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Panasonic U-4LE2E5, Service Manual & Test Run Service Manual

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Panasonic U-4LE2E5 Service Manual & Test Run Service Manual Download Page 45

1 - 35

Mini VRF SYSTEM 

Control Functions - Outdoor unit

1

12. Outdoor Unit Control PCB

(1)  Outdoor Unit Control PCB 

 U-4LE2E5, U-5LE2E5, U-6LE2E5

U-4LE2E5, U-5LE2E5, U-6LE2E5

LED2

LED1

SW2

SW1

CN-HPS

RUN

TEST

CN-EXG

STOP

CN-TO

CN-SCG

CHK

CN-MOV1

CN-SILENT

CN-ROM 

SA1

CN-OC

CN-EMG

CN-RC

CN-MOV4

CN-TERMINAL

CN-LPS

AP

MODE

A.ADD

DEF

SW4

SW3

CN-SCT

CN-EXL

CN-DISCH

JP001

TD831186-00_欧州向け Mini VRF TD.indb   2

16/06/22   8:32:48

NO.  of I/U

SM830258-01_欧州向け_1fan_mini_VRF.indb   35

18/03/06   9:09:54

Summary of Contents for U-4LE2E5

Page 1: ...ANUAL TEST RUN SERVICE MANUAL Order No SBPAC1706004CE Mini VRF SYSTEM Model No Outdoor Units HP horsepower Type Outdoor Unit Type Rated Capacity 4 HP 5 HP 6 HP LE2 mini VRF System U 4LE2E8 U 5LE2E8 U...

Page 2: ...tte Ducted S 15MF2E5A S 22MF2E5A S 28MF2E5A S 36MF2E5A S 45MF2E5A S 56MF2E5A S 60MF2E5A M1 Slim Low Static Ducted S 15MM1E5A S 22MM1E5A S 28MM1E5A S 36MM1E5A S 45MM1E5A S 56MM1E5A P1 Floor Standing S...

Page 3: ...ion sites and maintenance conditions If you require help for a special problem contact our sales service outlet or your certified dealer for additional instructions In Case of Improper Installation Th...

Page 4: ...switching from grid power to off grid generator power or vice versa to provide power for the air conditioner be sure to follow the guidelines below Otherwise the air conditioner may malfunction due to...

Page 5: ...m any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit CAUTION WARNING This product must not be modified or di...

Page 6: ...f suffocation if its density should rise excessively Suffocation from leakage of refrigerant is almost non existent With the recent increase in the number of high density buildings however the install...

Page 7: ...R410A is a non azeotrope recharging the refrigerant in gas form can lower performance and cause defects in the unit 2 2 Since refrigerant composition changes and performance decreases when gas leaks...

Page 8: ...0 on the refrigerant charge label supplied with the product The filled out label must be adhered in the proximity of the product charging port e g onto the inside of the service cover 1 Factory refrig...

Page 9: ...Room Temperature Control 2 2 2 Heating Standby 2 4 3 Automatic Fan Speed Control 2 5 4 Indoor Unit MOV Control 2 6 5 Drain Pump Control 2 6 6 Automatic Heating Cooling Control 2 7 7 Discharge Air Temp...

Page 10: ...ction 6 TROUBLE DIAGNOSIS 6 1 1 Contents of Remote Controller Switch Alarm Display 6 2 2 Outdoor Unit Control Panel LED Display 6 4 3 Mini VRF Alarm Codes 6 5 4 Inspection and Characteristics of Parts...

Page 11: ...PCB 1 10 4 Outdoor Unit Fan Control 1 12 5 Outdoor Unit CCU command controller unit Control 1 16 6 Oil Control 1 21 7 4 Way Valve Adjustment Control 1 23 8 Defrost Control 1 24 9 Demand Control 1 26...

Page 12: ...e 1 1 Setting item At shipment from factory Settable range System address 1 System 1 30 No of indoor units 1 1 12 units Table 1 2 4 HP 5 HP 6 HP Maximum number of connected indoor units 7 10 8 12 9 12...

Page 13: ...2 If the low pressure is over 1 6MPa during operation of the inverter compressor the system is stopped P27 Pre trip Type of outdoor unit 4HP 5HP 6HP Minimum frequency Hz 1 15 0 15 0 15 0 Maximum frequ...

Page 14: ...ture Te Lowest temperature of all indoor units evaporation temperature E1 E3 in the system including the stopped indoor units Definition of condensation temperature Tc Outdoor units high pressure satu...

Page 15: ...pressure 1 The evaporation temperature area changes depending on the maximum load level in each indoor unit as shown on previous page The Area C is regarded as Area B for 6 minutes after compressor s...

Page 16: ...f Technical Data 57 9 50 0 47 9 Thermostat OFF Horsepower decrease Horsepower increase prohibited Horsepower increase possible Area D Area C Area B Area A 50 1 48 0 50 0 15 30 0 48 0 40 5 34 0 33 0 C...

Page 17: ...mperature area is the Area C If it maintains in the Area C the thermostat may turn OFF Once the indoor unit is selected for the test run the thermostat will not be turned OFF However condensation temp...

Page 18: ...2 2 32 2 Maximum current 1 H 25 0 25 0 28 0 Maximum current 1 L 24 0 24 0 27 0 Normally maximum current is limited in demand control shown on page 1 26 Type of outdoor unit 4HP 5HP 6HP Secondary Limit...

Page 19: ...HP 6HP Secondary Limit current 2 15 2 15 2 15 2 Maximum current 2 H 12 2 12 2 12 2 Maximum current 2 L 11 2 11 2 11 2 Stop If this current is detected at regular intervals alarm appears Limit current...

Page 20: ...R valve 5 seconds 2 minutes Inverter compressor starts Compressor Valve turns ON Valve turns OFF This valve turns ON for 30 seconds after the outdoor unit stops After that it turns OFF This valve turn...

Page 21: ...ndoor unit does thermostat OFF factory preset mode Indoor unit gives P14 alarm and transmits the refrigerant leakage signal 4 1 Type of Electronic control valves 4 2 Power Initialization MOV1 is for a...

Page 22: ...can be controlled in a maximum of 15 steps 15 modes However fan modes 15 can only be used if high static pressure mode or high efficiency mode has been set For information concerning EEPROM settings...

Page 23: ...n step becomes 0 and this condition maintains for 3 minutes the fan step is changed to 1 5 2 When all indoor units are operating in heating mode If the pressure sensor temperature is low the fan step...

Page 24: ...interrupted in the following conditions Cooling operation Ambient temperature 38 C Heating operation Ambient temperature 2 C In case of selecting silent priority mode more than 9 setting in high load...

Page 25: ...the settings The maximum permissible static pressure is 35Pa EEPROM setting in each outdoor unit CODE 8F Setting No 0 Invalid factory preset mode 1 High static pressure mode 1 However maximum fan mode...

Page 26: ...ing Heating Heating Some actuators of indoor unit are controlled by CCU 1 1 1 Indoor unit without RAP valve kit 1 SH control adjusts the difference between the liquid temperature and gas temperature i...

Page 27: ...indoor unit Stop Cooling Stop Operation Stop Operation Stop Operation Stop Stop Stop OFF OFF ON ON Operation 20 20 20 20 20 20 20 20 20 20 20 60 480 SH control 1 65 480 pulses SC control 3 20 Operati...

Page 28: ...mode of indoor unit The CCU intervenes in fan control of the indoor unit according to the status of the operating mode The priority order of fan control by the CCU is higher than that of indoor units...

Page 29: ...es from thermostat ON thermostat OFF or operation stopped All mode Cooling mode Dry mode Heating mode Cooling mode Dry mode Both Setting No 4 and 5 functions DP operates for XX minutes when indoor uni...

Page 30: ...ot by the CCU Once the drain pump operates it keeps operating for 20 minutes EEPROM setting in main outdoor unit CODE 2B Setting No 20 30 40 60 XX 20 minutes 30 minutes factory preset mode 40 minutes...

Page 31: ...door units operate at maximum horsepower MOV at all indoor units operate at a fixed pulse according to the indoor unit capacity All indoor units operate in Cooling mode OFF status Fan rotates at the s...

Page 32: ...Present pulse 20 Fan speed Stop LL Set speed L Stop Stop Set speed L Fan speed LL LL Set speed L Stop Stop Set speed L Flap Open Open 3 Indoor Unit Self Oil Recovery Control This control is carried o...

Page 33: ...ON The first operation after all outdoor units stopped for 60 minutes For 60 seconds Indoor units Control time Outdoor units MOV RAP valve kit Fan All outdoor units operate at the maximum capacity MOV...

Page 34: ...ithout interruption while the compressor is operating Condition 2 25 Minimum heat exchanger temperature C 10 Ambient temperature C Frost detection area below the bold lines L1 and L2 L1 L2 15 Defrosti...

Page 35: ...exchanger is not functioning as an evaporator such as stopped outdoor units EEPROM setting in main outdoor unit CODE A3 Setting No 0 1 XX 0 minutes 35 minutes factory preset code 1 minutes 35 60 60 m...

Page 36: ...lue or less without demand input as shown in the table below Limit value Type of outdoor unit 6HP Limited ratio against standard value 145 27 44 Cooling mode 25 70 5HP 145 22 65 24 25 4HP 145 17 29 15...

Page 37: ...d discharge air temperature control Demand control is performed under the current limitation values set at the outdoor unit EEPROM setting DN1A In addition the indoor unit controls the limitation of d...

Page 38: ...e demand values can be set as needed with serial parallel I O It is able to display the present condition on the remote controller The rated current indicates the current value that is listed in the c...

Page 39: ...mand terminal block and Seri Para I O unit refer to the installation instructions supplied with the unit It is also possible to make setting that the display symbol of demand activated is concealed as...

Page 40: ...the system judges whether to switch the mode in XX minutes intervals While the system is stopped change the mode immediately 12 Other Functions EEPROM setting in outdoor unit CODE 27 Setting No 0 XX I...

Page 41: ...tive disorder caused by power supply stop excluding stopped indoor units However the upper limit value set by the code 23 must be less than 25 of the total number of indoor units of the system EEPROM...

Page 42: ...ode 2 Whenever changing thermostat ON and OFF solenoid valve kit sounds ON and OFF 3 When setting at Stop mode be sure to set the room sensor to the remote control thermostat EEPROM setting in indoor...

Page 43: ...ions 27 Auto change over function for mini VRF system 0 Invalid P 30 30 minutes 40 40 minutes 50 50 minutes 60 60 minutes 90 90 minutes 120 120 minutes 180 180 minutes 240 240 minutes For details see...

Page 44: ...t 0 Invalid P 1 LL fan speed A7 The minimum operating time 3 until defrosting 0 0 minute 10 10 minutes 90 90 minutes P 120 120 minutes 1 Invalid C1 O2 output change 0 Continuously set OFF P 1 Refriger...

Page 45: ...Outdoor Unit Control PCB U 4LE2E5 U 5LE2E5 U 6LE2E5 U 4LE2E5 U 5LE2E5 U 6LE2E5 LED2 LED1 SW2 SW1 CN HPS RUN TEST CN EXG STOP CN TO CN SCG CHK CN MOV1 CN SILENT CN ROM SA1 CN OC CN EMG CN RC CN MOV4 C...

Page 46: ...t Control PCB TD8311 U 4LE2E8 U 5LE2E8 U 6LE2E8 LED2 LED1 SW2 SW1 CN HPS RUN TEST CN EXG STOP CN TO CN SCG CHK CN MOV1 CN SILENT CN ROM SA1 CN OC CN EMG CN RC CN MOV4 CN TERMINAL CN LPS AP MODE A ADD...

Page 47: ...7 Mini VRF SYSTEM Control Functions Outdoor unit 1 12 Outdoor Unit Control PCB 1 2 Outdoor Unit HIC PCB TD831186 00_ Mini VRF TD indb 2 16 06 22 8 32 48 2 Outdoor Unit HIC PCB U 4LE2E5 U 5LE2E5 U 6LE2...

Page 48: ...Mini VRF SYSTEM Control Functions Outdoor unit 1 38 1 12 Outdoor Unit Control PCB U 4LE2E8 U 5LE2E8 U 6LE2E8 U 4LE2E8 U 5LE2E8 U 6LE2E8...

Page 49: ...cted only to an outdoor unit and indoor units in a single system and the inter unit control wiring does not cross multiple systems If wiring links the inter unit control wiring for multiple systems to...

Page 50: ...rt circuit to return the unit to normal status MODE pin 3P Black Changes to cooling heating mode When in normal operation When short circuited the COOL side indoor unit operation in the same refrigera...

Page 51: ...2 ON 2 1 ON ON OFF Set to 1 System 30 Both ON 2 1 ON ON OFF Set to 0 2 1 2 1 1 2 2 1 2 1 2 1 1 2 2 1 2 1 2 1 1 2 2 1 Number of indoor units Indoor unit setting SW3 1P DIP switch 10 Indoor unit setting...

Page 52: ...Mini VRF SYSTEM Control Functions Outdoor unit 1 42 1 13 Electrical Data 1 Electric Wiring Diagram U 4LE2E5 U 5LE2E5 U 6LE2E5...

Page 53: ...1 43 Mini VRF SYSTEM Control Functions Outdoor unit 1 13 Electrical Data 2 Electric Wiring Diagram U 4LE2E8 U 5LE2E8 U 6LE2E8...

Page 54: ...MEMO 1 44...

Page 55: ...Fan Speed Control 2 5 4 Indoor Unit MOV Control 2 6 5 Drain Pump Control 2 6 6 Automatic Heating Cooling Control 2 7 7 Discharge Air Temperature Control 2 8 8 RAP Valve Kit Control 2 8 9 Automatic Fl...

Page 56: ...body sensor is enabled lower temperature near the floor must be considered To correct this difference in temperature the correction temperature is used The factory setting for the correction temperatu...

Page 57: ...24 5 25 0 Detected temp by remote controller sensor 17 0 20 5 21 0 Room temp temp detected by remote controller sensor 17 0 17 0 20 5 20 5 21 0 21 0 T 3 0deg 0 5deg 1 0deg Thermostat ON Thermostat OFF...

Page 58: ...Mini VRF SYSTEM Control Functions Indoor Unit 2 4 2 2 Heating Standby 2 Heating Standby Refer to the indoor unit service manual...

Page 59: ...n below during the automatic fan mode The fan mode does not change for 3 minutes during cooling operation and 1 minute during heating operation once it is changed The values in the parenthesis are whe...

Page 60: ...mostat ON The float switch worked The drain pump may often operate for a while when the cooling thermostat turns OFF or the indoor unit is stopped The drain pump can be turned on when the cooling ther...

Page 61: ...r A C within 10 minutes after the compressor turns OFF Monitoring mode is excepted 5 When the heating cooling change occurs the 4 way valve switches approximately 30 to 50 seconds after the compressor...

Page 62: ...arge air temperature setting 3 5 C is continuously detected for 7 minutes in cooling mode Temperature more than Discharge air temperature setting 3 5 C is continuously detected for 7 minutes in heatin...

Page 63: ...F5 Models other than the above The flap closes once and moves to the set position when the operating mode is changed If the flap position cannot be adjusted because of a problem only the swing operat...

Page 64: ...A A B Fan mode Set temp in remote controller 1 1 T deg 11 Fan Control during Dry Mode The fan control during dry mode is as follows A Fan mode set in the remote controller B Fan mode is L during ther...

Page 65: ...the output of the ventilation turns OFF The ventilation fan can also be turned ON and OFF using the ventilation button on the remote controller Refer to the operating instractions supplied with the r...

Page 66: ...time of factory shipment Setting at time of factory shipment U2 4 Way Cassette 4 deg 2 deg Y2 4 Way Cassette 60 60 4 deg 2 deg L1 2 Way Cassette 4 deg 2 deg D1 1 Way Cassette 4 deg 2 deg F2 Low Silho...

Page 67: ...AIR PROCEDURES 1 Removing Panels 3 2 2 Discharging Compressor Oil 3 3 3 Recovering Refrigerant 3 4 4 Checking for Leakage After Repair 3 9 5 Evacuating System 3 10 6 Charging Compressor Oil 3 11 7 Pum...

Page 68: ...ure to turn off the power before maintenance When the power is turned off wait for 5 minutes without any work Then start working CAUTION Remove the front panel remove 2 screws 1 Front panel removal 2...

Page 69: ...f oil Judgment criteria for changing oil Color Odor Total acid value Hue Normal Light chestnut None 0 02 or less 3 5 or less Abnormal overheat operation Brownish Smells somewhat not as strong as below...

Page 70: ...and recovery cylinder using hoses To avoid the entry of air into the refrigerant tubing carry out this connection work carefully Fig 2 For detailed procedures such as connecting the refrigerant recov...

Page 71: ...rol settings 3 2 2 Refrigerant recovery procedures 1 When replacing or repairing a faulty unit let other normal indoor units run excluding indoor unit where refrigerant is recovered Modify power to pe...

Page 72: ...d in 3 2 1 Cooling operation for all units fully close the liquid tube ball valve 3 Run the unit in Cooling mode for 10 to 20 minutes more 4 Fully close the gas tube ball valve and stop the operation...

Page 73: ...8 MPa or higher or the low pressure gauge reaches 0 5 MPa or below at the outdoor unit where pump down is being performed press the ON OFF button on the outdoor unit maintenance remote controller to s...

Page 74: ...rigerant recovery unit and refrigerant recovery cylinder Quickly connect each part to prevent air from entering the tubing 5 Check that each service valve of the gas tube and liquid tube for the outdo...

Page 75: ...ly inspect for any leakage If there are any leaks bubbles will show on the tubing surface To continue the air tight check after the brief leak inspection turn on power while short circuiting the AP pi...

Page 76: ...to the outdoor unit all electronic valves in the outdoor unit are forcibly opened and any remaining nitrogen gas can be recovered Failure to perform this procedure may result in nitrogen gas remainin...

Page 77: ...ters the charging tank CAUTION 1 Evacuation drying in oil charging tank With the lower side valve fully closed open the upper side valve and connect it to the vacuum pump via the manifold gauge valves...

Page 78: ...as tube service port low pressure side CAUTION 3 Charging compressor oil into outdoor unit Connect the lower valve to the low pressure outlet with Schrader type push to release valve in the outdoor un...

Page 79: ...Process Oil charging Oil charge completed Refrigerant recovery oil charging tank inside Open Close Close Close No connection Close No connection Open Connect to refrigerant recovery tank Open Open Ope...

Page 80: ...odel name U LE2E8 U LE2E5 22 1 1 Vacuum pump Manifold gauge Lo Hi Oil 6 2 If Outdoor Unit Has Not Been Charged with Refrigerant When a compressor has been replaced or in any other case where the outdo...

Page 81: ...efrigerant and cylinder itself beforehand and provide sufficient safety measures such as installing a high pressure cutout in the circuit 2 Connect the outdoor unit maintenance remote controller to th...

Page 82: ...nit 1 Connect the manifold gauge valves at the Lo side to the low pressure outlet port of the outdoor unit Also connect the refrigerant recovery cylinder at the liquid tube service port Schrader type...

Page 83: ...outlet port on the outdoor unit and connect the manifold gauge to the refrigerant recovery device Be sure that no air enters the tubing at this time 6 Short circuit the AP pin on the outdoor unit con...

Page 84: ...0 M b Compressor Min 100 M servicing part c Unit Min 10 M This is due to the presence of refrigerant which decreases the insulation resistance Minimum insulation resistance as required by generally ac...

Page 85: ...an amount of new refrigerant equal to the amount of recovered refrigerant or when charging with the same amount of new refrigerant has not been completed but no more refrigerant will enter the unit fu...

Page 86: ...res will be attached then recover the refrigerant from the tubing Be sure that no air enters the tubing at this time 5 As shown in Fig 11 disconnect the tube that runs from the liquid tube valve to th...

Page 87: ...1 See the section 3 2 3 Refrigerant recovery procedures 2 Indoor unit with no ball valve equipped Perform pump down of the refrigerant from all indoor units and inter unit tubing to the outdoor unit s...

Page 88: ...emove the compressor terminal cap and then take out the supply terminal Remove the crankcase heater Remove the hexagonal nuts with washer from three locations Cut out the tube on the compressor side b...

Page 89: ...e Remote Controller 4 4 OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER 1 Overview 4 2 2 Functions 4 3 3 Ordinary Display Controls and Functions 4 4 4 Monitoring Operations 4 9 5 Outdoor Unit Alarm History...

Page 90: ...t connection status number of units operating mode etc NOTE Outdoor unit maintenance remote controller does not function as an ordinary remote controller It is therefore only used for test runs and du...

Page 91: ...ed Alarm details display No of indoor outdoor units Unit Nos of connected indoor outdoor units Indoor outdoor unit operating status blinks when an alarm occurs Indoor unit thermostat ON Display of ind...

Page 92: ...t PCB Terminal board l If the communications line in the inter unit control wiring is connected it can be left as is l In case of an independent outdoor unit 1 maintenance remote controller connected...

Page 93: ...an be used to change between heating and cooling operation The display indicates the operating mode of the indoor unit with the lowest unit No l All units test run Operation The Check button can be us...

Page 94: ...ected outdoor units 1 4 Unit Nos of connected outdoor units 7 segment display Operating status of outdoor unit compressor 7 segment display Compressor operating time 0 99999999 hours Outdoor unit powe...

Page 95: ...bus address which is currently selected XX Outdoor system address on main bus line 1 30 YY Outdoor unit sub bus address 1 8 1 appears when there is only 1 outdoor unit Locations where and are display...

Page 96: ...fore 10 seconds have passed press the Flap button n The total compressor operating time is displayed in 1 hour units using 8 digits When the first 4 digits are displayed the top dot of the colon is il...

Page 97: ...is illuminates The display and operations are the same as for monitor mode using the indoor unit remote controller Press the button and select the indoor unit to monitor Press the temperature setting...

Page 98: ...at exchanger liquid EXL Outdoor air temp TO Inverter secondary current A A Inverter primary current L2 phase Three phase only A A Outdoor unit STEP MOV pulse 1 MOV1 Inverter actual operating frequency...

Page 99: ...ess the button and select the outdoor unit for which to monitor the alarm history Press the temperature setting and buttons and select the item code for the alarm history The select outdoor unit addre...

Page 100: ...ps blinking and remains lit During this mode is displayed blinking The outdoor unit address display section displays ALL the item code and number DN value in the table and the setting data 6 digits Th...

Page 101: ...Mini VRF SYSTEM Remote Controller Functions 5 1 5 5 REMOTE CONTROLLER FUNCTIONS 1 Simple Settings Function 5 2 2 Detailed Settings Function 5 8 3 Remote Controller Servicing Functions 5 18 Contents...

Page 102: ...play Select the Unit no by pressing the or button for changes Maintenance func 1 Outdoor unit error data 2 Service contact 3 RC setting mode 4 Test run Sel Page Confirm 20 30 THU Maintenance func 5 Se...

Page 103: ...s in effect press the select the address unit No of the indoor unit to set button and At this time the fan at the indoor unit begins operating If unit No is displayed the same setting will be made for...

Page 104: ...ke temperature 1 C down 0002 Shifts intake temperature 2 C down 0003 Shifts intake temperature 3 C down 0004 Shifts intake temperature 4 C down 0005 Shifts intake temperature 5 C down 0006 Shifts inta...

Page 105: ...fouling is more severe than normal Filter sign ON times for each model Model data Model Filter sign ON time Standard Long life Standard High fouling Standard High fouling 0001 4 Way cassette U2 4 Way...

Page 106: ...mode from a specific remote controller When there are multiple remote controllers in the same refrigerant system it is possible to set one remote controller as the priority remote controller the remot...

Page 107: ...the heating thermostat is OFF 06 Heating intake temperature shift Shifts the intake temperature during heating Can be set when the body thermostat is used 07 Electric heater installation Set when cost...

Page 108: ...ay Select the Unit no by pressing the or button for changes Maintenance func 1 Outdoor unit error data 2 Service contact 3 RC setting mode 4 Test run Sel Page Confirm 20 30 THU Maintenance func 5 Sens...

Page 109: ...e select the address unit No of the indoor unit to set At this time the fan at the indoor unit begins operating button and If unit No is displayed the same setting will be made for all indoor units 4...

Page 110: ...hifts intake temperature 1 C up 0009 Shifts intake temperature 9 C up Cooling intake temperature shift 0010 Shifts intake temperature 10 C up 0000 Function disabled 0001 Stops automatically 5 minutes...

Page 111: ...g range Cooling 0018 18 C Lower limit at shipment 0019 19 C Lower limit 0029 29 C 0030 30 C Upper limit at shipment Upper limit Heating 0016 16 C Lower limit at shipment 0017 17 C Lower limit 0029 29...

Page 112: ...emperature 25 C 0026 Control temperature 26 C Fan output switching 0000 Output linked with fan ON when indoor unit fan is operating 0001 Fan mode operation output Drain pump delayed stop time 0000 No...

Page 113: ...enabled Smudging control 0000 No smudging control Waiting time for dew condensation prevention control 0000 Without dew condensation prevention control 0001 Dew condensation prevention control after...

Page 114: ...th nanoe X function Not operational if R C with nanoe X not connected 0002 With nanoe X function Operational even if R C with nanoe X not connected Internal cleaning dry times when humidity is over 70...

Page 115: ...rmostat is used Increase this value when it is difficult to turn the thermostat ON 18 Automatic stop time after operation start The time at which an indoor unit is automatically stopped after operatio...

Page 116: ...n the T10 terminal is used for OFF reminder or for fire prevention input 31 Ventilation fan operation from remote controller It is possible to install a total heat exchanger and ventilation fan in the...

Page 117: ...ode Changes flap operation to draft reduction mode 46 DC flap swing mode Selects the swing operation mode for the flap 5d DC fan tap setting Sets the DC fan tap according to the purpose of use Change...

Page 118: ...mostat ON 4 Test run Sensor temperature display Temperature display from each sensor 5 Sensor info Press the button Restart 2WAY SYSTEM Remote Controller Functions 3 Remote Controller Servicing Functi...

Page 119: ...or unit where that remote controller is connected stops Detailed settings System address indoor unit address central control address and other settings Auto address Auto address setting based on comma...

Page 120: ...simultaneously for 4 or more seconds The Maintenance func screen appears on the LCD display 3 2 Press the or button to see each menu Select Sensor unit info on the LCD display and press the Select 0 E...

Page 121: ...lly updated every 30 seconds 24 Data shows the floor temperature measured by the sensor Data is automatically updated every 30 seconds How to Check Human Detection Sensor Step 1 Check that Code no 11...

Page 122: ...elect Status info on the LCD display and press the button Check of ECONAVI Operational Status The status of ECONAVI operation can be checked instantly It is available to check the operation when insta...

Page 123: ...ress the or button Select 4 Test run on the LCD display and press the button Change the display from OFF to ON by pressing the or button Then press the button Maintenance func 1 Outdoor unit error dat...

Page 124: ...normal remote controller display The temperature cannot be adjusted in Test Run mode This mode places a heavy load on the machines Therefore use it only when performing the test run The test run can b...

Page 125: ...information by pressing the or button Maintenance func 1 Outdoor unit error data 2 Service contact 3 RC setting mode 4 Test run Sel Page Confirm 20 30 THU Maintenance func 5 Sensor info 6 Servicing ch...

Page 126: ...ote controller temp 02 Indoor unit intake temp TA 03 Indoor unit heat exchanger temp E1 E1 04 05 Indoor unit heat exchanger temp E3 E3 06 Discharge air temp BL 07 Discharge air temp setting 08 Indoor...

Page 127: ...r In the case of Unsupported select 8 Detailed settings and check the setting data of the Code no 9 If the setting data is 0000 the nanoe X module is not recognized Check the status of the connection...

Page 128: ...Disconnection failure The wiring between the indoor unit and nanoe X module is not connected Specialize the target indoor unit and check the connection to the indoor unit PCB of the nanoe X module No...

Page 129: ...ote Controller Switch Alarm Display 6 2 2 Outdoor Unit Control Panel LED Display 6 4 3 Mini VRF Alarm Codes 6 5 4 Inspection and Characteristics of Parts 6 22 5 Test Pin 6 25 6 Symptom Thermostat in O...

Page 130: ...found in Auto Addressing than the setting on outdoor PCB More indoor units are found in Auto Addressing than the setting on outdoor PCB No indoor unit responded in Auto Addressing Indoor unit model d...

Page 131: ...oor unit fan motor has failure Compressor start failure Compressor is missing phase or reverse phase Other indoor unit in group control has an alarm Indoor unit communication error of group control wi...

Page 132: ...or units In this case be sure to set the indoor unit address less than 13 OFF ON Auto address setting was completed successfully After the power is turned ON and auto address setting is not in progres...

Page 133: ...F17 Low pressure sensor has failure LPS 6 11 F31 EEPROM on outdoor unit PCB has failure 6 11 H01 Compressor primary current is overcurrent 6 11 H02 PFC is overcurrent or VDC is overvoltage Single pha...

Page 134: ...etting again Example Notes E12 Auto Address failed to start Auto address setting was started when auto address setting was in progress at another outdoor unit in the same link Auto address setting is...

Page 135: ...umber of indoor units that is set After correcting the indoor unit quantity setting or the inter unit control wiring perform auto E20 Alarm Alarm code Alarm meaning Alarm conditions Probable cause 2 S...

Page 136: ...l PCB failure has occurred Step 1 Connect a discharge sensor where the F04 alarm has not occurred to the connector for this compressor on the Outdoor Unit Control PCB Measure the temperature at the sa...

Page 137: ...er monitor or PC monitor to check the temperature that is recognized by the microcomputer Correction Example Notes F08 Alarm Alarm code F08 Alarm meaning Outdoor temperature sensor has failure TO Alar...

Page 138: ...ble is not corrected High pressure sensor malfunction The check items are the same as for a high pressure sensor malfunction A normal PCB is needed to determine whether the problem is a PCB failure or...

Page 139: ...U 5LE2E5 U 6LE2E5 Alarm code H01 Alarm meaning Compressor primary current is overcurrent Alarm conditions Compressor INV primary current detected overcurrent higher than 32 2 A Probable cause 1 Wiring...

Page 140: ...is over 43 8Hz and the secondary current is over 4 7A the primary current detected lower than 0 7A No current is detected even though the compressors are operating Probable cause 2 HIC PCB failure 3...

Page 141: ...rs low pressure may occasionally decrease abnormally Solenoid valve expansion valve fleezing caused by contaminated water inside the circuit etc Then check the following points Open valve of outdoor u...

Page 142: ...ng decision of HIC PCB IPM Carry out the judgement of HIC PCB IPM in the following method If the result of measurement shows the resistance value of the fault diagnosis replace the HIC PCB Right or wr...

Page 143: ...ng decision of HIC PCB IPM Carry out the judgement of HIC PCB IPM in the following method If the result of measurement shows the resistance value of the fault diagnosis replace the HIC PCB Right or wr...

Page 144: ...If the connector is normal check the 4 way valve wiring and the Outdoor Unit Control PCB circuit Correction Example Notes L18 4 way valve has failure During heating operation the detected temperature...

Page 145: ...5 Outdoor Unit Control PCB failure 6 Failure to open the service valve of the outdoor unit Check Check 1 Insufficient refrigerant Trouble Liquid effectiveness is poor Check whether or not the superhe...

Page 146: ...door unit is excessively high 9 During heating check for indoor fan failure 10 Check whether the refrigerant circuit is clogged Check that all service valves are closed Check whether welded locations...

Page 147: ...s judged an error whenever the outdoor unit receives the signal O2 Alarm Generated from the indoor unit It is judged an error whenever the outdoor unit s EEPROM setting item code C1 is made at other t...

Page 148: ...power supply voltage 2 Correct the wiring 3 Replace the compressor or the HIC PCB When replacing HIC PCB be sure to attach next radiating putty between the PCB and heatsink Model name Secondary curre...

Page 149: ...mple P22 Alarm Alarm code Alarm meaning Alarm conditions Probable cause P22 Outdoor unit fan motor has failure Fan motor start failure fan motor Hall IC input failure 1 Wiring failure 2 Outdoor Unit C...

Page 150: ...Measure the voltage between plug pin 5 and pins 1 through 4 at the CN MOV1 connector 5P white on the outdoor unit control PCB Because of the pulse output a simplified measurement method is used Set t...

Page 151: ...acteristics Curve 4 Indoor suction air room temp sensor TA Indoor discharge air temp sensor BL 5 Indoor coil temp sensor E1 E3 40 35 30 25 20 15 10 5 0 20 15 10 5 0 5 10 15 20 8 7 6 5 4 3 2 1 0 20 30...

Page 152: ...or air temp sensor TO Compressor intake temp sensor SCT Temperature C Temperature C Outdoor coil liquid temp sensor EXL Outdoor coil gas temp sensor EXG Temp sensor at refrigerant gas outlet of dual t...

Page 153: ...en turn the power back ON Output is performed in the sequence shown in the table below for 0 5 seconds each Operation Operation Output U 4LE2E5 U 5LE2E5 U 6LE2E5 Relay RY508 Oil recovery valve ORVR Re...

Page 154: ...to RC socket on outdoor unit main control PC board and check alarm messages See operational status 2 2 Yes No 2 2 Discharge temperature is over 80 C in stop mode and does not decrease Connect outdoor...

Page 155: ...paring for Test Run 7 2 2 Test Run Procedure 7 3 3 Main Outdoor Unit P C Board Setting 7 4 4 Auto Address Setting 7 9 5 Setting Test Run Remote Controller 7 15 6 Caution for Pump Down 7 16 7 Self Diag...

Page 156: ...e compressor The bottom of the compressor should be warm to the touch and the crankcase heater around the feet of the compressor should be hot to the touch ON Power must be turned ON at least 5 hours...

Page 157: ...ultiple refrigerant system LEDs 1 and 2 blink alternately Approx 2 3 minutes Set the number of indoor units CASE 1 CASE 2 Are LEDs 1 and 2 on outdoor unit P C board OFF Connect link wires to original...

Page 158: ...oor Unit P C Board Setting 3 Main Outdoor Unit P C Board Setting U 4LE2E5 U 5LE2E5 U 6LE2E5 U LED 2 LED 1 SW 2 SW 1 SW 4 SW 3 DEF A ADD CHK AP STOP RUN MODE CN SILENT CN ROM CN OC CN EMG For detailed...

Page 159: ...un 7 5 7 3 Main Outdoor Unit P C Board Setting U 4LE2E8 U 5LE2E8 U 6LE2E8 For detailed drawing see the page 7 7 LED 2 LED 1 SW 2 SW 1 SW 4 SW 3 A ADD DEF CHK STOP RUN MODE CN TERMINAL CN SILENT CN ROM...

Page 160: ...N 25 5 OFF ON 26 6 OFF ON 27 7 OFF ON 28 8 OFF ON 29 9 OFF ON 30 0 ON ON Number of indoor units System address No System address SW1 2P DIP switch 10 20 System address SW2 Rotary switch Indoor unit se...

Page 161: ...LED 1 LED 2 CN RC AP MODE CN TERMINAL SW 1 SW 4 SW 3 A ADD DEF CHK STOP RUN CN SILENT CN ROM CN OC CN EMG LED 2 LED 1 SW 2 SW 1 SW 4 SW 3 DEF A ADD CHK AP STOP RUN MODE CN SILENT CN ROM CN OC CN EMG...

Page 162: ...ins If the remote controller is connected in test run mode it is automatically cancelled after 1 hour Also if short circuit is cancelled test run mode is cancelled RC plug 3P BLU Connects to outdoor u...

Page 163: ...e to perform auto address setting again Auto address setting is completed when LEDs 1 and 2 on outdoor main unit control P C board go out 5 Remote control operation is now available When auto address...

Page 164: ...tem address System 1 setting Number of indoor units 9 units setting Unit 1 Main Set the terminating resistance pin to SHORT side CN TERMINAL Remote control communication wiring Outdoor unit system 1 I...

Page 165: ...efrigerant system address Rotary switch SW2 on outdoor main unit control P C board in 1 refrigerant system is set to 1 and the Dip switch SW1 is set to 0 at shipment 2 1 ON ON OFF 2 Regarding the numb...

Page 166: ...ontroller This message disappears when auto address setting is completed 5 Repeat the same steps to perform auto address setting for each successive system Auto Address Setting from the High spec Wire...

Page 167: ...his status remains even if the indoor unit address indoor EEPROM item code 13 is set more than 13 indoor units In this case be sure to set the indoor unit address less than 12 Under auto address setti...

Page 168: ...ch indoor unit is currently selected Indoor unit address CZ RTC4 Timer remote controller CZ RTC5A CZ RTC5B High spec wired remote controller 1 Keep pressing the and buttons simultaneously for 4 or mor...

Page 169: ...play TEST 20 30 THU COOL MODE START 20 30 THU CZ RTC4 Timer remote controller 1 Press the remote controller button for 4 seconds or longer Then press the button appears on the LCD display while the te...

Page 170: ...lug 3P BLU on outdoor main unit control P C board and make confirmation n Self Diagnosis Function Table Cause and countermeasure against the symptom of auto address failure Symptom Cause and counterme...

Page 171: ...unit control wiring of the remote controller when in the indoor unit group control address setting may not occasionally be made although under setting is displayed 3 Although the alarm E15 and E16 ar...

Page 172: ...y H03 Compressor current sensor is disconnected or shorted H05 Compressor discharge temperature sensor is disconnected shorted or misplaced DISCH H06 Low pressure sensor value is too low H31 Compresso...

Page 173: ...re sensor has failure TA F11 Indoor discharge air temperature sensor has failure BL P09 Connection to the panel of indoor unit is not good P01 Activation of protective device for Indoor unit Thermal p...

Page 174: ...gerant systems excepting 2 locations described above make them invalid OPEN side It is prohibited making more than 3 locations of terminating resistance valid Since the use of linking the sub outdoor...

Page 175: ...201803...

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