Panasonic S-22ML1E5 Service Manual & Test Run Service Manual Download Page 89 | Manualshive

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Mini VRF SYSTEM

Outdoor Unit Maintenance Remote Controller

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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 Monitor  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
6.  Mode Settings   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Contents

SM830258-01_欧州向け_1fan_mini_VRF.indb 1

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Summary of Contents for S-22ML1E5

Page 1: ...MANUAL 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 6LE2E8 U 4LE2E5 U 5LE2E5 U 6LE2E5 ...

Page 2: ...ette 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 22MP1E5 S 28MP1E5 S 36MP1E5 S 45MP1E5 S 56MP1E5 R1 Concealed Floor Standing S 22MR1E5 S 28MR1E5 S 36MR1E5 S 45MR1E5 S 56MR1E5 Type Indoor Unit Type Rated Capacity 71 73 90 106 140 160 D1 1 Way Casset...

Page 3: ...tion 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 The manufacturer shall in no way be responsible for improper installation or maintenance service including failure to follow the instructions in this document SPECIAL PRECAUTIONS WARNING WARNING When W...

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 damage to the PCBs or other causes 1 The electrical waveform of the generator must be a distortion free sine wave that is within the frequency and voltage tolerances defined by the equipment specifi...

Page 5: ...om 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 disassembled under any circumstances Modified or disassembled unit may cause fire electric shock or injury Do not clean inside the indoor and outdoor units by users Engage authorized dealer or speciali...

Page 6: ...of 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 installation of multi air conditioner systems is on the increase because of the need for effective use of floor space individual control energy conservation by curtailing heat and carrying power etc Most im...

Page 7: ...e 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 collect the remaining refrigerant and recharge the required total amount of new refrigerant after fixing the leak 3 Different tools required 3 1 Tool specifications have been changed due to the chara...

Page 8: ...00 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 refrigerant charge of the product see unit name plate 2 Additional refrigerant amount charged in the field 3 Total refrigerant charge 4 Contains fluorinated greenhouse gases 5 Outdoor unit 6 Refrigerant cy...

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 Temperature Control 2 8 8 RAP Valve Kit Control 2 8 9 Automatic Flap Control 2 9 10 Filter Sign 2 9 11 Fan Control during Dry Mode 2 10 12 Ventilation Fan Output 2 11 13 T10 Terminal 2 11 14 Parameter 2 ...

Page 10: ...ection 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 6 22 5 Test Pin 6 25 6 Symptom Thermostat in OFF continues or cycles OFF ON too frequently 6 26 Section 7 TEST RUN 7 1 1 Preparing for Test Run 7 2 2 Test Run Procedure 7 3 3 Main Outdoor Unit P C B...

Page 11: ...f 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 10 Other Functions 1 30 11 Detailed Settings in EEPROM of Outdoor Unit 1 33 12 Outdoor Unit Control PCB 1 35 13 Electrical Data 1 42 Contents ...

Page 12: ...le 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 The numbers in parenthesis are available with the capacity of 1 5 kW indoor unit connection Be sure to connect indoor units so that the resulting indoor outdoor capacity ratio total capacity of all ...

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 frequency Hz 2 63 0 79 0 95 0 The frequency range in the table above is subject to change without notice 1 The minimum Hz changes according to the outdoor air temperature during cooling operation 2 The up...

Page 14: ...ature 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 saturated temperature Load level varies from a minimum of 0 to a maximum of 30 on 1 to 1 basis up to 31 levels When the indoor unit stops including thermostat OFF the level shows 0 In the case of test ru...

Page 15: ...gh 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 starts If outdoor temperature 15 C α is enable Minimum α is enable in all indoor units If outdoor temperature 10 C α is disable Outdoor temperature α is enable α 2 5 3 Indoor unit type α Correction V...

Page 16: ...of 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 Max required level 42 0 PX 52 5 49 1 47 0 46 9 Thermostat OFF Horsepower decrease Horsepower increase prohibited Horsepower increase possible Area D Area C Area B Area A 52 5 0 1 49 0 C C Thermostat ...

Page 17: ...emperature 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 temperature control is performed in order to prevent the high load according to the figure shown on previous page After the last indoor unit is operated in the test run mode the test run is automatically...

Page 18: ...32 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 current 2 24 5 24 5 24 5 Maximum current 2 H 21 0 21 0 21 0 Maximum current 2 L 20 0 20 0 20 0 Stop If this current is detected at regular intervals alarm appears Limit current 1 2 Frequency of inve...

Page 19: ...5HP 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 1 2 Frequency of inverter compressor goes down Max current 1H 2H Frequency of inverter compressor cannot increase Max current 1L 2L Frequency of inverter compressor can increase Inverter layout Power...

Page 20: ...VR 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 turns ON when the high pressure is too high This valve turns OFF when the high pressure goes down This valve turns ON when the high pressure switch is activated This valve stays ON for 10 seconds after t...

Page 21: ...Indoor 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 adjusting refrigerant flow amount of outdoor heat exchanger MOV4 is for adjusting refrigerant flow amount of Sub cooler If no indoor units have started even once after the power supply to the outdoor ...

Page 22: ...t 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 refer to the field application functions Maximum value Minimum value Standard High static pressure mode setting High efficiency mode setting Condenser Condenser Condenser Evaporator Evaporator Evapor...

Page 23: ...an 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 is increased at regular intervals If the pressure sensor temperature is high the fan step is decreased in order to prevent excessive loads The fan step may be increased when the liquid temperature of...

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 situation the system has possibility to stop to prevent high pressure cut Silent is given priority 9 10 11 12 13 14 15 16 Silent is given priority Silent is given priority Silent is given priority Si...

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 is upper limit 8 High Efficiency Mode The outdoor unit allows a high efficiency mode changing the settings CODE 5F Setting No 0 Invalid factory preset mode 1 Valid ...

Page 26: ...ling 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 in indoor unit unit pulse MOV of Indoor Unit SH gas temperature E3 liquid temperature E1 Target SH is 3 degrees Celsius when the load level of indoor unit is 30 or 31 test run 3 SC control adjusts the...

Page 27: ...f 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 Operation Operation Fan only Cooling Heating Heating Cooling Cooling Heating Heating 1 2 Indoor unit with RAP valve kit Go to previous page and see the comments with asterisks 1 and 3 In the case of special...

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 Operating mode of outdoor unit Operating mode of Compressor Thermostat ON OFF RAP valve kit ON OFF Stop Cooling Stop Operation Stop Operation Stop Operation Stop Stop Stop OFF OFF ON ON Operation OFF...

Page 29: ...ges 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 unit s operation changes from thermostat ON or thermostat OFF operation stopped 4 Drain Pump Control The CCU intervenes in drain pump control of the indoor unit according to the setting in EEPROM in the...

Page 30: ...not 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 50 50 minutes 60 minutes Regarding the preset discharge air temperature that is set in the indoor unit is able to change see the section 5 REMOTE CONTROLLER FUNCTIONS in this Service Manual EEPROM se...

Page 31: ...tdoor 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 set fan speed depending on the indoor unit operation mode or at fan speed LL In the case of cooling mode For 3 minutes Indoor units Control time Outdoor units MOV RAP valve kit Fan All outdoor units o...

Page 32: ...0 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 out regularly when the system is in cooling mode During stopped fan mode setting or thermostat OFF condition at the indoor unit MOV of the indoor unit is opened regularly for 1 minute at the interval ...

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 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 set fan speed depending on the indoor unit o...

Page 34: ...without 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 Defrosting operation end temperature unit C 1 3 8 10 25 5 27 5 Minimum heat exchanger temperature drops below L1 line shown in the figure below and detects for a total of 60 minutes while the compressor is o...

Page 35: ...t 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 minutes Condition 1 The temperatures are 15 C or higher at all heat exchanger sensors installed on the outdoor unit One minute has elapsed under the condition that the temperatures are 10 C or higher ...

Page 36: ...alue 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 69 Heating mode The standard value of the limit current is shown in the table below U 4LE2E8 U 5LE2E8 U 6LE2E8 Type of outdoor unit 6HP unit Amp HP Horsepower HP Horsepower HP Horsepower unit Amp 6 ...

Page 37: ...nd 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 discharge air temperature Demand control is performed under the current limitation values set at the outdoor unit EEPROM setting DN1A Discharge air temperature limitation control is performed set at t...

Page 38: ...he 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 catalog or similar material XX and YY are able to set in EEPROM of main outdoor unit Input present Input not present 3 Serial parallel I O CODE 1B Setting No 0 40 45 1 130 YY 0 40 45 No control 130 Se...

Page 39: ...emand 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 shown in the following table Input present Input not present Seri Para I O unit Demand terminal block COM short circuit Non LV1 LV2 LV3 Contact 1 Contact 2 No control Operates to XX of the upper lim...

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 Invalid factory preset mode 30 40 30 40 50 50 60 60 90 90 120 120 180 180 240 240 XX is able to be set in EEPROM on the outdoor unit s PCB It is impossible to perform the simultaneous cooling heating ...

Page 41: ...ative 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 setting in outdoor unit CODE 23 Allowed number of missing indoor unit Setting No 1 This function is invalid factory preset mode 0 0 1 1 2 2 3 3 Never use 4 64 Examples In case of 8 indoor units setti...

Page 42: ...mode 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 unit CODE 32 Setting No 0 Indoor unit sensor factory preset mode 1 Remote control sensor 4 Operation when in the intermittent airflow setting When in the thermostat OFF LL airflow and stop mode repea...

Page 43: ...tions 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 10 Other Functions 1 2B DP operation time for slime measures 20 20 minutes 30 30 minutes P 40 40 minutes 50 50 minutes 60 60 minutes For details see 5 Outdoor Unit CCU Control 4 2C Indoor unit fan st...

Page 44: ...ct 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 Refrigerant leak prevention normal OFF 2 Refrigerant leak prevention normal ON 3 Pumpdown control For details see 3 Special Control 3 CA The defrost detection temperture setting 3 3 C P 6 6 C 9 9 C 30 30 C E...

Page 45: ...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 NO of I U ...

Page 46: ...it 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 DEF SW4 SW3 CN SCT CN EXL CN DISCH JP001 U 4LE2E8 U 5LE2E8 U 6LE2E8 ...

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

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: ...ected 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 the same communications lines then a different address must be set for each refrigerant tubing system If wiring links multiple systems a maximum of 30 systems up to 64 indoor units can be connected ...

Page 50: ...ort 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 refrigerant system changes to all cooling mode When short circuited the HEAT side indoor unit operation in the same refrigerant system changes to all heating mode When in auto address setting Changes to heati...

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 SW4 Rotary switch 10 12 unit factory setting 1 unit 1 9 unit OFF 1 ON ON OFF ON 1 ON ON OFF 2 Table 1 5 Setting the System Address SW2 Rotary switch Yellow SW1 2P DIP Black Outdoor system address SW...

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: ...c 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 Flap Control 2 9 10 Filter Sign 2 9 11 Fan Control during Dry Mode 2 10 12 Ventilation Fan Output 2 11 13 T10 Terminal 2 11 14 Parameter 2 12 Contents ...

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 temperature is different depending on the model See 14 Parameter Example Cooling temperature correction 4 Way cassette correction temperature 0 degrees Body sensor is enabled Set temp in remote controller 28 ...

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 Thermostat OFF The thermostat does not turn OFF for 3 minutes after it turns ON The thermostat does not turn ON 1 to 3 minutes after it turns OFF The thermostat does not turn OFF for 60 minutes duri...

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: ...wn 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 when the remote controller sensor is enabled 3 2 1 deg Indoor fan mode HH H L HH H Cooling Set temp Set temp 1 2 2 4 deg Indoor fan mode HH H L HH H Heating ...

Page 60: ...rmostat 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 thermostat is OFF if the setting is made to prevent water collected in the drain pan for a long time For details see the item 5 2 Detailed Settings Function under the Section 5 The indoor unit heat excha...

Page 61: ...or 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 turns ON Control temp for cooling Control temp for heating Selected operating mode Selected operating mode Remote controller display 2 deg 1 deg 1 deg 3 deg 2 deg 2 5 deg 3 deg Thermostat ON ON OFF ...

Page 62: ...harge 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 heating mode There is no priority order between the room temperature control and discharge air temperature control Relation between thermostat ON OFF and room temperature control discharge air temperature ...

Page 63: ...2 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 operation can be used Check the flap and flap motor The swing operation can be set for the flap 10 Filter Sign When accumulated operating time of the indoor unit reaches the set time the filter sign appear...

Page 64: ...e 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 thermostat ON LL during thermostat OFF For details on T see 1 Room Temperature Control ...

Page 65: ...F 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 remote controller To enable this function set the indoor EEPROM DN31 to 0001 in advance 13 T10 Terminal Using the T10 terminal each indoor unit can be operated or stopped separately Also operating con...

Page 66: ...t 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 Silhouette Ducted 4 deg 2 deg T2 Ceiling 4 deg 2 deg K1 Wall Mounted 2 deg 2 deg K2 Wall Mounted Type 15 36 3 deg 2 deg Type 45 106 2 deg M1 Slim Low Static Ducted 4 deg 2 deg P1 Floor Standing 0 deg 2 de...

Page 67: ...PAIR 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 Pumping Out Refrigerant from Outdoor Unit 3 15 8 Compressor 3 18 Contents ...

Page 68: ...sure 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 Cover A removal Remove the cover A remove 1 screw Front panel Fig 1 Cover A ...

Page 69: ...of 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 over 0 06 over 4 0 Changing the oil and system cleaning with dry cores are necessary Motor burnout Brownish blackish Pungent burnt odor Changing the oil and system cleaning with dry cores are necess...

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 recovery unit with the recovery cylinder and methods used for recovery follow the specific instructions that came with the refrigerant recovery unit CAUTION 5 Locate the AP pin on the control PCB in the fau...

Page 71: ...trol 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 permit turning off power to refrigerant recovered indoor units independently Power can independently be turned off for indoor unit where refrigerant is recovered Change controllable number of indoor un...

Page 72: ...ed 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 of all units 5 Use hoses to connect the manifold gauge valves refrigerant recovery unit and refrigerant recovery cylinder with each other Fig 3 Do each connection quickly to prevent air from entering...

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 stop operation at all units Then immediately fully close the gas tube valve on the outdoor unit where pump down is being performed If the outdoor unit maintenance remote controller is unavailable shor...

Page 74: ...igerant 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 outdoor unit has opened then perform refrigerant recovery NOTE To determine the completion of refrigerant recovery follow the instructions that came with the refrigerant recovery unit Remaining refrigerant ...

Page 75: ...y 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 pin Again feed nitrogen gas to obtain a system pressure of 3 8 MPa Then measure both the outdoor ambient temperature and the pressure in the system Leave the system in this state for 1 full day and night...

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 remaining in the refrigerant circuit and causing operating problems Therefore never skip this step CAUTION 5 Turn the power ON at the outdoor unit where vacuum will be applied Then run the vacuum pump and cont...

Page 77: ...nters 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 as shown below Run the vacuum pump and evacuate the tank until the pressure falls to below 101kPa 755mmHg 5 Torr for the evacuation drying After the evacuation drying is finished fully close the upp...

Page 78: ...s 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 unit to be oil charged and then connect the high pressure outlet with push to release valve to the upper valve via the manifold gauge valves at Hi pressure gauge side In addition connect the gas tube ser...

Page 79: ...rocess 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 Open Open Close after approx 60 seconds Close Lower valve Completing oil charging To terminate the oil charging work do as follows To end the charge process first close the valve on the Hi side manifold g...

Page 80: ...del 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 outdoor unit has not been charged with refrigerant first charge with refrigerant then follow the instructions in 6 1 If Refrigerant Has Already Been Charged to Outdoor Unit and charge with oil Or alternativ...

Page 81: ...refrigerant 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 the CN RC connector 3P BLU on the outdoor unit control PCB Then start a test run of all units Press and hold the CHECK button for 4 seconds or longer 3 Use the outdoor unit maintenance remote controlle...

Page 82: ...Unit 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 push to release valve Perform the connection work quickly so that no air is allowed to enter them Fig 10 Connecting the refrigerant recovery cylinder is done to prevent pressure from rising excessive...

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 control PCB Then turn ON the outdoor unit power 7 Open both Hi and Lo side valves on the manifold gauge valves and recover the refrigerant remaining in the outdoor unit After that measure the amount of re...

Page 84: ...00 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 accepted requirements is 1 M JUDGMENT START Is there burning of the failed compressor motor Follow the instructions in 2 Discharging Compressor Oil and drain the oil from all compressors in the same sy...

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 fully close the high pressure gauge valve on the manifold gauge Next turn the power OFF at the repaired outdoor unit then remove the short circuit at the AP pin Finally fully open all valves on the gas...

Page 86: ...ores 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 the ball valve on outdoor unit where dry cores will be attached Then attach the dry cores 6 At outdoor unit where dry cores are attached pressurize with 3 8 MPa of nitrogen from the liquid tube service...

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 side 2 Cut the liquid tube at all outdoor units where dry cores will be attached then attach the dry cores and ball valves as shown in Fig 11 3 For the next steps see the steps 6 17 in A on the previou...

Page 88: ...Remove 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 because the suction tube showing in the figure is rigid and unmovable Remove each brazed part on the discharge side one location showing in the figure Protect the sensor part sheet metal area lubber l...

Page 89: ...ce 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 Monitor 4 11 6 Mode Settings 4 12 Contents ...

Page 90: ...it 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 during servicing A Service Checker Section CZ RTC4 l The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller to the outdoor unit PCB l Ordinary...

Page 91: ...yed 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 individual outdoor unit alarms Total operating time of outdoor unit compressors Oil level of the outdoor unit oil sensor Total outdoor unit power ON time Outdoor unit microcomputer version other informa...

Page 92: ...it 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 to 1 outdoor unit auto address setting for indoor units not completed both setting mode 1 and setting mode 2 can be used l The overall system status for that refrigerant system is displayed l is disp...

Page 93: ...can 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 used to start and stop a test run for all indoor units Press and hold for 4 seconds to turn ON During the test run is displayed The status of test runs performed from the indoor unit remote controller ...

Page 94: ...nected 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 power ON time 0 99999999 hours Compressor operation count 0 65535 times Alarm history 1 most recent Display only Alarm code and unit No of unit where alarm occurred are displayed alternately 0 CCU 1 4 Ou...

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 À Á and Â are displayed as shown in Fig 1 01 No of connected indoor units 4 units connected Sample displays 02 Unit Nos 1 2 3 and 4 are connected Fig 1 A A LED 1 2 3 A ...

Page 96: ...efore 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 illuminated Figure A When the last 4 digits are displayed the colon dot is OFF Figure B The display of the first 4 digits and last 4 digits changes automatically after 10 seconds The display can also b...

Page 97: ...s illuminates The display and operations are the same as for monitor mode using the indoor unit remote controller Á Press the button and select the indoor unit to monitor Â Press the temperature setting and buttons and select the item code of the temperature to monitor The unit No of the selected indoor unit and the temperature data are displayed Ã To end monitoring press the Check button The disp...

Page 98: ...eat 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 Inverter primary current L1 phase Low pressure sensor temp Suction temp SCT Temp sensor at refrigerant gas outlet of dual tube temp SCG High pressure Low pressure C MPa MPa Inverter primary current ...

Page 99: ...ess the button and select the outdoor unit for which to monitor the alarm history Â Press the temperature setting and buttons and select the item code for the alarm history The select outdoor unit address the item code and the alarm history alarm data are displayed The outdoor unit address is displayed as R C XX YY System XX Outdoor unit system address R C XX Outdoor unit system address YY Outdoor...

Page 100: ...ops 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 The setting data is displayed in 6 digits The display changes between the first 3 digits Fig A and the last 3 digits Fig B B B A A When the first 3 digits are displayed the bottom dot of the colon is i...

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: ...splay 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 Sensor info 6 Servicing check 8 Detailed settings Sel Page Confirm 20 30 THU Confirm 7 Simple settings Simple settings Unit no Code no Set data 01 3 1 0001 Sel Next 20 30 THU 3 Select the Code no by pr...

Page 103: ...is 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 all indoor units 4 Press the temperature setting select the item code to change buttons to 5 Press the timer time buttons to select the desired setting data For item codes and setting data see the f...

Page 104: ...ake 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 intake temperature 6 C down Electric heater installation 0000 No heater 0001 Heater installed Humidifying when heater thermostat is OFF 0000 No setting at time of shipping 0001 Yes Change to remote contr...

Page 105: ...r 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 cassette 60 60 Y2 2500 1250 0002 2 Way cassette L1 2500 1250 0003 1 Way cassette D1 2500 1250 0007 Ceiling T2 1500 750 0008 Wall Mounted K1 K2 150 75 0010 Floor Standing P1 150 75 0011 Concealed Flo...

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 remote controller which is given priority for selecting the operating mode If 2 or more remote controllers are set as priority remote controllers an alarm will occur at the remote controllers and operatio...

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 distribution is performed using an AMY central control system or similar system and when an optional electric heater is installed This is unrelated to control of the electric heater 08 Humidifying w...

Page 108: ...lay 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 Sensor info 6 Servicing check 8 Detailed settings Sel Page Confirm 20 30 THU 7 Simple settings Detailed settings Unit no Code no Set data 10 3 1 0001 Sel Next 20 30 THU 3 Select the Code no by pressing t...

Page 109: ...he 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 Press the temperature setting select the item code to change buttons to 5 Press the timer time buttons to select the desired setting data For item codes and setting data see the following page 6 Pres...

Page 110: ...Shifts 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 after operation starts 0002 Stops automatically 10 minutes after operation starts 0123 Stops automatically 615 minutes after operation starts 0124 Stops automatically 620 minutes after operation star...

Page 111: ...ng 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 C 0030 30 C Upper limit at shipment Upper limit Drying 0018 18 C Lower limit at shipment 0019 19 C Lower limit 0029 29 C 0030 30 C Upper limit at shipment Upper limit Auto heat cool 0017 17 C Lower l...

Page 112: ...temperature 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 delayed start 0001 1 second delayed stop Except Indoor unit Type U2 F2 T2 Y2 1 minute delayed stop Indoor unit Type U2 F2 T2 Y2 0002 2 seconds delayed stop 2 minutes delayed stop 0058 58 seconds dela...

Page 113: ...n 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 10 minutes 0002 Dew condensation prevention control after 20 minutes 0010 Dew condensation prevention control after 100 minutes 0011 Dew condensation prevention control after 110 minutes 0012 Dew con...

Page 114: ...ith 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 0000 Without fan operation 0001 1 minute 0002 2 minute 0118 118 minute 0119 119 minute 0120 120 minute Internal cleaning dry times when humidity is less than 70 0000 Without fan operation 0001 1 min...

Page 115: ...ermostat 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 operation starts can be set in increments of 5 minutes 1E Temperature shift for cooling heating change in auto heat cool mode Auto heat cool selects the operating mode automatically based on the difference b...

Page 116: ...en 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 system which can be started and stopped by the wired remote controller The ventilation fan can operate linked with the start and stop of the indoor unit or can be operated even when the indoor unit ...

Page 117: ...mode 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 the settings data at the same time 5E Humidifier ON time Sets the humidifier output ON time for when the humidifier is operating ON OFF control is performed during humidifier operation This setting t...

Page 118: ...rmostat 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 Functions Filter lifetime operating mode priority central control address and other settings Simple settings 7 Simple settings System address indoor unit address central control address and other settings ...

Page 119: ...oor 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 command from the wired remote controller Automatic reset Entire system stops Address change Change of indoor unit address Press the button Press and hold the button for 4 seconds or longer Press and hold ...

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 ECONAVI info on the LCD display and press the button button Select the Unit no by pressing the or button for changes Then press the button Display sensor information of the unit Refer to the informati...

Page 121: ...ally 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 or 21 is showing 0001 Step 2 Make the sensor that can detect a person Move back and forth and around for about 10 seconds under sensor activation Step 3 Check that Code no 12 or 22 can show 1 or more...

Page 122: ...Select 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 installing the indoor unit 2 Select 0 ECONAVI info on the LCD display and press the button 2 Under temperature shift State of energy saving temperature shift operation 4 Under sensor communication error S...

Page 123: ...press 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 data 2 Service contact 3 RC setting mode 4 Test run Sel Page Confirm Sel Page Confirm 20 30 THU Maintenance func 1 Outdoor unit error data 2 Service contact 3 RC setting mode 4 Test run 20 30 THU Confir...

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 be performed using the HEAT COOL or FAN operation modes To prevent continuous test runs this remote controller includes a timer function that cancels the test run after 60 minutes The operation is pos...

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 check 8 Detailed settings Sel Page Confirm 20 30 THU 7 Simple settings Sensor info Unit no Code no Data Sel Next 20 30 THU 01 02 00 0028 0026 0026 1 1 Sensor info Unit no Code no Data Scroll 20 30 THU ...

Page 126: ...mote 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 unit MOV pulse MOV Outdoor unit sensors Unit No 1 0A Discharge temp DISCH 0C High pressure sensor temp 0D Heat exchanger gas EXG 0E Heat exchanger liquid EXL 11 Outdoor air temp TO 12 Inverter second...

Page 127: ...er 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 If the display other than Normal or Unsupported appears check the Step next page Check that the nanoe X module status is Normal The indoor unit on the display can be scrolled up or down using buttons...

Page 128: ...r 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 Not connected There is no abnormality in the nanoe X module Use in the range of appropriate room temperature and humidity Specialization of the indoor unit can be checked by the operation of the airflo...

Page 129: ...mote 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 OFF continues or cycles OFF ON too frequently 6 26 Contents 2WAY SYSTEM Trouble Diagnosis Contents ...

Page 130: ...e 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 does not match with the outdoor unit model Multi split mini split Two or more indoor units are set as main in group control Two or more indoor units are set as priority indoor unit priority indoor uni...

Page 131: ...door 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 wiring P04 P03 P05 P20 P29 P31 P22 P16 Operating and timer lamps blinking alternately Timer and heat ready lamp blinking alternately Operating and heat ready lamp blinking alternately 1 Contents of Rem...

Page 132: ...oor 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 progress the number of detected indoor units connected to that system matches the number that was set and regular communications are occurring Both OFF Auto address setting is in progress Blinking alternate...

Page 133: ...0 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 phase only 6 12 H03 Compressor current sensor is disconnected or shorted 6 12 H05 Compressor discharge temperature sensor is disconnected shorted or misplaced DISCH 6 13 H06 Low pressure sensor value is...

Page 134: ...setting 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 in progress at another outdoor unit This alarm is not displayed on the remote controller Therefore check the blinking on the Outdoor Unit Control PCB Wait for auto address setting to be completed at ...

Page 135: ...number 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 Serial wire is disconnected at the outdoor unit 3 The power is OFF at all indoor units in the system Check 2 Check whether serial wire is disconnected at the terminal base 3 Check the power at the ind...

Page 136: ...CB 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 same point a location where temperature fluctuations are small and check whether there is a temperature difference Difference Õ Outdoor Unit Control PCB or sensor failure is possible No difference Õ Outdoo...

Page 137: ...ler 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 Alarm conditions 1 Short circuit A D step is 10 steps or less 2 Open circuit A D step is 1014 steps or more Probable cause 1 Sensor malfunction including connector 2 The Outdoor Unit Control PCB malfunct...

Page 138: ...le 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 a pressure sensor malfunction If an abnormality was found at the check items for a high pressure sensor malfunction first try replacing the PCB and check again 4 Check for clogging of the refrigerant ...

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 failure 2 Power supply voltage malfunction sudden voltage drop 3 The Outdoor Unit Control PCB or the HIC PCB failure Check 1 Wiring failure Forgot to connect the wires L N Check whether the terminal...

Page 140: ...V 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 Power supply and voltage malfunction Check 1 CT failure Check the power supply and voltage Check whether the voltage between each of the phases is correct while the compressor is running It is necess...

Page 141: ...curs 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 unit Correct clogging When refrigerant charge amount is insufficient charge refrigerant little by little When leak portion is detected and repaired charge recovered amounts of refrigerant 3 Dissolve ...

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 wrong decision of HIC PCB IPM Measure the resistance value between the side P and side NW of the HIC PCB Use the analogue tester when measuring Measure by the kΩ range Measure as single item PCB Remove ...

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 wrong decision of HIC PCB IPM Measure the resistance value between the side P and side NW of the HIC PCB Use the analogue tester when measuring Measure by the kΩ range Measure as single item PCB Remove ...

Page 144: ...2 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 at an outdoor unit heat exchanger EXL was 20 C or more above the outdoor air temperature TO continuously for 15 minutes or longer or the detected suction temperature SCT was 20 C or more above the o...

Page 145: ...e 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 superheating temperature is declining if the expansion valves MOV1 are opened to 300 pulses or more after checking for foreign object intrusion Check 2 Sensor failure This alarm is likely to occur when wiri...

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 are clogged 11 Check for expansion valve failure Check whether the expansion valves make a clattering sound when the power is reset Since the expansion valve in the indoor unit is in a location that m...

Page 147: ...is 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 than 0 See Section 1 2 With the indoor unit s EEPROM setting item code 0B set to 0001 the EXCT input was shorted Probable cause Check and Correction 1 System configuration 1 1 Is an O2 sensor being us...

Page 148: ...e 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 current Current A U 4LE2E5 U 5LE2E5 24 5 U 6LE2E5 Model name Current A U 4LE2E8 U 5LE2E8 15 2 U 6LE2E8 Inverter compressor HIC PCB Secondary current P22 Alarm Alarm code Alarm meaning Alarm conditions Pro...

Page 149: ...ample 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 Control PCB failure 3 Fan failure 4 Fan motor failure Check 1 Wiring check 1 1 Are the connctors CN FM firmly connected to the Outdoor Unit Control PCB lock engaged If Yes see 2 1 If No correct the co...

Page 150: ...OV1 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 the tester to the 12 V range if the value displayed is approximately 4 V then the voltage is normal When the voltage is normal measure the resistance between each pair of pins on the electronic cont...

Page 151: ...racteristics 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 40 50 60 10 55 50 45 40 35 30 25 20 15 10 9 8 7 6 5 4 3 1 2 Resistance Resistance Resistance Temperature C Temperature C Temperature C ...

Page 152: ...oor 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 tube SCG 40 35 30 25 20 15 10 5 0 10 15 20 20 20 30 40 50 60 15 10 5 0 5 8 7 6 5 4 3 2 1 0 Resistor kΩ Temperature C Compressor discharge gas temp sensor DISCH 0 90 80 70 60 50 40 30 20 10 0 40 60 80 ...

Page 153: ...hen 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 Relay RY506 Crankcase heater CH Output Relay RY504 3 4 1 2 Relay RY505 4 way valve 20s O2 OPTION Operation Operation Output U 4LE2E8 U 5LE2E8 U 6LE2E8 Relay RY5 Oil recovery valve ORVR Relay RY3 Crankc...

Page 154: ...r 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 maintenance remote controller to RC socket on outdoor unit main control PC board and check alarm messages Replace discharge temperature sensor 2 3 Yes No 2 3 Demand value always stays low The value ...

Page 155: ...eparing 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 Diagnosis Function Table and Contents of Alarm Display 7 16 ...

Page 156: ...he 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 before attempting test run Power mains switch 6 Both the gas and liquid tube service valves are open If not open them now Gas tube Liquid tube 7 Request that the customer be present for the trial run...

Page 157: ...multiple 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 place Are LEDs 1 and 2 on outdoor unit P C board OFF Does system operate If the terminating resistance pin on outdoor main unit P C board is made link wiring more than 2 refrigerant systems set to OP...

Page 158: ...door 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 drawing see the page 7 7 CN RC CN TERMINAL ...

Page 159: ...Run 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 CN OC CN EMG AP CN RC ...

Page 160: ...ON 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 setting SW3 1P DIP switch 10 Indoor unit setting SW4 Rotary switch 1 ON 10 12 unit 1 9 unit factory setting 1 unit 1 ON Set to 0 2 Set to 1 9 OFF ON Both OFF Both ON 1 ON 2 ON Set to 1 Set to 1 Set to ...

Page 161: ...2 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 CN RC CN TERMINAL U U 4LE2E5 U 5LE2E5 U 6LE2E5 U 4LE2E8 U 5LE2E8 U 6LE2E8 ...

Page 162: ...gins 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 unit maintenance remote controller and content of alarm message will be checked RUN pin 2P BLK When short circuited and pulse signal is given all indoor units operate in the same refrigerant system ST...

Page 163: ...re 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 setting is controlled by the remote controller perform auto address setting by the remote controller after step 3 described above 4 Auto Address Setting Example Basic Wiring Diagram 1 Case of no link...

Page 164: ...stem 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 Inter unit control wiring Inter unit control wiring 2WAY VRF Remote Controller Indoor unit Inter unit control wiring Central Controller Unit 1 setting outdoor main unit System address System 2 setting...

Page 165: ...e refrigerant 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 number of indoor units connected to the outdoor unit set the Dip switch SW3 for setting the number of indoor units on outdoor main unit control P C board to 0 1 ON ON OFF and set the Rotary switch SW4 ...

Page 166: ...controller 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 Wired Remote Controller CZ RTC5A CZ RTC5B 4 Select the O D unit no by pressing the or button Select one of the O D unit no for auto address by pressing the or button Approximately about 10 minutes are re...

Page 167: ...This 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 setting Alternately Auto address setting completed There are inconsistencies between the number of indoor units and setting number of indoor units at the time of auto address setting Simultaneously See th...

Page 168: ...ich 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 more seconds The Maintenance func screen appears on the LCD display Maintenance func 1 Outdoor unit error data 2 Service contact 3 RC setting mode 4 Test run Sel Page Confirm 20 30 THU 2 Press the or bu...

Page 169: ...splay 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 test run is in progress The temperature cannot be adjusted when in Test Run mode This mode places a heavy load on the machines Therefore use it only when performing the test run 2 The test run can be p...

Page 170: ...plug 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 countermeasure When turning ON power to the outdoor main unit LEDs 1 and 2 illuminate or blink excluding going out Auto address setting is not available See Contents of Alarm Display and make corrections When...

Page 171: ...r 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 are displayed addresses will be installed in the recognized indoor units The installed addresses can be checked by the remote controller See the section Checking the indoor unit address When operating ...

Page 172: ...ly 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 Compressor HIC has failure HIC is overcurrent or overheat VDC is undervoltage or overvoltage L01 Indoor unit address setting has error No main indoor unit in group control L02 Indoor unit model does not match...

Page 173: ...ure 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 protector for Indoor unit fan motor is activated P10 Float switch of drain pan safety is activated P11 Drain pump failure or locked rotor P12 Indoor unit fan inverter protection control is activated F...

Page 174: ...erant 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 units of VRF systems is not connected to the inter unit control wiring it is not necessary to make the terminating resistance invalid OPEN side Make final confirmation regarding the central controller ...

Page 175: ...201803 ...

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