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Mitsubishi Heavy Industries 1000KXZE1, Service Manual, Page: 2 / 169

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Mitsubishi Heavy Industries 1000KXZE1 Service Manual Download Page 2

 '14 • KX-SM-202

CONTENTS

1.  OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ..................... 1

1.1   Remote control (Option parts) ................................................................... 1
1.2   Operation control function by the wired remote control ............................. 4
1.3   Operation control function by the indoor control ....................................... 9
1.4   Operation control function by the outdoor control ................................... 22 

2.  SYSTEM TROUBLESHOOTING PROCEDURE ............................................. 66

2.1   Basics of troubleshooting ........................................................................ 66
2.2   Explanation of troubleshooting ................................................................ 67
2.3   Contents of troubleshooting .................................................................... 68
2.4   Outdoor unit control PCB replacement procedure ................................ 124
2.5   Outdoor unit inverter PCB replacement procedure ............................... 126
2.6   Outdoor unit transistor module replacement procedure ........................ 128

3.  ELECTRICAL WIRING .................................................................................. 131
4.  PIPING SYSTEM ............................................................................................ 134
5.  APPLICATION DATA .................................................................................... 137

5.1   Installation of outdoor unit ..................................................................... 137
5.2   Instructions for installing the branch pipe set ........................................ 162
5.3   Procedure to attach or remove the front panel ...................................... 166

Summary of Contents for 1000KXZE1

Page 1: ...Heat pump type Corrosion protection treatment series Non CE Marking models Single use Used also for combination FDCS280KXZE1 335KXZE1 400KXZE1 450KXZE1 475KXZE1 500KXZE1 560KXZE1 Combination use FDCS615KXZE1 670KXZE1 735KXZE1 800KXZE1 850KXZE1 900KXZE1 950KXZE1 1000KXZE1 1060KXZE1 1120KXZE1 1200KXZE1 1250KXZE1 1300KXZE1 1350KXZE1 1425KXZE1 1450KXZE1 1500KXZE1 1560KXZE1 1620KXZE1 1680KXZE1 SERVICE ...

Page 2: ... PROCEDURE 66 2 1 Basics of troubleshooting 66 2 2 Explanation of troubleshooting 67 2 3 Contents of troubleshooting 68 2 4 Outdoor unit control PCB replacement procedure 124 2 5 Outdoor unit inverter PCB replacement procedure 126 2 6 Outdoor unit transistor module replacement procedure 128 3 ELECTRICAL WIRING 131 4 PIPING SYSTEM 134 5 APPLICATION DATA 137 5 1 Installation of outdoor unit 137 5 2 ...

Page 3: ...set temp button Displays the temperature which is set currently Tap this button to change the set temperature Change operation mode button Displays the operation mode which is selected currently Tap this button to change the operation mode Timer button Displays simplified contents of the timer which is set currently When two or more timers are set contents of the timer which will be operated immed...

Page 4: ...justment mode Cover AIR CON No button Display the indoor unit number connected to this remote control CHECK button This button is used at servicing TEST button This button is used during test operation Weekly timer display Displays the settings of the weekly timer Operation setting display area Displays setting temperature airflow volume operation mode and oparation message Operation check indicat...

Page 5: ...n this is pressed once again it stops operating Used to swing the louver Every time this button is pressed displays switch as below Sets room temperature by pressing or button Sets time when setting the time Used to cancel the TIMER SETTINGS Used to reset the microcomputer Indicates the selected airflow volume Indicates when ON TIMER is set Indicates the ON TIMER setting time Nothing displayed whe...

Page 6: ...rd 4 digit number TOP screen Menu screen 1 Menu screen 3 Service password input Tap the Menu button on the TOP screen Main menu screen is displayed Tap the Service Maintenance on the menu screen Display the service password input screen Enter the service password 4 digit number TOP screen Menu screen 1 Menu screen 3 Service password input Service maintenance menu 1 Service maintenance menu 2 Servi...

Page 7: ...etting of silent mode is cancelled regardless whether the power failure compensation is effective or not a At power failure Operating stopped If it had been operating under the off timer mode sleep timer mode the state of stop is memorized Although the timer mode is cancelled at the recovery from power failure the setting of weekly timer is changed to the holiday setting for all weekdays b Operati...

Page 8: ...pectively The selectable range of the set time is from 20 min to 120 min 10 min interval Set the Set back temp by 1 interval 6 Filter sign reset メ ニュー 7番目 Ａ 1 Filter sign reset Ｂ 2 Setting next cleaning date Ａ 7 Initial settings メ ニュー 8番目 1 Clock setting 2 Date and time display Ａ Ａ 3 Summer time Ａ 4 Contrast Ａ 5 Backlight Ａ 6 Controller sound Ａ 8 Timer settings メ ニュー 9番目 Ａ 1 Set On timer by hour T...

Page 9: ... Ｂ Auto fan speed setting Valid or Invalid of Auto fan speed setting can be selected Ｂ Ｂ Ｂ Ｂ Ｂ Ａ Ａ Ａ Ａ Main indoor unit address can be set Only the Main indoor unit can change operation mode and the Sub indoor units dominated by the Main indoor unit shall follow The Main indoor unit can domain 10 indoor units at a maximum 12 Installer settings 13 RC function settings Setting display item 11 Admini...

Page 10: ...e of stop is memorized Although the timer mode is cancelled at the recovery from power failure the setting of weekly timer is changed to the holiday setting for all weekdays b Operation mode c Airflow volume mode d Room temperature setting e Louver auto swing stop However the stop position 4 position is cancelled so that it returns to Position 1 f Remote control function items which have been set ...

Page 11: ...indoor unit fan tap at the thermostat ON is retained so far as the thermostat is turned OFF 3 Timer operation a RC EX1A i Sleep timer Set the time from the start to stop of operation The time can be selected in the range from 30 to 240 minutes in the unit of 10 minute Note 1 Enable the Sleep timer setting from the remote control If the setting is enabled the timer operates at every time ii Set OFF...

Page 12: ...in parallel when the times to turn ON and OFF the airconditioner are duplicated the setting of the OFF timer has priority 4 Remote control display during the operation stop When the operation is stopped the power supply is turned ON it displays preferentially the Room temperature Center Remote Filter sign Inspection and Timer operation 5 Hot start Cold draft prevention at heating a Operating condi...

Page 13: ... the indoor heat exchanger temperature detected with ThI R1 or R2 drops to 35 C or lower the speed of indoor fan is changed to the lower tap at each setting ii During the hot keep the louver is kept at the horizontal position b Ending condition When the indoor fan is at the lower tap at each setting it returns to the set airflow volume as the indoor heat exchanger temperature rises to 45 C or high...

Page 14: ...vent the cold start The louver position display LCD continues to show the display which has been shown before entering this control iii Louver free stop control When the louver free stop has been selected with the indoor function of wired remote control POSITION the louver motor stops when it receives the stop signal from the remote control If the auto swing signal is received from the remote cont...

Page 15: ... including stop this control is stopped immediately and the operating condition is restored v When the Fan OFF is selected the fan on the indoor unit of which the thermostat has been turned OFF is turned OFF The same occurs also when the remote control sensor is effective d Fan control during cooling thermostat OFF i Following fan controls during the cooling thermostat OFF can be selected with the...

Page 16: ...s after the compressor ON 1 OFF OFF 3 minutes delay Thermostat OFF in the condition of 9 Compressor Indoor unit A Thermostat Indoor unit B Thermostat 11 Drain pump control a This control is operated when the inverter frequency is other than 0 Hz during the cooling operation and automatic cooling and dehumidifying operations b Drain pump ON condition continues for 5 minutes even when it enters the ...

Page 17: ...ing on each operating condition 13 Operation check drain pump test run operation mode a If the power is turned on by the dip switch SW7 1 on the indoor PCB when electric power source is supplied it enters the mode of operation check drain pump test run It is ineffective prohibited to change the switch after turning power on b When the communication with the remote control has been established with...

Page 18: ...s E6 18 External input output control CnT or CnTA Be sure to connect the wired remote control to the indoor unit Without wired remote control remote operation by CnT is not possible to perform CnT CnTA Operation output CnT 2 XR1 Heating output CnT 3 XR2 Thermostat ON output CnT 4 XR3 Error output CnT 5 XR4 Remote operation input CnT 6 Volt free contact XR1 1 2 3 4 5 6 XR3 XR4 CnT Blue 12V XR2 Opti...

Page 19: ...he indoor function setting of Level input Factory default or Pulse input is selected by the function for External input of the wired remote control operation status will be changed as follows i In case of Level input setting Factory default Input signal to CnT 6 or CnTA is OFF ON unit ON Input signal to CnT 6 or CnTA is ON OFF unit OFF Operation is not inverted ON ON OFF OFF OFF ON ON ON ON Remote...

Page 20: ... key switch is ON CnT 6 or CnTA ON Operation permission start stop operation of the unit from the wired remote control becomes available When card key switch is OFF CnT 6 or CnTA OFF Operation prohibition the unit stops operation in conjunction with OFF signal and start stop operation of the unit from the wired remote control becomes not available 2 In case that Operation permission prohibition mo...

Page 21: ...e input is set for the indoor unit function If the external input is changed OPEN CLOSE operation modes are inverted Cooling Heating or Heating Cooling Operation Operation Operation Stop Stop Stop Stop Operation prohibition Operation prohibition Operation prohibition Operation prohibition Operation prohibition Operation prohibition Operation permission Operation permission Operation permission Ope...

Page 22: ...is installed at the ceiling where warm air tends to accumulate the setting can be changed with the wired remote control indoor unit function The compressor and the heater are turned ON OFF at one of the setting temperature 3 2 or 1 C in order to improve the feeling of heating The setting temperature however has the upper limit of 30 C Compressor Compressor Standard Operation Stop Setting temperatu...

Page 23: ...5 C unit goes thermo OFF 30 Auto fan speed control RC EX1A only In order to reach the room temperature to the set temperature as quickly as possible the airflow rate is increased when the set temperature of thermostat differs largely from the return air temperature According to temperature difference be tureen set temperature and return air temperature indoor fan tap are controlled automalically A...

Page 24: ... Remote control command Remote control command Remote control command Intermittent operation Inverter cooling fan FMC1 2 Solenoid valve 20UF Magnetic contactor CM1 52X1 Magnetic contactor CM2 52X2 Solenoid valve SV1 Solenoid valve SV2 Crankcase heater CH1 2 Notes 1 ON OFF ON or OFF 2 1 The EEVH1 2 of master unit are fully opened and those of slave unit are fully closed 3 2 When the unit is stopped...

Page 25: ...f compressors operating in outdoor units 0 1 CM1 0rps 20 140rps Note 1 only model 355 is MAX 140rps model 280 is MAX 120rps 2 Single use Model 400 450 CM1 Range of the compressor operation frequency relative to load is as follows System load range 0 1 Local load range 0 1 CM1 0rps 20 120rps 3 Single use Model 475 500 560 2 compressors specification CM1 CM2 Range of the compressor operation frequen...

Page 26: ... 65rps 31 70rps Slave unit CM11 0rps 0rps 52 120rps 6 2 outdoor units combination use Model 800 850 900 Master unit Slave unit CM01 CM11 CM1 CM1 Range of the compressor operation speed relative to load is as follows Following table is applicable when CM01 starts initially System load range 0 1 2 Local load range 0 1 1 Master unit CM01 0rps 20 65rps 31 120rps Slave unit CM11 0rps 0rps 31 120rps 7 2...

Page 27: ...3 Local load range 0 0 1 1 2 Master unit CM01 0rps 20 112rps 31 112rps 31 112rps 31 120rps CM02 0rps 0rps 0rps 0rps 31 120rps Slave unit 1 CM11 0rps 0rps 31 112rps 31 112rps 31 120rps CM12 0rps 0rps 0rps 0rps 31 120rps Slave unit 2 CM21 0rps 0rps 0rps 31 112rps 31 120rps CM22 0rps 0rps 0rps 0rps 31 120rps ii Rotation of compressor start stop order 1 The compressors will be changed over by determin...

Page 28: ...000 11th speed 1100 1100 12th speed 1140 1140 Rated speed of cooling b Outdoor fan control in cooling mode Fan speed is controlled based on the high pressure during cooling dehumidifying detected with PSH and the outdoor air temperature detected with Tho A i Initial fan speed is as follows Initial cooling speed of outdoor fan Outdoor temperature 10 C 10 C Outdoor temperature 15 C 15 C Outdoor temp...

Page 29: ...is shorted 1 When the temperature detected with both outdoor heat exchanger temperature thermistors Tho R1 and Tho R2 is higher than 9ºC 2 Or when 12 minutes have elapsed since defrosting started Cold region setting J14 is open 1 When Tho R1 and Tho R2 9ºC is satisfied after 2 minutes and 30 seconds have elapsed since defrosting started and when either of following conditions is satisfied the defr...

Page 30: ...ates 4 times within 15 minutes 52C1 or 52C2 is turned off and the operation is stopped with the error stop State of the error continues for 3 minutes after the error stop The error can be reset by operating the inspection reset from the remote control g Power transistor temperature PT protective control If temperatures on the power transistor exceed the setting value the compressor speed is reduce...

Page 31: ...uction pipe temperature thermistor anomaly E Under dome temperature thermistor anomaly E Discharge pipe temperature thermistor anomaly E 0 High pressure anomaly E Power transitor temperature thermistor anomaly E Power transister overheat E Anomalous compressor by loss synchronism E Current cut E Liquid flooding anomaly E Compressor startup failure E 0 Rotor position detection failure iv If any ano...

Page 32: ...up operation i When the conditions of oil return control are not established ii When the backup operation time has exceeded the limit value d Control after the conditions to prohibit the auto backup operation have been established All compressor stop and the error display E XX is shown on the segment display and the remote control In this state the inspection reset of remote control is effective E...

Page 33: ...ever regarding the dip switch SW3 2 for automatic backup operation it is invalid during test run operation regardless whether SW3 2 is turned ON valid or OFF invalid In order to check trouble during test run operation d Control during test run If indoor units are normal i Heating operation is performed with SW5 2 OFF while cooling operation is performed with SW5 2 ON ii Indoor EEV control at the e...

Page 34: ...y a starting indoor unit address in automatic address setting The communication plotocol is displayed display only P33 Input number of connected indoor units Specify the number of indoor units connected in the refrigerant system in automatic address setting 7 segment display indication in automatic address setting Name Purpose Factory default Specification Operating side connector External input C...

Page 35: ... operation Remote control display Air conditioner operation stop PUSH PUSH PUSH OFF Center Remote ON Shorted Center OFF OFF Open Air conditioner ON OK OFF ON ON OFF OFF ON ON Remote control operation Remote control display Air conditioner operation stop Center Center Center Remote Remote Air conditioner ON OK CnS1 input OFF OFF ON ON OFF OFF ON OFF ON PUSH PUSH PUSH PUSH PUSH Input CnS2 Switching ...

Page 36: ... ON PUSH PUSH PUSH PUSH c 3 step demand control 14 KX SM 202 OFF OFF ON ON Demand OFF OFF ON ON ON ON OFF OFF Demand This control has priority over the controls of 4 way valve safeguard compressor protective start operation defrost operation oil equalized operation oil return operation pump down operation for replacement Start Stop pump down operation and check operation 1 Starting condition When ...

Page 37: ...transmitted from an indoor unit of Peak cut timer function Normal demand of Item b is not activated This control is performed on the RC EX1A remote control 2 Contents of control Compressor s upper limit speed is restricted according to the demand restriction rate The demand ratio controlled by the restriction rate which is transmitted from an indoor unit If the demand control rate signals are rece...

Page 38: ...s from all indoor units become Silent mode end and when silent mode signal input to CnG2 on outdoor unit becomes open the silent mode operation is reset f The operation of silent mode 1 is effective within the following temperature range Cooling Heating Outdoor air temperature Outdoor air temperature i Silent mode 0 1 Effect on field A B g Silent mode setting Silent mode setting can be changed wit...

Page 39: ...oor fan snow protection control is saved in the memory of EEPROM and henceforth the outdoor fan is controlled according to the contents of memory vii Contents of outdoor fan snow protection control are retained even if the power is turned off and backed on again d Contents of outdoor fan snow protection control i At the status of all stop or emergency stop if the outdoor air temperature drops 3 C ...

Page 40: ...wing cases At the stop When the P01 setting is changed 3 In the event that agreement of operation mode is lost between indoor units and outdoor units by selecting the first or second priority after determining the operation mode it is changed forcibly to the Fan mode The operation mode LCD flickers to warn the Mode unmatch 4 Example of operation mode selection First unit s operation mode If both o...

Page 41: ...ing unmatched When unmatch occurs among indoor units it can be reset by either one of followings If the operation mode of outdoor unit is matched with that of indoor unit If the operation mode is changed to Fan or Stop on the indoor units on which Cooling heating is unmatched Indoor unit 0 Stop Fan Fan ON Indoor unit 1 Stop Heating Heating ON Indoor unit 0 Stop Cooling Invalid operation lamp flick...

Page 42: ...ed on the remote control etc and it is changed to the fan operation P18 1 It is operated with the forced cooling heating operation mode Setting temperature for cooling 28 Setting temperature for heating 20 5 Emergency stop control When one of indoor units receives the emergency stop signal through CnT terminal on the indoor control PCB from the device like as refrigerant leakage detector and that ...

Page 43: ...ld The maximum load of relay is LY2F Omron f The output connectors CnH CnY to be connected to the relays for operation output 52XR and for error output 52XE is mounted on the outdoor control PCB g If CPU goes out of control this function becomes disable h When the automatic backup operation is effective there is no error display for any error on the compressor stopping by detecting its anomaly 7 E...

Page 44: ...e pump down control switch is reset b Pump down operation can be performed with the operation of 3 dip switches SW5 1 Test run switch SW5 2 Test run operation mode and SW5 3 Pump down switch c Pump down procedure 1 Shut the liquid side service valve on the outdoor units 2 Turn SW5 2 test run operation mode ON cooling 3 Turn SW5 3 pump down switch ON 4 Turn SW5 1 test run switch ON d End condition ...

Page 45: ...and the liquid service valve is shut down if it is connected on CnY The pump down operation for replacement is performed iii Ending condition When starting conditions are lost When the pump down operation has ended b Status 2 Emergency stop operation i Starting condition When the pump down operation has ended in the status 1 ii Contents of control ON is output to CnZ1 and the gas service valve is ...

Page 46: ...liquid pipe 3 Output for valve to shut liquid pipe CNY Wiring part no PCZ006A051A Output for valve to shut gas pipe CNZ1 Wiring part no PCZ006A051B Need to use DC12V relay OMRON LY2F equivalent for output the CNY CNZ1 Keep less than 150mA at maximum with all CNY CNZ1 CNH 14 KX SM 202 ...

Page 47: ...ich are operating with the thermostat ON a Correction of target high low pressure i Starting condition either of or When the external input function assignment P07 P10 Multi system energy save control Valid When 7 segment P69 Multi system energy save control I ON if the external input function assignment P07 P10 is not assigned this control ii Contents of control During the outdoor unit operation ...

Page 48: ...ol ii Contents of control Compressor upper limit speed is the value obtained by multiplying with the upper limit speed restriction rate ac cording to the thermostat ON capacity The upper limit restriction rate is divided to the following 3 steps according to each setting of P16 as follows Following controls supersede this control 4 way valve safeguard Defrost operation Oil return operation Oil equ...

Page 49: ... jumps to the code No C10 9 The data of code No C54 and C55 can be erased independently The compressor cumulative operation time corresponding to the code No selected can be erased reset For resetting of the compressor cumulative operation time after replacement of compressor The resetting method is to select the code C54 or C55 first the compressor cumulative operation time corresponding to the c...

Page 50: ... down operation OPE Outdoor unit setting 2 If the state of 1 is reset it is automatically switched to CXX Automatic data display mode 3 When pressing SW8 or SW9 under the state of 1 it switched to CXX However the button input is not done for 10 seconds after switching to CXX the display is changed to the spe cial display according to the priority of the state 1 When Special display occurs When Spe...

Page 51: ...at exchanger temp 3 Entrance Front Tho R4 Heat exchanger temp 4 Entrance Rear Tho D1 Discharge pipe temp CM1 Tho D2 Discharge pipe temp CM2 Tho C1 Under dome temp CM1 Tho C2 Under dome temp CM2 Tho P1 Power transistor temp CM1 Tho P2 Power transistor temp CM2 Tho SC Sub cooling coil temp 1 Tho SC Sub cooling coil temp 2 Tho S Suction pipe temp CT1 Current CM1 CT2 Current CM2 EEVH1 Heating expansio...

Page 52: ... CNG2 SV8 SV10 52C1 52C2 CH1 0 1 0 1 Order of 100 CNS1 Order of 10 CNS2 Order of 1 CNG1 0 Close 1 Open Order of 100 CNG1 Order of 10 SV8 Order of 1 SV10 0 Close 1 Open 0 Close 1 Open Order of 100 CH2 Order of 10 20S Order of 1 20SL SV11 SV13 Order of 100 SV11 Order of 10 Spare Order of 1 SV13 0 Close 1 Open CNZ1 CNH CNY CNZ1 External output CNH Operation output CNY Error output 0 Close 1 Open Numb...

Page 53: ...control status Compressor stop causes Time elapsed after compressor stop cause Protection control causes 1 Compressor error causes 1 Counter Anomalous FMo1 Counter Anomalous FMo2 Counter Indoor outdoor communications error 1 FMo2 operating revolution command 0 999 10min 1 Demand ratio Outdoor operating mode pattern 0 127 1 1 1 Protection control causes 2 1 Protection control causes 3 0 127 1 0 127...

Page 54: ...fault 000 040 060 080 080 Factory default 000 040 060 080 080 Factory default 000 040 060 080 0 Factory default 0 3 0 Factory default 0 9 P07 P08 P09 P10 Many steps demand setting 2nd step demand Many steps demand setting 3nd step demand Multi system energy save control II 1 P17 P18 P19 P30 P31 P32 P33 P34 0 1 1 1 1 Superlink communication status Start automatic address setting Input stating indoo...

Page 55: ...During HP protection 1 Spare 2 During LP protection 3 During discharge temperature 4 During specific pressure protection 5 During under dome temperature protection 6 During current safe protection 7 During power transistor temperature protection 8 22 Code No Remarks Contents of display Data display range Minimum unit AUX AUE A01 A02 A03 A04 Auto address setting on Indoor unit address No assignment...

Page 56: ...ooding anomaly CM1 24 Liquid flooding anomaly CM2 25 Spare 26 Fan Compressor Communication error Outdoor DC fan motor anomaly FMo1 30 Outdoor DC fan motor anomaly FMo2 31 Current cut CM1 32 Current cut CM2 33 Power transistor overheat CM1 34 Power transistor overheat CM2 35 Compressor startup failure CM1 36 Compressor startup failure CM2 37 Communication error between inverter PCB and outdoor cont...

Page 57: ...n Data For the purpose to investigate the cause of trouble in the field the operation data are always saved in the memory and if the trouble occurs the data writing is stopped and the operation data prior to the trouble occurrence are recorded These data can be retrieved to personal computer through RS232C connector on the outdoor control PCB and utilized for probing the cause i Operation data for...

Page 58: ...5 A D value A D value A D value A D value 2 2 2 2 Heat exchanger temp 1 Exit Front Heat exchanger temp 2 Exit Rear Heat exchanger temp 3 Entrance Front Heat exchanger temp 4 Entrance Rear 07 08 09 10 20 140 20 140 15 90 15 90 A D value A D value A D value A D value 1 1 1 1 Tho D1 Discharge pipe temp CM1 Tho D2 Discharge pipe temp CM2 Tho C1 Under dome temp CM1 Tho C2 Under dome temp CM2 11 20 140 ...

Page 59: ...ndoor unit connection capacity Indoor unit thermostat ON number Indoor unit cooling thermostat ON capacity Required Hz total Suction pipe side 17 40 75 A D value 2 Receiver liquid surface detection temp 1 spare 22 0 00 5 00 A D value 1 High pressure sensor 23 0 00 2 00 A D value 1 Low pressure sensor 29 0 65535 2 Indoor unit heating thermostat ON capacity Stop Heating Cooling 0 1 2 30 0 2 1 Operat...

Page 60: ...ing angle EEVSC opening angle 0 65535 1pulse 2 EEVD opening angle 54 Target cooling low pressure of compressor 0 00 2 00 0 01MPa 1 Target heating high pressure of compressor 0 00 4 15 0 01MPa 2 1ºC 0 1ºC 59 60 61 1 1 1 Spare Spare Spare 1 63 1 Output of relay 64 1 Output of relay Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 52C2...

Page 61: ...ized operation 7 1 Oil equalized operation 7 2 Oil equalized operation 8 1 Oil equalized operation 8 2 None Oil return cooling 0 1 10 20 30 41 42 51 52 61 62 71 72 81 82 0 1 2 0 2 1 Control status Defrost kinds defrost status Control status Oil return Oil return gas cycle 0 11 12 13 14 21 22 23 24 31 32 33 34 Thermal condition defrost status 1 Thermal condition defrost status 2 Thermal condition d...

Page 62: ...3 Bit0 Auto backup operation Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Spare Spare Spare Spare 0 Count 1 Count up Spare Spare Spare 0 Normal 1 Practice 0 Count 1 Count up 0 Count 1 Count up 0 Count 1 Count up 0 Count 1 Count up 0 Count 1 Count up 0 Count 1 Count up 81 0 127 1 hour 1 Backup cumulative time 82 0 2 1 Check operation status 83 Spare Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 0 Normal 1 Practice...

Page 63: ... 0 5 Control status Cut off sensor counter 0 5 Control status Liquid flooding anomaly counter 101 102 Counter Current cut CM2 103 0 255 Counter Power transistor overheat CM1 104 0 255 Counter Power transistor overheat CM2 105 0 255 Counter Compressor startup failure CM1 106 0 255 Counter Compressor startup failure CM2 107 0 255 Counter Anomalous compressor by loss of synchronism CM1 108 0 255 Coun...

Page 64: ... Spare 0 Normal 1 Practice 0 Normal 1 Practice Spare 63H1 Bit0 Bit1 0 OFF 1 ON 124 1 External input Spare CNS1 CNS2 CNG1 CNG2 125 1 DIP SW SW 3 SW3 1 SW3 2 SW3 3 SW3 4 SW3 5 SW3 6 SW3 7 SW3 8 126 1 DIP SW SW 4 SW4 1 SW4 2 SW4 3 SW4 4 SW4 5 SW4 6 SW4 7 SW4 8 Bit0 Bit1 Bit2 Bit3 127 1 DIP SW SW 5 SW5 1 SW5 2 SW5 3 SW5 4 0 OFF 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 O...

Page 65: ...g setting 1 Target exit temperature 1 C 133 3 15 2 75 1 Heating setting 2 Target of high temperature 0 05MPa 134 30 38 1 Heating setting 3 Judgment temperature 1 C 135 0 9 1 CNS1 function assignment 136 0 9 1 CNS2 function assignment 137 0 9 1 CNG1 function assignment 138 0 9 1 CNG2 function assignment 139 0 9 1 External output function assignment function assignment 140 0 255 1 State in check ope...

Page 66: ... Pump down SW Normal Pump down SL selector New SL Auto Old SL Capacity measurement mode Capacity measurement mode Capacity measurement mode Data erase write 7 segment display code No increasing order of 1 7 segment display code No increasing order of 10 Model selection Spare Master slave unit setting address Master slave unit setting address Power supply voltage selection Power supply voltage sele...

Page 67: ...ous SL Normal Normal 0 Automatic Remarks Indoor unit address No Order of 10 Indoor unit address No Order of 1 Outdoor unit address No Order of 10 Outdoor unit address No Order of 1 Superlink selection Indoor unit address No Order of 100 0 9 0 9 0 9 0 9 Code Input Default setting 0 OFF 1 ON P15 0 0 0 0 1 P22 0 0 0 0 0 P28 1 0 0 0 0 P36 0 1 0 0 0 P45 0 0 1 0 0 P56 0 1 1 0 0 P71 0 0 0 1 0 P90 0 1 0 1...

Page 68: ...ring etc Is the failure related to any hardware parts SV main body coil capillary check valve sensor etc Is it a major component Compressor inverter PCB and outdoor DC fan motor Is it a failure of electrical component Error on indoor unit or outdoor unit Indoor unit Outdoor unit Is the remote control connected Was the power supply reset after the error occurred Check and write down the momentary d...

Page 69: ...re to wait for 3 minutes after turning the power circuit breaker off Disconnect the fan motor wires Both the power cable and control wires Turn the power circuit breaker OFF Wait 3 minutes Check whether DC15V between of CNI1 on the control PCB is detected Check E41 42 45 48 Connect the wires of fan motor 1 or 2 Power ON Test run switch ON If DC15V is detected primary check is completed Return to a...

Page 70: ...rimary side Site setting error 102 E36 E36 1 2 Discharge pipe temperature error Tho D1 D2 System error 103 E37 E37 1 2 E37 4 5 E37 5 6 Outdoor heat exchanger temperature thermistor Tho R and subcooling coil temperature thermistor Tho SC H anomaly Thermistor wire breakage 104 E38 E38 Outdoor air temperature thermistor anomaly Tho A Thermistor wire breakage 105 E39 E39 1 2 Discharge pipe temperature...

Page 71: ...idifying or heating operation from remote control Note 1 Outdoor 35ºC Indoor 27ºCDB 19ºCWB It is normal This unit is designed to start in the soft start mode by detecting the compressor under dome temperature when it restart after power reset It is necessary to replace to higher capacity unit or to install additional unit Compressor refrigerant oil protective control at starting is activated For t...

Page 72: ...ing operation from remote control Note 1 Outdoor 7ºC Indoor 20ºCDB It is normal This unit is designed to start in the soft start mode by detecting the compressor under dome temperature when it restart after power reset It is necessary to replace to higher capacity unit or to install additional unit Compressor refrigerant oil protective control at starting is activated For the contents of control r...

Page 73: ...esistance may drop to a few M Ω because of refrigerant migrated in the compressor When the earth leakage breaker is activated at lower insulation resistance check the following points 6 hours after power ON check if the insulation resistance recovers to normal When power ON crankcase heater heat up compressor and evaporates the refrigerant migrated in the compressor Check if the earth leakage brea...

Page 74: ...ate looseness Prevent the vibration from transmitting to wall and etc by fixing pipes on the wall tightly or wrapping rubber cushion around the pipe which goes through the hole in the wall or applying other appropriate means Strength of ceiling wall floor etc may be insufficient Review the installation place or apply reinforcement to increase the strength Check for leaning of installed unit or inc...

Page 75: ... liquid flows through inside of piping of air conditioner It is likely to occur particularly during cooling or defrosting in the heating mode It is normal The noise vibration occurs when the refrigerant starts or stops flowing It is normal When the defrosting starts or stops during heating mode the refrigerant flow is reversed due to switching 4 way valve This causes a large change in pressure whi...

Page 76: ...erant Intrusion of air nitrogen etc In such case it is necessary to recover refrigerant vacuum dry and recharge refrigerant Since there could be many causes of noise vibration the above may not cover all In such case check the conditions when where how the noise vibration occurs according to following check points and ask our consultation Indoor outdoor unit Cooling heating fan mode Startup stop d...

Page 77: ...etting YES NO Does the louver link press LS till crick sound can be heard NO NO YES NO NO YES In cases of FDTW FDTS and FDTQ Does the louver operate when power on Note 1 LM Louver motor 2 LS Limit switch YES NO NO NO NO YES YES Operate after waiting for more than 1 minute It is normal if LM can be stopped by pressing LS two times In cases of FDT FDTC FDE and FDK Check the remote control whether it...

Page 78: ... supply between of CNW0 OK Is DC5V detected between of CNW2 Is power supply to FM LM and etc OK Note 1 Check the fuse at the power supply side 1 2 3 4 Model equipped with transformer Tr㧵 Models other than shown at left Is DC18V or higher detected between Red Red CNW2 at the transformer secondary side Outdoor Noise filter PCB anomaly Replace it Wrong wiring or broken wires between outdoor and indoo...

Page 79: ...ry side Is DC18V detected between of CNW2 Disconnect the remote control wires NO Is DC15V or higher detected between X Y of indoor unit terminal block Model equipped with transformer Tr㧵 Models other than shown at left YES YES YES YES NO NO YES NO NO Correct it Replace wires Replace remote control Indoor power PCB anomaly Replace it Indoor control PCB anomaly Replace it Replace transformer Indoor ...

Page 80: ...IT Replace noise filter PCB Connect wires correctly Indoor control PCB anomaly Replace it Indoor outdoor control PCB anomaly Replace it Remote control anomaly Replace it Breakage of wires for remote control Replace it Correct the connecting wires between indoor and outdoor units Outdoor control PCB anomaly Replace it Breakage of connecting wire Noise Indoor control PCB anomaly Replace it 2 Error d...

Page 81: ...S NO Isn t there any short circuit between phases of noise filter Isn t there any crack or damage on power transistor module or diode stack Isn t there any anomaly on reactor Replace noise filter Replace reactor Replace inverter PCB Replace fuse 2 Error detection method 3 Condition of error displayed 4 Presumable cause Fuse blown Noise filter anomaly Anomalous connection of wire between PCBs Indoo...

Page 82: ... Is The fuse on indoor control PCB OK Is AC18V or higher is detected between Red Red at secondary side of indoor transformer 1 Is DC10 11V between X Y at indoor control PCB side when removing remote control Note 1 Model equipped with transformer Tr㧵 only Fuse blown Replace fuse Transformer anomaly Remote control wire short circuited Remote control anomaly Indoor control PCB anomaly Remote control ...

Page 83: ...tected between L1 L2 L2 L3 L3 L1 respectively at outdoor terminal block Is AC220 240V detected between L N at indoor terminal block NO NO NO NO NO YES YES YES YES YES YES A Refer next page WAIT Indoor control PCB anomaly Replace it Indoor control PCB anomaly Replace it Remote control anomaly Replace it Breakage of wires for remote control Replace it Correct the connecting wires between indoor and ...

Page 84: ...ere any anomaly on outdoor fan motor Once turn OFF the breaker and turn ON it again at 3 minutes after power OFF Does it become normal Check inverter before replacement of 52C NO NO NO NO NO NO YES YES YES YES YES YES A B Refer next page From previous page Normal Malfunction by temporary noise Replace noise filter Connect the connecting wire properly Correct connection In case of breakage of wire ...

Page 85: ...eplace electrolytic capacitor Replace reactor Isn t there any short circuit between phases at input terminal of inverter PCB Isn t there any crack or damage on power transistor module or diode stack Isn t there any anomaly on reactor Isn t there any anomaly on electrolytic capacitor NO NO NO NO NO B YES YES YES YES YES From previous page 2 Error detection method 3 Condition of error displayed 4 Pr...

Page 86: ... detected at remote control terminal Is DC10V or higher between X Y wires detected when removing remote control Are connecting wires between indoor and outdoor units connected properly Remote control anomaly Remote control anomaly Correct connecting wire Indoor control PCB anomaly 2 Error detection method 3 Condition of error displayed 4 Presumable cause Fuse blown Noise filter anomaly Anomalous c...

Page 87: ... Note 2 Does the remote control displays Internal check ON even after 3 minutes Reset power supply 2 1 NO Malfunction by temporary noise Check peripheral environment Indoor control PCB anomaly Replace it Remote control anomaly Replace it 2 Error detection method When normal communication between remote control and indoor unit is interrupted for more than 2 minutes Detectable only with the remote c...

Page 88: ... supply is reset addresses will not be confirmed YES NO YES NO YES NO Review number of connected units Correct indoor unit address setting Implement test run Replace indoor control PCB Before replacement confirm whether the rotary switch for address setting is not damaged It was experienced that No 5 on rotary switch was not recognized 2 Error detection method More than 129 indoor units are connec...

Page 89: ...es to E5 In both cases check signal line wired locally YES Is the outdoor unit address set on the indoor unit OK YES Is the LED on indoor control PCB OK YES Is protective fuse for the Superlink circuit blown NO Does E3 E5 occurs YES NO NO NO YES YES NO NO Temporary malfunction by noise Identify the source of noise and correct it Change to spare circuit Indoor control PCB anomaly Replace it Correct...

Page 90: ...breakage of signal wires between indoor and outdoor units YES NO YES NO YES NO In case that indoor red LED flashes 2 times Repair signal wires Repair signal wires Go to the diagnosis of WAIT 1 Unit is normal Malfunction by temporary noise etc Outdoor control PCB anomaly Network communication circuit anomaly Replace it Unit is normal Malfunction by temporary noise etc 2 Error detection method When ...

Page 91: ...sistance characteristics of indoor heat exchanger temperature thermistor ThI R1 R2 R3 5kΩ at 25ºC Temperature ºC Insert the connector securely Replace thermistor ThI R Replace indoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of ThI R1 R2 R3 3 Condition of error displayed If 50ºC or lower is detected for 5 seconds continuously compressor stops After 3 ...

Page 92: ...al times to prove any poor connection 15 10 5 0 10 30 40 20 50 Temperature sensor resistance k Ω Temperature C 5kΩ at 25 C Insert the connector securely Replace thermistor ThI A Replace indoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of ThI A 3 Condition of error displayed If 50 C or lower is detected for 5 seconds continuously compressor stops After...

Page 93: ...pe slop OK NO YES NO YES NO NO YES Check float switch Check the connection of CNI If it is loose connect it securely Replace indoor control PCB Check optional equipment Correct setting to Humidifier drain motor interlock Indoor control PCB or power PCB FDTC anomaly Replace it Check the wiring of drain motor Correct it Check drain motor 2 Error detection method Float switch is activated 3 Condition...

Page 94: ...Applicable model 5 Troubleshooting All models Diagnosis Countermeasure Aren t more than 17 indoor units connected to one remote control NO YES Remote control anomaly Replace it Reduce to 16 or less units 2 Error detection method When it detects more than 17 of indoor units connected to one remote control 3 Condition of error displayed Same as above 4 Presumable cause Excessive number of indoor uni...

Page 95: ...ing the Master IU address set function of remote control 3 Condition of Error displayed Same as above 4 Presumable cause Same as above Note Is Master IU address set function of remote control used E11 occurs YES Error code Remote control LED Green Red Indoor Content IU IU IU R C In case the wiring is below and Master IU address set is used E11 is appeared Error code Remote control 7 segment displa...

Page 96: ...ror displayed Same as above 4 Presumable cause Mistake in address setting for indoor unit Note Address setting method list Figures in are for Previous Superlink models Models for new Superlink protocol Models for Previous Superlink protocol Indoor unit address setting Outdoor unit address setting Indoor unit address setting Outdoor unit address setting Indoor unit No SW Outdoor unit No SW Outdoor ...

Page 97: ... the fan motor Check power supply voltage Replace fan motor and power PCB Replace fan motor If the anomaly persists after replacing the fan motor replace the indoor control PCB Malfunction by temporary noise 2 Error detection method Detected by revolution speed of indoor fan motor 3 Condition of error displayed When actual revolution speed of indoor fan motor drops to lower than 200min 1 for 30 se...

Page 98: ...he address setting for the master indoor unit correct Correct the address setting of Supply the power to the master Connect the Superlink signal Indoor control PCB anomaly slave indoor unit If it is not the master indoor unit as well Are the Superlink signal wires connected between master and slave indoor units 1 When the address setting for the master indoor unit is not existing in the same Super...

Page 99: ...rgetting to turn OFF SW7 1 after indoor operation check Note Indoor operation check drain pump check mode If the power is ON after SW7 1ON indoor operation check drain pump check mode can be established 1 When the communication between remote control and indoor PCB is established 15 seconds after power ON it goes to indoor operation check 2 When the communication between remote control and indoor ...

Page 100: ...and FDK Remove foreign material Replace the fan motor Check power supply voltage Replace fan motor and power PCB Replace fan motor If the anomaly persists after replacing the fan motor replace the indoor control PCB Malfunction by temporary noise 2 Error detection method Detected by rotation speed of indoor fan motor 3 Condition of error displayed When the actual fan rotation speed does not reach ...

Page 101: ...lace indoor control PCB 2 Error detection method Panel switch PS has detected Open for more than 1 second 3 Condition of Error displayed Same as above 4 Presumable cause Defective panel switch Disconnection of wiring Defective indoor control PCB Note Does matter improve if panel switch is turned ON forcibly after resetting error Is grill opened NO YES NO YES YES Are connectors at right inserted pr...

Page 102: ... cause Anomalous connection of remote control temperature thermistor Remote control temperature thermistor anomaly Remote control PCB anomaly Note After 10 seconds has elapsed since remote control temperature thermistor was switched from invalid to valid E28 will not be displayed even if the thermistor harness is disconnected or broken However in such case the indoor return air temperature thermis...

Page 103: ... recognized 2 Error detection method When the microcomputer of outdoor control PCB recognizes the duplicated address No by scanning all addresses of outdoor units in the same Superlink system 3 Condition of error displayed When duplicated outdoor unit address No exists in the same Superlink system 4 Presumable cause Mistake in the address setting of outdoor units More than 129 indoor units connect...

Page 104: ...ing It will be useful to persuade the customer why an improvement of power supply is required by showing these data Propose an improvement to the customer Check it as much as possible under the operating conditions for 30 minutes before error occurred Replace outdoor control PCB Check the connection of wire Wait and see without taking any action 2 Error detection method By Checking the power suppl...

Page 105: ...t connector securely Check if the characteristics are correct by referring the characteristics chart of E39 And if necessary replace the discharge pipe temperature thermistor Check it as much as possible under the operating conditions for 30 minutes before error occurred Wait and see Continue to obtain data if possible Keep connecting the Mente PC Replace outdoor control PCB Replace the coil SV1 2...

Page 106: ...ual measured value Insert the connector securely Replace thermistor Tho SC Tho H Tho R Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho R or Tho SC or Tho H 3 Condition of error displayed If 50 C or lower is detected for 5 seconds continuously within 2 minutes to 2 minutes 20 seconds after the compressor ON the compressor stops And aft...

Page 107: ...sensed value Compare the temperature on Mente PC with actual measured value Insert the connector securely Replace thermistor Tho A Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho A 3 Condition of error displayed If 30 C or lower is detected for 5 seconds continuously within 2 minutes to 2 minutes 20 seconds after the compressor ON the...

Page 108: ...ping Check the sensed value Compare the temperature on Mente PC with actual measured value Insert the connector securely Replace thermistor Tho D1 or D2 Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho D1 D2 3 Condition of error displayed If 3 C or lower is detected for 5 seconds continuously within 10 minutes to 10 minutes 20 seconds ...

Page 109: ...on If the high pressure sensor PSH fails replace it If the connector is disconnected or the harness is broken correct it Also check whether the high pressure switch is properly mounted or not Check the open N phase on power supply Open operation valve Check it as much as possible under the operating conditions for 30 minutes before error occurred Replace outdoor control PCB Remove clogs Check item...

Page 110: ...ly and restart After power OFF Is inverter cooling fan running NO YES NO YES NO Does it repeat after restarting operation YES NO After power OFF After power ON Is power transistor characteristic OK 1 NO YES Are power transistor sensor connectors connected properly Check short circuit broken wire NO Is power transformer attached properly Check tightness of screw heat radiation silicon NO Is 15V det...

Page 111: ... Check record operating condition Check pressure for anomaly Wait and see Replace compressor Wait and see Replace compressor on which error occurred initially Replace power transistor Replace power transistor Replace inverter PCB Save data for 30 minutes before stopping in Mente PC Evaluate data 30 minutes earlier YES YES YES YES YES YES NO NO NO NO Power transistor error Short circuited Good If e...

Page 112: ... ON the dip switch SW5 4 on the outdoor control PCB However since this tentative solution could cause trouble be sure to correct it as soon as possible Signal wire may be connected to other outdoor unit system Correct the signal wire Correct addresses Either one of addresses is wrong If the address corrected with rotary switch is still wrong replace control PCB Defective rotary switch Before repla...

Page 113: ...YES YES Is the characteristics of Tho C1 2 OK Check and save the data of operating condition Check the ROM version Confirmation of SV1 2 operation Correct the connection of refrigerant piping and or signal wiring properly Adjust refrigerant amount properly Replace SV1 2 Replace the coil of SV1 2 Replace EEVSC Check the coil of EEVSC Replace the coil of EEVSC Replace Tho H Replace PSL Replace indoo...

Page 114: ...ating condition 30 minutes earlier than the error as much as possible Replace control PCB NO NO NO NO NO NO Isthereshort circuitorbrokenwirebetweendiodemodules YES NO NO YES Is green or red LED flashing or lighting on inverter PCB Save data for 30 minutes before stopping in Mente PC Power ON Is surge suppressor resistor coil broken Power OFF Power OFF YES YES YES NO YES YES YES YES Disconnect harn...

Page 115: ...Correct signal line In case of automatic address setting signal line cannot be connected to other outdoor unit system Test run Replace outdoor control PCB Rotary switch anomaly Before replacement please confirm whether the rotary switch for address setting is not damaged It was experienced that No 5 on rotary switch was not recognized 2 Error detection method If the signal line of a outdoor unit s...

Page 116: ... E48 2 2 time flash FMO2 Inspect also the fan motor 2 even if it is E48 1 Inspect also the fan motor 1 even if it is E48 2 Replace fan motor Replace inverter PCB on 1 line When inverter PCB is replaced check also items further than 2 see next page Checking of blown surge suppressor resister coil and short circuit on power transistor and diode Replace fan motor Replace inverter PCB Replace faulty f...

Page 117: ... Defective surge suppressor resistor Note 1 Measurement position Between pins 2 3 of IC3 on control PCB If it fails to repeat connect the Mente PC and continue to collect data 1 E48 1 1 time flash FMO1 E48 2 2 time flash FMO2 Inspect also the fan motor 2 even if it is E48 1 Inspect also the fan motor 1 even if it is E48 2 Power OFF From previous page Does speed command voltage of control PCB rise ...

Page 118: ...el of the unit Check whether the service valves are open Correct the connection of low pressure sensor connector Replace low pressure sensor Replace outdoor control PCB Correct the connection of temperature thermistor connector of heat exchanger Replace temperature thermistor of heat exchanger at evaporator side Replace control PCB at evaporator side Replace EEV coil Replace EEV main body or strai...

Page 119: ... automatically after 3 minutes delay if this anomaly occurs 3 times within 40 minutes 4 Presumable cause Broken thermistor harness or the internal wire of sensing section Check the molded section as well Disconnection of thermistor harness connection connector Outdoor control PCB anomaly Note 1 E55 1 Tho C1 E55 2 Tho C2 2 E53 E53 E55 1 time flash E55 2 2 time flash 5kΩ at 25 ºC Temperature ºC Temp...

Page 120: ...the data of operating conditions Check the conditions whether it occurs immediately after the power on or during operation or stopping Check the sensed value Insert the connector securely and restart operation Temporary malfunction by noise Correct if the source of noise is specified Replace sensor PSH PSL Replace outdoor control PCB 2 Error detection method Detection of anomalous pressure voltage...

Page 121: ...r during operation or stopping Check the sensed value Compare the temperature of Mente PC data with actual measured value Insert the connector securely Replace power transistor temperature thermistor Tho P1 P2 Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho P1 P2 3 Condition of error displayed When the outdoor air temperature is above...

Page 122: ... ON after 1 hour if possible and operate again Change wire connections on inverter and compressor and operate again Is it initial startup within 1 hour after power ON Is there record of replacement of inverter PCB Is 15 V detected on inverter PCB Check inverter PCB for defect with the checker Other Including checker not available Power transistor error Short circuited Good Check resistance between...

Page 123: ...t increase 11Hz or higher 3 Condition of error displayed If the compressor fails to startup for 20 times 10 patterns x 2 times continuously 4 Presumable cause Anomalous voltage of power supply Anomalous components for refrigerant circuit Inverter PCB anomaly Loose connection of connector or cable Compressor anomaly Motor or bearing Note 3 Measurement position Between and of C19 4 Measurement posit...

Page 124: ... outdoor units OK Correct Replace the outdoor unit PCB Anomalous noise etc 2 Error detection method E61 is displayed on 7 segment LED 3 Condition of error displayed When the communication between master unit and slave units is not established 4 Presumable cause Signal wire anomaly Outdoor control PCB anomaly Inverter PCB anomaly Rush current prevention resistor anomaly Note 1 E61 1 1 time flash Sl...

Page 125: ...heck the conditions whether it occurs immediately after the power on or during operation Replace remote control PCB Replace indoor control PCB Check the cause of emergency stop It is better to have the data for 30 minutes before stopping when instructing the installer 2 Error detection method When ON signal is inputted to the CnT terminal of indoor control PCB 3 Condition of error displayed Same a...

Page 126: ...rious injury if proper safety procedures and instructions are not adhered to Indicates a potentially hazardous situation which may result in minor or moderate injury if proper safety procedures and instructions are not adhered to WARNING Securely replace PCB according to this following instruction If PCB is incorrectly replace it will cause an electric shock or fire Be sure to check that the power...

Page 127: ...ectors is implemented compared with the former PCB When connecting the connectors after exchanging the PCB Check the color and name of the connectors please note the faulty connections Control PCB voltage measurement point between F1 DS1 Target PCB Fig ２ Voltage measurement points rg After elapsing 3 minutes from power OFF ...

Page 128: ...bstrate The PCB replace under current carrying will cause an electric shock of fire After finishing the PCB replacement check that wiring is correctly connected with the PCB before power distribu tion If the PCB is incorrectly replaced it will cause an electric shock or fire CAUTION Bundle the wiring so as not to tense because it will cause an electric shock WARNING CAUTION CNI2 CNR JSW10 11 CNI3 ...

Page 129: ...ction binder is set in each hole of the inverter PCB of P N U V and W beforehand Then tighten the harness snubber capacitor and the power transistor with the screw together Fig 3 Installation method to power transistor Terminal Harness Snubber capacitor Inverter PCB Power transistor Connection binder Metallic pillar DM DM Set the harness wires to be fixed to U and W with screws in respective holes...

Page 130: ...G and CAUTION are described as follows WARNING Indicates an imminently hazardous situation which will result in death or serious injury if proper safety procedures and instructions are not adhered to CAUTION Indicates a potentially hazardous situation which may result in minor or moderate injury if proper safety procedures and instructions are not adhered to WARNING Securely exchange the transisto...

Page 131: ... Cold weather region SW4 Model selection Switch Model SW4 1 2 3 4 FDC280 ON OFF OFF OFF FDC335 OFF ON OFF OFF FDC400 OFF OFF ON OFF FDC450 ON OFF ON OFF FDC475 ON ON OFF OFF FDC500 OFF ON ON OFF FDC560 ON ON ON OFF SW4 Master Slave setting Outdoor unit SW4 7 SW4 8 Master OFF OFF Slave 1 ON OFF Slave 2 OFF ON ON OFF Function SW5 1 ON Test run switch test run OFF Test run switch Normal SW5 2 ON Test...

Page 132: ... Tho S CNTH Suction pipe thermistor Tho SC CNF1 Subcooling coil thermistor 1 Tho H CNF2 Subcooling coil thermistor 2 CT1 Current sensor CM1 CT2 Current sensor CM2 PSH CNL1 High pressure sensor PSL CNL2 Low pressure sensor 63H1 1 CHQ1 High pressure switch CM1 63H1 2 CHQ2 High pressure switch CM2 CNS1 External operation input CNS2 Demand input CNG1 Forced operation input cooling heating CNG2 Silent ...

Page 133: ... ON s t i g i d 2 o N t i n u r o o d t u o W S g n i t t e s s s e r d d A SW1 Defrost recover temp Defrost start temp External input select level pulse D C reactor Printed wiring board PCB PWB1 3 C1 1 2 IPM t l o v l e d o m p u t e S Inspection Red LED1 LED2 LED3 J11 12 J13 J14 J15 t i g i d 1 o N t i n u r o o d t u o W S g n i t t e s s s e r d d A n e e r G l a m r o N Service green for serv...

Page 134: ...ver temp Defrost start temp External input select level pulse D C reactor Printed wiring board PCB PWB1 3 C1 1 2 IPM t l o v l e d o m p u t e S Inspection Red LED1 LED2 LED3 J11 12 J13 J14 J15 t i g i d 1 o N t i n u r o o d t u o W S g n i t t e s s s e r d d A n e e r G l a m r o N Service green for service SV1 Solenoid valve CM1 bypass J16 Spare L3 D C reactor FMC1 Fan for IPM SV6 Solenoid val...

Page 135: ...NA Z PSL CT1 CT2 PSH SW2 Inspection LED reset Auto backup operation Regular operation SW3 1 SW3 2 OFF ON s t i g i d 2 o N t i n u r o o d t u o W S g n i t t e s s s e r d d A SW1 Defrost recover temp Defrost start temp External input select level pulse D C reactor Printed wiring board PCB PWB1 3 C1 1 2 C2 1 2 IPM t l o v l e d o m p u t e S Inspection Red LED1 LED2 LED3 J11 12 J13 J14 J15 t i g ...

Page 136: ...i R2 Thermistor Entrance Thi A Thermistor Thermistor Exit Thi R3 Thermistor Bend Thi R1 Thi R2 Thermistor Thi A Thermistor Entrance Thermistor Exit Thi R3 Heat exchanger Outdoor unit Indoor unit For outdoor unit 2 Electronic expansion valve EEVSC Check joint High pressure sensor PSH 4way valve Sub cooling coil Thermistor Tho SC Tho C1 Thermistor Compressor 1 CM1 Oil separator Check valve Thermisto...

Page 137: ... Thermistor Entrance Thi A Thermistor Thermistor Exit Thi R3 Thermistor Bend Thi R1 Thi R2 Thermistor Thi A Thermistor Entrance Thermistor Exit Thi R3 Heat exchanger Outdoor unit Indoor unit For outdoor unit 2 Electronic expansion valve EEVSC Check joint High pressure sensor PSH 4way valve Sub cooling coil Thermistor Tho SC Tho C1 Thermistor Compressor 1 CM1 Oil separator Check valve Thermistor Th...

Page 138: ...stor Thi A Thermistor Entrance Thermistor Exit Thi R3 Heat exchanger Outdoor unit Indoor unit For outdoor unit 2 Electronic expansion valve EEVSC Check joint High pressure sensor PSH 4way valve Sub cooling coil Thermistor Tho SC Service valve Receiver Tho A Sub cooling coil Thermistor Tho S Tho R2 Tho R1 Thermistor Muffler Heat exchanger Strainer Electronic expansion valve Strainer Indoor unit Therm...

Page 139: ...rged hot air or operating sound of the outdoor unit can bother neighborhood Locations where outlet air of the outdoor unit blows directly to an animal or plants The outlet air can affect adversely to the plant etc Locations where vibration and operation sound generated by the outdoor unit can affect seriously on the wall or at the place near bed room Locations where an equipment affected by high h...

Page 140: ...l When the installation work is completed give instructions to the customer and ask him her to keep it Attached on the side panel below the operation valve Capacity 280 335 400 450 475 500 560 615 670 735 800 850 900 950 1000 1060 1120 1200 1250 1300 1350 1425 1450 1500 1560 1620 1680 Combination patterns Single Single Single Single Single Single Single Combination 280 335 Combination 335 335 Comb...

Page 141: ... to cause the problem 〇 Do not install the unit in places which exposed to sea breeze e g coastal area or calcium chloride e g snow melting agent exposed to ammonia substance e g organic fertilizer 2 1 Selecting the installation location room for maintenance work passage draft and piping If your installation condition requirements set out on this drawing please consult with your distributor or the...

Page 142: ... m or less 90 m or less However difference between the longest and shortest piping 40 m or less Max 85 m or less 1 1 When it is required to install in a range of 40 to 85 m limitation of use etc are different from those described here Refer to technical documents Allowable elevation difference head difference a When an outdoor unit is installed above 50 m or less Max 70 m or less 2 2 When it is re...

Page 143: ...nit Use C1 e Selecti Size of Select i Tota to 4 2 Pipe connection position and pipe direction 5 Select a Method As an downs Please no b Header Depen For the Plea Gas pipe Liquid pipe Gas pipe Liquid pipe φ22 22 t 1 0 φ25 4 φ22 22 t 1 0 φ25 4 φ28 58 t 1 0 φ28 58 t 1 0 φ31 8 t 1 1 φ34 92 t 1 2 φ38 1 t 1 35 φ34 92 t 1 2 φ9 52 t 0 8 φ12 7 t 0 8 φ15 88 t 1 0 φ19 05 t 1 0 φ38 1 t 1 35 φ34 92 t 1 2 φ25 4...

Page 144: ...ty downstream Less than 180 180 or more but less than 371 371 or more but less than 540 540 or more Branching pipe set DIS 22 1G DIS 180 1G DIS 371 1G DIS 540 3 Total capacity downstream Less than 180 180 or more but less than 371 371 or more but less than 540 540 or more Header set model type HEAD4 22 1G HEAD6 180 1G HEAD8 371 2 HEAD8 540 3 Number of branches 4 branches at the most 6 branches at ...

Page 145: ...nimal enters from the pipe port cover the port with appropriate blocking materials to be arranged on the user s part Use an elbow to be arranged on the user s part to connect control valves to the piping In anchoring piping on the installation site give 1 5m or a longer distance between an outdoor unit and an anchoring point where the piping is secured as illustrated below A failure to observe thi...

Page 146: ...ventional tool 0 0 5 0 7 1 3 s part ed as CAUTION If you tighten it without using double spanners you may deform the outdoor unit Tightening torque N m Service valve size mm Tightening angle Tightening torque N m Recommendedlengthoftoolhandle mm φ6 35 1 4 14 18 45 60 150 φ9 52 3 8 34 42 30 45 200 φ12 7 1 2 49 61 30 45 250 φ15 88 5 8 68 82 15 20 300 φ19 05 3 4 100 120 15 20 450 Use a torque wrench ...

Page 147: ...ressor failure Airtighteness test completed Vacuuming begins Vacuuming completed Fill oil Fill refrigerant Please run the vacuum pump for at least one hour after the vacuum gauge shows 101kPa or lower 755mmHg or lower C after leaving the system for an hour or more 3 Additional oil charge When the total pipe length is longer than 510 m charge 1 000 cc of M MA32R refrigeration machine oil from the c...

Page 148: ...dew condensation Improper heat insulation anti dew dressing can result in a water leak or dripping causing damage to household effects etc Use a heat insulating material that can withstand 120 or a higher temperature Poor heat insulating capacity can cause heat insulation problems or cable deterioration a The gas pipe can cause during a cooling operation dew condensation which will become drain wa...

Page 149: ...onduits i Please do not lay electronic control cables remote control and signaling wires and other high current cables together outside the unit Laying them together can result in malfunctioning or a failure of the unit due to electric noises j Power cables and signaling wires must always be connected to the power cable terminal block and secured by cable fastening clamps provided in the unit k Fa...

Page 150: ... terminals refer to the list shown at right When electrical installation work is completed make sure that all electrical components within the electrical component box are free of loose connector coupling or terminal connection Request When connecting to the power supply terminal block use the crimp terminals for M6 as shown at right When connecting to the signal terminal block use the crimp termi...

Page 151: ... Never connect wires for 220 240 V or 380 415 V Protective fuse on the PCB will trip Before turning the power on check the resistance on the signal cable terminal block If it is less than 100Ω power supply cables may be connected to the signal cable terminal block When units of FD KXE6 Series FD KXZE1 series are connected Standard resistance value 5 100 Number of connected units When units of FD A...

Page 152: ...ch other When signal lines linking plural refrigerant systems are provided between indoor units When only one refrigerant system is involved signal lines do not link plural refrigerant systems When plural refrigerant systems are linked with signal lines e g to implement centralized control Network connector Outdoor unit Outdoor unit Outdoor unit Outdoor unit Indoor unit Indoor unit Indoor unit Ind...

Page 153: ...uplicate with other indoor No on the network Above list is an example The address on the network is master unit 1 for the slave unit If the slave unit address is larger than 31 or 47 for old SL the address is assigned sequentially starting from 00 When setting sequential addresses take care not to duplicate the master unit address in the refrigerant system B with addresses of slave units in the re...

Page 154: ...dress start Input a starting address and the number of connected indoor units Input a starting address in P32 on the 7 segment display panel of each outdoor unit master unit in case of combination When a starting address is entered the display indication will switch back to the Number of Connected Indoor Units Input screen Input the number of connected indoor units from the 7 segment display panel...

Page 155: ...an address after automatic address setting you can change it from the remote control unit with its Address Change function or by means of manual setting Set a unique address by avoiding the address assigned to other indoor unit on the network when the address is changed Do not turn on power to centralized control equipment until automatic address setting is completed When addresses are set be sure...

Page 156: ...ss the switch to select END If you have finished changing addresses press the SET switch while END is shown While new settings are being transmitted SET COMPLETE will be indicated Then the remote control display will change to the normal state If you want to end the session without reflecting new address settings Before you complete the present address setting session press the ON OFF switch Then ...

Page 157: ...1 When both of external input function assignment P07 10 and SW are changed the control is changed Ex When CnS1 is used for the input of forced cooling cooling mode set P07 at 2 and SW3 7 to ON When CnS2 is used for the input of forced cooling cooling mode set P08 at 2 and SW3 7 to ON 2 Under the energy save control the capacity control becomes valid even if no signal is input to the external inpu...

Page 158: ...External operation input 1 Demand input 2 Cooling heating force input 3 Silent mode 1 1 4 Spare 5 Outdoor fan snow control input 6 Test run external input 1 SW5 1 equivalent 7 Test run external input SW5 2 equivalent 8 Silent mode 2 2 9 Demand input 10 AF periodic inspection display 11 AF error display 12 Building multi energy save control Permitted 3 Heating Valid Valid Test run start Cooling Val...

Page 159: ...king cannot be obtained Practice the check operation within the operation temperature ranges Outdoor temperature 0 43 C room temperature 10 32 C Check operation will not start out of these ranges Outdoor air processing unit cannot be checked It is possible to check indoor units other than the outdoor air processing unit of the same refrigerant line Check operation allows proving the following poin...

Page 160: ...such occasion refer to the separate technical data Abnormal indoor unit No Abnormal indoor unit No 1 Guideline of accuracy 8 3 Refrigerant quantity check Even if the check operation is not practiced the test run and normal operation can be performed For further details regarding the check operation refer to the technical data It must be noted that during the check operation the outdoor units and t...

Page 161: ...e contents of remedy And then repeat the check operation Display on 7 segment indicator after the check operation Displayed on master unit only in case of combination Code indicator Data indicator Meaning Remedy Co Hi Refrigerant quantity over Too much refrigerant is charged Reduce the quantity Guidelines of reduction Single machine 10 kg Combination machine 20 kg Make sure to recover the refriger...

Page 162: ...run will start The screen display will be switched to COOLING TEST RUN b Termination of a cooling test run When the START STOP button or the TEMP SET button is pressed a cooling test run will be terminated Notes for engineers undertaking piping or electrical installation work When a test run is completed please make sure again that the electrical component box cover and the main body panel have be...

Page 163: ...ant quantity E is the connecting number of indoor units of refrigerant reduction 0 5 kg Outdoor unit capacity Total indoor units capacity Indoor units list of the refrigerant reduction Example X 19m 20m Y 9m 10m Outdoor unit capacity 560 Total indoor units capacity 643 FDT90 FDT140 FDUM140 FDT71 FDU112 FDUM90 The number of indoor units of the refrigerant reduction 3 units FDT140 FDUM140 FDUM90 3 u...

Page 164: ...58 IDφ25 4 IDφ28 58 IDφ25 4 344 479 125 IDφ12 7 IDφ22 22 IDφ12 7 IDφ19 05 IDφ15 88 IDφ12 7 DOS 3A 3 Branch pipe 1 Branch pipe 2 Branch pipe 1 Branch pipe 2 618 673 218 IDφ25 4 IDφ28 58 IDφ31 75 IDφ28 58 IDφ38 1 IDφ38 1 344 479 125 IDφ12 7 IDφ22 22 IDφ12 7 IDφ19 05 IDφ15 88 IDφ12 7 534 774 164 IDφ22 22 IDφ19 05 IDφ15 58 IDφ12 7 IDφ12 7 IDφ9 52 IDφ19 05 458 563 220 IDφ31 75 IDφ28 58 IDφ38 1 IDφ28 58...

Page 165: ...pipe set or a different diameter joint with a pipe cutter to make it fit for a selected pipe size before application Attention In cutting pipes always use a pipe cutter Remove burrs from a cut end when you cut a pipe In doing so keep a cut end downward so that no chips or burrs may enter the pipe Take utmost care so that no foreign matter such as dust or water may enter piping during installation ...

Page 166: ...owever select DIS 22 1G Even if the capacity of connected indoor units reaches 180 or higher select DIS 22 1G Total capacity downstream Branching pipe set model type less than 180 DIS 22 1G 180 or higher less than 371 DIS 180 1G 371 or higher less than 540 DIS 371 1G 540 or more DIS 540 3 Attention Use a pipe conforming to a pipe size specified for indoor unit connection for the section between an...

Page 167: ...112 224 36 80 56 160 45 28 56 140 1394 DIS 540 3 Branch pipe 2 Combined total capacity of indoor units connected downstream 140 160 90 45 112 224 36 80 56 160 45 28 56 140 1372 DIS 540 3 Branch pipe 3 Combined total capacity of indoor units connected downstream 112 224 36 80 56 160 45 28 56 140 937 DIS 540 3 Branch pipe 4 Combined total capacity of indoor units connected downstream 224 36 80 56 16...

Page 168: ...front panel upward by approx 10 mm to release claws When the claws are released pull the front panel to this side to remove b Right front panel Tilt at first the top of right front panel to this side in order to avoid interference with the front panel Upper which is installed at the top In this condition slide the front panel upward by approx 10 mm to release claws When the claws are released pull...

Page 169: ...g Refrigeration Division 16 5 Konan 2 chome Minato ku Tokyo 108 8215 Japan http www mhi co jp Because of our policy of continuous improvement we reserve the right to make changes in all specifications without notice Copyright MITSUBISHI HEAVY INDUSTRIES LTD c ...

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