SERVICE MANUAL
Contents
1. ee td fe qo PI De Det Ande baad dads sisa nima rien 28 822 Mimer iei eR 29 8 13 Sleep function mode SOS Sasu Q 29 8 14 Auto Rest rt TUNCHOM ua n u uuu a nu kunun 29 8 15 lonizer Plasma dust collector 30 9 Troubleshooting nuvi saarinen venen eneen inerte nn eren tun tu o ra n nn ru un ne de va Pu Eu Fa eua no na uuu cine 31 Indoor Unit Error Display x n iie Sir cete eei cond cha hse plein Deci A en beet eats Ma Eee hatte ek 32 9 2 Diagnosis and Sol tlon e levet Ee derden den dete deni nen dee de ede 33 9 3 Key parts checking uu eeu tere eR ERR EE MEAS ua a au au 36 1 Precaution 1 4 Safety Precaution W 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 W Before service unit be sure to read this service manual at first 1 2 Warning Installation m Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock W Forelectrical work contact the dealer seller a qualified electrician or an Authorized service center Do not disassem2. eh alee eee eee Doe pipe 12 7 3 Pipe length and the elevation a einn tenen nnns 12 7 4 Air purging of the piping and indoor unit 12 7 5 Pumping down Re installation oe tees one cde ee IERI D Dre s Se 14 7 6 Re air purging 15 7 7 Balance refrigerant of the 2 way 3 way 16 7 8 2E yas 17 7 9 Gas charginga eene bt esr ee m usia a eed 18 8 Electronic function P 19 Abbreviation n deo D tme tete uq ni mette iei 19 9 2 Display UNCON desis ee eei if ee hene ge c ta DRE t UN E See eed ee 19 8 9 Protection m ERE 20 8 4 Fan Only Mode reete e ua ua deine dede idee od ecd ge debe Ee eese dence ede Pee dada da 21 9 5 eto METER 21 8 6 BIeieiici 22 ONE Heating MOde EET 24 8 8 Auto mode T hction ee e i E Ree Fee ee PSOE eine ee ayes 28 8 9 Forced operation function su u uuu uu unn tu 28 9 10 Action of 4 way dde tig i eiie Sans a S aS 28 9 11 Two speeds outdoor fan fu riction 5
3. s Bg 7 5 E ac E EIE ci m TEE Em 8 E 11 7 Installation details 7 1 Wrench torque sheet for installation Outside diameter 7 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Te 7 3 Pipe length and the elevation Pipe size Standard Max Additional Capacity Elevation refrigerant Btu h B m g m Indoor unit Indoor unit Outdoor unit Caution Capacity is base on standard length and maximum allowance length is base of reliability Oil trap should be installed per 5 7 meters 7 4 Air purging of the piping and indoor unit Required tools Hexagonal wrench adjustable wrench torque wrenches wrench to hold the joints and gas leak detector Note The air in the indoor unit and in the piping must be purged If air remains in the refrigeration piping it will affect the compressor reduce the cooling capacity and could lead to a malfunction of unit Be sure using a torque wrench to tighten the service port cap after using the service port so that it prevents the gas 12 leakage from the refrigeration cycle Indoor unit YT ZN Liquid side C WE OK 0 OPEN 2 way C valve S DN Gas side m Procedure Caution 1 Recheck the piping connections If gas leakage is discovered in step
4. not resume until the exhaust temp is lower than 90 C Inverter module Protection Inverter module Protection itself has a protection function against current voltage and temperature If these protections happened the corresponding code will display on indoor unit LED Sensor protection at open circuit and breaking disconnection Fan Speed is out of control When Indoor Fan Speed is too low lower than 300RPM for 60 seconds the unit stops and LED displays failure information and can t return to normal operation automatically Cross Zero signal error warning If there are 20 alternations of Cross Zero signals are incorrect the unit stops and LED displays failure information After resuming the motor rotates again The spacing of Cross Zero signal is 6 13ms Indoor fan delayed open function 8 3 10 For all modes when the units are turned on the indoor fan can operate 10 seconds after the action of louver 8 3 11 Compressor preheating function 1 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 2 Preheating mode A weak current flows through the coil of compressor from the wiring terminal of compressor then the compressor is heated without operation 3 Preheating release condition If T4 gt 5 C or user turns on the machine and compressor runs p
5. Speed hi mi lo 1260 1210 1120 1020 Indoor air flow Hi Mi Lo 1150 1080 960 Indoor noise level Hi Mi Lo 48 45 41 Dimension W H D 1080 330 225 Indoor unit Packing W H D 1165 445 320 Net Gross weight 15 5 20 5 Model YDK53 6N Brand Welling Outdoor fan motor Input 144 102 Capacitor 2 5 Speed 780 600 Outdoor air flow 3000 2200 Outdoor noise level 58 Dimension W H D 895 860 330 Outdoor unit Packing W H D 1043 915 395 Net Gross weight 64 70 Refrigerant type R410A 2100 Liquid side Gas side 9 52 16 0 Refrigerant piping Max refrigerant pipe length 25 Max difference in level 10 Operation temp 17 30 Ambient temp 15 50 The above design and specifications are subject to change without prior notice for product improvement 5 Refrigerant cycle diagram SNILV3H SNIIOOO I8poN 3NT1VA H3SN3QNOO 3ONVHOX3 38 l Adv Tlldvo epo FATWA HOOGLNO 305 dinon HOLVHOdV 3 3SNVHOX3 LINN HOOQNI 6 Wiring diagram 6 1 Indoor Unit ISM H24CODC INDOOR WIRING DIAGRAM ONS 138 0861 341 RUD 10 6 2 Outdoor Unit ISM H24CODC meer HEATER P ix T Leisa REACTORS 81502 Xie Eg em i
6. is discharged too suddenly the refrigeration oil sill be discharged 16 7 8 Evacuation Indoor unit ZZ Liquid side vl 7 2 way valve am Ju Open Gas side KY s 3 way valve Open ZA 2 Lela nr Vacuum pump d Ee E ____ Procedure 1 Connect the vacuum pump to the charge set s centre hose 2 Evacuation for approximately one hour Confirm that the gauge needle has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 3 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 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil if the vacuum pump oil becomes dirty or depleted replenish as needle 17 7 9 Gas charging sap Indoor unit TZAN Liquid side e Outdoor unit y valv Z valve TT gt y A WA N Check valve 9267 222 4 Charging cylinder zr j Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder 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
7. 3 above take the 2 Open the valve stem of the 2 way valve following measures counterclockwise approximately 90 wait 10 If the leaks stop when the piping connections are seconds and then set it to closed position tightened further continue working from step 4 Be sure to use a hexagonal wrench to operate the If the gas leaks do not stop when the connections are valve stem retightened repair the location of the leak discharge all 3 Check for gas leakage of the gas through the service port and then recharge Check the flare connection for gas leakage with the specified amount of gas from a gas cylinder 4 Purge the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute 5 Use torque wrench to tighten the service port cap to a torque of 1 8 kgf m 18N m 6 Set the 3 way valve to the opened position 7 Mounted the valve stem nuts to the 2 way and 3 way valves 8 Check for gas leakage At this time especially check for gas leakage from the 2 way and 3 way stem nuts and from the service port 13 7 5 Pumping down Re installation valve Liquid side a Outdoor unit 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
8. 5 4 Rating capacity test function 1 Setthe indoor unit with remote controller as high fan 17 C in cooling mode then press TURBO button on controller 6 times or more within 10 seconds make sure indoor unit receives these signals the machine will turn into rating capacity test mode the buzzer will make a di sound for 2 seconds continuously Also indoor fan will change to rating speed the frequency of compressor will be fixed as rating value Any condition of above is not satisfied the machine can not be turned into rating capacity test mode 2 The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting temperature 8 5 5 Turbo function press the TURBO button on remote controller 1 Elevate current frequency to a higher grade 2 Indoor fan turns to turbo speed 3 After running for 30 minutes the machine will turn back to previous setting mode 8 5 6 Indoor fan operation rule 1 In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto 2 Auto fan in cooling mode acts as follow 40 sei 3 0 medium 1 5 1 0 oom temp setting Temp AT 8 5 7 Condenser high temperature protection function in cooling and drying mode If T3 gt 60 C for 5 seconds compressor will stop immediately and the machine will not resume until T3 lt 52 C 8 6 Drying mode 8 6 1 Indoor fan speed is fixe
9. 8 12 5 8 12 6 Timing range is 24 hours and the minimum resolution is 15 minutes Timer on After turning off the machine will turn on automatically when reaching the setting time Timer off After turning on the machine will turn off automatically when reaching the setting time Timer on off After turning off the machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time Timer off on After turning on the machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time The tolerance of Timer is 1 minute per hour 8 13 Sleep function mode 8 13 1 8 13 2 8 13 3 8 13 4 8 13 5 Operation time in sleep mode is 7 hours After 7 hours the machine quits this mode and turns off In cooling heating or auto mode sleep function is available Operation process in sleep mode is as follow 1 After pressing ECONOMIC or SLEEP button on controller the machine will turn into sleep mode 2 When cooling the setting temperature rises 1 C be lower than 30 C every one hour 2 hour later the rising stops and indoor fan is fixed as low speed 3 When heating the setting temperature descends 1 C be lower than 30 C every one hour 2 hour later the descending stops and indoor fan is fixed as low speed and anti cold wind is available If user uses timer on function in sleep
10. Do not 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 W When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock W Be caution that water could not enter the product There is risk of fire electric shock or product damage W Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock W Turn the main power off when cleaning or maintaining the product There is risk of electric shock m 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 W 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 W Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product W install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage W Keep level even when installing the product To avoid vibration of water leakage W Do not install the product where the noise or hot air from the outdoor unit could damage the neighbor
11. ED4 red on outdoor PCB bright and LED1 yellow blinking Replace indoor PCB and repower on Is the failure cleared The power supply for outdoor PCB is fail Check the wiring on outdoor PCB comparing with wiring plate Is the connection good No Correct the connection Replace outdoor e box 9 2 3 E2 zero crossing signal error diagnosis and solution Is power supply and Be sure the power supply is good connection of connectors and correct the connection good Indoor PCB is defective Replace the indoor PCB 33 9 2 4 fan speed out of control diagnosis and solution Is the indoor fan motor connector and connection good Repair the connector and reconnect Is voltage being applied to the fan motor Indoor PCB is defective rang 90v 160v between Replace the indoor PCB mid pin and N on CN1 Replace the indoor fan motor 9 2 5 5 or short circuit of outdoor temperature sensor diagnosis and solution Is the outdoor temperature sensor connector and connection good Replace the sensor and Replace outdoor e box check if E5 display again 9 2 6 E6 open or short circuit of room or evaporator temperature sensor diagnosis and solution Repair the connector and reconnect Is the indoor temperature and evaporator sensor connector and connection good Replace the sensor and Repla
12. Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant if can be charged with a little at a time approximately 150g each time0 while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the refrigerant to be discharged If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose Mounted 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 18 8 Electronic function 8 1 Abbreviation T1 Indoor ambient temperature T2 Pipe temperature of indoor heat exchanger T3 Pipe temperature of outdoor heat exchanger T4 Outdoor ambient temperature 8 2 Display function 8 2 1 Icon explanation on indoor display board Signal receptor FE FREQUENCY gt 6 ISM H24CODC Auto indicator This indicator illuminates when the air conditioner is in AUTO operation Q Timer indicator This indicator illuminates when TIMER is set ON OFF PRE DEF Indicator This indicator illuminates when the air conditioner starts def
13. air SERVICE MANUAL AirQ AIRCONDITIONER DC INVERTER SPLIT WALL MOUNTED TYPE ISM H24CODC Jan 2008 CONTENTS 1 M 1 1 1 SSatety PrecautlObi 2 tne ent er duct i ha Ede cut Le ee ue Eo E Eo 1 1 2 REC AL 1 Egan E 4 DIMENSION PLE 6 Melodie EUN 6 ISM H24 CODO REG B NU ERU EAT NT I e needs 6 ans 6 3 2 Outdoor Unit znne e e de a Reb d neo Nu a 7 ISM H24 GCODG s Em 7 4 H 8 5 Refrigerant cycle diagram rene teneret U u u Ran u uu 9 6 Wiring LACT AIM u A EA 10 6 1 ln 1 iet a epiac od e AERE 10 ESL il SKO DOSEREN B d Nie zdefiniowano zaktadki 6 2 Outdoor LEE 11 ISM H24CODO Na ie e Ce es 11 7 Installation detallS 5 III ayasa serrer ne coner no gewaden ie nwd aande a e 12 7 1 Wrench torque sheet for installation a 12 7 2
14. ble or repair the product there is risk of fire or electric shock W Always ground the product There is risk of fire or electric shock E Install the panel and the cover of control box securely There is risk of fire of electric shock W Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock W Use the correctly rated breaker of fuse There is risk of fire or electric shock W Do not modify or extend the power cable There is risk of fire or electric shock m Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury W 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 W Forinstallation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury m Do not install the product on a defective installation stand It may cause injury accident or damage to the product m 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 m 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 fu
15. ce the indoor PCB check if E6 display again 9 2 7 PO IGBT over strong current protection diagnosis and solution Repair the connector and reconnect Is all connections on PCB and between PCB and compressor good Repair or correct the connector or connection Replace the outdoor PCB and then repower on Is Check the compressor the failure cleared 9 2 8 P1 over voltage too low voltage protection diagnosis and solution Is the power supply good Be sure the power supply is normal when using the units YES Replace the outdoor e box 9 2 9 P2 temperature protection of compressor top diagnosis and solution Does compressor lS the connection Reconnect and retest operate good YES Is refrigerant Is protector circulation normal volume normal Charge refrigerant Is abnormality the same after gas charging Replace the protector Check the outdoor main PCB Is there some problem Replace the outdoor PCB Check refrigerant system such as clogging of capillary etc 9 2 10 P4 inverter compressor drive error diagnosis and solution a Reconnect and retry Is the connection of compressor good Is the wiring sequence right The voltage range proper Replace the outdoor E box If the problem comes to again check coil resistance of inverter compressor is it 0 668ohm Replace invert
16. cuit in outdoor unit even shut down the power supply electricity power still are kept in capacitors do not forget to discharge the electricity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION Bulb 25 40W 31 9 1 Indoor Unit Error Display Display LED STATUS EO EEPROM parameter error E1 Indoor outdoor units communication protection E2 Zero crossing signal error E3 Fan speed out of control E5 Open or short circuit of outdoor temperature sensor E6 Open or short circuit of room or evaporator temperature sensor PO IGBT over strong current protection P1 Over voltage or too low voltage protection P2 Temperature protection of compressor top P4 Note E4 amp P3 Inverter compressor drive error Reserved function 32 9 2 Diagnosis and Solution 9 2 1 EO EEPROM parameter error error diagnosis and solution Circuit or software error on indoor PCB Replace indoor PCB 9 2 2 1 outdoor units communication protection error diagnosis and solution Disconnect the power supply after 1 minute connect the power supply turn on the unit with remote controller Does the unit work normally Check the wiring between indoor and outdoor unit Is the connection of L N S and GND good Is the GND connection on outdoor PCB good Reconnect and retest again Is the L
17. d at breeze grade and can t be changed The horizontal angle is the same as in cooling mode 8 6 2 Room overlow temperature protection In drying mode if room temperature is lower than 10 C compressor will stop and not resume until room temperature climbs up to 12 C 8 6 3 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are valid and they are the same as that in cooling mode 22 8 6 4 Horizontal louver action is the same as that in cooling mode 23 8 7 Heating mode 8 7 1 Indoor fan action 1 Anti cold wind function 44 38 37 setting fan speed 34 33 Evaporator temp A fan stop 2 If the compressor stops caused by 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 3 f the machine runs in rating capacity test mode indoor fan runs with rating speed and anti cold wind is disabled 8 7 2 Indoor fan speed can be set as high medium low or auto grade but anti cold wind function is preferential Auto fan action in heating mode 2 5 2 0 E 1 5 medium g E 10 fH Q 2 AT 8 7 3 After starting the operation frequency of compressor submits to following rule room temp setting Temp ATcon ATh Remark can be changed amon
18. ding F8 to a higher grade If indoor fan is in low speed or pause caused by defrosting or anti cold wind function frequency of compressor will not be elevated one grade until these limit has been released 1 Indoor fan changes to turbo speed and anti cold wind function is valid 2 After running for 30 minutes the machine will turn back to previous setting mode 27 8 8 Auto mode function 8 8 1 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 heating or fan only mode according to AT AT T1 Ts Cooling AT gt 1 C Heating 1SATS1 C Fan only AT lt 1 C 8 8 2 Indoor fan will choose auto speed of relevant mode 8 8 3 If the machine switches mode between heating and cooling compressor will keep stopping for 15 minutes and then rechoose mode according to AT 8 8 4 Ifthe setting temperature is modified the machine will rechoose running function 8 9 Forced operation function 8 9 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 9 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 pr
19. e machine runs with T3 lt 3 C for more than 120 minutes and T3 keeps lower than 2 C for more than 3 minutes the machine will defrost no matter if T2 drops for more than 5 C or not 2 Condition of ending defrosting If any one of following items is satisfied defrosting will finish and the machine will turn to normal heating mode 25 8 7 7 rises to be higher than 12 C b T3rises to be higher than 8 C and remains for 80 seconds c The machine has run for 10 minutes in defrosting Defrosting action compressor 4 way valve outdoor fan indoor fan indoor fan breeze 10s gt lt 90s longer than 10 minutes 305 8 7 8 Rating capacity test function 1 Set the indoor unit with remote controller as high fan 30 C in heating mode then press TURBO button on controller 6 times or more within 10 seconds make sure indoor unit receives these signals the machine will turn into rating capacity test mode the buzzer will make a di sound for 2 seconds continuously Also indoor fan will change to rating speed the frequency of compressor will be fixed as rating value Any condition of above is not satisfied the machine can not be turned into rating capacity test mode 2 The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting temperature 8 7 9 Turbo function in heating mode 26 Elevate current frequency exclu
20. er compressor 35 9 3 Key parts checking 9 3 1 Compressor checking Model C 6RZ146H1A Measure the resistance value of each winding by using the multi meter InputTerminal R Blue 4 1 2 Blue Red Red 2 Blue Black ACS Black Black 3 Ves 1 Red Blue N Red SS 9 3 2 Outdoor Fan Motor Model YDK53 6N Measure the resistance value of each winding by using the multi meter Resistance Value Red 1130 200 Red Yellow 1930 201 36 9 3 4 Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor exhaust temp Te sensor Measure the resistance value of each winding by using the multi meter Some frequently used R T data for T1 T2 T3 and T4 sensor Tempero s o s m 9 5 FResstace vane 9 207 26 s 52 ss 24 Some frequently used R T data for Te sensor emme s s zs 9 Reseance Vale 1416 ee 57 eo 5 jar 37
21. ert 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 m Do not drink the water drained from the product It is not sanitary could cause serious health issues W Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury W 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 W Do notrecharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode m If the liquid from the batteries gets onto your skin or clothes wash it well with clean The chemical in batteries could cause burns or other water Do not use the remote of the batteries health hazards have leaked 2 Function Operation by remote controller Sensing by room temperature Room temperature sensor Pipe temperature sensor Room temperature control Maintain the room temperature in accordance with the setting temperature Anti freezing control in cooling Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode lonizer Optional Time Delay Safety control Restarting is for approx 3 minutes Plasma Optional Indoor fan speed control Turbo wind high med low breeze Tele Remote control Optiona
22. es After purging the air use a torque wrench to tighten the flare nut to 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 cylinder and discharge the refrigerant 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 15 7 7 Balance refrigerant of the 2 way 3 way valves Outdoor unit 2 way valve Gas side Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position 2 Connect the charge set to the 3 way valve s service port Leave the valve on the charge set closed Connect the charge hose with the push pin to the service port 3 Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1Mpa If there is no air in the refrigeration cycle the pressure when the air conditioner is not running is higher than 0 1Mpa discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If this is the case it will not be necessary to apply a evacuation Discharge the refrigeration gradually if it
23. essing touch button will turn off the machine In forced operaton remote control is available 8 8 3 In forced operation mode all general protections is available 8 8 4 forced cooling mode after running for 30 minutes the machine will turn to normal auto mode which setting temperature is 24 C 8 8 5 The action of forced auto mode is the same as normal auto mode which temperature is 24 C 8 10 Action of 4 way valve In cooling drying fan only or turning off mode 4 way valve is off while in heating mode 4 way valve is on If the machine changes operation mode from heating mode to some other mode 4 way valve will be delayed off 2 minutes after compressor stop For defrosting please refer to the passage defrosting mode 8 11 Two speeds outdoor fan function 8 11 1 Outdoor fan starts at the same time with compressor but stops 30 seconds later after compressor stop 8 11 2 Outdoor fan action in heating mode including heating in auto mode 28 8 11 3 g 5 9 5 a a o o c E c 9 5 2 5 5 5 5 S S S g 5 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 Outdoor fan action in cooling amp drying mode including cooling in auto amp forced mode Please refer to the pic above 8 12 Timer function 8 12 1 8 12 2 8 12 3 8 12 4
24. g 0 2 40 the default is 00 When the machine runs if ATh stays in a zone for 3 minutes action of frequency is as follow Zone A Elevate current frequency one grade and not stop until the maximum grade Zone B Elevate or keep or descend current frequency 24 Zone H Compressor stops after running with F1 for 60 minutes or when ATh gt 6 C 8 7 4 Outdoor unit current control in heating mode comp pause freq descends if curr rises I2HEAT freq remains if curr descends outdoor unit current MHEAT 4 running normally Remark 8 7 5 Indoor heat exchanger high temperature protection If T2 gt 60 C the compressor will stop and not resume until T2 lt 48 C 9 7 6 Defrosting mode 1 Condition of defrosting Condition 1 If T4 0 When the units are running if the following two items are satisfied the units start defrosting a The units runs with lt 3 C for 40 minutes and keeps lower than 6 C for more than 3 minutes b units runs with lt 3 C for 80 minutes and 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 descended for more than 5 C if it has the machine starts defrosting or continues to judge T2 and will not defrost until T2 drops more than 5 C Condition 3 No matter what value T4 is if th
25. hoods It may cause a problem for your neighbors B Use two or more people to lift and transport the product Avoid personal injury W Do 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 gt Operational W Do 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 W Do notuse the product for special purposes such as preserving 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 W Do not block the inlet or outlet of air flow It may cause product failure W Use a 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 W Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury W Do not step on pr put anything on the product outdoor units There is risk of personal injury and failure of product W 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 W Do not ins
26. l Two direction air vane The unit will decide the louver direction according to Work voltage 160V 253V 2 3 Sleep mode auto control Self diag function The fan is turn to low speed cooling heating The unit will be turn off at the seventh hour Anti cold function Independent dehumidification Prev nt ihe cola beginning of unit start The function is usually used in rainy days in springtime or damp areas Auto defrost Air flow Direction control The louver can be set at the desired position or swing up and down automatically Auto restart function When the power supply is interrupted and then restore the air conditioners automatically restore The mode can be change by the room temperature the previous function setting Temp Compensation Flexible wiring connection Outdoor unit Power relay control The unit has 3 mins delay between continuously ON OFF operations Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode 4 way valve control It is only operated in the heating operation mode except defrosting operation Anti rust cabinet Made from electrolytic zinc steel sheet and anti rust coated components Valve protection cover It protects the valves and prevents water from dripping Discharge pipe temperat
27. mode sleep function will pause and not resume until reaches the setting on time When user uses timer off function in sleep mode or sleep function in timer off mode if the timing time is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing time is more than 7 hours the machine will not stop until reaches the setting off time in sleep mode 8 14 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 restores the setting conditions before the power failure The unit will resume the previous operation setting including Mode Fan speed Temperature ON OFF automatically after 3 minutes when power returns 29 8 15 lonizerlPlasma dust collector function optional The indoor unit is equipped with lonizer which is controlled by the CLEAN AIR button on the remote controller when the unit is turned on Press the CLEAN AIR button to activate the function Press it again to stop the function During the time when lonizer being controlled by remote controller lonizer will be turned off automatically if indoor fan stops running due to malfunctions or anti cold wind When indoor fan restarts after malfunctions being eliminated and anti cold wind being released lonizer will be available again 30 9 Troubleshooting Safety Because of there are capacitors in PCB and relative cir
28. reheating function will stop 20 8 4 Fan Only Mode 8 4 1 Temperature setting function is disabled and no setting temperature display 8 4 2 In this mode the action of louver is the same as in cooling mode 8 4 3 The action of auto fan in fan only mode is the same as auto fan in cooling mode with 24 C setting temperature high 3 5 4 3 0 medium 1 5 T1 24 1 0 8 5 Cooling Mode 8 5 1 After starting the operation frequency of compressor submits to following rule room temp setting Temp AT When the machine is running and AT room temp setting temp changes the frequency of compressor will rise or descend a grade 7 minutes after starting After start if AT stays in a zone for 3 minutes the frequency will change as follow Zone A Current frequency rise a grade till the maximum grade Zone B Elevate or keep or descend the frequency of compressor Zone H Compressor stops after running as the minimum frequency for 60 minutes or AT is less than 2 C 8 5 2 Indoor heat exchanger anti freezing function If T2 is lower than 0 C the compressor stops and resumes when 2 gt 5 8 5 3 Outdoor unit current control in cooling mode refer to the parameter table comp pause I3COOL freq descends if curr rises I2COOL freq remains if curr descends outdoor unit current HCOOL 4 running normally Remark 21 ISM H24CODC 11A 12A 13A 8
29. rniture m Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock W Do not place anything on the power cable There is risk of fire or electric shock W Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock W Do not touch operation the product with wet hands There is risk of fire or electric shock W Do not place a heater or other appliance near the power cable There is risk of fire and electric shock m Do not allow water to run into electric parts It may cause fire failure of the product or electric shock W Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product m Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur m 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 m If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire m Stop operation and close the window 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
30. rosting automatically or when the warm air control feature is activated in heating mode 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 19 8 2 2 is 0 50 When the unit stops operation it returns to original factory settings Displays the malfunction code or protection code Frequency indicator This indicator appears only when the compressor is in operation and indicates the current operating frequency LED display control function Pressing LED display button on remote controller will turn off all displays on indoor unit while pressing once again all displays will resume 8 3 Protection 8 3 1 8 3 2 8 3 3 8 3 4 8 3 5 8 3 6 8 3 7 8 3 8 8 3 9 Three Minutes Delay at restart for compressor Temperature protection of compressor top If the temperature of compressor top is too high higher than 115 C and the Over load Protector is cut the units stop When the Over load Protector restore and close lower than 100 C the compressor will restart in this case the compressor is restricted by Three Minutes Delay protection Temperature protection of compressor exhaust If the exhaust temp of compressor is higher than 115 C and lasts for 5 seconds the compressor stops and does
31. stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems 2 Operate the unit for 10 to 15 minutes 3 Stop operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the gas service port 5 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose 6 Set the 2 way valve to the close position 7 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 8 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa Disconnect the charge set and amount the 2 way and 3 way valve s stem nuts and service port caps Use a torque wrench to tighten the service port cap to a torque of 1 8 kgf m Be sure to check for gas leakage 14 7 6 Re air purging Re installation Outdoor unit zz RN 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 tim
32. ure protect Driving heating at 150 3 Dimension 3 1 Indoor Unit ISM H24CODC 0000 3 2 Outdoor Unit ISM H24CODC 5 2 2 895 4 Specification Indoor ISM H24CODC Outdoor ISM H24CODC Power supply Ph V Hz 1 220 240V 50Hz Capacity Btu h 23000 7000 26000 Input 2250 620 2650 Rated current A 9 8 2 8 11 8 EER Btu w h w w 10 3 3 01 Capacity Btu h 24000 7500 28000 Input 2070 600 2600 Rated current A 9 0 2 6 11 6 COP W W 3 41 Moisture Removal 2 4 Cooling Heating Max input consumption 2700 Max current A 15 Starting current A 14 5 Model C 6RZ146H1A Type Rotary Brand SANYO Capacity 21905 Input 1630 Rated current RLA 8 38 Locked rotor Amp LRA 12 5 Thermal protector 1NT11L 3979 Capacitor No Compressor Refrigerant oil 350 Model YDK36 4C Brand Welling Indoor fan motor Input 74 70 62 55 Capacitor 3
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