Midea MSV1i-12HRDN1 User Guide Manual
Contents
1. C O O CIC LJ 9 b Outdoor unit M4OA 27HRIN1 EA El LO ao m wy Sy Inc EES CAB ER PEE T HHL apes Downloaded from AC Manual com Manuals 3 Refrigeration Cycle Diagram 3 1 Refrigeration circuit drawing of inverter quadplex type Axial flow fan 7 Auxiliary Capillary i Exhaust Main temp sensor r 1 eal Capillary L Check 7 Condenser Coiltemp Valve 4 way J sensor valve Compressor Outdoor Unit Capillary A EKVA x Filter A Capillary B 7TEKVB Filter B Capillary C _LEXVC Filter C Capillary C EXV C KO Filter C Indoor pipe out temp seneor A Indoor pipe out temp seneor B Indoor pipe out temp seneor C Indoor pipe out temp seneor D 3 2 Refrigeration circuit drawing of inverter trinary type Axial flow fan Auxiliary Capilla Exhaust Main aed temp sensor Capillary Check Condenser Coil temp Valve kway sensor valve Compressor Outdoor Unit Downloaded from AC Manual com Manuals Capillary A I EXV A Filter A Capillary B EXV B Filter B Capillary C lL EXVC x f Filter C Indoor pipe out temp sene2. One two three or four indoor units can be connected according your need As 18000 Btu h unit just Cassette and duct are available There should be no more two duct indoor units and other indoor units should be all wall mounted in a system There should be no more one cassette and other indoor units should be all wall mounted in a system Cassette and duct can not be combined in a system When heating capacity attenuate sharply if indoor unit capacity exceed too much Downloaded from AC Manual com Manuals 6 Wiring Diagram 6 1 Indoor unit 2205209008 CNG Ont CN11 CNI4 AUTO RESTART TTT eee ee ee ee OUTDOOR UNIT TRANSFORMER SWITCH BOARD DISPLAY BOARD 6 2 Outdoor unit M20A 18HRIN1 ae E E A E nee MDOE NA TAN MAN UA KIE MPE MNEMIE BA EU NAONA SANA E SENSE KAWA SHOBAMAMGSE UMA NAKU DA MTA vad LERNE ELECTRONIC HEPANSIVE EXPANSIVE VALVE A YALE B HEAT TECHANGER Wa WA ya SR pi 4 TEP Ay A aa a a E Conant FLACK TEMP SENSOR co FILTER rey AA GE S g CONNECTOR EIFS SER COMPRESSOR INDOOR PIPE OUT PIPE OUT TEMP B INDOOR TEMP A RECTIFIER RECTIFILERI el 4 TAYS VALVE Downloaded from AC Manual com Manuals 6 3 Outdoor unit M3OA 27HRIN1 ELECTRONIC ELECTRONIC ELECTRONIC EXPANSIVE EXPANSIVE EXPANSIVE VALVE A VALVE B VALVE C TEMP gt ma Roco C JELHAUST BLACK TEMP SENSOR Ka uu ep RED WITE COMPRESSOR INDO
3. 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3577 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38 5 6296 65 1 9653 12 18 7177 39 5 3969 66 1 8963 13 17 8005 40 5 1752 67 1 830 14 16 9341 41 4 9639 68 1 7665 15 16 1156 42 4 7625 69 1 7055 16 15 3418 43 4 5705 70 1 6469 Downloaded from AC Manual com Manuals 31 Annex 2 1 Reference voltage data a Rectifier Input 220 230V AC output 310V DC Normally In power board P3 and P4 310V DC P5 and P6 310V DC b Inverter module U V W 3ph Result U V 60 150V AC U W 60 150V AC V W 60 150V AC P N DC 310V c Photo couple PC817 PC851 Control side lt 5V AC side lt 24V AC d S terminal and N changeable from 0 24V 2 Check the Diode Bridge component In wiring diagram rectifier Remark If this part is abnormal the LED will not light Multi meter Result Forward Resistance Backward Resistance Infinite Infinite 500 ohm Infinite 500 ohm Infinite 32 Downloaded from AC Manual com Manuals
4. 3 Heating mode 1 Indoor Fan actions at heating mode Indoor Fan can be set at HIGH MID LOW AUTO by using a remote controller but Anti cold wind function prevails Anti cold wind control function at heating mode Condition Indoor fan speed T Indoor exchanger temp Indoor exchanger temp T lt 34 C Off up 34 C lt T lt 37 C Breeze 37 C lt T lt 44 C Low speed T gt 44 C Setting fan speed Indoor exchanger temp T gt 38 C Setting fan speed down 33 C lt T lt 38 C Low speed 24 C lt T lt 33 C Breeze T lt 24 C Off Auto wind at heating mode Condition Indoor fan speed T Indoor Temp Setting Temp Room temp up T lt 1 5 C High 1 5 C lt T lt 2 5 C Mid T gt 2 5 C Low Room temp down T lt 1 0 C High 1 0 C lt T lt 2 0 C Mid T gt 2 0 C Low Downloaded from AC Manual com Manuals Indoor evaporator high temperature protection at heating mode Condition Compressor T Indoor exchanger temp T lt 48 C On 53 C lt T lt 63 C Decrease frequency of compressor T gt 63 C Off 8 2 4 Defrost operation 1 Defrosting condition The temperature of outdoor heat exchanger remains consecutively lower than 2 c for more than 40 minutes 2 Ending condition of defrosting If one of following conditions is satisfied end the defrosting and turn into heating mode a The defrost time has reached to 10 minutes b When the temperature of out
5. 0 minutes and the compressor stops operation for 1h or the outdoor temperature is higher than 5 C for 10 minutes then restart and enter into the prior operation mode 11 Compressor pre heating function When the outdoor temperature is lower than 3 C and the compressor stops operation for more than 3 hours or the outdoor temperature is lower than 3 C and the power is just put on the compressor enters into pre heating condition When outdoor temp is more than 5 C or user operate it pre heating condition will finish 8 2 Operating mode 8 2 1 Cooling mode 1 Indoor fan keeps running fan speed can be set in high mid low Auto 2 Auto fan at cooling mode T Indoor Temp Setting Temp Condition Indoor fan speed Room temp up T lt 1 5 C Low 1 5 C lt T lt 4 C Mid T gt 4 C High Room temp down T gt 3 C High 1 C lt T lt 3 C Mid T lt 1 C Low 3 Anti freezing control to indoor evaporator at cooling mode T evaporator temp 14 Downloaded from AC Manual com Manuals Evaporator Temp Compressor T lt 4 C Off T gt 8 C On 8 2 2 Dehumidifying mode 1 The indoor fan is fixed in low speed 2 Low room temperature protection When room temperature decreases to below 10 C indoor fan stop when room temperature restores to over 12 C indoor fan start 3 At dehumidifying mode the anti freezing function of the indoor heat exchanger is the same as that of cooling mode 8 2
6. GD Midea Refrigeration Equipment Co Ltd MULTI SPLIT TYPE HEAT PUMP AIR CONDITIONERS Technical service manual 2006 R410A Vertu Inverter multi Series Indoor Models MSV1I O9HRDN1 MSV1I 12HRDN1 Outdoor Models M20A 18HRIN1 M30A 27HRIN1 M40A 27HRIN1 Downloaded from AC Manual com Manuals 1 Product features 2 Dimensions 3 Refrigeration cycle diagram 4 Operation temperature limits 5 Indoor units combination 6 Wiring diagram 7 Wiring connection 8 Electric control functions 9 Troubleshooting Annex 1 Characteristic of temp sensor Annex 2 Reference data Downloaded from AC Manual com Manuals 1 Product Features 1 1 Powerful at cooling heating 1 2 Low voltage start up function 1 3 Anti icing function at cooling mode 1 4 Anti cold air function at heating mode 1 5 Auto defrosting 1 6 Outdoor electric current protection 1 7 Temperature protection of the outdoor compressor top 1 8 Error self diagnosis function 1 9 Free connection between indoor and outdoor unit Downloaded from AC Manual com Manuals 2 Dimensions 2 1 Indoor unit aa aE Dimension W H D Mode 9K 795 270 165 12K 845 286 165 2 2 Outdoor unit a Outdoor unit M20A 18HRIN1 amp M30A 27HRIN1 Downloaded from AC Manual com Manuals 845 7 IC C
7. OR INDOOR PIPE OUT PIPE GUT PIPE OUT TEP B TEMP A EE C IPM BLUE RED BLACK Uh Uh 1 Ka E Ln INDOOR SOCKET RECT IFILER2 RECTIFILER 4 WAYS VALVE 11 Downloaded from AC Manual com Manuals 6 4 Outdoor unit M40A 27HRIN1 ELECTRONIC ELECTRONIC ELECTRONIC ELECTRONIC EXPANSIVE EXPANSIVE EXPANSIVE EXPANSIVE VALVE A VALYEB VALVEC VALED HEAT EXCHANGER BAK yg SENSOR pani a TEP sal TCH WIE D 4 protector Ba 5 EA SR ies Ja anna E z CONNECTOR JXI TER e Se AID Fee Sa ai T pe NZ IN NZ KA KZ NZI NA MZ lt a wa jwa jwa jwa i 0509096 RECTIFILER2 RECTIFILERI BLUE 12 Downloaded from AC Manual com Manuals 7 Wire connection 7 1 Connection wire specification Standard Cores Thickness mm2 Wire cover length mm specification Connection wire between indoor 6000 4 10 Neoprene unit and outdoor L N S Grounding Y ZW 300 500V unit Remark The connection wire between indoor unit and outdoor unit is packaged in the indoor unit 7 2 Connection wire drawing Heat retractile pipe Men Tight cincture GA 21 9 37 pee 120 magnetism cycle ld l zi 1 7 SS F Ya A tere 13 Downloaded from AC Manual com Manuals 2 Neoprene YZV800 500V Grounding 10mm lt gt standard And it is Grouding terminal Wire connection terminal 8 Electronic control function 8 1 Protecti
8. bundant anions to fill the room with refreshing and natural air 8 9 5 PRE DEF Indicator For Cooling amp Heating models only This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode 8 9 6 TURBO indication lamp Lights up when select TURBO function on cooling operation or on heating operation 8 9 7 FREQUENCY indicator This indicator appears only when the compressor is in operation and indicates the current operating frequency 8 9 8 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 When the unit stops operation it returns to original factory settings 18 Downloaded from AC Manual com Manuals Displays the malfunction code or protection code 8 9 9 FAN SPEED indication lamp Displays the selected fan speed AUTO nothing and three fan speed levels LOW MED and HIGH 8 10 Outdoor unit LED display function 1 When stand by it display number of indoor unit online 2 When operation it display frequency of outdoor unit 3 When defrost it display df 4 When a protection or error occurred it displays error code or protection code 8 11 Check function There is a check button on outdoor pcb When push this butt
9. door heat exchanger rises up to 15 C 3 Defrosting Actions a Compressor runs b 4 way valve switches off c Outdoor fan switches off d Indoor fan running according to anti cold wind function in heating mode 4 Automatic operation mode The air conditioner automatically selects one of the following operation modes cooling heating or fan only according to the temp difference between room temp TA and set temp TS TA TS Operation mode TA TS gt 2 C Cooling 1 CSTA TSs 2 C Fan only TA TS lt 1 C Heating air only for cooling only type 8 3 Mode conflict The indoor units can not work cooling mode and heating at same time Heating mode has a priority 8 3 1Definition Cooling mode Heating Mode Fan Off Cooling mode No Yes No No Heating Mode Yes No Yes No Fan No Yes No No Off No No No No No No mode conflict Yes Mode conflict 8 3 2 Unit action e In case of one Indoor unit working in cooling mode or fan mode and another indoor unit is set to heating mode the indoor unit working in cooling mode or fan mode will 16 Downloaded from AC Manual com Manuals change to stand by The outdoor unit will work in heating mode e In case of one Indoor unit working in heating mode and another indoor unit is set to cooling mode or fan mode the indoor unit setting to cooling mode or fan mode will change to stand by 8 4 Manual switch Mode changes when push this bu
10. h 5 2 M30A 27HRIN1 Indoor units can be combined by 7000Btu h 9000 Btu h 12000Btu h 7000Btu h 9000 Btu h 7000Btu h 12000Btu h 9000Btu h 9000 Btu h 9000Btu h 12000Btu h 12000Btu h 12000Btu h 12000Btu h 18000Btu h 9000Btu h 18000Btu h 7000Btu h 18000Btu h 7000Btu h 2 9000 Btu h 7000Btu h 2 12000 Btu h 7000Btu h 2 18000 Btu h 7000Btu h 3 9000Btu h 2 7000 Btu h 9000Btu h 2 12000 Btu h 9000Btu h 3 12000Btu h 2 7000 Btu h 12000Btu h 2 9000 Btu h 12000Btu h 7000Btu h 9000Btu h 5 3 M40A 27HRINI Indoor units can be combined by 7000Btu h 9000 Btu h 12000Btu h Downloaded from AC Manual com Manuals 7000Btu h 9000 Btu h 7000Btu h 12000Btu h 9000Btu h 9000 Btu h 9000Btu h 12000Btu h 12000Btu h 12000Btu h 12000Btu h 18000Btu h 9000Btu h 18000Btu h 7000Btu h 18000Btu h 7000Btu h 2 9000 Btu h 7000Btu h 2 12000 Btu h 7000Btu h 2 18000 Btu h 7000Btu h 3 9000Btu h 2 7000 Btu h 9000Btu h 2 12000 Btu h 9000Btu h 2 18000 Btu h 9000Btu h 3 12000Btu h 2 7000 Btu h 12000Btu h 2 9000 Btu h 12000Btu h 3 7000Btu h 9000Btu h 12000Btu h 7000Btu h 9000Btu h 18000Btu h 9000Btu h 9000Btu h 18000Btu h 7000Btu h 12000Btu h 18000Btu h 9000Btu h 12000Btu h 18000Btu h 7000Btu h 2 9000 Btu h 2 7000Btu h 2 9000 Btu h 12000 Btu h 7000Btu h 3 9000 Btu h 7000Btu h 3 12000 Btu h 7000Btu h 3 18000 Btu h 7000Btu h 4 9000Btu h 2 7000 Btu h 12000 Btu h 9000Btu h 3 7000 Btu h 9000Btu h 3 12000 Btu h 97000Btu h 4 Remark 1 2 3
11. ion EO EEPROM error E1 No 1 Indoor units pipe temp sensor or connector of pipe temp sensor is defective E2 No 2 Indoor units pipe temp sensor or connector of pipe temp sensor is defective E3 No 3 Indoor units pipe temp sensor or connector of pipe temp sensor is defective E4 Outdoor temp sensor or connector of temp sensor is defective E5 Compressor voltage protection E6 No 4 Indoor units pipe temp sensor or connector of pipe temp sensor is defective E7 Outdoor inverter communication error PO Compressor top protection against temperature P1 High pressure protection reserve P2 Low pressure protection reserve P3 Compressor current protection P4 Inverter module protection P5 Outdoor low temp protection P6 Condenser high temperature protection 22 Downloaded from AC Manual com Manuals 9 3 Trouble shooting Display LED STATUS EO EEPROM error Replace the indoor PCB Temporarily turn off the power supply and turn it on again after 1 minute Does the trouble occur again Downloaded from AC Manual com Manuals 23 Display LED STATUS E1 No 1 Indoor units pipe temp sensor or connector of pipe temp sensor is defective Yes Replace the sensor Is connection to connector of pipe temp sensor good Check the resistance of the temp sensor according to Annex 1 Repair connector Display LED STATUS E2 No 2 Indoor units pipe temp sensor or con
12. ires between outdoor PCB s is it connected good 1 Is the 5 voltage in outdoor main board Power Board CN1 Red wire and yellow GND Outdoor main PCB CZ1 2 ls the 12 voltage in outdoor main board Power Board CN1 Purple wire and yellow GND Inverter module defective Rectifier circuit is bad connection or defective when the voltage in outdoor is abnormal P3 and P4 310V DC P5 and P6 310V DC Check the PC521 PC851 at Outdoor power PCB Normally Input voltage lt 5V changeable Output voltage lt 24V changeable Outdoor power PCB is defective Yes Check the PC817 PC851 at Indoor main PCB and outdoor main board Normally Input voltage lt 5V changeable Output voltage lt 24V changeable Indoor PCB or outdoor main PCB are defective 26 Downloaded from AC Manual com Manuals Display LED STATUS PO Compressor top protection against temperature Off 120 C On 105 C Does compressor operate No Is protector on the top of compressor Is refrigerant circulation volume normal P P P normal Normally the resistance of the protector is 0 ohm Gas charging Is abnormality the same after gas charging Replace protector Check the outdoor main PCB Refrigerant system such as clogging of capillary clogging of pipe etc 27 Downloaded from AC Manual com Manuals Display LED STATUS P3 Compressor current protectio
13. mode 8 6 5After 7 hours unit cancels this mode automatically Downloaded from AC Manual com Manuals 17 J2 On On Off Off J3 On Off On Off Stop time 7 hours 8 hours 6 hours 7 hours 8 7 Auto restart function In case of a sudden power failure this function automatically sets the unit to previous settings before the power failure when power returns 8 8 Capacity test frequency locked When test the cooling capacity the frequency can be locked at Rated Frequency by following the below 1 Set the indoor temp to 17 C and high speed 2 Push the outdoor check button for 5 seconds then its frequency can be fixed at Rated Frequency After the test is over turn off the indoor to exit When test the heating capacity the frequency can be locked at 85Hz by following the below 1 Set the indoor temp to 30 C and high speed 2 Push the outdoor check button for 5 seconds then its frequency can be fixed at Rated Frequency After the test is over turn off the indoor to exit 8 9 Indoor unit indicator displayer 8 9 1 OPERATION indicator This indicator flashes after power is on and illuminates when the unit is in operation 8 9 2 AUTO indicator This indicator illuminates when the air conditioner is in AUTO operation 8 9 3 TIMER indicator This indicator illuminates when TIMER is set ON OFF 8 9 4 CLEAN AIR indication lamp Lights up when CLEAN AIR feature is activated and lonizer can generate a
14. n Check the resistance of compressor normally U and V is 0 6 ohm U and W is 0 6 ohm V and W is 0 6 ohm The compressor is defective Turn one indoor unit only Does the compressor start after 3 minutes The compressor is defective Does the trouble occur again after compressor running some time Check the refrigerant circulation volume and pressure If refrigerant circulation volume and pressure is OK change the outdoor main PCB 28 Downloaded from AC Manual com Manuals Display LED STATUS P4 Inverter module protection Check the connectors CN12 CN7 CN1 in outdoor PCBs Is connection to connector good Yes Are the wires to compressor right Yes Check the outdoor inverter module Repair connector Is it breakdown between P N P U P V N W N U N V At inverter module Normally P N 1 0MOQ P U 2 0MOQ P V 2 0MO P W 2 0MQ N W 1 0MO N U 1 0MO N V 1 0MO Inverter module is defective Check compressor 1 Turn on the unit in cooling or heating in different season use a frequency meter to test the frequency in one of the three wires to compressor if there is frequency in wires but compressor do not run the compressor is defective 2 Between U V W three terminals the resistance is about 0 6 Q 29 Downloaded from AC Manual com Manuals Display LED STATUS P5 Outdoor low temp protection This is op
15. nector of pipe temp sensor is defective Replace the sensor Is connection to connector of pipe temp sensor aood Check the resistance of the temp sensor according to Annex 1 Repair connector Display LED STATUS ES No 3 Indoor units pipe temp sensor or connector of pipe temp sensor is defective Replace the sensor Downloaded from AC Manual com Manuals Is connection to connector of pipe temp sensor aood 24 Check the resistance of the temp sensor according to Annex 1 Repair connector Display LED STATUS E4 Outdoor units temp sensor or connector of temp sensor is defective Is connection to connector of pipe temp sensor good Repair connector Check the resistance of the temp sensor according to Annex 1 Replace the sensor Display LED STATUS E5 Compressor voltage protection Check the voltage of power supply if the voltage is about 220V turn off the power supply to indoor unit and turn it on again after 1 minute Does the trouble occur again Yes Check the voltage of secondary of T3 transformer in outdoor power board is this voltage 12 14V AC No Replace the outdoor power board 25 Downloaded from AC Manual com Manuals Display LED STATUS E7 Indoor outdoor units communication protection Is the LED in outdoor main PCB light Check the signal w
16. on 1 3 minutes delay at restart for compressor 2 Temperature protection of compressor top compressor stops when the temp of top of compressor is more than 120 C compressor runs when the temp of top of compressor is less than 105 C 3 When AC voltage gt 270V for 30 seconds Outdoor Unit stops operation and alarms When AC voltage lt 260V for 30 seconds outdoor unit resumes operation 4 Inverter module protection Inverter module Protection itself has a protection function against current voltage and temperature 5 Sensor protection at open circuit and breaking disconnection 6 Fan Speed is out of control When Indoor Fan Speed is too high higher than High Fan 300RPM or too low lower than 400RPM the unit stops and LED displays failure information and can t return to normal operation automatically 7 Cross Zero signal error warning If there is no Cross Zero signals in 4 minutes the unit stops and LED displays failure information and can t return to normal operation automatically 8 Current protection When the current is more than 25A the compressor stops 9 Outdoor condenser high temperature protection Under cooling mode if T3 gt 65 C for 3 minutes the compressor will stop When T3 lt 52 C the protection is not valid 10 Outdoor low temperature protection If the outdoor temperature is lower than 15 C for 1hour the compressor and fan motor will stop If the outdoor temperature is higher than 12 C for 1
17. on the outdoor LED can display in sequence Capacity demand Running mode revised capacity fan state No 1 evaporator pipe temp No 2 evaporator pipe temp No 3 evaporator pipe temp No 4 evaporator pipe temp outdoor pipe temp Outdoor temp discharge gas temp current of outdoor unit No 1 opening degree of electronic expansion valve No 2 opening degree of EXV No 3 opening degree of EXV gt No 4 opening degree of EXV indoor unit number last protection error code capacity demand cycle Explanation for the some display content 1 Running mode Display Corresponding mode 0 Off 1 Cooling mode 2 Heating mode 2 Fan state Display Corresponding mode 0 Off 1 Low fan 2 High fan 3 Opening degree of EKV Opening degree eguals the display data times 8 4 Number of indoor unit The indoor unit that can communicate with outdoor unit normally Downloaded from AC Manual com Manuals 8 12 Outdoor fan speed control There is one fan with two speed the fan speed is controlled according ambient temp After the compressor stop 30 seconds later the fan stops When cooling gt 27 High speed Ambient temp rise lt 27 Low speed Ambient gt 25 High speed temp decline lt 25 Low speed When heating i gt 14 Low speed Ambient temp rise lt 14 High speed Ambient gt 12 Low speed temp decline lt 12 High s
18. or A Indoor pipe out temp seneor B Indoor pipe out temp seneor C Liquid valve A Liquid valve B Liquid valve C Liquid valve D Gas valve A Gas valve B Gas valve C Gas valve D Liquid valve A Liquid valve B Liquid valve C Gas valve A Gas valve B Gas valve C Cross flow fan Evaporator Indoor Unit Cross flow fan Evaporator Indoor Unit 3 2 Refrigeration circuit drawing of inverter binary type Axial flow fan EXVA gt Auxiliary Filter A Liquid valve A Exhaust Main Capillary DES temp sensor 1 Capillary Capillary A EXVB Check FilterB Liquid valve B Condenser Coil temp Valve X S 2 4 way VI sensor Capillary B 2 valve 2 S 8 O Indoor pipe out temp seneor A Pa valve A Compressor Indoor pipe out temp seneor B Gas valve B Indoor Unit Outdoor Unit 4 Operation Temperature Limits Indoor temperature 17 32 Cooling mode P 00 320 Outdoor temperature og 0 500 Heating mode Indoor temperature lt 30 Outdoor temperature 150 0 330 Indoor temperature 10 32 Dry mode p OO s320 Outdoor temperature og 0O 500 7 Downloaded from AC Manual com Manuals 5 Indoor units combination 5 1 M2OA 18HRIN1 Indoor units can be combined by 7000Btu h 9000 Btu h 12000Btu h 7000Btu h 9000 Btu h 7000Btu h 12000Btu h 9000Btu h 9000 Btu h 9000Btu h 12000Btu h 12000Btu h 12000Btu h 12000Btu h 18000Btu h 9000Btu h 18000Btu h 7000Btu h 18000Btu
19. peed 8 13 Oil return function If operation frequency is lower than 54Hz in 2 hours consecutively it will be increased to 62Hz for 3 minutes Then it recovers to the former operation frequency 20 Downloaded from AC Manual com Manuals 9 Troubleshooting for outdoor unit 9 1 Safety Because of there are capacitors in PCB and relative circuit 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 The value of resistance is about 1500 ohm to 2000 ohm Resistance The voltage in P3 and P4 in outdoor PCB is high voltage about 310V The voltage in P5 and P6 in outdoor PCB is high voltage about 310V 21 Downloaded from AC Manual com Manuals 9 2 LED error code display for indoor unit Display LED STATUS EO EEPROM error E1 Indoor and outdoor unit communication error E2 Zero crossing examination error E3 Fan speed beyond control E5 Outdoor units temp sensor or connector of temp sensor is defective E6 Indoor units temp sensor or connector of temp sensor is defective PO Inverter module protection P1 Outdoor unit voltage protection P2 Compressor top temperature protection P3 Outdoor low temp protection P4 Inverter compressor drive protection P5 Mode conflict protection 9 3 LED error code display for outdoor unit Display Explanat
20. tional factory standard unit does not have this function Unit stops when outdoor temp is lower than 15 C and lasting time more than 60 minutes and unit runs again when outdoor temp more than 12 C Is the outdoor temp lower than 15 C Replace the outdoor main board Display LED STATUS P6 Condenser high temperature protection When outdoor pipe temp is more than 65 C the unit will stop and unit runs again when outdoor pipe temp is less than 52 C Replace the outdoor main board Is the outdoor pipe temp sensor right according to the annex 1 Is the outdoor pipe temp more than 65 C 30 Downloaded from AC Manual com Manuals Replace the outdoor temp sensor Replace the outdoor pipe temp sensor Characteristic of temp sensor Anner 1 Temp Resistance KO Temp 0 Resistance KO Temp 0 Resistance KO 10 62 2756 17 14 6181 44 4 3874 9 58 7079 18 13 918 45 4 2126 8 56 3694 19 13 2631 46 4 0459 7 52 2438 20 12 6431 47 3 8867 6 49 3161 21 12 0561 48 3 7348 5 46 5725 22 11 5 49 3 5896 4 44 23 10 9731 50 3 451 3 41 5878 24 10 4736 51 3 3185 2 39 8239 25 10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7
21. tton Cooing mode Auto mode Unit off gt Cooing mode At Cooing mode after 30 minutes cooling operation whose fan speed is set as low the A C operates with a setting temp of 24 C At auto mode the A C operates with a set temp of 24 C 8 5 Timer Function 1 The maximum length of timer is 24 hours and the minimum resolving power is 15 minutes 2 Timer on first turn off the A C the A C will be automatically on at the set time 3 Timer off first turn on the A C the A C will be automatically off at the set time 4 Timer on off function on time is earlier than off time first turn off the A C it will be automatically on at set time and later be off at the set time then unit turns on at set time 5 Timer off on function off time is earlier than on time first turn on the A C it will be automatically off at set time and later be on at the set time then unit turns off at set time 8 6 Sleep mode 8 6 1It is available at cooling heating or auto mode 8 6 2Cooling The set temperature rise 1 C per hour Two hours later the set temperature will maintain as a constant and the fan speed is kept at low speed 8 6 3Heating The set temperature decrease 1 C per hour Two hours later the set temperature will maintain as a constant and the air circulation is kept at low speed Cold air proof function takes precedence over all 8 6 4 Auto The Sleep Mode running function operates in accordance with selected running mode by auto
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