Service manual for MSV1
Contents
1. LN mr 19 Blectronie fUMEHON x 20 OMNES ee 20 58 Display CHO rdnr poU 20 fase POET Ne 21 qd Fr NE s css le EE yi EROR PEE ees M onda E 21 OO ss 22 MOOO aaner 23 PUB AE 23 TMC MOU 27 759 EE DTE 27 410 FAN TANA VA anr nennen E A ane eeen ae 27 FAM Two Speeds outdoor anm See 27 22 AS 28 PAS SEE MOE E 28 res Auto Restart UNGI e 28 715 lonz Clean AN UG e c TP TE 29 1216 e 29 re FONTENE 29 CONTENTS 8 Troubleshooting 8 1 Indoor Unit Error Display 8 2 Diagnosis and Solution KG Parts eg ennen eee 36 1 Precaution 1 1 Safety 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 Installation B Do notuse a defective or underrated circuit breaker Use this ap2. 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 AN 31 8 1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error ITI m o Indoor outdoor units communication protection m Zero crossing signal error m Fan speed out of control Open or short circuit of outdoor temperature sensor m Open or short circuit of room or evaporator temperature sensor IGBT over strong current protection U Over voltage or too low voltage protection Temperature protection of compressor top U A Inverter compressor drive error Note 4 amp P3 Reserved function 32 8 2 Diagnosis and Solution 8 2 1 EO EEPROM parameter error error diagnosis and solution Circuit or software error on indoor PCB Replace indoor PCB 8 2 2 El1 indoor 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 NO 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 Yes Is the LED4 red on outdoor PCB bright and LED1 yellow blinking No
3. 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 8 2 3 E2 zero crossing signal error diagnosis and solution Is power supply and connection of connectors good NO Yes Reconnect and retest again Replace indoor PCB and repower on Is the failure cleared Replace outdoor e box Be sure the power supply is good and correct the connection Indoor PCB is defective Replace the indoor PCB 33 8 2 4 E3 indoor fan speed out of control diagnosis and solution Is the indoor fan motor Repair the connector and connector and connection M good Is voltage being applied to the fan motor Indoor PCB is defective Replace the indoor PCB Replace the indoor fan motor rang 90v 160v between 8 2 5 5 or short circuit of outdoor temperature sensor diagnosis and solution mid pin and N on CN1 Is the outdoor temperature Repair the connector and connection good reconnect Replace the eee and Replace outdoor e box check if E5 display again 8 2 6 E6 open or short circuit of room or evaporator temperature sensor diagnosis and solution Is the indoor temperature and evaporator sensor Repair the connector and connector and connection reconnect good Replace the sensor and Replace the indoor PCB check if E6 display again 8 2 7 PO IGBT over
4. Time Delay Safety control Restarting is for approx 3 minutes Indoor fan speed control Turbo wind high med low breeze Two direction air vane The unit will decide the louver direction according to Work voltage 160V 253V 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 D 2 3 o Independent dehumidification Prevent the cold wind at the beginning of unit start The function is usually used in rainy days in SADE 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
5. Midea Service Manual AIR CONDITIONER 3D DC Inverter Split Wall Mounted Type Website www mideaaircon com Vertu series Model Refrigerant type Power supply MSV1 18HRDN1 MQO R410A 230 208V 60Hz 1Ph MSV1 24HRDN1 MQO R410A 230 208V 60Hz 1Ph DEC 2009 Be Preah avse 1 ETL T 1 2 NAS 1 2 FUNCHON annan ie 4 3 DIMENSION Ja 6 ero EP 6 32 II EEUU 7 4 en 8 5 Wiring eec M 9 get UL ennen oaeen been ee 9 Rd 9 52 DOUG 10 For SK Mode 10 aerden hed 11 6 Installation 12 TEN ENN 12 6 2 Connecting NE Cables aa Eek 12 6 3 PP ehandel NG 12 6 4 Air purging of the piping INGOOF UN Harare 13 65 down FSA 15 Gib RE 16 6 7 Balance refrigerant of the 2 way 3 way 17 55 lesione EH ne dea 18 69
6. 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 19 7 Electronic function 7 1 Abbreviation T1 Indoor ambient temperature T2 Pipe temperature of indoor heat exchanger T3 Pipe temperature of outdoor heat exchanger T4 Outdoor ambient temperature 7 2 Display function 7 2 1 Icon explanation on indoor display board AMA NA a X OPERRATION indicator This indicator flashes after power is on and illuminates when the unit is in operation AUTO indicator This indicator illuminates when the air conditioner is in AUTO operation TIMER indicator This indicator illuminates when TIMER is set ON OFF IONIZER CLEAN AIR indication lamp Lights up when CLEAN AIR feature is activated and lonizer can generate abundant anions to fill the room with refreshing and natural air PRE DEF indicator This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode TURBO indication lamp Lights up when select TURBO function on cooling operation or on heating operation FREQUENCY indicator This indicator appears only when the compressor is in operation and indicates the current operating frequency TEMPERATURE indicator Usually it displays the temperature settings When change the setting temperature this indicator begins to f
7. REACTOR R6025 am _ REACTOR R1815 RED ORANGE tt p OUTDOOR WIRING DIAGRAM Dae YELLOW 10 For 24K Model En 71 HEAT DONER SENSOR OPTIONAL HEATER T EE Ka NER NA EE LU 1 E d OLP TEMP SENSORR AMBIENT SENDR RII Sz I WHITE Mii PT I PT oN WHITE OOS 44 HEATER 1 LU i anml 0 DISCHARGE SENSOR GNI4 Tm 7 4 on KK E w YELLOW W OUTDOOR MAIN V PCB T OT Rus H 44 Ct 1 Y G 9 ful SL 2 9 BLUE N TEL EL an 4 4 s du YIG cN28L LLI CN26 pr TO pem cm UNIT POWER SUPPLY 5 o an m c E OUTDOOR 2 YELLOW E 2 POW REACTOR R6025 ORANGE REAGTORT R1815 Jern REAGTORT R1815 RED AT X ORANGE BLUE BLUE OUTDOOR WIRING DIAGRAM 5e 11 6 Installation details 6 1 Tightening Connection Align the center of the pipes Sufficiently tighten the flare nut with fingers and then tighten it with a spanner and torque wrench as shown in Fig x Indoor unit tubing p Flare nut Pipings 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet 6 3 Pipe length and the elevation Capacity Btu h length Elevation refrigerant u Gas Liquid m B m A m g m Indoor unit Indoor unit Outdoor unit 12 Caution Capacity is base on standard length and maximum allowance length is ba
8. and anti rust coated components Valve protection cover It protects the valves and prevents water from dripping Discharge pipe temperature protect Driving heating at 15 3 Dimension 3 1 Indoor Unit 3 2 Outdoor Unit 4 Refrigerant cycle diagram INLLY3H HOSS3IHdNOD juo Bpo buneaH n HOLVT 2 EIE 3A TVA AME ONISH3A3H lt gt SE SE ESSE ES HISNIANOD JONVHOXI 1V3H 391 Adv Tildvo LOO NI L 000 pr Ex Ee jepoy 3015 anon 3A TVA e LINN HOOALNO HOLVHOdV A3 jONVH2X3 LINN HOOGNI 1 V3H 5 Wiring diagram 5 1 Indoor Unit For 18K 24K Model WIRING DIAGRAM nome mI ette E INDOOR UNIT d E ANTON E OD QD QD QD CONTROL TOP AR wd Fr IN LET LOUER 5 3 5 AAS FAN CAPACITOR BOARD Clem eat ee This symbol indicates the element RED WHITE Y G optional the actual shape shall de pee be prevail LI L2 S WAY TERMINAL erelelele INDOOR UNIT TO OUTDOOR UNIT DISPLAY BOARD 5 2 Outdoor Unit For 18K Model HEAT ELAN OPTIONAL HEATER zd I I I HEATER 2 MBIENT SENSOR RASS HEATER 2 WHITE 2 MEI ml REX D OG P 4 HEATER 1 KA D i1 n DISCHARGE SENSOR n OUTDOOR B BROWN BLUE i YIG hr COMPRESSOR vp TO mee UNIT SUPPLY IE 2 POW
9. for 30 minutes the machine will turn to normal auto mode which setting temperature is 24 C 7 7 5 The action of forced auto mode is the same as normal auto mode which temperature is 24 C 7 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 7 11 Two speeds outdoor fan function 7 11 1 Outdoor fan starts at the same time with compressor but stops 30 seconds later after compressor stop 7 11 2 Outdoor fan action in heating mode including heating in auto mode 27 5 z 5 9 8 gt gt E 2 D S S 2 g 5 5 3 3 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 7 11 3 Outdoor fan action in cooling amp drying mode including cooling in auto amp forced mode Please refer to the pic above 7 12 Timer function 7 12 1 Timing range is 24 hours and the minimum resolution is 15 minutes 7 12 2 Timer After turning off the machine will turn on automatically when reaching the setting time 7 12 3 Timer off After turning on the machine will turn off auto
10. of following items is satisfied defrosting will finish and the machine will turn to normal heating mode 25 T3 rises to be higher than 12 C b rises to be higher than 8 C and remains for 80 seconds c The machine has run for 10 minutes in defrosting 7 7 7 Defrosting action compressor 4 way valve outdoor fan indoor fan indoor fan breeze 10s 4 90s 1008 no longer than 10 minutes 30s 7 7 8 Rating capacity test function 1 Set the indoor unit with remote controller as high fan 30 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 7 7 9 Turbo function in heating mode Elevate current frequency excluding 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
11. ake 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 7 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 7 5 6 Indoor fan operation rule 1 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 medium oom temp setting Temp AT 7 5 7 Condenser high temperature protection function in cooling and drying mode If T3 gt 60 for 5 seconds compressor will stop immediately and the machine will not resume until 52 C 7 6 Drying mode 7 6 1 Indoor fan speed is fixed at breeze grade and can t be changed The horizontal angle is the same as in cooling mode 7 6 2 Room overlow temperature protection In drying mode if room temperature is lower than 10 C compressor will stop an
12. and anti cold wind function is valid 2 After running for 30 minutes the machine will turn back to previous setting mode 26 7 8 Auto mode function 7 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 AT T1 Ts Running mode Cooling AT gt 1 C Fan only 1 lt lt 1 Heating AT lt 1 C 7 8 2 Indoor fan will choose auto speed of relevant mode 7 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 7 8 4 If the setting temperature is modified the machine will rechoose running function 7 9 Forced operation function 7 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 7 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 pressing touch button will turn off the machine In forced operaton remote control is available 7 7 3 n forced operation mode all general protections is available 7 7 4 n forced cooling mode after running
13. cuum 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 18 6 9 Gas charging uam KE Indoor unit ZN Liquid side __ Outdoor unit L J ZA fm valve _ X Open TA Gas sida Check valve Charging cylinder 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 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 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 timeO 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 4 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 5
14. d not resume until room temperature climbs up to 12 C 7 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 7 6 4 Horizontal louver action is the same as that in cooling mode 7 7 Heating mode 7 7 1 Indoor fan action 1 Anti cold wind function 23 dd JO dr setting fan speed 34 33 Evaporator temp 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 7 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 medium T oom temp setting Temp lt 1 7 7 3 After starting the operation frequency of compressor submits to following rule room temp setting Temp ATcon ATh Remark ATcon can be changed among 0 2 40 the default is 0 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 o
15. duct failure and personal injury B Do notlet 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 Do not 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 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 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 B 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 B Stop operation and close
16. elled 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 7 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 28 7 15 lonizer Clean Air function 1 Clean Air function is available only when the aircon is on and it s controlled through remote controller 2 After the Aircon being turned on the Clean Air function is switched on when the aircon receives FRESH CODE at first time and ionizer is switched off when the aircon receives the CODE again It s a circle 3 After starting the Clean Air function the ionizer can work only when the indoor fan motor is running If the indoor fan motor is off the ionizer also stops working even though the Clean Air function is available 4 Switching the running mode will not stop the ionizer When turning off the aircon the ionizer is also turned off 7 16 Self clean function 1 Self clean function is chosen through wire jumper J2 in indoor PCB it s available when the unit has detected that J2 is on after getting through the power 2 Self Clean function is avai
17. ent from remote controller every 3 minutes the buzzer will not respond When the unit is running with follow me function the PCB will control the unit according to the temperature from follow me signal and the temperature collection function of room temperature sensor will be shielded but the error detective function of room temperature sensor will be still valid 3 When the follow me function is available the PCB will control the unit according to the room temperature from the remote controller and the setting temperature and the action of compressor is as following At cooling mode if TA TS compressor is off If TA2TS compressor is on At heating mode if TA TS compressor is off If TASTS compressor is on 4 The PCB will take action to the mode change information from remote controller signal but it will not affected by the setting temperature 5 When the unit is running with follow me function if the PCB doesn t receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again the follow me function will be turned off automatically and the temperature collection function of room temperature sensor will be available the PCB will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature 29 30 8 Troubleshooting Safety Because of there are capacitors in PCB and relative circuit in outdoor unit even shut down the power supply
18. er Input Terminal Blue lt Blue 4 lt Blue Red Red 2 MA Blue Black 4 Black N ud Black 3 4 Or NG Red Blue 8 3 2 Outdoor Fan Motor Model YDK53 6FB Measure the resistance value of each winding by using the multi meter Black Red 560 20 C Red Yellow 8 3 3 Outdoor Fan Motor Model YDK53 6NB 760 20 Measure the resistance value of each winding by using the multi meter Blue mM 7 EE Position Resistance Value Yellow Black Red 56 50 20 C Red Yellow 117 50 20 C 8 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 data for T1 T2 and T4 sensor s m s m w 9 oe 36 Resne Ka zs 207 161 s 52 ss 24 Some frequently used R T data for Te sensor NN rrr 141 6 Resistance Value KO 88 561 366 138 87 69 5 137 9 37
19. er 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 Do not drink the water drained from the product 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 Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode B 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
20. gas leakage is discovered in step 3 above take the Using the hexagonal wrench to press the valve following measures core pin discharge for three seconds and then wait If the leaks stop when the piping connections are 13 tightened further continue working from step 4 If the gas leaks do not stop when the connections are retightened repair the location of the leak discharge all of the gas through the service port and then recharge with the specified amount of gas from a gas cylinder 14 6 5 Pumping down Re installation Outdoor unit l 2 Way vie X Gas side 2 L Procedure 1 N Confirm that both the 2 way and 3 way valves 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 Operate the unit for 10 to 15 minutes 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 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose Set the 2 way valve to the close position Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa Immediately set the 3 way valve to the closed position Do thi
21. he corresponding code will display on indoor unit LED 7 9 6 Sensor protection at open circuit and breaking disconnection 7 3 7 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 7 3 8 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 7 3 9 Indoor fan delayed open function 7 3 10 For all modes when the units are turned on the indoor fan can operate 10 seconds after the action of louver 7 3 11 Compressor preheating function 1 Preheating permitting condition If T4 outdoor ambient temperature 3 C and the machine connects to power supply newly or if T4 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 or user turns on the machine and compressor runs preheating function will stop 7 4 Fan Only Mode 7 4 1 Temperature setting function is disabled and no setting temperature display 7 4 2 n this mode the action of louver is the same as in cooling m
22. lable only at cooling including auto cooling and turbo and drying mode when the user press down the button Self Clean on remote controller the Self Clean icon on LCD screen of indoor unit will keep bright After running for 13 minutes in low fan mode the unit turns into low heating mode anti cold wind function is not valid when the unit keeps low heating mode for 1 min or evaporator high temp protection occur it stops and turns into low fan mode and keeps running for 2 minutes then quits from Self Clean function and turns off 3 When setting the Self Clean function the unit has been in Timer or Turbo function the Timer or Turbo function will be cancelled and then execute Self Clean function 4 When the unit is running Self Clean function all functions are not available except swing air direction clean air LED display and only receiving Self Clean code again or turn off code the unit can quit from the function 5 When the unit is running Self Clean function all protection functions are valid 7 17 Follow me function Follow me function is chosen through wire jumper J1 in indoor PCB it s available when the unit has detected that J1 is on after getting through the power 2 Ifthe indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller the buzzer will emit a sound and this indicates the follow me function is initiated But when the indoor PCB receives signal which s
23. lash and stops 20 seconds later It displays the room temperature when the air conditioner is in FAN only operation When the unit stops operation it returns to original factory settings The temperature indicator area will display SC when the self clean function is started It also displays the malfunction code or protection code 20 FAN SPEED indication lamp Displays the selected fan speed AUTO nothing and three fan speed levels LOW MED and HIGH 7 2 2 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 7 3 Protection 7 3 1 Three Minutes Delay at restart for compressor 7 3 2 Temperature protection of compressor top 7 3 3 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 7 3 4 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 not resume until the exhaust temp is lower than 90 C 7 3 5 Inverter module Protection Inverter module Protection itself has a protection function against current voltage and temperature If these protections happened t
24. leakage B Keep level even when installing the product To avoid vibration of water leakage B Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors B Use two or more people to lift and transport the product Avoid personal injury B 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 Operational B 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 B 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 B Do not block the inlet or outlet of air flow It may cause product failure m 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 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 on pr put anything on the product outdoor units There is risk of personal injury and failure of product B Always insert the filt
25. matically when reaching the setting time 7 12 4 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 7 12 5 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 7 12 6 The tolerance of Timer is 1 minute per hour 7 13 Sleep function mode 7 13 1 Operation time in sleep mode is 7 hours After 7 hours the machine quits this mode and turns off 7 13 2 In cooling heating or auto mode sleep function is available 7 13 3 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 7 13 4 If user uses timer on function in sleep mode sleep function will pause and not resume until reaches the setting on time 7 13 5 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 canc
26. n the service port cap to a torque 18N m Be sure to check the gas leakage 16 6 7 Balance refrigerant of the 2 way 3 way valves Enc YN GREEK A Indoor unit Outdoor unit 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 is discharged too suddenly the refrigeration oil sill be discharged 17 6 8 Evacuation Indoor unit Liquid side Gas side Vacuum pump 2 4 m ES M L CLOSE 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 va
27. ode 21 7 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 medium 1 24 7 5 Cooling Mode 7 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 7 5 2 Indoor heat exchanger anti freezing function If T2 is lower than 0 C the compressor stops and resumes when T2 gt 5 C 7 5 3 Outdoor unit current control in cooling mode refer to the parameter table comp pause ISCOOL 5 freq descends if curr rises I2COOL 5 freq remains if curr descends 3 3 I1COOL 4 running normally Remark 11 COOL I2COOL I3COOL MSV1 18HRDN1 MQO 9 5A 12 5A MSV1 24HRDN1 MQO 11A 13A 7 5 4 Rating capacity test function 22 1 Setthe indoor unit with remote controller as high fan 17 in cooling mode then press TURBO button on controller 6 times or more within 10 seconds m
28. pliance 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 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 Do not modify or extend the power cable There is risk of fire or electric shock B Do not install remove or reinstall 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 Do not install 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 pro
29. r keep or descend current frequency Zone H Compressor stops after running with F1 for 60 minutes or when ATh gt 6 C 7 7 4 Outdoor unit current control in heating mode 24 comp pause ISHEAT freq descends if curr rises I2HEAT freq remains if curr descends outdoor unit current 1 running normally Remark 7 7 5 Indoor heat exchanger high temperature protection If T2 gt 60 C the compressor will stop and not resume until T2 48 C 7 7 6 Defrosting mode 1 Condition of defrosting Condition 1 If T4 0 C 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 The units runs with lt 3 C for 80 minutes and keeps lower than 4 C for more than 3 minutes Condition 2 If T4 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 the machine runs with T3 lt 39 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
30. s 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 15 6 6 Re air purging Re installation PNE Outdoor unit 2 way aie e AN Gas side ty Fa oa Charging cylinder Procedure 1 2 EN Confirm that both the 2 way and 3 way valves are set to the closed position 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 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 to on the 2 way valve Check the gas leakage Check the flare connections for gas leakage Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 0 3 to 0 5 Mpa 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 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighte
31. se of reliability Oil trap should be installed per 5 7 meters 6 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 leakage from the refrigeration cycle Qutdoor unit E d Way valve Procedure for one minute 1 Recheck the piping connections 5 Use torque wrench to tighten the service port cap 2 Open the valve stem of the 2 way valve to a torque of 1 8 kgf m 18N m counterclockwise approximately 90 wait 10 6 Set the 3 way valve to the opened position seconds and then set it to closed position 7 Mounted the valve stem nuts to the 2 way and Be sure to use a hexagonal wrench to operate the 3 way valves valve stem 8 Check for gas leakage 3 Check for gas leakage At this time especially check for gas leakage from Check the flare connection for gas leakage the 2 way and 3 way stem nuts and from the 4 Purge the air from the system service port Set the 2 way valve to the open position and remove the cap from the 3 way valve s service Caution port If
32. strong current protection diagnosis and solution Is all connections on PCB and between PCB and Repair or correct the compressor good connector or connection Replace the outdoor PCB and then repower on Is Check the compressor the failure cleared 34 8 2 8 P1 over voltage or too low voltage protection diagnosis and solution Be sure the power supply is Is the power supply good normal when using the units Replace the outdoor e box 8 2 9 P2 temperature protection of compressor top diagnosis and solution Is the connection Does compressor d Reconnect and retest operate good Is refrigerant Is protector ERN Replace the protector circulation volume normal Check the outdoor main PCB Is there Charge refrigerant some problem Is abnormality Replace the outdoor PCB the same after gas charging Check refrigerant system such as clogging of capillary etc 8 2 10 P4 inverter compressor drive error diagnosis and solution 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 452ohm Mg Reconnect and retry Replace inverter compressor 35 8 3 Key parts checking 8 3 1 Compressor checking Model DA150S1C 20FZ Measure the resistance value of each winding by using the multi met
33. 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 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 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 Turn the main 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 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
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