooling mode at 10 seconds' interval outdoor confirmation in No.1 slave unit in operation cooling mode at 10 seconds' interval outdoor confirmation in No.2 slave unit in operation cooling mode...
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Part 3 ※ 1 check indoor power cable if voltage among if volt age between L if volt age between A A, B, C on wired and N on indoor and B on indoor if indoor fuse is normal controller is AC terminal block is AC terminal block is AC 220V...
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Part 3 ※ 3 if voltage among 1. indoor PCB abnormal if voltage between if the other indoors B, C on wired 2. wiring of indoor PCB B and C on indoor if fan motor runs begin to run controller is AC is damaged or the port terminal block is is not insert ed well...
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Part 3 Note 1): Temp. difference between air inlet and air outlet Standard A. In cooling mode, after running for at least 30 minutes, it is normal that the temp. difference between air inlet and air outlet is over 10 , (at max.
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Part 3 Note 3): Running pressure standard indoor 18~32 ℃ high pressure 2.0~3.5MPa cooling (at max. frequenc y) outdoor 25~35 ℃ low pressure 0.6~1.0MPa high pressure 2.2~2.8MPa heating indoor 15~25 ℃ (at max. frequency) low pressure 0.3~0.8MPa outdoor 5~10 ℃ The above value is measured after running for 15 minutes (ambient temp.
Part 3 3 Failure code 3.1 Inverter master outdoor failure code list digital indication tube on wired indication controller on master failure code definition failure description (hex) unit the sensor voltage is below 0.1V (open circuit) or over master unit defrosting temp. 4.8V (short circuit) for 1 minute, not alarm in defrosting sensor Te failure and within 3 minutes after defrosting.
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Part 3 digital indication tube on wired indication controller on master failure code definition failure description (hex) unit EEPROM faulty, or being inserted conversely, with incorrect EEPROM failure of master unit part main chip 849 Td sensor is over 120℃ for 10 seconds, unit stops and master unit discharging temp.
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Part 3 digital indication tube on wired indication controller on master failure code definition failure description (hex) unit before startup, detect if the sensor is in short circuit or in radiator sensor failure open circuit. 2 minutes and 50 seconds later after unit stops, resume.
Part 3 digital indication tube on wired indication controller on master failure code definition failure description (hex) unit DC fan motor driving board in communication the code byte is 0*40. 2 minutes and 50 over current or curent seconds later after unit stops, resume.If it occurs 3 times transducer broken down in an hour, confirm the alarm.
Part 3 4.Trouble diagnose and trouble shooting [46]communication between master unit connecting board and inverter board failure if connecting board check master unit connecting board sends serial signal to inverter board/slave unit PCB if connecting board receives contineous signal from inverter board/slave unit PCB check master unit inverter board/slave unit PCB check power source interference...
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Part 3 [01/02/03/04/20/21/22/23/24] sensor circuit reconnect if sensor terminal is fixed well if sensor resistor replace sensor /characteristic is proper check if PCB is faulty, if yes, replace it [05/33] EEPROM failure if the chip is fixed well reconnect replace it if the chip is damaged check if PCB is faulty, if yes, replace it...
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Part 3 [74] compressor overcurrent protection if slave unit voltage is proper improve the power source circuit eliminate the abnormal reasons if there is abnormal overload if detection circuit of rectify the wiring current tranducer is proper if the slave outdoor PCB is faulty, replace it - 119 -...
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Part 3 [30] high pressure switch circuit if high pressure switch acts if high pressure switch check and replace if faulty is normal if the wi ring is normal check and rewiring if faulty if service valve opens fully if stop valve opens if in cooling outdoor fan motor runs normally if the connector,...
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Part 3 [30/31] high/low pressure switch circuit if in heating indoor fan motor is normal if the connector, modify capacitor,fan motor are normal if indoor EEV is normal if the connector, modify the coil are normal if heat exchanger /filter are clogged or the eliminate the abnormal reasons air flow is in short circuit if the valve body is...
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Part 3 [38/40] high pressure protection (Pd sensor) if characteristic of modify high pressure sensors are normal if stop va lve opens fully stop va lve opens fully if in cooling outdoor fan motor runs normally if the connector, modify capacitor,fan motor are normal if heat exchanger...
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Part 3 [44/06]communication circuit between indoor and outdoor if wiri ng between P and modify the communication wire Q is wr ong or broken down if the port of CN15 on modify the port indoor PCB is normal if the port of CN19 on outdoor connecting board is normal electrify the outdoor if outdoor power source is normal...
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Part 3 [09]indoor address repeated if wiring between P and modify the wiring Q is normal if communication wire is modify the communication wire connected with multi outdoors if indoor QTY conn ected with outdoor is normal check o utdoor connecting board, if faulty, replace it [61]master unit IPM (power module) alarms if the fan connected with CN5...
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Part 3 [07]communication abnormal between indoor and wired controller if wiring o f terminal A, B, C of modify the wiring wired controller is proper if there is broken wire or port is modify the connection fixed improperly if in group operation set one indoor if there is indoor unit unit as No .
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Part 3 [34] discharging temp. (TD) protection acts if outdoor gas/liquid stop open all stop valves valves open fully if outdoor EEV is modify outdoor EEV normal(the connector, wires, coil, valve body, outdoor PCB) if TD sensor replace TD sensor resistor/characteristic are normal if wire spec is right match the right wire...
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Part 3 [39/31] low pressure protection acts if connector, capacitor if in cooling indoor modify and fan motor o f in door are fan motor runs normally normal if indoor heat exchanger check indoor PCB, or filter is clogged if faulty, replace it clean if the low pressure replace low pressure sensor...
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Part 3 [39] low pressure sensor Ps circuit if LED2 is on modify connector and wires if the low pressure replace low pressure sensor sensor characteristic is normal compressor damage or 4-way valve bad reversing will cause in running (10 minutes the refriegrant flows from later after startup) if Ps is over discharging pipe to suction pipe...
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Part 3 [36] oil temp. too low before startup, if outdoor start up outdoor after being electrified has been electrified for over for over 6 hours 6 hours when indoor is electrified individually, in running, if some indoors switch off the unit by controller after are powered off suddenly and not be switched being electrified off normally (EEV not close well)
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Part 3 [46] communication abnormal with inverter board 1. if inverter board is electrified, if not, if LED2 is on check if the power cable is fixed well. 2. if the pa rts of inverter board are bro ken down, if yes, change the board. if the communication wire with replace the wire the main board is broken down...
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Part 3 [47] radiator temp. abnormal if radiator temp. rep lace radiator sensor is normal temp. sensor when compressor or fan check if main board is motor is running, if radiator replace main board broken down control port SV3 has output if radiator fan motor repair the bad terminal terminal is fixed firmly...
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Part 3 [63] incorrect wiring solve as ACCT current check as ACCT is abnormal transducer is abnormal check if U, V, W is make some improvement lack of phase [50] voltage too high check if voltage of improve the power power supply is normal supply su rroundings check if wiring of...
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Part 3 [53] ACCT current transducer abnormal check if wiring of current transducer is re-wiring connected well check if arrow direction of ACCT is change the direction to rectifier port check if compresso r and the tran sducer change corresponding parts are lack of pha se [65] DCCT current transducer abnormal check if wiring of...
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Part 3 [58] IPM alarms check if gate circuit re-fix board is fixed well check if power module is damaged change corresponding parts eliminate the failure as "ACCT over current protection" and "radiator temp. abnormal" [68] fan motor IPM alarms check if power module is damaged change corresponding parts...
Part 3 [54] voltage too low check if power supply improve the power voltage is normal supply surroundings check if CNVDC make improvement wiring is normal check if AC check the corresponding circuit contactor acts check if wiring of electrolytic capacitor re-wiring and reactor is normal [73] fan motor detecting out of control...
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Part 3 [60] logic abnormal check if there is improve the power interference around supply surroundings the electric box check if DCCT, make improvement ACCT is no rmal if VDC is normal check AC contactor circu it if voltage of IPM- replace inverter board FO is normal - 136 -...
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Part 4 Part 4 Wiring diagram 1. Wiring diagram of outdoor unit 1.1 R410A system-------------------------------------------------------------138 1.2 R22 system-----------------------------------------------------------------139 2. Wiring diagram of indoor unit 2.1 High static pressure duct unit---------------------------------------141 2.2 Med static pressure duct unit----------------------------------------142 2.3 Low static pressure duct unit----------------------------------------143 2.4 Cassette unit AB09-16--------------------------------------------------144 2.5 Cassette unit AB18-48--------------------------------------------------145 2.6 Wall mounted unit--------------------------------------------------------146...
Part 4 1. Wiring diagram of Outdoor unit 1.1 R410A system CN42 PTCN 6 5 4 3 2 1 CN41 CN40 W PTCL COMP CN46 B_SERIAL STOP LD2 LD3 START DOWN radiator fan CN39 W fan motor MODULE-COM driving board SW10 SW11 gate circuit board CNDC2...
Part 4 2. Wiring diagram of indoor unit 2.1 High static pressure duct unit 0010525047 WIRING DIAGRAM OF INDOOR UNIT Symbol Description - 140 - Fan Motor Running Capacitor Transformer Ambient Temperature Sensor Gas Pipe Temperature Sensor CN13 Malfunction Code indication by Wired Remote Controller CN14 CN16 The Flash Times...
Part 4 2.2 Med static pressure duct unit WIRING DIAGRAM OF INDOOR UNIT 0010578437 S mbol Description Malfunction Code indication by Wired Remote Controller Fan Motor The Flash Times Malfunction of LED5 on the Malfunction Contents Running Capacitor Code the PCB/Timing Transformer LED on the Wireless Receiver...
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Part 4 2.3 Ceiling concealed duct unit 0010578433 WIRING DIAGRAM OF INDOOR UNIT Dip Sw ch Function Symbol Description Dip Switch (8P) Wired controller address and indoor unit capacity setting SW01 Fan Motor Dip Switch (8P) Transmission address setting between I.D and centrol controller SW02 Running Capacitor Transmission address setting...
Part 4 2.4 Cassette unit AB09-16 0010578434 CIRCUIT DIAGRAM OF INDOOR UNIT(AB09-16) Description Malfunction Code indication by Wired Remote Controller Fan Motor The Flash Times Malfunction Malfunction Contents of LED5 on the Running Capacitor Code the PCB/Timing Transformer CN8 W LED on the FAN-01 CN35...
Part 4 2.5 Cassette unit AB18-48 0010578436 WIRING DIAGRAM OF INDOOR UNIT(AB18-48) Sy bol Malfunction Code indication by Wired Remote Controller Description P/G Motor The Flash Times of Malfunction LED5 on the PCB/ Malfunction contents Running Capacitor Timing LED on the Code Wireless Receiver Transformer...
Part 4 2.6 Wall mounted unit 0010578435 WIRING DIAGRAM OF INDOOR UNIT Sym l Description Malfunction Code indication by Wired Remote Controller Fan Motor The Flash Times Malfunction Malfunction Contents of LED5 on the Running Capacitor Code the PCB/Timing Transformer TR1, LED on the Wireless Receiver...
Part 4 2.7 Convertible unit WIRING DIAGRAM OF INDOOR UNIT 0010526531 Malfunction Code indication by Wired Remote Controller *Master/Slave Wired Remote controller and Wireless Remote Setting The Flash Times Malfunction of LED5 on the Malfunction Contents At the time of installation or after service inspection/repair Code the PCB/Timing LED on the...