SERVICE MANUAL - North American HVAC Products
Contents
1. 1022 8 4258t0 5 l 421 8 0 5 jarO 100 A IT N A Et eH HES ff f Ope te fi f eS Cc o C Cc Cc o C eHe H gt bt EH gt J s f s f f s s f e o e o o e gt lt gt o o o 50 SEL 0 EE o o o e o o e gt JU o i 479 gt gt T gt fl gt 2 D o oy o J 33 L 14 l 636805 For MSC 28CRDN1 MN15W and MSC 36CRDN1 MN5W models 1490 C 4 3 2 Outdoor Unit More than 30cm More than 60cm Service space OIII RI Sd RI Sd D i More than 30cm SQ L E a E Pp Ss W E a L 2 More than 0 9p More than 70cm BN 4 Refrigerant Cvcle Diagram For cooling only models OUTDOOR INDOOR LIQUID SIDE HEAT _ EXCHANGE EVAPORATOR GAS SIDE lt 7000002. CAPILIARY TUBE HEAT EXCHANGE CONDENSER Pu a COMPRESSOR For heat pump models INDOOR OUTDOOR CHECK VALVE LIQUID SIDE Heating Model only 2 WAY VALVE ___ i _ CAPILIARV TUBE _ HEAT CONDENSER A GAS SIDE v 3 WAY VALVE REVERSING VALVE Heating Model ACCUMULATOR 4 COOLING COMPRESSOR 4 HEATING 11 5 Wiring Diagram 5 1 Indoor Unit MSC 28CRDN1 MN15W MSC 30HRDN1 MPOW MSC 36CRDN1 MN5W MSC 36HRDN1 MN5W 202033090856 RED YELLOW Y G 111250 Y G OUTDOOR UINT 2 HINES Ca FI lt gt r gt IN FAN qut OPTIONAL l F ES Wi M 3 SWITCH BOARD p WA a CI NZ CN13 CN3 EZ SWING MOTOR CN5 5010 L DISPLAY BOARD CN2 CN16 F N I S 77 DECORATIVE LOUVER MOTOR INDOOR PCB 4 M 2 1 0 12 DECORATIVE LOUVER MOTOR CN42 CNA3 Earth Fa M MI CNG NN 2 ee
3. AU F3 2 0 15 1 0 0 5 F1 0 0 8 4 4 3 Over low room temperature protection In drving mode if room temperature is lower than 10 the compressor will stop and not resume until room temperature exceeds 12 C 8 4 4 4 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode 8 4 4 5 The outdoor fan operates the same as in cooling mode 36 8 4 5 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 C In auto mode the machine will choose cooling fan only mode according to AT T1 Ts Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the setting temperature is modified the machine will choose running function again 8 4 6 Forced operation function 8 4 6 1 Forced cooling and auto function can carry out with a touch button In these two modes the machine can be changed by remote controller to any other mode at any moment 8 4 6 2 When the machine is off pressing the touch button will carry the machine to forced auto mode after this if pressing the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto forced cooling or any other operation mode pressing touch button will turn off the machine In forced operation remo
4. 5 AD BLU D 4 WAY RED P1 HEAT LLCN31 HEATER 3 HEAT NLGN33 Iz inp eee CURRENT DETECTOR 4 CN11CN12 _1 BLACK OOO RECTIFILER1 13 FAN CAPACITOR CAP1 6 Installation details 6 1 Wrench torque sheet for installation Torque 3500 3 00 4500 4700 19 6500 6700 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectional area 26 and s10 gt 10 and s16 gt 16 and x25 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 6 3 Pipe length and the elevation Standard Max Additional length Elevation refrigerant g m MSC 30HRDN1 MPOW MOG 30HDN1 MPOW MSC 28CRDN1 MN15W MOG 28CDN1 MN15W 5 8 015 9 MSC 36HRDN1 MN5W MOJ 36HDN1 MN5W MSC 36CRDN1 MN5W MOJ 36CDN1 MNSW Indoor unit Indoor unit B Outdoor unit Caution The capacitv test is based on standard length and the maximum permissive length is based on the svstem reliabilitv Oil trap should be installed per 5 7 meters 15 6 4 Installation for the first time and moisture in the refrigerant system have undesirable effects as below Pressure in the sv
5. lt 5 22 2 TRANSFORMER 4 dx OPTIONAL 1 PLASMA 5 2 Outdoor Unit MOG 28CDN1 MN15W MOG 30HDN1 MPOW 202038090667 OUTDOOR COMPRESSOR DISCHARGE TEMP SENSOR 15 CN22 WHITE pese 5 gt 7 __ gt OUTDOOR ROOM TEMP SENSOR T3 ior come gt 07 BLACK OUTDOOR HEAT EXCHANGER TEMP SENSOR MAIN BOARD WHITE 6 WHITE 4 3 RELAY RY1 BLACK A BLUE RED BLACK S R I i i i I COMPRESSOR R2503 I I MOJ 36CDN1 MN5W MOJ 36HDN1 MN5W S WAY TERMINAL BLUE YELLOW EEG PEPPE CN19 RED BLACK CN5 M E CN1LC TO INDOOR UNIT POWER SUPPLY N Mises value wav is used in the Cooing OPTIONAL 8 Heating unitony RED HEATILCNS HEATER OPTIONAL HEAT1 CN10 BLACK HEATER RED l HEAT2 CN31 PD HEATER i HEAT2 CN33 p 1 CO OY 2 CAPACITOR FAN CAPACITOR CAP1 HEAT EXCHANGER TEMP SENSOR AMBIENT SENSOR 5 202038190274 1 _ e 2 OUTDOOR COMPRESSOR H la N e 46 HIGH PRESSURE SWITCH DISCHARGE TEMP SENSOR M NL NZ 2 NL 5 WAY TEENS Y G MPRE R COMPRESSO BLACK WHITE CN14 RED AD CN21 5 QO CN23 ED BLACK ENTS YELLOW wi BSR 2 cN19 O Eug ux IE mie a CN22 MA BOARD CN1COL RED KI ER
6. 2 Outdoor fan action in heating mode including heating in auto mode 38 D A D a n p p gt un s 5 5 5 9 S 8 5 E E 8 8 Outdoor fan action in heating mode Outdoor fan action in cooling amp drying mode including heating in auto mode including cooling in auto amp forced mode 8 4 10 3 Outdoor fan action in cooling amp drying mode including cooling in auto amp forced mode Please refer to the picture above 39 9 Troubleshooting 9 1 Indoor Unit Error Displav Open circuit or short circuit of room evaporator temperature sensor IPM malfunction or IGBT over strong current protection Outdoor temperature is lower than 15 optional function Inverter compressor drive error Over voltage or too low voltage protection Note P3 If the outdoor temperature lt 15 C for 1 hour then the machine stops running the indoor display shows the error code P3 The unit can still receive remote control signals If the outdoor gt 12 for 10 minutes the compressor stops running more than one hour Or the outdoor temperature gt 5 C for 10 minutes then will recover to the last mode and fan speed E4 Reserved function 40 9 2 Diagnosis and Solution 9 2 1 EEPROM parameter error diagnosis and solution EO Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes y If the E
7. dda jab de 26 8 9 Mali a er ea a Rd cease a 27 S Operaton Modes FUNCTIONS ia ka aa 28 9 TROUDIESKOOLIN jo eme ES 40 9 Tndoor 8 Esas iatis ipi 40 2 D 41 1 Precaution 1 1 Safetv Precaution B To prevent injury to the user or other people and property damage the following instructions must be followed B Incorrect operation due to ignoring instruction will cause harm or damage B Before service unit be sure to read this service manual at first 1 2 Warning gt Installation B Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock B For electrical work contact the dealer seller a qualified electrician or an authorized service center Do not disassemble or repair the product there is risk of fire or electric shock B Always ground the product There is risk of fire or electric shock B install the panel and the cover of control box securely There is risk of fire of electric shock B Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock B Use the correctly rated breaker of fuse There is risk of fire or electric shock B not modify or extend the power cable There is risk of fire or electric shock B Donot install remove or reins
8. disassemble the batteries Do not dispose of batteries in a fire They may burn of explode B Ifthe liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked The chemical in batteries could cause burns or other health hazards The designs and information in this book are subject to change without notice for product improvement 2 Function Filter Cold catalvst filter lonizer O 8 degree heating O Silver Ico Filter O Heat compensation O Vitamin C Filter O Self diag function 3M HAM Filter O Hvdrophilic aluminum fin Bio Filter O Golden Fin O Self Clean O Follow me O Anti rust cabinet Valve protection cover PTC Heating Belt O Compressor Crankcase Heater O O optional function 3 Dimension 3 1 Indoor Unit IET MSC 28CRDN1 MN15W 1450 265 MSC 36CRDN 1 MN5W D mm 2 7
9. electric parts It may cause fire failure of the product or electric shock B Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product B Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur B When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire listrange sounds or small or smoke comes from product Turn the breaker off or disconnect the power suppiv cable There is risk of electric shock or fire B Stop operation and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives There is risk of property damage failure of product or electric shock B Donot open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure B When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock B Be caution that water could not enter the product There is risk of fire electric shock or product damage B Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock B Turnthe ma
10. error and if the wires and connectors are broken x No v lt Check if the IPM installed correctiv Ves v IPM continuitv check Check if the IPM terminal resistance values are uniform Ves Check if the outdoor fan runs properlv or the outdoor unit Correct the connection or Ves Y replace the wires and connectors Correct the installation No No Y tighten the screws and apply silicon grease No ventilation is good Yes Y No gt values are uniform Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate 4 if the compressor resistance 48 Y Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together Refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved Replace the compressor Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester Tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter Table 1 Some frequently used data fo
11. frequency to the lower level every 3 minutes 90 lt T5 lt 105 C keep running at the current frequency 5 lt 90 limit for frequency 8 3 4 Fan Speed is out of control When Indoor Fan Speed keeps too low or too high for certain time the unit will stop and the LED will displav the failure 8 3 5 Inverter module Protection he Inverter module itself has a protection function against current voltage and temperature If these protections happen the corresponding code will displav on indoor unit 8 3 6 Indoor fan delayed open function When the system starts up the louver will be active immediately and the indoor fan will open 10s later 8 3 7 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature lt 3 C and the machine connects to power supply newly or if T4 lt 3 C and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode 27 A weak current flow through the coil of compressor from the wiring terminal of compressor then the compressor is heated without operation Preheating release condition If T4 5 C or the compressor starts running preheating function will stop Heating cable It starts when T4 lt 5 C and stops when T4 gt 15 C 8 3 8 Zero crossing detection error protection If AC detects time interval is not correct for continuous 20 zero crossing signal the unit will stop a
12. out of control diagnosis and solution E3 Shut off the power supplv and turn it on 5 seconds later Is it still displaying the error code Yes Y Shut off the power supply rotate the fan by hand Does it rotate properly Yes Check the wires of fan motor Are all the connections good v NO The unit operates normally NO Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken NO Correct the connections v Yes Y If the Check whether the fan malfunction is Replace the fan de motor is normal through NO still existing motor index 1 replace the A A main PCB No Yes v Replace the Check whether the main PCB is MAN EGD The normal through index 2 malfunction is solved Yes 43 Index 1 1 AC Fan Motor Measure the resistance value of each winding bv using the tester M Input Terminal Red Black 2 b 2 White _ S N m White 3 m O V A N Black N 7 For the definite resistance value of the motor please contact the technical engineer Index2 1 Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the
13. the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 20 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set the 3 wav valve to the closed position immediatelv Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa Disconnect the charge set and tighten the 2 way and 3 way valve 5 stem nuts Use a torque wrench to tighten the 3 wav valves service port cap to a torque of 18N m Be sure to check for gas leakage 2 Air purging by the refrigerant T N C valve b Close Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant 21 Close the valve on the charging cvlinder and discharge the refrigerant bv loosening the
14. to the closed position 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fullv open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa If 16 the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fullv close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the pressure displav in the pressure indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 valve 8 Fullv open the 2 valve and 3 valve and securelv tighten the cap of the 3 wav valve 2 Air purging refrigerant mu V ZZ Gas side Charging cvlinder Procedure 1 Confirm that both the 2 and 3 wav valves are set to the closed position 2 Connect the charge set and a charging cvlinder to the service p
15. value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must has problems and need to be replaced uem Input Terminal tined N R e d 1 Black 2 W h 3 5 Ly V V V N c D Black NL te _ CU we 44 9 2 4 Open or short circuit of temperature sensor diagnosis and solution E5 E6 Check the connections N between temperature sensor and main PCB No gt Correct the connections Are the connections good Yes v Check the resistance value Replace indoor or outdoor main of the sensor via tablet Ves PCB and table 2 is it normal No Replace the sensor and check if the problem happen again 45 9 2 5 IPM malfunction or IGBT over strong current protection diagnosis and solution PO Check if the wiring between main Correct the connection or PCB and compressor connected by Ves gt replace the wires and error and if the wires and connectors connectors are broken No l Correct the installation lt if the IPM installed correctiv No gt tighten the screws and apply silicon grease Yes v IPM continuity check Check if the Replace the IPM board or replace IPM terminal resistance values are No gt the main PCB i
16. when 2 gt 5 When 0 S 2 lt 4 the compressor frequency will be limited and decreased to the lower level every minute When 4 lt 2 lt 7 the compressor will keep the current frequency When T2 gt 7 C the compressor frequency will not be limited 8 4 3 Heating Mode 8 4 3 1 Compressor running rules The operation frequency of compressor after starting submits to following rule Fmax F10 After AC starts up the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp During the 7 minutes frequency limitation is available 7 minutes later compressor running frequency will be controlled as below 31 Q l H 0 as factorv setting Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as the below rules A E Increase the frequency to the higher level until to F10 F Keep the current frequency G Decrease the frequency to the lower level until to F1 H Run at F1 for 1h if T1 Ts AT gt 6 C compressor will stop Meanwhile the compressor running frequency is limited by the current T4 C I3HEAT Of mW Decrease I2HEAT IIHEAT L 4 Resume Off Compressor stop 32 Decrease Running frequency decrease to lower level Hold Keep the current frequencv Resume No limitation for frequencv Note When is in hold zone for 3 minu
17. EPROM chip is welded on main PCB replace the main PCB directly Otherwise check No whether the EEPROM chip plugged in main PCB well Ves Y Replace the indoor main PCB Correct the connection v EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage 41 9 2 2 Indoor unit and outdoor unit communication protection error diagnosis and solution E1 Power off then turn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes Yes v Check all the wirings between indoor and outdoor indoor main PCB and outdoor main PCB following the wiring diagram Are all the wirings connected correctly Ves v Measure Vs is it moving alternatelv between positive value and negative No value Vs is the voltage between S and N of outdoor unit Yes v Is the wiring to the indoor main PCB connected correctly Yes Yes v Y Change the outdoor main PCB Change the indoor main PCB v Is the wiring to the outdoor main PCB connected correctly Power on Is the error extinguished Power on Is the error extinguished No No Change the outdoor main Change the indoor main PCB 42 9 2 3 Indoor fan speed has been
18. NORTH AMERICAN HVAC PRODUCTS LTD 3208 BETA AVE BURNABY BC V5G 4K4 CSNA 1305 A SERVICE MANUAL AIR CONDITIONER SPLIT WALL MOUNTED TYPE Corona Series CONTENTS Jo Preca ii e a dese ia a 1 a za 1 D EE E 1 2 ta 6 3 DIMENSION aj 7 B Jl OO WMI i ERE 7 52x oO 9 Refrigerant Cycle allama ee a Popp a Ee casus eset uote as Pus 10 12 sm isle mb 12 2 b MA MA MA a aq 13 5 Installadlori detallS 5 5 d A U a 14 6 l Wrenci sheet Tor INS all all OM uuu URP RII C Dad UI00E 14 6G2 Conneclima le Cal eS u 14 o5 lIpedengu y uu Dua tom 15 6 4 Installation Tor Mir 16 6 5 Adding the refrigerant after running the system for many years 19 6 6 Re installation while the indoor unit need to be repaired 20 6 7 Re installation while the outdoor unit need to be repaired 22 1 Operalion uu u tmm 25 SM Ele tronic usu uuu a 26 S ADD OV EIE 26 o D Dl O S E
19. ator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode 4 TEMPERATURE indicator Usually it displays the temperature settings When change the setting temperature this indicator begins to flash and stops 20 seconds later It displays the room temperature when the air conditioner is in FAN only operation and the range of that is 0 50 When the unit stops operation it returns to original factory settings It will also display the codes when malfunction or protection happen 5 Frequency indicator This indicator appears only when the compressor is in operation and indicates the current operating 26 frequencv 8 2 2 LED displav control function Pressing LED displav button on remote controller will turn off all displavs on indoor unit while pressing once again all displays will resume 8 3 Main Protection 8 3 1 Three Minutes Delav at restart for compressor 1 minute delay for the 1st time start up and minutes delay for others 8 3 2 Temperature protection of compressor top Top temp protector cut off for 30s and restart the compressor with 3 minutes delay 8 3 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules Compressor discharge temp T5 gt 115 C for 5s compressor stops 108 lt T5 lt 115 C decrease the
20. f the IPM board and uniform main PCB are integrated together Yes ATI Refer to the solution of fan speed has been out of control properlv or the outdoor unit No DE RM malfunction Find out the cause ventilation is good and have it solved Yes v No gt Replace the compressor values are uniform Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate 4 if the compressor resistance 46 9 2 6 Over voltage or too low voltage protection diagnosis and solution P1 Y Disconnect the unit with power supply and try to restart the unit when power supply gets normal Check if the power supply is NO normal Yes Y No Check if all the connections and wires are good Yes Y Power on and when the unit is in standby check if the voltage between P and N is around DC 310V or 340V 380V For different Correct the connections or replace the wires kinds of units the voltage differs No Consult with technical engineer to get definite value Then start up the unit measure the voltage between P and N Is it in 220V 400V Yes l Replace outdoor mainl PCB el Replace the IPM board if it is separate with main PCB 47 9 2 7 Inverter compressor drive error diagnosis and solution P4 Check if the wiring between main PCB and compressor connected by
21. flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 6 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole svstem Liquid side Outdoor unit g 2 way valve NN f A m 3 way valve Open Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 5 Disconnect the charge hose from the vacuum pump 22 2 Refrigerant charging Indoor unit Liquid side walks Outdoor unit N pe kon Z f 2 way valve N x C Gas side ma gt B 0 Check valve _ E gt Char
22. ge 24 7 Operation characteristics Cooling operation Heating operation Drving operation OC 5OC 15 50 C For the Outdoor temperature models with low 15 C 30 C temperature cooling system CAUTION 1 If air conditioner is used outside of the above conditions certain safety protection features may come into operation and cause the unit to function abnormally 2 Room relative humidity less than 8096 If the air conditioner operates in excess of this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 Optimum performance will be achieved within this operating temperature 25 8 Electronic function 8 1 Abbreviation T1 Indoor room temperature 12 Coil temperature of evaporator 13 Coil temperature of condenser T4 Outdoor ambient temperature T5 Compressor discharge temperature 8 2 Display function 8 2 1 Icon explanation on indoor display board Signal receptor ___ T TE i gt n E L HH J LC mnm j QAUTOTIMER D zi t eee al Rs aa m n D Auto indicator This indicator illuminates when the air conditioner is in AUTO operation 2 Timer indicator This indicator illuminates when TIMER is set ON OFF 3 PRE DEF Indicator This indic
23. ge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 19 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 6 6 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit Outdoor unit ind it Y Indoor unit Liquid side N Tes 71 2 way Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Air purging of the charge hose Open
24. ging cylinder 55 1 lt Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be caretul of the liquid refrigerant 3 Put the charging cvlinder onto the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the svstem with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximatelv 150g each time operating the air conditioner in the cooling cvcle however one time is not sufficient wait approximatelv 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 6 Mounted the valve stem caps and the service port 23 Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leaka
25. in power off when cleaning or maintaining the product There is risk of electric shock B When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation B Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage gt CAUTION B Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product B Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage B Keep level even when installing the product It can avoid vibration of water leakage B Do not install the product where the noise or hot air from the outdoor unit could damage 3 the neighborhoods It mav cause a problem for vour neighbors B Use two or more people to lift and transport the product Avoid personal injury B not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operational B not expose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health B Do not use the product for special purposes such as p
26. nd the LED will display the failure The correct zero crossing signal time interval should be between 6 13ms 8 3 9 Sensor protection at open circuit and breaking disconnection 8 4 Operation Modes and Functions 8 4 1 Fan mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be set to high med low auto 4 The louver operates same as in cooling mode b Auto fan The action of auto fan in fan only mode is the same as auto fan in cooling mode with 24 C setting temperature 8 4 2 Cooling Mode 8 4 2 1 Compressor running rules The operation frequency of compressor after starting submits to the following rule 28 Fmax F4 Fmax F7 Fmax F8 Fmax F6 Fmax F3 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp During the 7 minutes frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below While Tempzonel A B 6 Note When the value of T1 minus Ts keeps in the same temp zone for minutes the compressor will run as the below rules 29 Increase the frequency to the higher level until to F8 F Keep the c
27. ort of the 3 wav valve 3 Air purging Open the valves on the charging cvlinder and the charge set Purge the air bv loosening the flare nut on the 2 valve approximatelv 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cvlinder and discharge the refrigerant bv loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 3 Adding the refrigerant if the pipe length gt 5m Indoor unit y N J 1227 N Liquid side Outdoor unit j ha 2 1 j _ N N Gas side a m A TIN Check valve p Charging cylinder V Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinde
28. r If the refrigerant is R410A make the cylinder bottom up to ensure the liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 18 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 wav valve s service port immediatelv and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 6 5 Adding the refrigerant after running the svstem for manv vears Indoor uni Liquid EN j T E 2 way valve Outdoor unit U j M m ssWs V V w N x Pd Z 3 way valve N f N Charging cylinder V Electronic scale Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the charge hose to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the char
29. r T1 T2 T3 and 4 sensor 26 5 slo s 5 Table 2 Some frequentiv used data for 5 sensor 5 s Resistance value Temperature 49 Spec 270033100129 270033100128 270033100156 270033100157 TER MSC 30HRDN1 M MSC 36HRDN1 MN5 MSC 28CRDN1 MN1 MSC 36CRDN1 MN5 ode POW W oW Compressor DA25082C 30MT TNB306FPGMC L DA25082C 30MT TNB306FPGMC L Indoor fan YDK65 4B YDK65 4B YDK65 4B YDK65 4B motor Outdoor fan YDK53 6NB YDK180 8GB YDK53 6NB YDK180 8GB motor 50 2 Compressor checking Measure the resistance value of each winding using the tester we 3 gt BN Input Terminal N N Blue 4 Red j2 11 ass Black 3 CO o J N Red DA250S2C 30MT TNB306FPGMC L Red 0 550 0 530 20 20 C Red 3 Indoor AC Fan Motor Measure the resistance value of each winding bv using the tester Input Terminal ack kl Blue Brown Yellow Red Black Brown Position Resistance Value Black Red 810 8 20 C Red Yellow 75 50 8 20 C Yellow Blue 75 50 8 20 C 51
30. reserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property B Donot block the inlet or outlet of air flow It may cause product failure B Usea soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product B Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury B Do not step or put anything on the product outdoor units There is risk of personal injury and failure of product B Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage B Do not insert hands or other object through air inlet or outlet while the product is operated There are sharp and moving parts that could cause personal injury B Donot drink the water drained from the product 4 It is not sanitary could cause serious health issues B Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury B Replace the all batteries in the remote control with new ones of the same type Do not mix old and mew batteries or different types of batteries There is risk of fire or explosion B not recharge or
31. sing ECONOMIC or SLEEP button on controller the machine will turn into sleep mode When cooling the setting temperature rises 1 C be lower than 30 C everv one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed 8 4 8 3 Timer setting is available 8 4 8 4 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode 8 4 9 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including Swing function automatically after 3 minutes when power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and turn to auto mode as 24 C setting temp If A C is off before power off and AC is required to start up now the compressor will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when restarts 8 4 10 Two speeds outdoor fan function 8 4 10 1 Outdoor fan starts at the same time with compressor but stops 30 seconds later after compressor stop 8 4 10
32. stem rises Operating current rises Cooling or heating efficiencv drops Moisture in the refrigerant circuit mav freeze and block capillarv tubing Water lead to corrosion of parts in the refrigerant svstem Therefore the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the svstem Gas leak check Soap water method Applv soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump Indoor unit Outdoor unit Liquid side OY PEN gt a a 1 Close PUER 1 Three way valve Manifold Mm Close Compound y XN P lt Pressure B 0 1 a Handle Lo Handle Hi Charge ue Charge hose of Vacuum D O pump TN SS Em M 7 Vacuum pump l 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 and 3 way valves are set
33. tall the unit by yourself customer There is risk of fire electric shock explosion or injury B Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and evaporator B Forinstallation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury B Donotinstall the product on a defective installation stand It may cause injury accident or damage to the product B Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury B Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense and wet or damage furniture B Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock B Do not place anything on the power cable There is risk of fire or electric shock B Donot plug or unplug the power supply plug during operation There is risk of fire or electric shock B Do not touch operation the product with wet hands There is risk of fire or electric shock B Do not place a heater or other appliance near the power cable There is risk of fire and electric shock B Do not allow water to run into
34. te control is available 8 4 6 3 In forced operation mode all general protections is available 8 4 6 4 The compressor runs at F2 frequency and indoor fan runs as breeze After running for 30 minutes the machine will turn to auto mode as 24 C setting temperature 8 4 6 5 The action of forced auto mode is the same as normal auto mode which temperature is 24 C First press 55 Press once Forced auto gt Forced cooling Press once 8 4 7 Timer function 8 4 7 1 Timing range is 24 hours and the minimum resolution is 15 minutes 8 4 7 2 Timer on After turning off the machine will turn on automatically when reaching the setting time 8 4 7 3 Timer off After turning on the machine will turn off automatically when reaching the setting 3 time 8 4 7 4 Timer on off After turning off the machine will turn on automatically when reaching the setting time and then turn off automaticallv when reaching the setting off time 8 4 7 5 Timer off on After turning on the machine will turn off automaticallv when reaching the setting Off time and then turn on automatically when reaching the setting on time 8 4 7 6 The setting time is relative time 8 4 7 7 The tolerance of timer is 1 minute per hour 8 4 8 Sleep function mode 8 4 8 1 Operation time in sleep mode is 7 hours After 7 hours the quits this mode and turns off 8 4 8 2 Operation process in sleep mode is as follow After pres
35. ter the defrosting mode Condition 3 No matter what value T4 is if the machine runs with T3 lt 3 C for more than 120 minutes and T3 keeps lower than 4 C for more than 3 minutes the machine will defrost no matter if T2 drops for more than 5 C or not Condition of ending defrosting If any one of following items is satisfied defrosting will finish and the machine will turn to normal heating mode T3 rises to be higher than 15 C T3 rises to be higher than 8 C and remains for 80 seconds The machine has run for 10 minutes in defrosting 34 The defrosting action XX 60 Compressor 4 way valve Outdoor fan Indoor fan off on off on off on off Frequency F2 _FrequencyF8 Indoor fan breeze 10s 10s no longer than 10m 305 35 8 4 3 5 High evaporator coil temp T2 protection 1 T2 gt 53 C compressor running frequency decreases to the lower level and runs for 205 When the frequencv decreases to F2 and the 2 exceeds 53 for 3 minutes the compressor will stop 2 If T2 lt 48 C or 2 stays in 48 C 53 C for 6 minutes the frequency will not be limited by 2 3 If T2 gt 60 C the compressor will stop and restart when T2 lt 48 C 8 4 4 Drving mode 8 4 4 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as cooling mode 8 4 4 2 Compressor running rules
36. tes the compressor frequencv will rise to the higher level frequencv increases twice at most 8 4 3 2 Outdoor fan running rules TA 4 C Low 17 15 High 8 4 3 3 Indoor fan running rules 44 38 setting fan speed low fan 34 33 Evaporator temp breeze 24 if R 1 super breeze tan stop If the compressor stops caused bv room temperature rising indoor fan will be forced to run 127 seconds with breeze During this period anti cold wind is disabled After this anti cold wind function is available If the machine runs in rating capacitv test mode indoor fan runs with rating speed and anti cold wind 5 disabled Indoor fan speed can be set as high medium low or auto grade but anti cold wind function is preferential 33 The auto fan action in heating mode setting Temp AL room temp 8 4 3 4 Defrosting mode The condition of defrosting Condition 1 If T4 gt 0 C When the units are running if the following two items are satisfied the units start defrosting The units runs with T3 lt 3 C for 40 minutes and T3 keeps lower than 6 C for more than 3 minutes The units runs with T3 lt 3 C for 80 minutes and T3 keeps lower than 4 C for more than 3 minutes Condition 2 If T4 lt 0 C The program judges according to the condition 1 if the two items are satisfied then judges if T2 has decreased for more than 5 C When T2 has decreased for more than 5 C en
37. urrent frequencv G Decrease the frequency to the lower level until to F1 H Run at F1 for 1h if T1 Ts lt 2 C compressor will stop Meanwhile the compressor running frequency is limited the current Current A l Compressor off I Frequency decrease Frequency hold Normal operation Off Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency Note When AC is in hold zone for 3 minutes the compressor frequency will rise to the higher level The frequency will increase twice at most 8 4 2 2 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto Auto fan in cooling mode acts as follow Room temp Setting temp high medium 30 8 4 2 3 Condenser high temperature T3 protection When 55 C lt T3 lt 60 C the compressor frequency will decrease to the lower level until to F1 and then runs at F1 When T3 lt 54 C the compressor will keep running at the current frequency When lt 52 the compressor will not limit the frequency and resume to the former frequency When T3 gt 60 C for 5 seconds the compressor will stop until T3 lt 52 C 8 4 2 4 Evaporator low temperature T2 protection When T2 lt 0 C the compressor will stop and restart
Download Pdf Manuals
Related Search