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3-WAY ECO-i MULTI SYSTEM 5 series

1. 1 Measure the sensor resistance Check that the sensor is operating normally 2 Use a remote monitor or a PC monitor to check the temperature that is recognized by the microcomputer Correction Example F31 Alarm AA Outdoor unit non volatile memory EEPROM trouble Alarm conditions Non volatile memory is not present when power initialization occurs Read values do not match after writing to non volatile memory is complete Probable cause 1 Memory was not inserted after the PCB was replaced Non volatile memory is installed incorrectly wrong direction bent pins etc Correction J o SO ECT J oo SOS Notes l S O 1 2 1 2 The lifetime of the non volatile memory has been reached 3 1 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis H11 H12 H21 H22 Alarm Alarm code Alarm meaning Alarm conditions H11 Constant speed compressor 2 overcurrent alarm H12 Constant speed compressor 2 lock current alarm H21 Constant speed compressor 3 overcurrent alarm H22 Constant speed compressor 3 lock current alarm Hx1 During operation the compressor current value exceeded 20 A for 30 seconds or longer However this alarm is not detected for 4 seconds after the compressor starts Hx2 During operation the compressor current value exceeded 29 A for 4 seconds or longer However this alarm is not detected for 2 seconds after the compressor starts Probable
2. and are displayed alternately Example shows display of 0000 0001 0 Sensor input not present Control is performed 1 Sensor input present Control is performed 2 Sensor input not present Control is not performed 3 Sensor input present Control is not performed 0 Disabled 1 Quiet mode 1 2 Quiet mode 2 3 Quiet mode 3 4 Quiet mode 4 0 None 1 Discharge temp control only Mode 3 2 Demand only Mode 2 3 Discharge temp control Demand Mode 1 0 0 1 40 4 70 7 100 8 120 9 140 10 160 11 200 12 1 no limit 0 0 1 40 4 70 7 100 8 120 9 140 10 160 11 200 12 1 no limit 0 Disabled 6 High static pressure mode Charge when the external static pressure is increased to over 30 Pa Demand 2 current High static pressure mode 3 WAY ECO i SYSTEM 6 Mode Settings Outdoor Unit Maintenance Remote Controller E Setting mode 2 lt Operating procedure gt O Press and hold the CHECK button button and button simultaneously for 4 seconds or longer Use the temperature setting Ta and _ _ buttons to change the item code The item codes and setting data are shown in the table below ME coma enr annn LILI Use the timer time 4 and 5 buttons to change the setting data To confirm the changed setting data press the button At this time aga stops blinking and remains lit During this mode
3. nan Area with High Winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a Snowy Area for Heat Pump type Systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents When Connecting Refrigerant Tubing Ventilate the room well in the event that is refrigerant gas leaks during the installation Be careful not to allow contact of the refrigerant gas with a flame as this will cause the generation of poisonous gas Keep all tubing runs as short as possible Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run Depending on the system type liquid and gas lines may be either narrow or wide Therefore to avoid confusion the refrigerant tubing for your particular model is specified as either narrow or wide than as liquid or gas When Servicing Turn the power OFF at the main power box mains before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from 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 being serviced Ventilate
4. To clear the alarm history press the button The outdoor unit alarm history will be cleared To exit press the CHECK button The display returns to the normal remote controller display 3 WAY ECO i SYSTEM 6 Mode Settings Outdoor Unit Maintenance Remote Controller E Setting mode 1 lt Operating procedure gt Press and hold the CHECK button and E VENTILATION button simultaneously for 4 seconds or longer Use the temperature setting and Cy _ buttons to change the item code The item codes and setting data are shown in the table below Display of first 4 digits Use the timer time 4 and 5 buttons to change the setting data To confirm the changed setting data press the button At this time aga stops blinking and remains lit During this mode aiid is displayed blinking The outdoor unit address display section displays ALL the item code number DN value in the table and the setting data 8 digits The setting data is displayed in 8 digits The an display changes between the first 4 digits Fig J _ A and the last 4 digits Fig When the first 4 ea oai Ui Y digits are displayed the bottom dot of the colon is Lf lit To exit the setting mode press the CHECK button DROKK NC JCB
5. Correction 1 Replace the sensor 2 Replace the outdoor unit PCB 3 Correct the problem locations All of the probable causes Operates continuously for a set length of time Indicates 2 5 minutes or longer for an inverter unit and 30 seconds or longer for a constant speed compressor 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis P04 Alarm Alarm code POS S O Alarm meaning High pressure switch activated Alarm conditions The operation of the electronic circuit in the high pressure switch may short circuit the terminal depending on the pressure A pressure of 3 3 MPa or above will short circuit the terminal Once the terminal is short circuited it will remain in that state until the pressure goes below 2 6 MPa Failure of the check valve in the compressor discharge tube The service valve is closed Clogging of the outdoor heat exchanger during cooling An air short in the outdoor unit during cooling Failure of the outdoor fan during cooling Clogging of the air filter in the indoor unit during heating An air short in the indoor unit during heating Failure of the indoor fan during heating Clogging of the refrigerant circuit 0 Failure of the mechanical valve 11 Failure of the solenoid valve kit 12 Too much refrigerant has been charged 13 Failure of the high pressure switch 14 The wiring from the solenoid valve kit is actually connected to the different indoor unit 15 The sy
6. NYO SERVICE MANUAL 3 WAY ECO i MULTI SYSTEM 5 series SANYO j SANYO SANYO ang awg W Faran W Farna Outdoor Unit Class 70 115 130 140 Model Name SPW C0705DZH8 SPW C0905DZH8 SPW C1155DZH8 SPW C1305DZH8 SPW C1405DZH8 Indoor Unit Class 7 9 12 16 18 25 36 48 60 Neal bicch PW PW PW PW PW SPW SPW SPW SPW A ca E er DR74GXH56 A B XDR94GXH56 A B XDR124GXH56 A B XDR164GXH56 A B XDR184GXH56 A B XDR254GXH56 A B XDR364GXH56 A B XDR484GXH56 A B XDR604GXH56 A B emeconceals 075XH 095XH 125XH 165XH 185XH X255XH X365XH X485XH X605XH S xI X SPW xI S S 4 Way Air Discharge PW Semi Concealed M075XH 2 Way Air Discharge PW Semi Concealed R74GXH56 A B 1 Way Air Discharge PW Semi Concealed DR74GXH56B 1 Way Air Discharge Semi Concealed Slim PW PW PW PW M095XH M125XH M165XH M185XH PW PW PW Si PW R124GXH56 A B SR164GXH56 A B SR184GXH56 A B SR254GXH56 A B PW DR124GXH56B PW SPW SPW SPW DR124GXH56 A B LDR164GXH56 A B LDR184GXH56 A B LDR254GXH56 A B PW R124GXH56 A B 25XH 25XHN R124SXH56B 25SXH 25SXHT 165SXHT U185SXHT S U U U U U U PW SPW U S TI T S K PW R94GXH56 A B PW DR94GXH56B PW DR94GXH56 A B PW R94GXH56 A B 095XH 095XHN R94SXH56B LPO NW XU X KM To SPW UR74GXH56 A B U075XH Concealed Duct U075XHN UR74SXH56B U075SXH 095SXH U075SXHT 095SXHT
7. Check that all units are operating in Cooling mode If all units are operating in Heating mode perform the steps listed below With the 3 way valve it is difficult to determine whether operation is heating or cooling by touching the tubing Release the short circuit at the test run pin CNO23 on the outdoor unit control PCB of the No 1 unit Then short circuit the stop pin CN104 to stop operation Short circuit the mode change pin CN101 on the outdoor unit control PCB of the No 1 unit Switching of the 4 way valve occurs immediately before operation starts Therefore it does not change at this time Mode change cannot be judged from the sound Short circuit the test run pin CN023 on the outdoor unit control PCB of the No 1 unit Then check the displays of the indoor unit remote controllers Check that all units are operating in Cooling mode 5 2 2 Refrigerant recovery procedures 1 using indoor unit ball valve 1 If a ball valve with a service port has been provided in the indoor unit as shown in Fig 8 follow the instructions given in 2 through 6 below If the service port is instead located in the outdoor side follow the instructions in 5 2 3 Refrigerant recovery procedures 2 2 After running the unit in Cooling mode for about 5 minutes as described in 5 2 1 Cooling operation for all units fully close the discharge line the liquid line ball valve and indoor unit ball valve 3 Run the u
8. Lower limit at shipment 0029 Lower limit 0030 30 C Upper limit at shipment Iz 0017 17 C Lower limit at shipment ca 0018 ge co 0026 Lower limit 0027 27 C Upper limit at shipment ERT 0000 H f t 0001 Ignore heat exchanger temperature conditions 0000 Filter input differential pressure switch input Filter CN70 input 0001 Alarm input for trouble input about air cleaner or similar device switching 0002 Humidifier input Operates linked with drain pump when humidifier is ON Indoor unit electronic 0000 Present Setting at shipment Upper limit Drying at e al ai a Auto heat cool control valve 0002 None 0000 Normal Used as optional relay PCB or JEMA standard HA terminal T10 terminal switching 0001 Used for OFF reminder 0002 r 3 3 WAY ECO i SYSTEM 2 Detailed Settings Function Remote Controller Functions Item code Setting data e Description 0000 No forced operation Automatic drain pump 0001 Forced operation for 1 minute operation 0060 Continuous operation 0000 None Gomer tion 0000 _ Ep il eae te T0001 0001 Ventilation fan operated by remote controller EN remote controller 0000 Not used Body sensor is used sensor 0001 Remote control sensor is used Operation change 0000 Normal displayed control in progress display 0001 Not displayed or when weekly timer is used 0001 Only stop time setting is enabled Discha
9. PW SPW PW SPW High Static Pressure DR254GXH56 A B DR364GXH56 A B DR484GXH56 A B DR764GXH56 A B DR964GXH56 A B 85464849271000 REFERENCE NO SM830171 00 IMPORTANT Please Read Before Starting This air conditioning system meets strict safety and operating standards As the installer or service person it is an important part of your job to install or service the system so it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning 6 Follow each installation or repair step exactly as shown O Observe all local state and national electrical codes 6 This product is intended for professional use Permission from the power supplier is required when installing an outdoor unit that is connected to a 16 A distribution network O Pay close attention to all warning and caution notices given in this manual AN ura AN If Necessary Get Help These instructions are all you need for most installation sites and maintenance conditions If you require help for a special problem contact our sales service outlet or your certified dealer for additional instructions This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage In Case of Improper Ins
10. Snowfall Sensor Functions Outdoor EEPROM 04 A unit identified as having a snowfall sensor attached will periodically send a signal indicating the snowfall sensor input status to all outdoor units in the same system or all wired outdoor units in the case of linked systems It is therefore unnecessary to install and wire multiple snowfall sensors 1 Snowfall sensor settings Setting Operation 0 Sensor input not present Control is performed Setting at time of factory shipment 4 Sensor input present Control is performed 2 Sensor input not present Control is not performed 3 Sensor input present Control is not performed If the snowfall sensor is used then depending on the circumstances it is necessary to make the correct setting at all outdoor units in the system If control is not performed is set control by the above signal is ignored This setting is used in order to conserve energy at outdoor units that include a snowfall protection hood Recommended If a low speed fan mode is required for all year cooling or other reasons install a snowfall protection hood and set this setting to ON 2 Control operation 1 Outdoor units where sensor input present is set send the snowfall sensor input information every 10 minutes to all linked systems if the system wiring is linked 2 At systems where control is performed is set the above information is used to control operation of the outdoor fan
11. both the balance valve and recovery valve turn ON at this time B Oil supply outdoor unit The balance valve turns ON and remains ON The bypass valve repeatedly turns ON and OFF according to a fixed cycle When the balance valve is ON the oil in the oil separator is discharged into the balance tube The bypass valve releases high pressure gas which forces this oil toward the oil receiving outdoor unit and flushes out the balance tubes The operation of this bypass valve allows oil to be supplied even when there is a difference in height between the outdoor units 5 1 5 Indoor unit refrigerant oil self recovery control Refer to the items concerned with indoor unit special control 1 16 f 3 WAY ECO i SYSTEM 6 Operation of Solenoid Valves Control Functions 6 1 Refrigerant Control Valve RCV The main purpose of this valve is to detect the flow of refrigerant refrigerant volume on the indoor unit side when the outdoor unit heat exchanger is functioning as a condenser When the valve determines that there are signs of a low refrigerant level refrigerant is supplied from the receiver tank to the system 1 The OFF conditions take priority over the ON conditions for this valve 2 This valve is OFF when the outdoor unit is stopped 3 This valve is ON when special control is in progress Hp 4 Control during normal operation A Cooling operation e This valve turns ON when symptoms of insufficient refrigerant gas occur at
12. connector Fig 11 7 2 Evacuating Refrigerant Tubing Between Indoor and Outdoor Units Refer to the Installation Instructions that came with the outdoor unit E y 3 WAY ECO i SYSTEM 8 Charging Compressor Oil Outdoor Unit Repair Procedures 8 1 If Refrigerant Has Already Been Charged to Outdoor Unit Be sure to use an exclusive oil charging tank for charging compressor oil Prior to charging carry out vacuum drying inside the tank and take care that no air in the form of bubbles is permitted to enter the tank The oil charging procedures are given below The receiver tank used for maintenance may be used as an exclusive oil charging tank When installing the oil charging tank to the refrigerant system to DPR 623 081 7937 serve as a safety bypass circuit for refrigerant connect it to the suction line service port carefully Nipple to avoid releasing refrigerant into the atmosphere Receiver tank 638 015 2988 Perform oil charging AN work carefully so that no Packless valve liquid refrigerant enters the charging tank Fig 12 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 101 kPa 755 mmHg 5 Torr for the evacuation drying After the evacuation drying is finished
13. control In some cases the control shown below may stop the compressor issue a warning or reduce the compressor capacity 1 Air discharge temperature protection During operation when only a single outdoor unit is installed the air discharge temperature level is determined the highest value is used and the compressor capacity is limited by using the air discharge temperature of the operating compressor as shown in the tables below Air discharge temperature level Highest level among the air discharge temperature levels of all compressors The values shown in the table above are reduced to the values calculated by roadmap control 3 WAY ECO i SYSTEM 3 Compressor Control Control Functions 2 Current protection Inverter compressor current control is composed of primary current control and secondary current control Current protection control for the inverter compressor is performed by self protection in the inverter circuit and does not increase or decrease the compressor capacity o Operation stops instantaneously due 75 or 150 C Thermostat OFF to activation of hybrid IC Thermostat OFF Operation stops for 18 5 or above Thermostat OFF 100 ms for current protection 26 5 14 5 18 5 Horsepower decreased 14 Less than 14 5 Prohibit horsepower increase Less than 14 Permit horsepower increase 3 6 5 Roadmap control after trip When restarting after trip stop occurs the horsepower may increase slowly dependi
14. lt O D 5 o as NIN Oo OJN al P29 H11 alala lalalalala S S TI wo r 3 WAY ECO i SYSTEM 2 Outdoor Unit Control Panel LED Display Trouble Diagnosis O ON xt Blinking OFF LED RED Display meaning After the power is turned ON and automatic address setting is not in progress no communication with the indoor units in that system is possible After power is turned ON and automatic address setting is not in progress 1 or more indoor units are confirmed in that system however the number of indoor units does not match the number that was set Automatic address setting was completed successfully After the power is turned ON and automatic 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 Automatic address setting is in progress At time of automatic address setting the number of indoor units did not match the number that was set Alarm display poe LED 1 blinks M times then LED 2 blinks N times The cycle then repeats Blinking alternately M 2 Palarm 3 Halarm 4 Ealarm 5 F alarm 6 L alarm N Alarm No Example LED 1 blinks 2 times then LED 2 blinks 17 times The cycle then repeats Alarm is P17 3 WAY ECO i SYSTEM 3 Remote Controller Servicing Functions Trouble Diagnosis Sensor temperature display function displayed both when unit is
15. 2 Use a remote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer Exampe fm A A Probable cause F12 Alarm Alarm code F12 Alarm meaning Compressor intake temperature sensor trouble Alarm conditions 1 A D step is 10 steps or less short circuit 2 A D step is 1014 steps or more open circuit Probable cause 1 Sensor malfunction including connector 2 PCB malfunction Check 1 Measure the sensor resistance Check that the sensor is operating normally 2 Use a remote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer CA ETT fo ACE d gt o f 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis F16 Alarm Alarm meaning High pressure sensor trouble abnormal rise in high pressure In some cases this may not be the result of a high pressure sensor malfunction Alarm conditions e High pressure SW activated although the detected pressure was lower 3 03 MPa or below than the high pressure SW activation pressure Undershift e High pressure SW failed to activate although the detected pressure was higher 3 43 MPa or above than the high pressure SW activation pressure Overshift e The saturation temperature at the detected pressure is 5 C or more below the highest indoor unit E1 temperature continuously for 30 minutes e High pressure sensor disconnected or open circuit Probable
16. 3 At systems where control is not performed is set the snowfall sensor input and above information ignored and the outdoor fan does not operate 4 In the case of a W Multi system control can be performed when snowfall sensor input is connected to any outdoor unit lt Caution gt Snowfall sensor input information is detected once every 10 minutes Therefore the outdoor fan may continue operating for up to 10 minutes even when there is no snowfall sensor input In addition the outdoor fan may remain stopped for up to 10 minutes when snowfall sensor input is present 19 2 Function for Automatic Judgment of Insufficient Refrigerant Gas and Overcharge This system includes a simple function for judging the level of refrigerant However be aware that false judgments may occur if the control elements of the outdoor unit or indoor unit fail 1 Starting refrigerant level judgment mode Short circuit the CHECK pin on the No 1 outdoor for 4 seconds or longer to engage this mode The LED on the outdoor unit PCB begins blinking 2 Conditions for refrigerant level judgment After judgment mode starts judgment occurs when all outdoor units in the system have been operating continuously for 30 minutes or longer Refrigerant level judgment requires that all outdoor units operate continuously for 30 minutes or longer This is in order to prevent incorrect adjustment of the refrigerant level based on false detection caused by refr
17. Functions 0 0000 tees 5 5 4 3 WAY ECO i Alarm COd8S ooococccoc teens 5 7 5 Blinking Inspection Display 0 ee eee 5 27 6 Inspection ol Pants isco aa ek ane ee wee ale ae patel eee tien te ete a ian 5 29 La TOSUPIN ace t a a Rae ee Pee eee pn A date 5 30 O N OY 2 oh ee ee ee do do dd dd dd Y O AN Oo bb OQ N Os 3 WAY ECO i SYSTEM Control Functions 1 CONTROL FUNCTIONS Introduction iros cir A A 1 2 Selecting Outdoor Unit for Operation 0 0c eee eee 1 3 Compressor Control oo a bee 1 4 Special Controls oooicidari ei hake a aaa aa a te eed bes 1 11 Other Controls saysi me NR A at See ea 1 16 Operation of Solenoid Valves 0oooooccorororrr 1 17 Outdoor Unit Electronic Control Valves MOV1 MOV2 MOV3 MOV4 1 19 Outdoor Fan Control aii Ree ieee ea eee eee eas 1 21 Demand Control yc it E A wR a 1 22 Indoor Unit Control of the Electronic Control Valve o o o ooooo 1 23 Solenoid Valve Kit Control 2 2 0 cece eee eee 1 25 Indoor Special Control 5334 02464 teed vin Ae ee ket a ees 1 26 Discharge Temperature ooomccicia ee ee eee ee ee ee 1 27 Current Protection sit a A keene eet ees 1 28 LOW OV Alanm ios wns oi A ee eames Med distal 1 29 Pressure Sensor Failure 000 cc eee 1 30 Backup Operation coria dew eee ee eee oe 1 31 Service Maintenance Functions 00 cece eee eee eee eee 1 33 Other Functions sneri wo
18. If the sensor is malfunctioning replace it Exampe Jooo SOS Notes The discharge temperature sensor is generally a sensor intended for accurate detection of high temperatures Therefore it will not accurately detect the temperature if the temperature at the measurement point is 20 C or below 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis HO6 Alarm Alarm meaning Abnormal low pressure drop Alarm conditions A report occurs during A C operation when the low pressure sensor installed at constant low pressure parts detects a pressure of 0 05 MPa or less continuously for 2 minutes or an instantaneous pressure of 0 02 MPa or less These values represent abnormal low pressure which may damage the compressor However the alarm does not actually occur the first 2 times that the above operation takes place At these times the outdoor unit is stopped and the conditions are monitored The alarm occurs when the above operation occurs for the fifth time The first 4 times before the alarm occurs are called pre trip After pre trip occurs if the low pressure sensor detects a pressure of 0 15 MPa or more for 3 minutes of continuous operation the pre trip count is reset to 0 If the low pressure sensor detects a pressure of 0 16 MPa or less continuously for 30 minutes when the compressor is stopped an alarm occurs immediately no pre trip Probable cause The A C unit low pressure has dropped to a level that does not occ
19. This is done in order to balance the pressure within the heat exchanger With types D and GU this control is activated after defrost control is completed turning the thermostat OFF for 3 minutes 12 2 Indoor Unit Thermostat ON OFF Delay Timer 1 After the thermostat turns ON at an indoor unit the thermostat will not be turned OFF by the room temperature thermostat or discharge temperature thermostat for a period of 3 minutes However if the condensation temperature reaches or exceeds the PX temperature the thermostat turns off in order to prevent overload 2 After the thermostat turns OFF at an indoor unit the thermostat will not turn ON again for a minimum of 3 minutes 12 3 Indoor Unit Refrigerant Oil Self Recovery Control This control is performed periodically only during cooling operation 1 At indoor units which are stopped operating in fan mode or where the thermostat is OFF the electronic control valve is opened for 1 2 minutes 2 At indoor units where the thermostat is ON the electronic control valve position is opened by 10 pulses from the current position y 3 WAY ECO i SYSTEM 13 Discharge Tem peratu re Control Functions lt Alarm Information gt 1 Discharge temperature protection alarm This device sets an upper limit discharge temperature of 105 C for all compressors When the discharge tem perature reaches 105 C that compressor is stopped and restarted If the same high discharge condition
20. a tool to determine whether the trouble is a PCB failure or CT failure HO5 H15 H25 Alarm Alarm code H05 H15 H25 Alarm meaning Compressor 1 discharge temperature sensor disconnected Compressor 2 discharge temperature sensor disconnected Compressor 3 discharge temperature sensor disconnected Alarm conditions e This alarm occurs when the discharge sensor temperature detector is not inserted into the tube s sensor holder or when the sensor itself has suffered some kind of malfunction other than a cut wire e When outdoor air temperature is 4 C or higher Alarm occurs if the temperature detected by the discharge sensor has changed by less than 2 C when the compressor has operated for 10 minutes immediately after start e When outdoor air temperature is below 4 C Alarm occurs if the temperature detected by the discharge sensor has changed by less than 2 C when the compressor has operated for 30 minutes immediately after start Check Check that the discharge temperature sensor is inserted into the sensor holder Check that sufficient heat conducting putty is applied Remove the discharge sensor from the sensor holder and expose the sensor to the outside air for approximately 5 minutes Check that the temperature detected by the sensor changes to match the outside air temperature However the sensor cannot detect temperatures at or below 0 C 1 Install the sensor into the holder and apply sufficient heat conducting putty 2
21. an indoor unit e This valve turns ON when the outdoor air temperature is 15 C or below Under these conditions the high pressure is low and refrigerant flow becomes poor e This valve turns OFF when symptoms of refrigerant overcharge are detected at the outdoor unit B Mixed cooling heating operation 3 e The RCV turns ON at stopped outdoor units when the heat exchanger at another outdoor unit is functioning as a condenser 6 2 Refrigerant Balance Valve RBV Gas Purge Valve The main purpose of this valve is to detect the flow of refrigerant refrigerant volume on the indoor unit side when the outdoor unit heat exchanger is functioning as an evaporator When the valve determines that there are signs of excess refrigerant refrigerant is recovered at the receiver tank This valve is ON during heating operation and when the outdoor unit heat exchanger is functioning as an evaporator during mixed heating cooling operation It also turns ON in order to recover refrigerant at the outdoor unit after heating operation is stopped This valve is never ON at the same time as the RCV 1 The OFF conditions take priority over the ON conditions for this valve 2 This valve turns ON for 30 50 seconds after the outdoor unit stops and then turns OFF 3 This valve turns ON once after the outdoor unit starts A Heating operation e This valve turns ON when poor refrigerant flow at an indoor unit is detected and when symptoms of o
22. any enclosed areas when installing or testing the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas Confirm after installation that no refrigerant gas is leaking If the gas comes in contact with a burning stove gas water heater electric room heater or other heat source it can cause the generation of poisonous gas Check of Density Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out its density will not exceed a set limit The refrigerant R410A which is used in the air conditioner is safe without the toxicity or combustibility of ammonia and is not restricted by laws imposed to protect the ozone layer However since it contains more than air it poses the risk 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 importantly the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners If a single unit of the multi air conditioner system is to be installed in a smal
23. caution The connecting port employs a Schrader type valve When disconnecting the hose pressure will be applied from the refrigerant in the outdoor unit 12 Follow the instructions in 10 2 4 Dry core cleaning and perform dry core cleaning of all outdoor units 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 10 2 4 Dry core cleaning If burning or other failures occur repeatedly at compressors within the same system in many cases the cause is acid sludge carbon or other substances that remain in the refrigeration cycle as the result of insufficient cleaning If when the oil is inspected there is an outdoor unit where the oil color phase is 4 0 or higher or where a sharp odor is present carry out all steps below to perform dry core cleaning A If a ball valve is installed on the outdoor unit 1 Refer to 5 2 1 Cooling operation for all units and operate all outdoor units in either Heating or Cooling mode 2 Ifall units are operated in Cooling mode close first the liquid tube service valve then the ball valve on all outdoor units where dry cores will be attached If all units are operated in Heating mode close first the ball valve then the liquid tube service valve on all outdoor units where dry cores will be attached This step is performed in order to expel refrigerant from the tubing between the liquid tube service valve and the ball valve Approximately 4 5 seconds is a sufficient interval
24. code to change Press the 4 button to return to normal remote controller display RCS TM80BG Display shows a discharge temperature of OOXX at unit No 1 1 In case for example the display shows 0085 in the figure above a discharge temperature from the outdoor unit stands for 85 C Fig 4 The temperature display appears as for units that are not connected If monitor mode is engaged while normal operation is in progress only the parts of the LCD display shown in the figure will change Other parts continue to display the same information as during normal operation wets E 3 WAY ECO i SYSTEM 3 Remote Controller Servicing Functions Remote Controller Functions Indoor unit sensors Outdoor unit sensors Unite Fite unio oE dd oa a a Draen OOOO O p e CT c ac Highpressure sensortemp SSS o f o f ao eat veranger gas t Heat exchanger liquid 1 KEE Discharge temp Heat exchanger gas 2 07 Discharge temp setting Heat exchanger liquid 2 Outdoor air temp EN Position of indoor unit electronic EN control valve For inspection a o Ca e ooo rar mapeo 56 Forinspection s7 Discharge temp 3 O O y e e SS ss Pc so se as o o e as a oe Pd 3 WAY ECO i SYSTEM Trouble Diagnosis 5 TROUBLE DIAGNOSIS Contents of Remote Controller Switch Alar
25. different unit as unit No 1 in order to use manual backup operation 5 7 A 3 WAY ECO i SYSTEM 2 Selecting Outdoor Unit for Operation Control Functions 2 1 Outdoor Unit Operating Rules Because in this system all outdoor units contain an inverter compressor ordinarily there is no absolute order of priority for compressor operation Therefore there is no order of priority for the outdoor units However it is possible to operate the outdoor units in sequence beginning with unit No 1 by using the outdoor unit maintenance remote controller to change the outdoor unit EEPROM settings For information concerning EEPROM settings refer to the field application functions 2 2 Delayed Start of Outdoor Units 1 Delayed start of outdoor units in the same system If it is necessary to operate the compressors simultaneously at multiple outdoor units each outdoor unit will start beginning with unit No 1 after a delay of a number of seconds equivalent to the outdoor unit address The units do not start simultaneously This is in order to reduce the load on the power receiving equipment Outdoor unit Outdoor unit gt Outdoor unit address 1 address 2 address 3 Starts after 1 second Starts after 2 seconds Starts after 3 seconds 2 Delayed start for each system At the time of factory shipment delayed start for each system is not set to occur Therefore when systems a
26. horsepower Electronic control valve Valves at all indoor units operate at 480 pulses Indoor RAP valve kit Valve kits at all indoor units operate in Heating mode ON status units Fan Fan operates at the set fan speed stops or operates at L speed depending on the indoor unit operation mode 4 3 Defrost Control 4 3 1 Defrost control method This system uses the following 2 defrost methods 1 If there is 1 outdoor unit in the refrigerant system Reverse cycle defrost 2 If there are 2 or more outdoor units in the refrigerant system Outdoor unit cycle defrost 4 3 2 Constraint conditions 1 Frost detection does not occur for 5 minutes after operation starts 2 Defrost does not begin again for 35 minutes of A C operation after defrost was once completed 3 If all indoor units are stopped while defrost control is in effect or if the outdoor unit is stopped due to protection control or another reason then defrost control will not start for a minimum of 10 minutes after restart occurs 4 3 3 Frost detection A Frost detection does not occur for 5 minutes after operation starts B Frost is detected when either condition 1 or 2 below is met Condition 1 L2 line or below is detected twice each time continuously for 4 minutes when the compressor is operating Condition 2 L1 line or below is detected for a total of 60 minutes when the compressor is operating Heat exchange liquid temperature C a Defrosting
27. installing compressors use sufficient caution to ensure that moisture or other substances do not enter the refrigerant tubing system 10 3 1 Replacing compressors For all models 0705 1405 follow the replacement procedure below A Replacing the inverter compressor Compressor 1 on remote controller alarm display E Removal 1 Connect a manifold gauge to the high and low pressure outlet ports at the outdoor unit where the compressor will be replaced Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement in the outdoor unit tubings 2 Follow the instructions in 1 Removing Panels and 2 Removing Electrical Component Box and Duct and remove the corresponding parts from the outdoor unit where the compressor will be replaced Remove the cap at the compressor terminal plate Disconnect the power terminal Remove the crankcase heater Remove the 3 bolts and remove the washers and rubber washers quantities indicated in the figure below Disconnect the tube with flare nut using two adjustable wrenches At this time cover the tube in place with waste cloth while watching out for oil leaks Then cap the disconnected tube and mount the flare nut on the compressor Tighten the flare nut with a seal bonnet 1 4 in it NOTE If oil remaining in the compressor reaches the equalized oil level oil will come pouring out when the tube with flare nut is removed 7 Prepare to disconnect the 2
28. is cut Check 1 Check the outdoor unit quantity setting again Sneek me outdoor uni rn comia Correction 1 Correct the incorrect outdoor unit quantity setting Sre G Repa io or nl mato congo Exampe AAA Notes Recovery from this alarm occurs automatically when the set outdoor unit quantity matches the number of outdoor units detected on the outdoor unit main sub control wiring E29 Alarm O AAA Outdoor unit failed to receive communication from outdoor unit main Alarm conditions Outdoor unit communications from outdoor unit main were interrupted for 3 minutes or longer Probable cause 1 After initial communications were completed the outdoor unit main sub control wiring was cut 2 After initial communications were completed the RC connector became disconnected 3 The power at the outdoor unit main unit is turned OFF 1 Check the outdoor unit main sub control wiring 2 Check the RC connectors 3 Check the power at the outdoor unit main 3 2 3 Check Correction Repair the outdoor unit main sub control wiring ME Correct the RC connector connection Turn ON the outdoor unit main power Exampe J o SOS Notes f 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis F04 F05 F22 Alarm sensor trouble Compressor 3 discharge temperature sensor trouble Alarm conditions 1 Discharge temp of 100 C or higher was detected 20 minutes or m
29. is stopped The operating current of the constant speed compressors is always higher than 1 5 A Therefore this alarm occurs as the result of an open circuit or failure E 3 WAY ECO i SYSTEM 15 Low Oil Alarm Control Functions Ordinary operation is resumed after system oil recovery control is completed If a stop occurs again as a result of a low oil level this alarm occurs This alarm will not occur if system oil recovery control has not already been performed However the alarm may not occur if the outdoor unit where the system oil recovery conditions were met is not the same as the outdoor unit which stopped due to low oil level In this case system oil recovery control may be performed again Alarm display H07 x 3 WAY ECO i SYSTEM 16 Pressure Sensor Failure Control Functions This system contains 2 types of pressure sensors a high pressure sensor and a low pressure sensor 1 High pressure sensor failure Identification of a failure caused by a loose or displaced connector is based on the relationship between the pres sure detected by the high pressure sensor and the operation of the high pressure switch and on the relationship between the temperature detected by the high pressure sensor and the various temperature thermistors However when the pressure increases suddenly the judgment for the high pressure sensor failure alarm may occur before operation of the high pressure switch Therefore before concluding that there
30. it is necessary to reset the power on the control PCB of the outdoor unit where the outdoor unit No setting S007 on the control PCB is set to No 1 main unit CAUTION If the power is not reset on the control PCB of the No 1 outdoor unit main unit backup mode operation will continue after the repairs are completed Backup operation is intended as emergency operation until repairs are made Have repairs made as soon as possible 4 2 Manual Backup This backup operation is the conventional method of backup operation It involves disconnecting the failed outdoor unit from the system and operating only the normal outdoor units 4 2 1 Backup operation by disconnecting the outdoor unit 1 Changing the outdoor unit control PCB settings lt lf the failed outdoor unit is not the No 1 unit gt e Settings at No 1 unit main unit Switch on outdoor unit control PCB Action System address S003 S002 No change No of indoor units S005 S004 No change No of outdoor units S006 Subtract the number of failed units from the current setting Outdoor unit No S007 No change e Settings at normal outdoor units other than the No 1 unit No particular changes e Settings at the failed outdoor unit No particular changes However close all service valves suction tube discharge tube liquid tube balance tube at the failed outdoor unit and disconnect the wiring between the outdoor units f 3 WAY ECO i SYSTEM 4 Backup Operatio
31. liquid back up E Liquid refrigerant SC 0 Gas refrigerant returns to the accumulator E Refrigerant on the outer side evaporates E cooling the liquid refrigerant on the inner side Liquid refrigerant Electronic control valve 4 large SC expansion valve controls the flow 2 Operation when discharge temperature is high When the discharge temperature increases the SC circuit electronic control valve opens to 480 pulses This intentionally causes a mild liquid back up cooling the compressor This operation takes priority over operation intended to increase SC It is performed at top priority in all operating modes 4 Liquid refrigerant Liquid refrigerant returns gt lt to the accumulator ome Does not fully evaporate i resulting in liquid back up Liquid refrigerant Electronic control valve 4 opens to 480 pulses 3 WAY ECO i SYSTEM 8 Outdoor Fan Control Control Functions 8 1 Fan mode These outdoor units utilize a DC fan motor that can be controlled in a maximum of 16 steps 16 modes However fan modes 15 and 16 can only be used if high static pressure mode has been set For information concerning EEPROM settings refer to the field application functions 8 2 Outdoor Fan Min Fan Mode and Max Fan Mode Min fan mode Gadlinerongtation Outdoor air temp gt 15 C 1 14 g oP Outdoor air temp lt 15 C 0 Heating operation Even if the fan mode is 0 during
32. mode of the indoor unit that starts first takes priority The first indoor unit to operate can select any operating mode When any mode other than fan mode is selected then the operating modes that cannot be selected are not displayed on all remote controllers that are subsequently operated Operation change control in progress is displayed indicating that there are restrictions on the operating modes that can be selected Controlling the operating 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 operation will not be possible When the priority remote controller is set to the operating mode for control then all other remote controllers can select only the permitted operating mode regardless of whether the priority remote controller is operating or stopped When a controlled remote controller is operated Operation change control in progress is displayed Set mode at priority remote controller Modes that can be selected at other remote controllers Cooling or dry Cooling dry fan Fan Whichever mode heating cooling is selected first There are other methods to avoid cont
33. of the accumulator of the stopped outdoor unit e After an outdoor unit stops there is the sound of refrigerant flowing into an outdoor unit that was stopped for a long time e When an outdoor unit starts after being stopped for a long time the start is accompanied by much vibration e Representative parts include the liquid capillaries secondary side of capillaries will be cool during cooling operation mechanical valve mechanical valve bypass check valve sound of refrigerant flow can be heard and stops when the liquid valve is closed hot gas defrost valve if valve secondary side remains hot even after much time has passed be careful not to mistake transmitted heat for a valve failure e Ice is growing on the lower parts of some outdoor unit heat exchangers but not on others yy Because this trouble may occur even in outdoor units with a high operating rate under conditions of insufficient gas caution is needed 6 Sensor failure Check e This alarm is likely to occur when wiring is partially cut It is difficult to identify even when continuity is checked The detected discharge temperature is high e Although such conditions rarely occur a P02 alarm is likely if the detected discharge temperature is low e Replace the sensor with another discharge sensor and compare the temperature conditions 7 If the cause is still unknown after checking the above then it is possible that electrical noise is the cause of the trouble
34. or Heating mode all outdoor unit heat exchangers are used if even one of the compressors in that outdoor unit is operating e During mixed heating cooling operation the number of heat exchangers used varies according to the conditions of the indoor units However heat exchanger 1 at the outdoor unit which contains the inverter compressor with the lowest amount of operating time is always used e SH control controls the difference between the liquid temperature and gas temperature to 1 5 C e During heating mode SH operation refrigerant may not flow to the heat exchanger 1 19 7 Outdoor Unit Electronic Control Valves 3 WAY ECO i SYSTEM MOV1 MOV2 MOV3 MOV4 Control Functions 7 4 SC Circuit Electronic Control Valve MOV4 1 Operation to increase SC During cooling operation or mixed heating cooling operation when the outdoor unit heat exchanger is functioning as a condenser the liquid refrigerant which condenses at the outdoor unit heat exchanger flows into the receiver tank and SC sub cool supercooling approaches 0 C When SC is small and the length of the tubing connecting the indoor and outdoor units is long the pressure loss increases possibly resulting in lower capacities Therefore MOV4 operates at the double tube near the discharge port of the outdoor unit in order to increase SC MOV4 uses the receiver tank detection sensor and low pressure sensor located near the accumulator to perform control in order to prevent
35. other connector may not cause the units to stop Therefore be sure to pull out the SCT connector only It is not necessary to recover the refrigerant from the balance tube Therefore do not operate the balance tube valve Turn off power to all equipment in the system Then pull out the RC1 connector 4P BLU CN106 on the outdoor control PCB in the outdoor unit for which pump down has been completed By pulling out the RC1 connector communication between the main and the sub outdoor units will be isolated Change the setting of controllable outdoor unit numbers reduce by 1 unit If the setting is incorrect the E30 alarm outdoor unit serial communication signal error occurs and the unit will not operate Turn on power for all equipment in the system and let the remaining outdoor units run in Cooling mode Repeat steps 1 through 7 and complete pump down for all outdoor units Q Using hoses with Schrader type push to release valves connect the manifold gauge valves to the suction line service port the discharge line service port and the liquid line service port in the next outdoor unit to undergo pump down Fig 9 Remaining refrigerant in the system may cause internal pressure Check that each Ar valve on the manifold gauge is tightly closed A Schrader type push to release valve is provided for each connection port Use hoses to connect the manifold gauge valves refrigerant recovery unit and refrigerant
36. outdoor liquid temperature drops to 7 C or below 8 5 Snow Removal Control 1 When the outdoor air temperature is 10 C or below the fan operates for 30 seconds every 2 hours in fan mode 8 even when the outdoor unit is stopped or the heat exchanger is not in use This control is intended to prevent snow from accumulating on stopped fans Because the outdoor air temperature cannot be accurately detected when the unit is stopped a higher outdoor air temperature is used for the control condition in order to ensure correct operation 2 If the fan mode becomes 0 during cooling operation the fan mode is changed to 1 This control is predictive control Use a snowfall sensor as necessary according to the installation conditions 8 6 When the Compressor Magnet Switch Seizing Alarm Occurs Because there is the possibility that the high pressure has increased the fan operates in Max fan mode 8 7 Other This unit includes settings for high static pressure and for Quiet mode For information about these settings refer to the field application functions 3 WAY ECO i SYSTEM 9 Demand Control Control Functions Serial parallel l O must be connected in order to perform demand control The below input is received by serial parallel I O and demand control is performed The demand values can be set as needed with this device For more information refer to the field application functions Demand setting X EA 3 R MAA A xXx O
37. outdoor unit 5 A valve ORVR BALV BPB in the oil circuit has malfunctioned or there is clogging of the circuit capillaries which returns oil from the oil separator to the compressor 6 If an excessive amount or liquid returns to the compressor oil foaming may increase oil discharge The same occurs when the refrigerant proportion in the compressor is high at start due to an open circuit in the crank case heater Check the tubing length and height differences Check the operation of system circuit valves Check that there is not an excessive amount of liquid return Check that there is no mechanical valve leakage Check the crank case heater wintertime Check that the oil sensor is not disconnected and that the circuit is not open If insufficient oil is a possibility then charge with additional oil If it is clear that a valve failure has occurred replace the valve H08 H27 H28 Alarm Alarm meaning Trouble open circuit with the oil sensor connection at compressor 1 compressor 2 or compressor 3 Alarm conditions This alarm occurs when a connector connection pins 1 and 2 for compressor 1 pins 4 o and 5 for compressor 2 and pins 7 and 8 for compressor 3 is open 2 Correct the connection at connector pins 4 and 5 Example Je O Notes D O 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis H31 Alarm a wee HIC trouble alarm Alarm conditions This alarm occurs when the microco
38. recovery cylinder Quickly connect each part to prevent air from entering the tubing Recover remaining refrigerant from the inter unit tubing and indoor units using the refrigerant recovery unit To determine the completion of refrigerant recovery follow the instructions that came with the refrigerant recovery unit n E 3 WAY ECO i SYSTEM 5 Recovering Refrigerant Outdoor Unit Repair Procedures Discharge tube service port For 7 94mm dia connector Liquid tube service port For 7 94mm dia connector Manifold gauge Lo o 0 Hi IT a La LL a oe es Refrigerant MN a O QU SN A recover unit 2 N WI EAN Refrigerant Sii l recovery cylinder uction tube service port For 7 94mm dia connector Fig 9 5 3 Recovery of Refrigerant from Entire System 1 Turn off power to the entire outdoor system 2 Short circuit the AP Air Purge pins CN102 on the outdoor control PCB of all outdoor units then supply power to the outdoor units By short circuiting the AP pins and supplying power to the outdoor units the solenoid valve in each unit is forcibly opened and all remaining refrigerant can be recovered 3 If any unit has encountered a power failure follow the instructions in 5 1 Refrigerant Recovery Procedures from Outdoor Units and perform refrigerant recovery for the faulty outdoor unit 4 Connect the manifold gauge to the high and low pressure ou
39. running and stopped e Use the following check procedure to display the sensor temperatures from the remote controller indoor unit and outdoor unit sensors on the remote controller display lt Check procedure gt Press and hold the CHECK button and button simultaneously for 4 seconds or longer The following appears on the remote controller LCD display unit No X X main unit No item code XX sensor address and service monitor 00XX sensor temperature See figure at right Press the temperature setting a and y buttons to change the item code to the sensor address of the sensor you wish to monitor For the relationship between the sensor address and sensor type refer to the sensor temperature relationship table on next page If group control is in effect press the CUNIT button to change to the unit you wish to monitor Press the CHECK button to return to normal remote controller operation lt Note gt The temperature display for units that are not connected appears as e f monitor mode is engaged during ordinary operation the only parts of the LCD display that change are those shown in in the figure The other parts remain unchanged during normal operation 3 noX m SET DATA D La CODE No lt Unit No Hl Item code sensor address HG XX Discharge temp TD Ae i 3 WAY ECO i SYSTEM 3 Remote Co
40. sign ON times for each model Ga ss FiltersignONtime ss FiltersignONtime time High High Super since Longe life performance performance Model long life gt F Pressure data differential 5 2 J eLo las Flas A y E D ar sel switch S S E SSF E ISS E SS SE SS A a Pi a a a a 0000 ee Air pee 000 ee Concealed A 4 ey Air er z J 1250 2 Way Air E 2500 10000 Semi Concealed S 1 a Air Discharge 0005 Concealed Duct U US Duct U US Concealed Duct 0007 Ceiling Mounted T Mounted T x PO 1250 0008 Wall Mounted K a Floor PERE 150 75 0011 Concealed Floor PERE FM EY EENEN hour e X indicates that there is no corresponding filter indicates the filter sign ON time that is set at shipment e High fouling Set when HH is selected for the degree of filter fouling item code H a z x 3 WAY ECO i SYSTEM 2 Detailed Settings Function Remote Controller Functions CCE nm A ert Set when using a central control device Central control address Used when setting the central control address manually from the remote controller o a O Operating mode priority change Note 1 1 Explanation of operation mode priority change Enabled only in 2WAY MULTI heat pump models lt Function gt With indoor units that are installed in combination with an outdoor unit model where either heating or cooling operation can be selected the operating
41. with the thermostat forced ON lt Procedure gt Press and hold the button for 4 seconds or longer Test appears on the remote controller LCD display Fig 3 Start operation PROGRAM Press the button to return to normal remote CoP controller display 9 a e RCS TM80BG Fig 3 3 WAY ECO i SYSTEM 3 Remote Controller Servicing Functions Remote Controller Functions E Sensor Temperature Display Function displayed regardless of whether unit is operating or stopped The procedure below displays the sensor temperatures from the remote controller indoor unit and outdoor unit on the remote controller lt Procedure gt Press and hold the and buttons simultaneously for 4 seconds or longer The unit No X X main unit No item code XX sensor address and servicing monitor HH XX sensor temperature are displayed on the remote controller LCD display See Fig 4 at right Press the temperature setting Ca w buttons and select the item code to the address of the sensor to monitor For the relationships between the sensor addresses and sensor types refer to the table of temperature sensors and addresses on the next page If group control is in effect press the CUNIT button to select the unit to monitor Press the temperature setting buttons to select the item
42. 0 the compressor stops after 120 seconds If this compressor repeats this operation 3 times and the oil level does not reach 2 system refrigerant oil recovery control is started When the compressor has stopped because the oil level is 0 a count is added to the alarm counter The counter for this compressor is not cleared unless the oil level for that compressor reaches 2 or else alarm output occurs 1 11 3 WAY ECO i SYSTEM 4 Special Controls Control Functions 4 2 3 Flow of system refrigerant oil recovery control 1 Simplified flow of system refrigerant oil recovery control System refrigerant oil recovery control follows this flow Normal operation 3 minute stop May stop for 6 minutes System refrigerant oil recovery control Max 3 minutes gt 3 minute stop Normal operation 2 Cooling cycle Control time Maximum 3 minutes Stops once before and once after control Outdoor units All outdoor units operate at maximum horsepower Electronic control valve Valves at all indoor units operate at a fixed pulse according to the indoor unit capacity Indoor RAP valve kit Valve kits at all indoor units operate in Cooling mode OFF status units Fan Fan operates at the set fan speed stops or operates at L speed depending on the indoor unit operation mode 3 Heating cycle Control time Maximum 3 minutes Stops once before and once after control Outdoor units All outdoor units operate at maximum
43. 18 Connecting the refrigerant recovery cylinder is done to prevent pressure from rising excessively during backup operation by recovering the refrigerant from the outdoor unit to be repaired Measure the weight of the refrigerant and cylinder itself beforehand and provide sufficient safety measures such as installing a high pressure cutout in the circuit The hoses may be subject to internal pressure from the refrigerant inside the A outdoor unit Check that the manifold gauge valves are fully closed beforehand A Schrader type push to release valve is provided at each connection port 3 Connect the outdoor unit maintenance remote controller to the RC connector CN006 3P BLU on the outdoor unit control PCB of the outdoor unit to be repaired Then start a test run of all units Press and hold the CHECK button for 4 seconds 4 Press the MODE button and change to heating operation Even if the mode that is originally displayed is Heat be sure to press the MODE button once or more to change to heating operation Pressing the MODE button ensures that heating cooling operation is not mixed and that all units are operating in either Heating or Cooling mode 5 Use the outdoor unit maintenance remote controller to check the operating status of the indoor units Check that all units are operating in Heating mode For details concerning operation of the outdoor unit maintenance remote controller refer to the Out
44. 5 Place the remaining cushioning rubber onto the new compressor at the position shown in the figure below Remove the bolts that are temporarily fastening the pieces of cushioning rubber inner 2 legs and anchor the 3 compressor legs using the bolts washers and rubber washers S Remove the flare nut from the new compressor and connect the tube with flare nut 8 Shape the tubes and insert them at the 2 brazing locations 9 Connect a manifold gauge to the high and low pressure outlet ports at the outdoor unit where the compres sor was replaced Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement 10 Perform copper brazing at the 2 brazing locations 11 Follow the instructions in 6 Checking for Leakage After Repair and check for leaks at the outdoor unit where the compressor was replaced Ne At this time also check for leaks at the flare nut connection on the tube with flare nut 12 Re install all components that were removed Re install the electrical component box in the same position as it was before Be sure to check for looseness of the power terminal connection at the compressor Ne terminal plate and to check by pulling vertically on the connections If the termi nals become disconnected easily replace the wiring Assy 13 Follow the instructions in 7 Evacuating System and apply vacuum to the outdoor unit where the compres sor was replaced Tube with flare
45. 5DZH8 C1405DZH8 Capacity 0705 0905 1155 1305 1405 ae pressor compressor 2 Soron Shp 6hp 65hp Shp 6hp compressor Compressor 2 Scroll 5 hp 6 hp 6 5 hp 5 hp 6 hp Compressor 3 Soroll 5h 6m For both 50 Hz and 60 Hz hp horsepower Constant Constant Constant speed INV speed INV speed A Al Compressor 3 Compressor 2 Compressor 1 Compressor 2 Compressor 1 Types 0705 0905 1155 Types 1305 1405 3 2 Compressor Selection Rules Because all outdoor units in this system contain an inverter compressor ordinarily there is no absolute order of priority for compressor operation 1 Normal compressor operation sequence set at time of shipment At least one inverter compressor is always operating in order to make fine adjustments to the system lower limit capacity When multiple outdoor units are connected each unit contains an inverter compressor Therefore the inverter which operates is the inverter with the shortest amount of operating time After the first inverter compressor has started the remaining inverter compressors and constant speed compressors start operating in order of the compressors which have the shortest amount of operating time Immediately after installation all compressors have an operating time of zero In this case the compressors start in the following sequence Inverter compressor gt Constant speed compressor 1 gt Constant speed compressor 2 lt Details gt T
46. AY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis H07 Alarm Alarm code H07 Alarm meaning No oil alarm Alarm conditions This alarm occurs when oil does not flow for a specified amount of time in tubing where oil flow constantly The presence of oil is detected by a temperature sensor Judgment method Tcal calculated by the formula below from the oil temperature is compared with the discharge temperature If Tcal is higher than the discharge temperature then oil is judged to be present If Tcal is lower than the discharge temperature oil is judged to be not present Tcal 0 0254 T_oil LP 0 0298 T_oil LP 0 8842 T_oil 2 9953 LP 11 091 LP 436 94 2 9953 HP 11 091 HP 436 94 0 0254 HP 0 0298 HP 0 8842 These points are calculated from the oil temperature and compared with the discharge temperature High pressure Lower than the disc q temperature No oil Discharge temperature Higher than the discharge temperature Oil present Low pressure Oil temperature Probable cause Insufficient amount of oil in the system 1 The length of system tubing exceeds the allowable tubing length 2 The difference in height between system units exceeds the allowable value 3 A large amount of oil was drained when a compressor was replaced 4 Oil has accumulated in a stopped outdoor unit and has not returned as a result of refrigerant circuit clogging or valve leakage at the stopped
47. At all outdoor units where dry cores were removed pressurize with 3 3 MPa of nitrogen from the liquid tube service port and check for leaks 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 16 After evacuating all nitrogen gas from the tubing apply vacuum to all outdoor units where dry cores were removed until the pressure is 101kPa 5 Torr or less 17 INSTALLATION Refer to the Information for the Person in Charge of Installation items Charge with an amount of refrigerant equal to the amount that was recovered B If a ball valve is not installed on the outdoor unit 1 Refer to Refrigerant recovery procedures 2 for indoor unit with no ball valve under 5 2 Refrigerant Recovery Procedures Indoor Unit Perform pump down of the refrigerant from all indoor units and inter unit tubing to the outdoor unit side 2 Cut the liquid narrow tube at all outdoor units where dry cores will be attached then attach the dry cores and ball valves as shown in Fig 19 3 For the next steps refer to 6 17 in A on the previous page Cleaning dry core Liquid tube service valve Outdoor unit Normal unit eo a IA Balance tube Dry core Bidirectional type for R410A ed Si a Liquid tube Discharge tube Fig 19 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 10 3 Removing and Installing Compressors When removing and
48. Bolt Washer 1 Rubber washer 1 1 each used for 3 locations 12 Connect the manifold gauge to the high and low pressure outlet ports at the outdoor unit where the compressor was replaced OS SS WG S Connect the manifold gauge to a nitrogen e aD Gushion ribber li f A a Y remained 1 location cylinder and perform nitrogen gas replace Ponlo y ment Protect the oil equalizer tube Capillary tube assembly connection parts 13 Perform copper brazing at the 4 brazing locations Fig 31 Ara In the same way as during removal pay particular attention to protection of the check valve shown in the figure An O ring is mounted inside the oil equalizer tube connector parts It must be protected and do not lose it 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 14 Re install all components that were removed Re install the electrical component box in the same position as it was before Nara e Be sure to securely re install the thermal insulation and clamps for the capillary tube assembly in their original conditions as shown in Fig 28 e Be sure to check for looseness of the power terminal connection at the compres sor terminal plate and to check by pulling vertically on the connections If the terminals become disconnected easily replace the wiring Assy 15 Follow the instructions in 7 Evacuating System and apply vacuum to the outdoor unit where the compres sor was replaced D Re
49. E E C Cooling Thermostat ON E E E Thermostat OFF S E S Heating Thermostat ON C gt E E E gt C Thermostat OFF C gt E E E gt C Auto Auto Cooling Thermostat ON E E E Thermostat OFF S E S Auto Heating Thermostat ON C gt E E E gt C Thermostat OFF C gt E E E gt C Time 1 min Max 12 min 1 min Types D and GU perform E C for 3 minutes after defrost ends Therefore the thermostat remains OFF for 3 minutes k Function when a common use solenoid valve kit is used and there are more than one 1 indoor unit in the cooling mode within the same solenoid valve kit 2 Function when a common use solenoid valve kit is used and here are more than one 1 indoor unit in the heating mode within the same solenoid valve kit 1 13 3 WAY ECO i SYSTEM 4 Special Controls Control Functions 4 3 6 Outdoor unit cycle defrost Outdoor unit cycle defrost is performed in systems where 2 or more outdoor units are connected to the refrigerant system 1 Description of outdoor unit cycle defrost With this defrost method when 1 outdoor unit operates in defrost mode heat exchanger operating as a condenser another outdoor unit operates as an evaporator in the same way as in ordinary heating mode In this way the other outdoor unit is heating the unit where defrost is occurring When 1 outdoor unit completes defrost the other outdoor unit performs defrost in the same way Because the amount of time that the unit operates as an evapora
50. MANA is displayed blinking The display shows the set outdoor unit address System XX YY System XX System address YY Address at outdoor unit sub bus item code number DN value in the table below and the setting data 8 digits The setting data is displayed in 8 digits The display changes between the first 4 digits Fig and the last 4 digits Fig When the first 4 digits are displayed the bottom dot of the colon is lit To end the setting mode press the CHECK button The display returns to the normal display mode O Display of first 4 digits Display of last 4 digits o AS ma 5 F Ge Y 1 g lt Refrigerant type gt and are displayed alternately Example shows 0000 0410 R410A List of Item Codes DN Parameter Description Outdoor unit capacity a aa a eb 70 Type 280 90 Type 355 115 Type 400 130 Type 3 WAY ECO i SYSTEM Remote Controller Functions 4 REMOTE CONTROLLER FUNCTIONS 1 Simple Settings Function 250206 cc00i sweet e eee dew eee Raa ee 4 2 2 Detailed Settings FUNCION ie Ce eee eee ek 4 4 3 Remote Controller Servicing Functions 20 cece e eee eee eee 4 15 1 Simple Settings Function This allows the filter lifetime operating mode priority change
51. Notes L11 Alarm Alarm code Alarm meaning Alarm conditions Probable cause Correction This alarm occurs because the capacity has not been set Connect the outdoor unit maintenance remote controller On the outdoor unit EEPROM detailed setting mode screen check the value for the outdoor unit capacity item code 81 Check that it is not set to 0 or to a capacity that is not allowed If item code 81 is incorrect use the outdoor unit maintenance remote controller and set it correctly After changing the setting be sure to reset both the indoor and outdoor power The outdoor unit maintenance remote controller is required in order to set the capacity in the outdoor unit EEPROM Installation or connection failure in a common use solenoid valve kit miswiring of indoor unit s remote control group 1 The connection system with the multiple indoor units at only one solenoid valve kit and installation failure of common use solenoid valve kit L11 alarm occurs in the same series of all remote controllers 2 The connection system with the multiple indoor units at only one solenoid valve kit and wire connection that is not allowed L11 alarm occurs at the only target indoor unit 3 Remote control group wiring with a different refrigerant circuit s indoor unit L11 alarm occurs at the only target indoor unit 1 Installation failure of common use solenoid valve kit setting from PC at test run operation a
52. Operatesatupto70 of rated curret Oo O Shutdownstae S o gt O O Input present x Input not present The rated current indicates the current value that is listed in the catalog or similar material If the capacity of this device is insufficient the inverter compressor raises its operating frequency in order to maintain capacity For this reason it is capable of operating at a current which exceeds the rated current up to approximately 130 10 Indoor Unit Control of the Electronic Control Valve 10 1 Normal Control 1 Except Types D and GU 3 WAY ECO i SYSTEM Control Functions Position of electronic control valve ce Mode Outdoor unit operation eat unit Cooling Thermostat ON Performs SH control in the range of 55 480 pulses 1 Thermostat OFF 20 pulses 20 pulses Heating Thermostat ON Performs SC control in the range of 55 480 pulses 2 E Thermostat OFF Returns the liquid refrigerant gradually into the outdoor 85 pulses unit in the range of 55 80 pulses Auto Auto Cooling Thermostat ON Performs SH control in the range of 55 480 pulses 1 20 pulses Thermostat OFF 20 pulses 20 pulses Auto Heating Thermostat ON Performs SC control in the range of 55 480 pulses 2 85 pulses i Thermostat OFF Returns the liquid refrigerant gradually into the outdoor 85 pulses unit in the range of 55 80 pulse
53. Probable cause 1 Magnet SW malfunction e The magnet SW has seized and the compressor is continuing to run gt Even when the power is turned OFF the primary side and secondary side contacts remain together e The conditions of magnet SW operation are poor difficult to open gt When a magnet SW is used in a DC circuit it may be difficult for the SW to open at times In an AC circuit the magnet SW should open instantaneously as long as the current is within the allowable range However this kind of trouble can occur if excessive current flows and may prevent the SW from opening 2 CT circuit failure or PCB failure A D failure e CT circuit contact failure gt Check that the connector is not partially disconnected Wiggle the connector to check the connection These symptoms will not occur if the connector is completely disconnected or the wire is cut In these cases alarm Hx3 occurs e Current of 7A or higher was detected although the compressor was stopped or a higher current was detected at occasional intervals e The compressor continues to operate at a time when the outdoor unit should be stopped such as when all indoor units are stopped gt Check whether or not 200 V is output from the PCB to the magnet SW If the voltage is output there is a PCB failure 3 Installation error e CT1 connector is connected to the compressor 2 side e CT1 circuit is connected to the compressor 2 side e CT2 connector is connected to the compres
54. ROCEDURES de Removing Panels nase in seers Bee ce ata tat i es A RAS WAS EY eine 2 2 2 Removing Electrical Component Box and Duct 02 0c eee eee eee 2 3 3 Discharging Compressor Oil 000 0c 2 5 4 Backup Operation crisis aroraa na Oi ee eee ied eee eee eee te eee ba oh 2 6 5 Recovering Refrigerant 2 2202 c cece cece neces 2 9 6 Checking for Leakage After Repair 0 00 e eee eee eee eee 2 14 7 Evacuating System tarta tada cds 2 15 8 Charging Compressor Ol icc oe ete e a 2 16 9 Pumping Out Refrigerant from Outdoor Unit ooooocoocnnoooomm 2 20 AO COMPIESSOP iria Kees ia aaa 2 23 11 High and Low Pressure Sensors 0 0c eee eee eee eee 2 38 12 Replacing 4 way valve ica a eke tela eee et 2 39 i 3 WAY ECO i SYSTEM 1 Removing Panels Outdoor Unit Repair Procedures Procedures 1 Removing Panels Removing Electrical Component Box and Duct Discharging Compressor Oil Backup Operation Recovering Refrigerant Checking for Leakage After Repair Evacuating System ON OaR OD Charging Compressor Oil 9 Pumping Out Refrigerant from Outdoor Unit when repairing parts other than compressor 10 Compressor 11 High and Low Pressure Sensors 12 Replacing 4 way valve 1 Front panel removal Fig 1 e Remove the front panel remove 11 screws 2 Power outlet panel amp valve cover removal Fig 2 e Remove the power outlet panel remove 2 screws e R
55. SPW SPW Concealed Duct US075XH US095XH PW SPW R164GXH56 A B UR184GXH56 A B 165XH U185XH SPW SPW SPW SPW SPW UR254GXH56 A B UR304SXH56B UR364GXH56 A B UR484GXH56 A B UR604GXH56B U255XH U305SXH U365XH U485XH U605XH 165XHN U185XHN U255XHN U305SXHT U365XHN U485XHN U605XHN R164SXH56B UR184SXH56B UR254SXH56B UR364SXH56B UR484SXH56B UR604SXH56B U255SXH U365SXH U485SXH U605SXH U255SXHT U365SXHT U485SXHT U605SXHT 165SXH U185SXH EECCECCO SP f S185XH PW 125XH S165XH PW DR124GXH56 A B 25XH PW R124GXH56 A B 25XH PW SPW SPW SPW DR164GXH56 A B TDR184GXH56 A B TDR254GXH56 A B TDR364GXH56 A B TDR484GXH56 A B T U Sl Ceiling Mounted T 165XH T185XH 255XH T365XH T485XH Sl KI SPW Wall Mounted KR74GXH56 A B K075XH PW R94GXH56 A B 095XH PW PW SPW R164GXH56 A B KR184GXH56 A B KR254GXH56 A B Az 0 30 co ccccccolco gt o wn lt n lt xx lt xuw Aan PW A PW L MR94GXH56 A B x PW p MR124GXH56 A B FMR164GXH56 A B FMR184GXH56 A B p p R R p MR254GXH56 A B p mu FM Concealed Floor Standing PMR74GXH56 A B o mM PW PW We RO4GXH56 A B FR124GXH56 A B 64GXH56 A B FR184GXH56 A B PW PW PW U055XH U075XH U105XH S F SPW F Floor Standing FR74GXH56 A B Total Heat Exchanger with DX coil Class 25 36 48 76 96 R254GXH56 A B oo nH Concealed Duct SPW
56. The connector is normal if all results pin 5 pin 1 pin 5 pin 3 pin 6 pin 2 pin 6 pin 4 are approximately 46 If the results are OQ or co replace the coil e MOV4 Measure the voltage between plug pin 5 and pins 1 through 4 at the CN230 connector 6P BLU 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 control valve connector The connector is normal if all results pin 5 pin 1 pin 5 pin 3 pin 6 pin 2 pin 6 pin 4 are approximately 46 If the results are OQ or co replace the coil 3 Crank case heater e Connecta clamp meter to 1 of the 2 crank case heater wires and measure the current The current is normal if the result is 0 15 A or higher As a guide the current should be 0 14 A 180 V 0 17 A 220 V 3 WAY ECO i SYSTEM 7 Test Pin Trouble Diagnosis When the test pin on the outdoor unit control PCB is short circuited each part can be operated individually e After turning OFF the main unit power short circuit the test pin CNO22 WHT then turn the power back ON Output is performed in the sequence shown in the table below for 0 5 seconds each Output Operation Outpt Operation Relay RY024 Supercooling valv
57. Y ECO i SYSTEM ip Discharging Compressor Oil Outdoor Unit Repair Procedures Discharged oil can be used for checking the condition of the system Based on the appearance and color of the discharged oil a judgment can be made on whether the system is operating normally or not 3 1 Discharging Oil from Oil Separator Recover the refrigerant from the outdoor unit following the procedure given in 5 Recovering Refrigerant Install hoses as indicated on the equipment and feed nitrogen gas gradually to provide pressure to the system from the low pressure outlet and collect oil in a pan or container Fig 6 e The low pressure outlet port is at the Lo side of the right side CAUTION e A faulty outdoor unit may remain pressurized The oil delivery port employs a Schrader type push to release valve Be careful to avoid accidental oil release when using the port Packless valve or the like E Container fi Oil delivery port E For 6 35mm dia connector f Manifold gauge Lo Hi SS Nitrogen gas Low pressure outlet port g For 7 94mm dia connector Fig 6 3 2 Discharging Oil in Compressor Recover the refrigerant in the outdoor unit following the procedures in 5 Recovering Refrigerant Remove the compressor and discharge the oil in it Refer to 10 Compressor for detailed procedures 3 3 Checking the Oil Acceptance rejection criteria for the oil Condition of Condition of oil Judgment crit
58. a B for control purposes During special control control of the compressor capacity according to Te is not performed wo If the thermostat turns OFF while Te is within area C the next time the compressor starts it may restart from a lower capacity 6 When the area changes to area C area C is considered to be area B for control purposes for the first 6 minutes even if the horsepower is the minimum value within the range where capacity control is possible operation with inverter frequency of 25 Hz only Subsequently if C area continues the thermostat turns OFF 3 WAY ECO i SYSTEM 3 Compressor Control Control Functions 3 6 2 Condensation Temperature Tc Control Control when there are indoor units operating in Heating mode PX 55 5 C Thermostat OFF Area D PX 0 1 Horsepower decrease Area C 1 1 3 451 0 51 0 s Horsepower increase prohibited Area B gt 48 0 48 0 47 9 Horsepower increase Area AB 47 0 permitted 46 9 Horsepower increase Area A permitted Depending on the maximum requirement level of the indoor unit the judgment temperatures 0 15 30 for each area may vary as shown in the figure Maximum requirement level L example 1 For indoor units which are operating in Heating mode if one unit is selected for a test run the air intake temperature difference is ignored however Tc control is performed according to the figure above in order to prevent excess
59. ackup C Compressor 3 backup e In order to perform simultaneous backup operation for 2 or more compressors use a combination of the switch settings shown above A f 3 WAY ECO i SYSTEM 18 Service Maintenance Functions Control Functions The outdoor unit EEPROM settings can be used for the following functions 18 1 Outdoor Unit Noise Countermeasure EEPROM 05 set at each outdoor unit This unit includes 3 types of Quiet modes However when they are engaged operation is in Quiet mode 24 hours a day Selecting a Quiet mode results in operation that gives priority to reducing noise Because these modes involve restrictions on outdoor unit fan modes and the operation frequency the capacity will be somewhat reduced Normal operation setting at time of 14 factory shipment 4 19 Noise reduced by approx 1 2 dB from Approx 0 5 hp the catalog value 2 41 Noise reduced by approx 2 3 dB from Approx 1 2 hp the catalog value 3 10 Noise reduced by approx 5 dB from the Approx 1 8 hp catalog value If Quiet mode is set the capacity will begin to decrease during heating operation at low outdoor temperatures when the outdoor air temperature is below standard conditions It is possible to set Quiet mode only for nighttime by using the snowfall sensor input terminal and a timer for quiet operation In this case operation is the Qui
60. al Ex SX Pala Ez AN Operating status of indoor unit 7 segment display Thermostat ON status of indoor unit 7 segment display 2 Pind en ima Unit Nos of connected outdoor units 7 segment display fi Operating status of outdoor unit compressor 7 segment display ne ni L En Ox a iB Compressor 1 operating time 0 99999999 hrs Compressor 2 operating time 0 99999999 hrs Compressor 3 operating time 0 99999999 hrs 7 Compressor 1 oil level O Empty 1 Insufficient 2 Sufficient Compressor 2 oil level O Empty 1 Insufficient 2 Sufficient Compressor 3 oil level O Empty 1 Insufficient 2 Sufficient E A Alarm history 3 Display only Alarm code and unit No of unit 3 Alarm history 4 where alarm occurred are displayed alternately 0 CCU Alarm history 5 1 4 Outdoor unit Alarm history 6 Alarm history 7 Alarm history 8 oldest La tt 1 iH I 15 5 1 1 us F4 F5 A E P 3 WAY ECO i SYSTEM 3 Ordinary Display Controls and Functions Outdoor Unit Maintenance Remote Controller Oe ERG Locations where and are displayed Displays the outdoor unit sub bus address which is as shown in Fig 3 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 Fig 3 lt Sample di
61. ampe A Notes _ A P05 Alarm Alarm code Alarm meaning Reverse phase or missing phase detected Alarm conditions This alarm occurs when a reverse phase or missing phase is detected in the R S T phases Probable cause Reverse phase or missing phase in the R S T phases Check Check the wiring at the power terminal plate Correction Switch the phases and reinsert Check if the result is OK Notes Example EEE 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis P16 Alarm Alarm code PIG Compressor 1 INV overcurrent alarm Alarm conditions This alarm occurs when current trouble or current detection trouble occur at an inverter frequency of less than 80 Hz after start when trouble judgment current is detected in the primary or secondary current or when an instantaneous secondary current of 48 A or higher is detected Probable cause There is a strong possibility of a compressor failure An alarm occurs for current detection trouble when it is judged that no current is flowing after start DCCT is damaged In this case the cause is a DCCT failure Check the power wiring and connector wiring Correction It is possible to resolve this trouble by limiting the maximum frequency Example AA o O P22 Alarm A P O OOOO Fan motor trouble Alarm conditions Fan motor start failure fan motor Hall IC input failure Probable cause Possible causes are a Hall IC input circuit failure and a fan HIC fai
62. ap Control 1 The below controls are performed according to the pressure sensor on the outdoor unit and the 2 temperature sensors attached to the indoor unit heat exchanger With roadmap control the pressure detected by the pressure sensor is converted to saturation temperature A temperature that has been converted to saturation temperature is called the pressure sensor temperature 2 These controls are performed every 30 seconds 3 The temperatures used to determine the area A AB B C for the evaporation temperature control shown in the figure on the next page and for condensation temperature control may vary depending on the relationships among factors including the difference between the room temperature setting and the indoor unit air intake temperature air intake temperature difference and the difference between the air discharge temperature setting and the air discharge temperature air discharge temperature difference 4 Definitions of evaporation temperature and condensation temperature Evaporation temperature Te Lowest heat exchanger temperature E1 E3 at any indoor unit Condensation temperature Tc Highest temperature among the outdoor unit pressure sensor temperature and the heat exchanger temperatures E1 at all indoor units where the heating thermostat is ON Ordinarily this is the outdoor unit pressure sensor temperature If multiple outdoor units are connected this is the highest outdoor unit pressur
63. as drained from the oil separator Remove the manifold gauge The connecting port employs a Schrader type push to release valve When caurion disconnecting the hose pressure will be applied from the refrigerant in the outdoor unit 11 Follow the instructions in 10 2 4 Dry core cleaning and perform dry core cleaning of the outdoor unit that failed 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 10 2 3 Replacing all compressors in a system 1 Follow the instructions in 3 Discharging Compressor Oil and drain the oil from the oil separators in all outdoor units Measure the amount of drained oil 2 Follow the instructions in 10 3 Removing and Installing Compressors and replace all compressors in the system 3 Follow the instructions in 6 Checking for Leakage After Repair and check for leaks at all outdoor units and in the tubing Follow the instructions in 7 Evacuating System and apply vacuum to all outdoor units and tubing G Fully close the high and low pressure gauge valves on the manifold gauge then stop the vacuum pump Disconnect the manifold gauge from vacuum pump Connect the manifold gauge to the refrigerant cylinder Be especially careful that air does not enter the tubing A Do not reuse the recovered refrigerant Use a refrigerant cylinder that contains unused refrigerant 7 Open the valve on the refrigerant cylinder and open the
64. between closing each of the 2 valves 3 Press the ON OFF button on the outdoor unit maintenance remote controller to stop the operation of all units If the outdoor unit maintenance remote controller is not available use the following method to stop the operation of all units Pull out the SCT connector 2P YEL CN231 from the outdoor unit control PCB of the unit where pump down is being performed When the SCT connector is pulled out alarm F12 sensor trouble immediately occurs and all outdoor units stop operating Be sure that you do NOT grasp the lead wire when pulling out the connector Removing any other connector may not cause the units to stop Therefore be sure to pull out only the SCT connector 4 Connect a refrigerant recovery device to the liquid tube service port Schrader type valve of all outdoor units where dry cores will be attached then recover the refrigerant from the tubing Be sure that no air enters the tubing at this time When the hose is connected internal pressure is applied by the remaining AN refrigerant in the inter unit tubing The connection port employs a Schrader type valve To determine when refrigerant recovery is compete follow the instructions in the instruction manual of the refrigerant recovery device 5 As shown in Fig 19 disconnect the tube that runs from the liquid tube valve to the ball valve on all outdoor units where dry cores will be attached Then attach the dry cores 6 At all
65. brazed locations shown in the figure Protect the sensors and the surrounding plates rubber lead wires clamps and other items Remove the discharge sensor shown in the figure 20 8 Disconnect the 2 brazed locations shown in the figure below 9 Pull the compressor toward you Ara When pulling the compressor toward you be careful not to cause any abnormal deformation of the tube with flare nut Remove the discharge sensor pe la 40 Inverter compressor a o AN AU A CEDS NBER Brazed locations 2 ili LS H 4 Bolt BAIT eal BL Washer 1 K da Alis ull Rubber washer 1 Tube with flare nut f PHR E LAY aa SAL HO 1p 5 Eb Oo 4 Bolt Washer 1 Rubber washer 1 a An wer 6 Es A 3 pe Bolt Washer 1 Rubber washer 1 Crankcase heater Front view Fig 20 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures HiInstallation 1 Remove the rubber stopper and tube cap brazed from the new compressor 1 2 Install the crankcase heater onto the new compressor 3 Place the 2 pieces of cushioning rubber in the designated positions on the compressor 4 Place the 2 pieces of cushioning rubber onto the legs of the new compressor deformation of the tube with flare nut Az When setting the compressor into the unit be careful not to cause any abnormal
66. cause Correction Exampe fm 1 Compressor failure locked or partially locked 2 CT circuit failure including cut wiring 3 Missing power phase 4 Low power voltage 5 PCB failure 1 Compressor failure partially locked Trouble Current value during operation greatly exceeds the value shown above Check When the current for each phase is measured with a clamp meter or similar instrument check that the current value for all phases is not high If MG was forced ON use caution check that compressor noise will not occur or the compressor will not run with a groaning sound 2 CT circuit failure PCB failure Trouble Check Check for poor connector contact e Check the continuity of the CT circuit e Install a normal CT in place of this CT and check If current is detected then the PCB can be judged OK gt CT circuit failure e Check that current is flowing in the phase where the CT circuit is connected Check voltage and current 3 Missing power phase Trouble This alarm primarily occurs when the T phase is missing When the R phase or S phase is missing CT trouble or PCB continuity trouble occur However this may not be true in the case of a missing phase caused by magnet SW trouble Check There is the possiblility of a magnet SW failure Therefore check the phase voltage at a location that is as close to the compressor as possible 4 Low power voltage Trouble In most cases this occurs when another constant speed co
67. cause High pressure sensor malfunction Failure to connect the connector to the outdoor unit PCB Failure to open the service valve Clogged tubing Valve leakage Over charging Outdoor unit PCB failure Electrical noise High pressure sensor failure e Check the sensor resistance value Use a tester and measure the resistance between sensor No 1 and No 3 Resistance of less than 10kQ indicates a short circuit or other trouble Resistance of 10kQ 200kQ is normal Resistance of more than 200kQ indicates an open circuit or other trouble e Connect a gauge to the high pressure outlet and check for changes in the value dispalyed by the monitoring software and for large deviation of the gauge pressure e During heating check whether the temperature is lower than the highest indoor unit E1 temperature The pressure detected by the high pressure sensor is the highest pressure in the system Therefore during heating the converted saturation temperature will never be lower than any indoor unit E1 temperature During cooling this temperature will never be lower than the outdoor unit liquid temperature 2 Failure to open the service valve clogged tubing valve leakage over charging In all of these cases an alarm occurs when there are rapid pressure fluctuations and tracking of the detected pressure is poor e Check the open closed status of the valve e Check for clogging of the tubing To check for clogging disconnect the high pressure senso
68. central control address and other settings to be made for an individual or group control indoor unit to which the remote controller used for simple settings is connected When simple settings mode is engaged operation stops at the individual or group control indoor unit to which the remote controller for simple settings is connected lt Procedure gt Press and hold the and ES buttons simultaneously for 4 seconds or longer ETB unit No or ALL in the case of group control item code 7 and settings data Hf XX are displayed blinking on the remote controller LCD display Fig 1 At this time the indoor unit fan or all indoor unit fans in the case of group control begins operating If group control is in effect press the button and select the address unit No of the indoor unit to set At this time the fan at the indoor unit begins operating If unit No AL is displayed the same setting will be made for all indoor units Press the temperature setting Ca EY buttons to select the item code to change Press the timer time A 5 buttons to select the desired setting data For item codes and setting data refer to the following page Press the button The display stops blinking and remains lit and setting is completed 7D Press the A button to return to normal remote controller display 3 WAY ECO i SYSTEM Remote Controll
69. compressors remain stopped Other OK compressors installed in the same outdoor unit operate as normal Even when 1 is set the outdoor unit will remain stopped if all of the compressors in the outdoor unit have failed If only 1 outdoor unit is installed the operation is according to setting 1 even if 0 is set 18 6 Snowfall Input Switching Outdoor EEPROM 4A set at each outdoor unit The snowfall sensor input terminal on the outdoor unit PCB is used for input from the snowfall sensor It is also possible to connect an external timer and use it to enable nighttime Quiet mode operation Csoma Operation Used for snowfall sensor input setting at time of factory shipment Used for Quiet mode input 18 7 Optional Solenoid Valve Control Operation Setting Outdoor EEPROM C0 set at each outdoor unit No output setting at time of factory shipment Refrigerant shut off valve control for cooling when the outdoor air temperature is below standard conditions AAA External liquid valve control used in special cases when the discharge gas temperature is likely to especially rise 18 8 High Static Pressure Mode Outdoor EEPROM 8F set at each outdoor unit This product can be made compatible with high static pressure by changing the settings By changing the setting item 8F to 6 this product can be made compatibly r 4 E 3 WAY ECO i SYSTEM 18 Service Maintenance Functions Control Function
70. cooling operation the fan mode may change to 1 at regular intervals for temperature protection of the inverter hybrid IC 8 3 Fixed Initial Fan Mode For the first 30 seconds after operation starts the mode is fixed at the initial mode which was calculated from the relationship between the outdoor air temperature and the outdoor unit horsepower If the outdoor unit horsepower changes dramatically the initial mode may be recalculated and may be again fixed for 30 seconds 8 4 Operation after Fixed Initial Fan Mode After the fixed initial fan mode the fan mode is increased or decreased according to the operating conditions 1 Cooling mode at all indoor units or else mixed heating cooling operation when the outdoor unit is functioning as a condenser A Fan mode is increased when the pressure sensor temperature is high and is decreased when the pressure sensor temperature is low The fan mode is always increased when the pressure sensor temperature is 50 C or higher B The fan mode may be decreased when symptoms of insufficient gas are detected at an indoor unit 2 Heating mode at all indoor units or else mixed heating cooling operation when the outdoor unit is functioning as an evaporator A If the condensation temperature is low the fan mode is increased at regular intervals B If the condensation temperature is high the fan mode is decreased in order to prevent excessive loads C The fan mode may be increased when the
71. d ld a pete eed abet et Page Satara 1 2 2 Selecting Outdoor Unit for Operation 0 0 0 cee 1 3 3 Compressor Control cocacola date wa Pad obs rab daa ane 1 4 4 Special Controls 4 srie eee Pekar eee Ro be ee Raa ea eb 1 11 5 A aed pods atioww ae eget weed VRE fd pt wan Yee a Ed os 1 16 6 Operation of Solenoid Valves 0 00 ccc tee eee 1 17 7 Outdoor Unit Electronic Control Valves MOV1 MOV2 MOV3 MOV4 1 19 8 Outdoor Fan Control kra sisri wei tek aeae teens 1 21 9 Demand Control sieaa aa A ete ie eae bea ise obs 1 22 10 Indoor Unit Control of the Electronic Control Valve 0 0000 eee 1 23 11 Solenoid Valve Kit Control 2 0 2 tte eee 1 25 12 Indoor Special Control n s sasaaa aeee 1 26 13 Discharge Temperature 0 0 0 tenes 1 27 14 Current Protection ogc ane eda vag end Se ee a wee ee Re be Ads 1 28 15 Low Oil Alan 2c chee oii aoe ane ea ea ce eee es Be 1 29 16 Pressure Sensor Failure 0000s 1 30 17 Backup Operation 0 00 0 cette eee 1 31 18 Service Maintenance Functions 000 cece tenes 1 33 19 Other FUNCIONS send brea a a eager dd 1 36 OUTDOOR UNIT REPAIR PROCEDURES 22000 ce eeeeeees 2 1 Te Removing FANS sect A Wh aE A AA Ie 2 2 2 Removing Electrical Component Box and Duct 0000 e eee eee ee 2 3 3 Discharging Compressor Oil 0000 cette eee 2 5 4 Backup Operation is ok ee Seen ee eee Sh we RE ee he AA
72. discharge discharge during heating operation can be changed The indoor unit PCB optional output for the fan can be switched Fan output switching according to the purpose of use EN Drain pump delayed start time He pump starts after the set time delay after cooling operation MENS Humidifier drain pump setting This specifies the humidifier and drain pump setting MON DC flap operation mode Changes flap operation to draft reduction mode MENS DC flap swing mode Selects the swing operation mode for the flap Sets the DC fan tap according to the purpose of use MON DC faritap setting Change the settings data at the same time Sets the humidifier output ON time for when the humidifier is operating Humidifier ON time ON OFF control is performed during humidifier operation This setting therefore sets the ON time per 60 second interval This setting enables a function that stops operation when the amount of time set for the OFF timer has passed after remote controller operation was started Stop at time set for OFF timer after operation starts This function prohibits changes from being made to the remote Timer function change prohibit controller time setting Smudging control Smudging control is disabled when 0000 is set ete z 3 WAY ECO i SYSTEM 3 Remote Controller Servicing Functions Remote Controller Functions The remote controller includes a number of servicing functions Use these as needed for test runs and inspecti
73. door unit maintenance remote controller item A With the 3 way valve it is difficult to determine whether operation is heating or cooling by touching the tubing 6 Close the suction tube and balance tube on the outdoor unit to be repaired Then slowly close the liquid tube service valve 7 When the low pressure at the outdoor unit to be repaired reaches 0 5 MPa or below press the ON OFF button on the outdoor unit maintenance remote controller to stop all the units Then immediately fully close the discharge tube valve on that outdoor unit While closing the valves the rise in discharge temperature or another factor may AN cause a protective device to activate stopping the operation of the outdoor unit If this occurs immediately fully close the discharge tube valve on the outdoor unit to be repaired 8 Connect the high pressure gauge side of the manifold gauge to the high pressure outlet port on the outdoor unit to be repaired and connect the manifold gauge to the refrigerant recovery device Be sure that no air enters the tubing at this time A 3 WAY ECO i SYSTEM 9 Pumping Out Refrigerant from Outdoor Unit Outdoor Unit Repair Procedures 9 Short circuit the vacuum application pin on the outdoor unit control PCB of the unit to be repaired Then turn ON the outdoor unit power When the vacuum application pin is short circuited and the power is turned ON all Ara solenoid valves in the outdoor unit are forced open a
74. e 1 SCV1 Relay RY012 Save valve SAVE 2 Relay RYO25 Supercooling valve 2 SCV2 12 Relay RY023 Pressure balance valve 2 PBV2 3 Relay RY021 Discharge valve 2 DCV2 13 Relay RY003 Crank case 2 CH2 R 5 R 5 Relay RYO0S Bypass valve BPV ______ 15 Relay RY019 Supercooling valve 3 SCV3 6 Relay RY007 Recovery valve ORVR 16 Relay AYo26_ Discharge valve 3 DCV3 8 Relay RY022 _ Pressure balance valve 1 PBV1 18 Relay RY004 Crank case 3 CHS 9 RelayRvo17 Refrigerant balance valve RBV 10 Relay RY016 Refrigerant adjustment valve RCV SANYO SANYO Electric Co Ltd 200812B DC Printed in Japan
75. e compressor several times If alarm P26 occurs every time and alarm P16 does not occur at all then the possibility of a compressor failure is low Check the power wiring and connector wiring Correction It is possible to resolve this trouble by limiting the maximum frequency Example CA o O 4 3 WAY ECO i Alarm Codes 3 WAY ECO i SYSTEM 5 Blinking Inspection Display Trouble Diagnosis P29 Alarm e e Alarm meaning Inverter compressor missing phase or lock alarm Alarm conditions This alarm may occur at start and occurs when missing phase or lock is detected and when a DCCT failure occurs Probable cause Generally this alarm occurs when the refrigerant pressure balance is uneven at start or when inverter compressor lock occurs there is a missing phase in the inverter compressor wiring or a DCCT failure occurs This can be judged to be starting trouble which is not caused by HIC DCCT failure replace PCB or compressor failure Sample JO E oe et sll Use a tester to measure the voltage between the DCCT output terminal on the rear of the PCB and the ground If the voltage is not within 2 3 V then the DCCT has malfunctioned CAUTION Currently the blinking inspection display can be displayed only on the wired remote controller and system remote controller Blinking inspection display 1 Automatic backup Alarm code Blinking inspection display Alarm meaning Automatic backup is in progress A C
76. e cooling capacity heat intake is high and the heating capacity heat discharge is low The outdoor heat exchanger capacity is increased increasing the system evaporation capacity and raising the evaporation temperature Te The amount of heat intake at the outdoor unit heat exchanger increases increasing the heat discharge at the Heating mode indoor units and raising the condensation temperature Tc e Primarily when both the evaporation temperature Te and condensation temperature Tc are high This occurs when the cooling capacity heat intake is low and the heating capacity heat discharge is high The outdoor heat exchanger capacity is decreased decreasing the system evaporation capacity and lowering the evaporation temperature Te The amount of heat intake at the outdoor unit heat exchanger decreases decreasing the heat discharge at the Heating mode indoor units and lowering the condensation temperature Tc Outdoor Heat Exchanger Control Table when the outdoor heat exchanger is functioning as an evaporator Low lt Evaporation Temp Te High Compressor stop 3 6 4 Protection control Protection control consists of 2 types of protection air discharge temperature protection and current protection The limit values from this protection control are incorporated into the output compressor capacity increase decrease values that were calculated from control based on the temperature at the indoor unit heat exchanger roadmap
77. e sensor temperature E3 temperature is not used for condensation temperature detection because it may indicate the temperature of superheated gas 3 WAY ECO i SYSTEM 3 Compressor Control Control Functions 3 6 1 Evaporation Temperature Te Control Control of Indoor Units Operating in Cooling Mode Cc Horsepower increase 11 1 permitted Area A 11 0 Horsepower increase permitted Area AB 6 1 6 0 Horsepower increase prohibited Area B 2 0 1 9 Horsepower decrease Area 0 15 30 Maximum requirement level L Depending on the maximum requirement level of the indoor unit the judgment temperatures for each area may vary as shown in the figure example 1 For indoor units that are operating in Cooling mode if one unit is selected for a test run then the air intake temperature difference difference between the room temperature setting and indoor unit air intake temperature is ignored and areas B and C are considered to be area A for control purposes This is used for additional charging test run checks etc For this reason vapor may be discharged if the test run continues for a long period of time however this does not indicate a problem In addition the test run is canceled automatically after 1 hour 2 3 4 5 Even within the same area the compressor capacity varies depending on the refrigerant temperature For 6 minutes after the compressors start area C is considered to be are
78. ed E25 Outdoor unit address setting failure duplication 5 11 E26 Mismatch in outdoor unit quantity 5 11 E29 Outdoor unit failed to receive communication from outdoor unit main 5 11 F04 5 12 FOS F22 F06 F07 Liquid temperature sensor trouble at outdoor heat exchanger 1 Out F08 F23 F24 Liquid temperature sensor trouble at outdoor heat exchanger 2 Out F25 F26 5 13 F31 Outdoor unit non volatile memory EEPROM trouble 5 17 H03 HO5 5 18 HO6 HO7 No oil alarm 5 20 HO8 Compressor 1 oil detection sensor connection trouble 5 20 5 18 H21 5 17 H22 5 17 H23 5 18 H25 5 18 H27 Compressor 2 oil detection sensor connection trouble 5 20 H28 Compressor 3 oil detection sensor connection trouble 5 20 H31 HIC trouble alarm Lo4 e 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis Reverse phase or missing phase detected Blinking Inspection Display on the remote CHECK blinking 1 controller CHECK blinking 2 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis E06 Alarm A Re Alarm meaning Outdoor unit failed to receive serial communication signals from indoor unit Alarm conditions Outdoor unit failed to receive serial communication signals from indoor unit Probable cause 1 The indoor unit power was cut OFF after initial communications were completed 2 An open circuit or short circuit occurred in the inter unit control wiring after initial communications were c
79. ed unit Amount of charge should equal that recovered by refrigerant recovery unit Ready for operation Power can independently be turned Modify power to permit turning off off for indoor unit where refrigerant is power to refrigerant recovered recovered indoor units independently Change controllable number of indoor units including changes in group control and integrated control settings Charge refrigerant in repaired unit x Amount of charge should equal that recovered by refrigerant recovery unit Replace or repair faulty unit Check for leakage in repaired unit x Evacuate air in repaired unit x Charge refrigerant in repaired unit x Amount of charge should equal that recovered by refrigerant recovery unit Change controllable number of indoor units including changes in group control and integrated control settings Open ball valve Ready for normal operation Open the ball valve Ready for normal operation Service work performed on indoor units is done simultaneously using the service ports at the liquid narrow tube side and the gas wide tube side ball valves Refer to each section in the Installation Instructions on refrigerant charging leak checking and evacuation procedures 5 2 1 Cooling operation for all units 1 If the remote controller RCS TM80BG is used for maintenance of the outdoor unit Connect the outdoor unit maintenance remote controller to the RC con
80. emove the valve cover remove 2 screws Power outlet panel Valve cover Fig 2 i 3 WAY ECO i SYSTEM 2 Removing Electrical Component Box and Duct Outdoor Unit Repair Procedures Be sure to turn off the power before removing the electrical component box Then check that the power LED D53 on the control PCB of the outdoor unit is not lit 1 Remove the electrical component box cover remove 6 screws Fig 3 2 Remove power and control wires from terminals 3 Remove internal wires with extended connectors on the outdoor control PCB Solenoid valves thermistors crankcase heaters and others 4 Disconnect power lines connected to the secondary terminals of the magnetic contactor for the compressor Electrical 5 Remove the electrical component box component pox remove 2 screws Fig 4 Fig 4 AN sa Be sure to release the locking mechanism before disconnecting each connector 6 Remove the center duct Fig 5 X The center duct is fitted into the upper and lower ducts and held in place by the electrical component box an arrangement that makes possible independent removal of the center duct i 3 WAY ECO i SYSTEM 2 Removing Electrical Component Box and Duct Outdoor Unit Repair Procedures 7 Remove the lower duct 2 screws 1 tab Fig 5 1 Lower duct 8 Remove the upper duct 3 screws Fig 5 2 e E x 3 WA
81. emporary mounting 2 locations at back side each 1 piece 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures Brazing locations 3 Bolt Washer 1 Rubber washer 1 1 each at the 3 locations Protect the oil equalizer tube connectors Cushioning SI gt rubber guide Front view Fig 26 Set the remaining cushioning rubber beneath the new compressor leg at the locations shown in the figure 26 Remove the bolts which are temporarily fastening the 2 pieces of cushioning rubber and anchor the 3 com pressor legs using the bolts washers and rubber washers S Insert the pre shaped tube assembly at the 3 brazing locations indicated Connect the manifold gauge to the high and low pressure outlet ports at the outdoor unit where the compres sor was replaced Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement O 10 Perform copper brazing at the 3 brazing locations In the same way as during removal pay particular attention to protection of the oil AE equalizing tube connector parts shown in the figure 26 An O ring is mounted inside the oil equalizer tube connector parts It must be pro tected and do not lose it 11 Follow the instructions in 6 Checking for Leakage After Repair and check for leaks at the outdoor unit where the compressor was replaced 12 Re install all components that were removed Re install the e
82. er controller controller controller controller controller Remote control group wiring with a different refrigerant circuit in the indoor unit 1 When setting installation of common use solenoid valve kit is made by PC check whether the installation change was made in the same series of all indoor units or not Check the software of address setting of PC In this case L11 alarm occurs at all indoor units remote controllers 2 Check the condition of remote control group wiring where L11 alarm occurs Check whether the group wiring is made with the indoor unit of a different solenoid valve kit or not Check whether the group wiring is made with the indoor unit of a different refrigerant circuit or not 3 Check the model of indoor unit connected to a remote control group where L11 alarm occurs Check whether types D and GU indoor units are connected in the group wiring or not Check the model of indoor unit with the item code 10 for the detailed setting of the remote control 1 Perform installation of common use solenoid valve kit from PC in the same series of all indoor units 2 With a common use solenoid valve kit change into the wiring that is allowed Example Notes This alarm may occasionally occur when connecting the common use solenoid valve kit 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis L17 Alarm Alarm condit
83. er Functions Remote Controller Functions Section RCS TM80BG Fig 1 1 Simple Settings Function List of Simp Item code le Setting Items Filter sign ON time fitlter life time Degree of filter fouling Central control address Operating mode priority change Fan speed when heating thermostat is OFF Heating intake temperature shift Electric heater installation Humidifying when heater thermostat is OFF Permit prohibit automatic heating cooling Cool only 3 WAY ECO i SYSTEM Remote Controller Functions Setting data Description Highly fouled Filter sign ON time is reduced to one half the set time Central control address 1 Central control address 2 Central control address 3 Central control address 64 No central control address set setting at time of shipping Compressor ON Compressor OFF MED 1 min LO 3 min 0006 Shifts intake temperature 6 C down 0000 0001 Heater installed 0000 No setting at time of shipping Prohibit 0000 0001 Cool only Set 1 for item code OD 0000 e In order to avoid water leakage and damage to the fan do not set for humidifying when the thermostat is OFF unless a vaporizing humidifier is used e Consider the device purpose and type when changing the settings Incorrect settings may result in malfunction Do not change any settin
84. er to prevent liquid back flow 9 Fully close the low pressure gauge valves on the manifold gauge follow the instructions in 8 Charging Compressor Oil and charge with oil if necessary 10 Remove the manifold gauge The connecting port employs a Schrader type push to release valve When caurion disconnecting the hose pressure will be applied from the refrigerant in the outdoor unit 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 10 2 2 Replacing all compressors in a failed unit 1 as 9 10 Follow the instructions in 3 Discharging Compressor Oil and drain the oil from the oil separator in the failed unit Measure the amount of drained oil If backup operation is required follow the instructions in 4 Backup Operation and engage backup operation Follow the instructions in 10 3 Removing and Installing Compressors and replace all compressors in the failed unit Fully close the high and low pressure gauge valves on the manifold gauge then stop the vacuum pump Disconnect the manifold gauge from the vacuum pump Connect the manifold gauge to the refrigerant cylinder At this time be careful that air does not enter the tubing Do not reuse the recovered refrigerant Use a refrigerant cylinder that contains new refrigerant Open the valve on the refrigerant cylinder and open the high pressure gauge valve on the manifold gauge with the low pressure
85. erant Adjust the amount of refrigerant Guide for over charging Be sure to connect the gauge to the high pressure outlet when checking for over charging During cooling The following does not apply when outdoor air temperature is low or when fan speed is controlled When both compressor 1 and compressor 2 are operating and the fan mode is 14 maximum fan speed then the high pressure saturation temperature should be approximately 15 C above the outdoor air temperature If it is 5 C or more above this level then it is possible that over charging may have occurred During heating There is an indoor unit where refrigerant flow is poor E1 temperature and discharge temperature are low and the mechanical valve of that unit is opened to 300 pulses or more and the E1 temperature is close to room temperature However be aware that this kind of data results often when there is a height difference between indoor units Reducing the amount of refrigerant will improve the refrigerant flow however reducing it too much will increase the likelihood of alarms related to low oil level scroll side the low pressure SW and discharge temperature Use caution Example This alarm may result when the service valve is closed or when valve leakage particularly from the mechanical valve occurs F17 Alarm Alarm conditions 1 Sensor short circuit A fa Sensor opensret S O Probable cause 1 Sensor malfunction including connector A e js
86. eratures E Outdoor unit alarm history monitor e Displays the outdoor unit alarm history E Mode settings e Setting mode 1 and setting mode 2 are used to make the outdoor EEPROM setting A t 3 WAY ECO i SYSTEM 3 Ordinary Display Controls and Functions Outdoor Unit Maintenance Remote Controller E Functions on the ordinary display e Connect the special service checker wiring to the outdoor unit PCB The connection is shown in the figure below Outdoor unit PCB RC 3P BLU PCB connector 3P BLU O gt ISO ES Special service checker wiring Relay connector 2P WHT Remote controller Ass y e If the communications line in the inter unit control wiring is connected it can be left as is O Incase of an independent outdoor unit 1 maintenance remote controller connected to 1 outdoor unit automatic address setting for indoor units not completed both setting mode 1 and setting mode 2 can be used e The overall system status for that refrigerant system is displayed 3 WAY ECO i SYSTEM 3 Ordinary Display Controls and Functions Outdoor Unit Maintenance Remote Controller O All units start stop Fig 1 lt Operation gt The ON OFF operation button can be used to start and stop all the indoor units The LED turns ON when 1 or more indoor units is operating e The LED blinks when an alarm has occurred at 1 or more indoor units during operation Switching b
87. eria for changing oil refrigeration cycle Color Odor Total acid value Hue Normal Yellowish None 0 02 or less 3 5 or less Abnormal Brownish Smells soma Changing the oil and system cleanin overheat operation not as strong as below ging y 9 with dry cores are necessary Motor burnout Brownish Pungent burnt odor Changing the oil and system cleaning blackish with dry cores are necessary It is difficult to measure the total acid value in the field therefore oil hue and odor are the rule of thumb Checking for carbon deposits and abrasive metal powder can additionally be used to assess the system condition f 3 WAY ECO i SYSTEM 4 Backup Operation Outdoor Unit Repair Procedures This system includes an emergency automatic backup function that allows the A C to operate during the period after trouble occurs until repairs are made However during repair and at other times use manual backup operation 4 1 Automatic Backup For details refer to the control functions section After the alarm details are sent to the control device control for automatic backup operation begins when the ON OFF button of the wired remote controller is pressed again operation is started after the alarm is cleared During this operating mode CHECK flashes on the wired remote controller only to inform the user that operation is in backup mode However this is not displayed on any other control devices e In order to cancel automatic backup mode
88. et mode determined by the above setting 18 2 Slime Countermeasure EEPROM 0C set only on the main unit This setting controls the operation of the drain pump setting Description oo Normal control setting at time of factory shipment 18 3 Delayed Start for Each System Outdoor EEPROM 3E set only on outdoor unit No 1 The operation start time can be delayed according to the set system addresses This setting reduces the voltage drop by preventing multiple systems from starting at the same time when operation is restarted after multiple operating systems were stopped due to a power outage or other cause i OF No delayed start setting at time of factory shipment Start begins after 1 second x System address Start begins after 2 seconds x System address Start begins after 3 seconds x System address 18 4 Automatic Backup Outdoor EEPROM 48 set only on outdoor unit No 1 Automatic backup is set to occur at the time the unit is shipped from the factory However the automatic backup function can be disabled by changing this setting to 1 A S 3 WAY ECO i SYSTEM 18 Service Maintenance Functions Control Functions 18 5 Automatic Backup Mode Outdoor EEPROM 49 set only on outdoor unit No 1 Two types of automatic backup modes when multiple outdoor units are installed can be selected Backup outdoor units operate only during special control Setting at time of factory shipment 1 Only the backup
89. etween cooling heating Fig 1 lt Operation gt The MODE button switches between heating and cooling modes e The specifications are equivalent to the heating cooling inputs on the previous outdoor unit PCBs e The display shows the operating mode of the indoor unit with the lowest unit No O All units test run Fig 2 lt Operation gt The A CHECK button switches test run ON OFF for all indoor units e Press and hold for 4 seconds to turn ON TEST is displayed while the test run is in progress e The status of test runs that are started from the indoor unit remote controller are not displayed on the outdoor unit maintenance remote controller e Double speed e Do not use for actual operation Doing so may damage the devices lt Operation gt The timer button 4 is used to switch between double speed and normal operation e During double speed operation the SLEEPING MODE A mark is displayed LED D eno a w t a 3 WAY ECO i SYSTEM 3 Ordinary Display Controls and Functions Outdoor Unit Maintenance Remote Controller E Display functions e Use the temperature setting Ta and _ _ buttons to change the item code o Ex En m
90. fully close the upper valve Next fully close the manifold gauge valves and stop the vacuum pump To ensure proper evacuation refer to the operating instructions that came with the vacuum pump Manifold gauge Upper side Lo Hi pe valve Lower side valve Vacuum pump Fig 13 E y 3 WAY ECO i SYSTEM 8 Charging Compressor Oil Outdoor Unit Repair Procedures 2 Charging compressor oil into oil charging tank Connect a piece of pipe to the lower valve and then insert the other end deeply into the bottom of the oil container Make sure you avoid letting any air be sucked into the tube Next run the vacuum pump and open the manifold gauge valves then open the upper and lower valves to begin charging oil into the charging tank First close the lower and then this one before stopping i Upper valve Manifold gauge ee Lo Hi Vacuum pump Fig 14 When the predetermined amount of oil has been charged into the oil charging tank immediately close the lower valve and start the vacuum pump to reduce the pressure below 101 kPa 755 mmHg 5 Torr Then close the upper valve and stop the vacuum pump caution TOR Do this operation quickly because compressor oil easily absorbs moisture caurion from the air 3 Charging compressor oil into outdoor unit Connect the lower valve to the low pressure sensor outlet with Schrader type push to release valve in the outdoor un
91. g data that does not appear in this list 2 Detailed Settings Function This allows the system address indoor unit address and other settings to be made for the individual or group control indoor unit to which the remote controller used for detailed settings is connected When detailed settings mode is engaged operation stops at the individual or group control indoor unit where the remote controller used for detailed settings is connected Simple settings items can also be set at this time lt Procedure gt Press and hold the A and buttons simultaneously for 4 seconds or longer O GEMS unit No 4 or AL L in the case of group control item code 1 and settings data ff XX are displayed blinking on the remote controller LCD display Fig 2 At this time the indoor unit fan or all indoor unit fans in the case of group control begins operating 9 If group control is in effect press the UNIT button and select the address unit No of the indoor unit to set At this time the fan at the indoor unit begins operating Press the temperature setting lA L_ _ buttons to select the item code to change Press the timer time 2 5 buttons to select the desired setting data For item codes and setting data refer to the following page Press the button The display stops blinking and remains lit and setting is completed Press the A butto
92. g refrigerant in the oil charging tank manifold gauge valves and connecting hoses Perform these procedures quickly and securely so that no air can enter After charge the necessary amount of new refrigerant by referring to the Installation Instructions that came with the outdoor unit To determine the completion of refrigerant recovery follow the instructions that came with the refrigerant recovery unit 8 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 8 1 If Refrigerant Has Already Been Charged to Outdoor Unit and charge with oil Or alternatively follow the procedure below 1 Connect a tube to the oil outlet port on the outdoor unit to be charged with oil Insert the other end of the tube into the oil container 2 Follow the instructions in 7 Evacuating System and apply vacuum to the outdoor unit to be charged with oil When this is done oil is charged into the outdoor unit through the oil outlet port 3 When the unit has been charged with the designated amount of oil stop the vacuum pump Ara Because oil absorbs moisture readily this work must be completed quickly E 3 WAY ECO i SYSTEM 8 Charging Compressor Oil Outdoor Unit Repair Procedures High pressure outlet port For 7 94mm dia connector O
93. gauge valve closed When charging has been completed with 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 CN102 Finally fully open all valves on the suction tube discharge tube liquid tube and balance tube However leave the balance tube fully closed if only a single outdoor unit is installed If backup operation was engaged follow the instructions in 4 Backup Operation and perform backup operation recovery If charging with an amount of new refrigerant equal to the amount of recovered refrigerant was not possible fully close the high pressure gauge valve on the manifold gauge Then while the unit is operating according to 5 2 1 Cooling operation for all units open the low pressure gauge valve on the manifold gauge and charge with the designated amount of refrigerant When charging with liquid refrigerant add refrigerant a little at a time in order to prevent liquid back flow Fully close the low pressure gauge valves on the manifold gauge follow the instructions in 8 Charging Compressor Oil and charge with the necessary amount of oil Also add an amount of oil that is equivalent to the amount that w
94. ges from 2 to 1 both the balance valve and recovery valve turn ON for up to 2 minutes However if the oil level becomes 2 during these 2 minutes this control is stopped When this control has been stopped it will not restart for 3 5 minutes unless the oil level becomes 0 2 Operation when oil level is 0 Both the balance valve and recovery valve turn ON and remain ON 5 1 4 Unit refrigerant oil recovery control utilizing balance tubes If the low oil level continues that outdoor unit oil receiving outdoor unit receives a supply of oil from operating outdoor units where the oil level is not low oil supply outdoor units 1 Control at the oil supply outdoor unit begins 3 minutes after the oil level at the outdoor unit changes to 0 or 1 Oil supply is performed for a maximum of 5 minutes from each unit 2 When oil supply is ended oil supply from that outdoor unit will not occur again for a period of No of outdoor units 1 x 5 minutes In addition oil supply is ended if the oil receiving outdoor unit oil level changes to 2 or if the oil supply outdoor unit oil level becomes low 3 The supply of oil is received from 1 unit at a time in sequence according to the order of priority of their inverter compressors 4 Operation during unit refrigerant oil recovery A Oil receiving outdoor unit The recovery valve turns ON and remains ON Because self separator oil recovery may occur simultaneously at the same unit
95. he A C units are selected with consideration for the maximum load Therefore in most cases the maximum capacity is not required Ordinarily the operating range of an inverter compressor is approximately 25 Hz 90 Hz however operating efficiency declines somewhat in the high frequency operating range With consideration for these characteristics control of inverter compressors in this system is divided into two ranges according to the frequencies Ordinarily for reasons of efficiency the upper limit for operation is approximately 50 Hz If greater capacity is required the next compressor is started When all compressors are operating and greater capacity is required the inverter compressors are operated at frequencies above approximately 50 Hz This control may increase the lifetimes of the inverter compressors and refrigerant oil If the number of connected outdoor units is small the number of inverter compressors is also small Therefore the compressors may operate at a high frequency even when the load is not large 2 Sequential operation beginning from unit No 1 By using the outdoor unit maintenance remote controller to change the outdoor unit EEPROM settings it is possible to start the units in sequence beginning from unit No 1 For information concerning EEPROM settings refer to the field application functions 3 WAY ECO i SYSTEM 3 Compressor Control Control Functions 3 3 Compressor Capacity Control The compressor
96. he completion of refrigerant recovery follow the instructions that came with the refrigerant recovery unit Faulty outdoor unit Other outdoor unit High pressure outlet port Manifold gauge For 7 94mm dia connector Lo Hi Low pressure outlet port Liquid tube service port For 7 94mm dia connector For 7 94mm dia connector E m EIN Refrigerant recovery cylinder E LH IS ro 1 qa a Measuring scale Connect from here to refrigerant recovery unit Fig 18 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures 10 1 Compressor Trouble Diagnosis and Check Methods Generally compressor failures can be classified into the following categories 1 Mechanical trouble A Locking intrusion of foreign objects galling etc B Pressure rise failure damaged valve seal bearing or other component C Noise damaged stator rotor valve or other component 2 Electrical trouble gt A Coil burning B Open circuit C Insulation failure D Short circuit Trouble diagn
97. high pressure gauge valve on the manifold gauge When charging has been completed with 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 first turn the power OFF at the repaired outdoor unit then remove the short circuit at the AP pin CN102 Then fully open all valves on the suction tube discharge tube liquid tube and balance tube However leave the balance tube fully closed if only a single outdoor unit is installed 8 If backup operation was engaged follow the instructions in 4 Backup Operation and perform backup operation recovery 9 If charging with an amount of new refrigerant equal to the amount of recovered refrigerant was not possible fully close the high pressure gauge valve on the manifold gauge Then while the unit is operating in Cooling mode open the low pressure gauge valve on the manifold gauge and charge with the designated amount of refrigerant A When charging with liquid refrigerant add refrigerant a little at a time in order to prevent liquid back flow 10 Fully close the low pressure gauge valves on the manifold gauge follow the instructions in 8 Charging Compressor Oil and charge with the necessary amount of oil Also add an amount of oil that is equivalent to the amount that was drained from the oil separators 11 Remove the manifold gauge
98. icing materials and check the indoor unit quantity setting SW S004 S005 2 Check the inter unit control wiring at the indoor and outdoor units Correction After correcting the indoor unit quantity setting or the inter unit control wiring perform automatic address setting again 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis E16 Alarm e fee Automatic address setting alarm too many units Alarm conditions The number of indoor units was too many when automatic address setting was performed After initial communications were completed an unrecognized unit was detected Probable cause 1 The number of indoor units set at the indoor unit quantity setting SW S004 S005 on the outdoor unit PCB is less than the number set 2 The inter unit control wiring is wired incorrectly Check 1 Refer to the test run servicing materials and check the number of indoor units that is set 2 Check the inter unit control wiring at the indoor and outdoor units Correction After correcting the indoor unit quantity setting or the inter unit control wiring perform automatic address setting again Example fm Notes _ _ d oS O E20 Alarm Alarm code E20 Alarm meaning No indoor units at automatic address setting Alarm conditions When automatic address setting was performed no indoor units were recognized Probable cause The inter unit control wiring from the outdoor unit to the indoor units has been cut Serial con
99. igerant accumulation or recovery at stopped outdoor units stopped due to failures of functional elements After the judgment is displayed repeated judgment will occur under new operating conditions if all outdoor units continue operating Therefore the judgment display may change when later judgments occur Judgment mode is automatically canceled after 4 hours A 3 WAY ECO i SYSTEM 19 Other Functions Control Functions 3 Outdoor unit PCB LED indications in judgment mode f LED1 LED2 Recommended response Judgment mode Blinking Blinking Insufficient gas Blinking Charge with refrigerant a little at a time OFF Blinking Recover refrigerant a little at a time Judgment not Blinking possible alternately When judgment mode is not engaged the LED indicates the normal display OFF or else indicates alarms or other information If the insufficient gas or overcharge judgment is not stable then recover refrigerant a little at a time when the overcharge display appears End refrigerant adjustment when the normal or insufficient gas display appears 4 Canceling judgment mode When judgment mode is cancelled the LED returns to the standard status display OFF unless an alarm or other event has occurred 1 Automatic cancel Judgment mode is canceled automatically when 4 hours have passed after it was started 2 Forced cancel Short circuit the CHECK pin while the judgment mode display is active in order to cancel judgme
100. il tube service port For 6 35mm dia connector Oil Low pressure outlet port For 7 94mm dia connector Manifold gauge Lo 9 Hi Vacuum pump Fig 17 8 3 Charging Additional Compressor Oil after replacing compressor The rated amount of oil is pre charged in the compressors as given below Compressor model Pre charged amount of oil liters SPW C0705DZH8 C 9RVN273HOU 1 1 9 Inverter controlled rotary compressor JT160G KTYE SB 1 2 1 Constant speed scroll compressor SPW C0905DZH8 C 9RVN273HOU 1 1 9 Inverter controlled rotary compressor JT170G KTYE SB 1 2 1 Constant speed scroll compressor SPW C1155DZH8 C 9RVN273HOU 1 1 9 Inverter controlled rotary compressor JT170G KTYE SB 1 2 1 Constant speed scroll compressor SPW C1305DZH8 C 9RVN273HOU 1 1 9 Inverter controlled rotary compressor JT160G KTYE SB 2 2 1x2 Constant speed scroll compressor SPW C1405DZH8 C 9RVN273HOU 1 1 9 Inverter controlled rotary compressor JT170G KTYE SB 2 2 1x2 Constant speed scroll compressor When replacing a faulty compressor be sure to first measure the amount of remaining oil in the compressor Charge additional new oil equal to the difference in the remaining oil and the rated amount as listed above For example Type of replaced compressor JT170G KTYE SB Remaining oil in the removed compressor 2 2 Q Additional oil to be charged 2 2 1 remaining oil i
101. ile the compressor 1 is stopped Compressor 2 amp 3 Current value at compressor 2 and 3 is less than 2 0 A when 2 seconds or more had passed after the compressors began operation and output No current is detected even though the compressors are operating Probable cause CT circuit failure including cut wiring etc Disconnected CT circuit connector Missing phase where CT circuit is connected This CT circuit is connected to the connector of the other CT circuit PCB failure Electrical noise CT circuit failure PCB failure Trouble Current value during compressor operation is below the threshold value Check e Check that the connector is not disconnected e Check the continuity of the CT circuit e Install a normal CT in place of this CT and check If current is detected then the PCB can be judged OK gt CT circuit failure e Check that current is flowing in the phase where the CT circuit is connected Check voltage and current 2 Crossed wiring or installation error Trouble When the compressor is stopped the current value at the other compressor is high Yx When this type of condition occurs seizing detection control takes priority 3 If the cause is still unknown after checking the above then it is possible that noise is the cause of the trouble It is necessary to connect a PC or other instrument Correction 1 Replace the CT circuit 2 Replace the outdoor unit PCB 3 Correct the problem Use a normal CT as
102. ions Probable cause 1 A unit that uses R407C refrigerant or a R22 model unit was connected by mistake 2 The connected unit is correct however the refrigerant type setting in the outdoor unit EEPROM item code 80 is incorrect Check 1 Check the refrigerant type at the connected unit 2 Use the outdoor unit maintenance remote controller and check the item code 80 refrigerant type If the setting is incorrect change it to R410A Correction J o O Exampe fe Notes The outdoor unit s maintenance remote controller is required in order to set the refrigerant type in the outdoor unit EEPROM 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis P03 P17 P18 Alarm Alarm meaning Compressor 1 discharge temperature trouble Compressor 2 discharge temperature trouble Compressor 3 discharge temperature trouble Alarm conditions Probable cause Inverter compressor 1 Temperature is 105 C or higher and pre trip stop has occurred Compressors 2 3 constant speed Pre trip stop occurs at 105 C or above The alarm occurs when pre trip stop occurs more than once However the pre trip counter is cleared if the compressor operates continuously for a specified length of time 1 Clogging of liquid valve capillaries 2 Insufficient amount of refrigerant including trouble resulting from an insufficient initial charge and from gas leakage Blocking of low pressure parts caused by intrusion of foreign objects m
103. iring i Outdoor unit i Inter unit control wiring Servicing No 6231785082 E D Outdoor unit control PCB E J X Operation manual included in package Remote Remote controller controller e The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller to the outdoor unit PCB e Ordinary remote controllers or other controller are still required for the indoor units even when the outdoor unit maintenance remote controller is connected e 3 WAY ECO i SYSTEM 2 Functions Outdoor Unit Maintenance Remote Controller E Functions on the ordinary display 1 Functions Button operations can be used to perform the following functions e Start stop of all indoor units e Switching between cooling and heating e Test run of all indoor units e Double speed operation of indoor units Do not use for actual operation Doing so may damage the devices 2 Display The following can be displayed e Alarm details display e No of indoor outdoor units e Unit Nos of connected indoor outdoor units Indoor outdoor unit operating status blinks when an alarm occurs e Indoor unit thermostat ON e Display of individual outdoor unit alarms e Total operating time of outdoor unit compressors e Oil level of the outdoor unit oil sensor e Total outdoor unit power ON time e Outdoor unit microcomputer version other information E Temperature monitor e Displays the indoor outdoor unit sensor temp
104. is a failure in the pressure sensor first verify that the service valve was not accidentally left closed that there are no blocked cir cuits and that there is no leakage of refrigerant into stopped outdoor units Also check for a difference between the high pressure measured by the manifold gauge and the pressure detected by the pressure sensor 2 Low pressure sensor failure Identification of a failure caused by a loose or displaced connector is based on the relationship between the temperature detected by the low pressure sensor and the various temperature thermistors Before concluding that a failure has occurred check for a difference between the low pressure measured by the manifold gauge and the pressure detected by the low pressure sensor High pressure sensor failure Low pressure sensor failure Alarm display F16 F17 A 3 WAY ECO i SYSTEM 17 Backup Operation Control Functions lt Field Application Functions gt 17 1 Automatic Backup Operation This system includes a function for automatic backup operation An alarm is also displayed to inform the operator that a failure has occurred 1 Alarms that result in automatic backup operation When compressor trouble or fan motor trouble makes emergency continued operation impossible automatic backup operation mode is engaged Automatic backup mode is not engaged in cases of communications alarms automatic reset alarms and other instances when emergency operation is possible b
105. ischarge temperature of this compressor rises The discharge temperature remains high immediately after the compressor stops Wait for some time after the compressor stops and observe Check for crossed wiring and installation errors Continued e 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis Check 3 Leakage from the discharge tube check valve Trouble Although the other compressor is operating and this compressor is stopped the discharge temperature of this compressor rises together with the temperature of the other compressor 4 The ambient temperature around the outdoor unit when it is stopped is 43 C or higher 5 If the cause is still unknown after checking the above then it is possible that electrical noise is the cause of the trouble It is necessary to provide a line filter or carry out other noise countermeasures Correction 1 Replace the sensor 2 Replace the outdoor unit PCB 3 Carry out noise countermeasures 4 Repair the refrigerant tubing 5 Adjust the amount of refrigerant Correct the trouble Ths alarm does not indicate that the sensor is disconnected In order to prevent overheating during operation the outdoor units in this system will not allow a compressor to start if the discharge temperature does not decrease while the compressor is stopped If a sensor malfunction results in continuous detection of a high discharge temperature then the compressor may stop for no appare
106. it Maintenance Remote Controller Displays outdoor unit alarms only Does not display indoor unit alarms e Check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device lt Operating procedure gt Press and hold the A CHECK button and button simultaneously for 4 seconds or longer to change to tdoor unit alarm history mode EN outdoor unit ala story mode DROBR During temperature monitoring 4 displays TD E The display and operations are the same as the D Z LAAJENI Ca 3 monitoring of the alarm device history that is performed using the unit remote controller However the outdoor unit address appears instead of the unit No Press the UNIT button and select the outdoor unit for alarm history monitoring Use the temperature setting C amp D and _ _ buttons to select the item code for the alarm history The display shows the address of the selected outdoor unit the item code and the alarm history alarm data 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 unit sub bus address always 1 for 3 WAY ECO i units Unit code is displayed as 01 08 01 indicates the most recent alarm The alarm history is indicated by the alarm code If there have been no alarm codes is displayed
107. it to be oil charged and then connect the high pressure sensor outlet with push to release valve to the upper valve via the manifold gauge valves at Hi pressure gauge side In addition connect the suction line service port with push to release valve to the DPR Discharge Pressure Regulator Carry out the connection work quickly to avoid letting air enter The hoses may be subject to internal pressure from the refrigerant inside the A outdoor unit A Schrader type push to release valve is provided at each connection port e Since the DPR valve opens at pressures of 2 5 MPa and above be sure to connect the DPR to the suction line service port low pressure side High pressure outlet port For 7 94mm dia connector Low pressure outlet port For 7 94mm dia connector Manifold gauge Lo Hi Lower valve Suction tube service port For 7 94mm dia connector E y 3 WAY ECO i SYSTEM 8 Charging Compressor Oil Outdoor Unit Repair Procedures Next follow the instructions in 5 2 1 Cooling operation for all units at the outdoor unit where oil will be charged and start cooling operation at all units When the operating conditions have stabilized perform steps 1 2 and 3 in sequence and open the valves When this is done the refrigerant pressure from operation forces the oil out of the oil charge tank and oil is charged into the outdoor unit from the low pressure outlet por
108. itrogen etc in the repaired outdoor unit and tubing 7 1 Evacuating Repaired Outdoor Unit 1 Check that each service valve of the suction tube discharge tube liquid tube and balance tube in the outdoor unit are fully closed 2 Connect the manifold gauge valves to the high pressure and low pressure sensor outlets of the outdoor unit Fig 11 3 Connect the manifold gauge valves to the vacuum pump If the AP pins CN102 on the outdoor control PCB have already been short circuited step 4 is not necessary 4 Turn off power to the repaired outdoor unit and short circuit the AP Air Purge pins on the outdoor control PCB By short circuiting the AP pins and turning on power to the outdoor unit all Ara 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 5 Turn the power ON at the outdoor unit where vacuum will be applied Then run the vacuum pump and continue evacuation until the vacuum condition falls to less than 101 kPa 755 mmHg 5 Torr To ensure proper evacuation refer to the operating instructions that came with the vacuum pump Manifold gauge Lo Hi SA Vacuum pump High pressure outlet port For 7 94mm dia connector O Low pressure outlet port For 7 94mm dia
109. its are connected at only one solenoid valve kit and also multiple remote controllers are connected Installation of the common use solenoid valve kit from a PC has not been made 1 Check that the service valve is open 2 Check that none of the valves solenoid valves mechanical valves in the main refrigerant circuit is closed due to an operation failure 3 Check that there is no possibility of foreign objects or water having entered the refrigerant circuit 4 Check that valve leakage at a stopped sub unit has not resulted in accumulation of refrigerant at that sub unit 5 Check that no refrigerant leakage has occurred 6 Check whether the wiring from the solenoid valve kit is actually connected to the different indoor unit or not 7 The system is that the multiple indoor units are connected at only one solenoid valve kit and also multiple remote controllers are connected Check whether installation of the common use solenoid valve kit from a PC has been made or not Confirmation from the address setting software of a PC Correction 1 If there was a valve operation failure in general it is necessary to replace the valve 2 If a foreign object or moisture has entered the circuit install a strainer or dry core depending on the degree of the problem 3 If refrigerant has leaked into stopped sub units it is likely that valve leakage has occurred The valve must be replaced Example PT Notes e 3 W
110. ive load This is used for test run checks etc 2 Even within the same area the compressor capacity varies depending on the refrigerant temperature 3 Temperature PX is the coefficient value used to correct for any deviation with the high pressure or condensation temperature It may vary At the time of shipment it is 55 5 C 4 If the condensation temperature Tc enters area D and the thermostat turns OFF the next time the compressor starts it may restart from a lower capacity 5 When the area changes to area C area C is considered to be area B for control purposes for the first 6 minutes even if the horsepower is the minimum value within the range where capacity control is possible operation with inverter frequency of 25 Hz only Subsequently if C area continues the thermostat turns OFF 3 6 3 Control of condensation temperature and evaporation temperature during mixed cooling heating operation During mixed cooling heating operation the control maintains a heat balance with a target evaporation temperature Te for the Cooling mode indoor units of 2 6 C and a target condensation temperature Tc for the Heating mode indoor units of 48 51 C Heat balance control is performed by varying the compressor capacity and heat discharge heat intake of the heat exchanger 1 Increasing decreasing the compressor capacity e When evaporation temperature Te is high and condensation temperature Tc is low This occurs when bo
111. ke temperature by 1 C sie temperature 0000 No intake temperature shift shift 0001 Shifts intake temperature by 1 C 0009 Shifts intake temperature by 9 C 0010 Shifts intake temperature by 10 C Automatic 0000 Function disabled stop time 0001 Stops automatically 5 minutes after operation starts after z a 0002 patada Stops automatically 10 minutes after operation starts Can be set 0123 Stops automatically 615 minutes after operation starts in 5 minute 0124 Stops automatically 620 minutes after operation starts units 0125 Stops automatically 625 minutes after operation starts 0001 Unit No 1 0002 Unit No 2 Indoor unit 0003 Unit No 3 address l 0064 Unit No 64 0099 Not set r E 3 WAY ECO i SYSTEM 2 Detailed Settings Function Remote Controller Functions Description i 0000 minutes i 1B Forced thermostat ON time n001 4 minutes 010 10 C 9 C Cooling discharge 008 8 C temperature shift 0010 010 10 C 10 C 9 C Heating discharge 008 8 C temperature shift Q AJo m o ey 0010 0001 Temperature shift for 2902 cooling heating change in 0003 aut heatcoo mode 0007 0018 18 C Lower limit at shipment 0019 gt am cu 0029 Lower limit 0030 30 C Upper limit at shipment ba g 0016 16 C Lower limit at shipment es 0017 py 0029 eas to py 0030 30 C Upper limit at shipment we geting args setting range saa ae
112. l room select a suitable model and installation procedure so that if the refrigerant accidentally leaks out its density does not reach the limit and in the event of an emergency measures can be made before injury can occur In a room where the density may exceed the limit create an opening with adjacent rooms or install mechanical ventilation combined with a gas leak detection device The density is as given below Total amount of refrigerant kg Min volume of the indoor unit installed room m lt Density limit kg m The density limit of refrigerant which is used in multi air conditioners is 0 3 kg m ISO 5149 1 If there are 2 or more refrigerating systems in a single refrigerating device the amount of refrigerant should be as charged in each independent device For the amount of charge in this example Outdoor unit e g charged amount 10 kg 9 9 chatged amount 15 kg Indoor unit O E Es Room A Room B Room C Room D Room E Room F The possible amount of leaked refrigerant gas in rooms A Band C is 10 kg The possible amount of leaked refrigerant gas in rooms D E and F is 15 kg RoHS 2 The standards for minimum room volume are as follows 1 No partition shaded portion EJ 2 When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas opening without a door or an opening 0 15 or larger than the res
113. lectrical component box in the same position as it was before Be sure to check for looseness of the power terminal connection at the compress or Asa terminal plate and to check by pulling vertically on the connections If the termi nals become disconnected easily replace the wiring Assy 13 Follow the instructions in 7 Evacuating System and apply vacuum to the outdoor unit where the compres sor was replaced 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures C Replacing constant speed compressor 2 Compressor 3 on the remote controller alarm display E Removal 1 Connect the manifold gauge to the high and low pressure outlet ports at the outdoor unit where the compressor will be replaced Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement 2 Follow the instructions in 1 Removing Panels and 2 Removing Electrical Component Box and Duct and remove the corresponding parts from the outdoor unit where the compressor will be replaced 3 Remove the cap at the compressor terminal plate Disconnect the power terminal 4 Remove the crankcase heater 5 Remove the bolts washers and rubber washers 1 each at 3 locations The compressor right inner leg is not anchored 6 Prepare to disconnect the 3 brazed locations shown in the figure 27 Discharge sensor outlet Brazed locations 3 Ly a mi Ail M Ml Con
114. ll remaining refrigerant into the recovery cylinder Since neglecting this procedure may leave some refrigerant in the system it is important that you carry out this step 6 Carry out refrigerant recovery CAUTION To determine the completion of refrigerant recovery follow the instructions that came with the refrigerant recovery unit Manifold gauge Lo Hi Refrigerant recovery unit High pressure outlet port For 7 94mm dia connector E Refrigerant recovery cylinder O Low pressure outlet port For 7 94mm dia connector O le o e A E 3 WAY ECO i SYSTEM 5 Recovering Refrigerant Outdoor Unit Repair Procedures 5 2 Refrigerant Recovery Procedures Indoor Unit The flowchart below shows the refrigerant recovery procedures you must follow when replacing or repairing the indoor unit due to trouble in the refrigerant circuit 5 2 1 Cooling operation for all units Ball valve is provided in the indoor unit YES 5 2 2 Refrigerant recovery Turn off all equipment in system Replace or repair faulty unit procedures 1 7 F Check for leakage in repaired unit Turn off all equipment in system When replacing or repairing a faulty Evacuate air from repaired unit unit let other normal indoor units run excluding indoor unit where refrigerant is recovered 5 2 3 Refrigerant recovery procedures 2 Charge refrigerant in repair
115. llowing the refrigerant to be recovered from all tubes which are separated by solenoid valves If this work is not performed it will not be possible to recover all of the refrigerant at the refrigerant recovery device Be sure to perform this step 10 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 recovered refrigerant NOTE To determine the completion of refrigerant recovery follow the instructions that came with the refrigerant recovery unit 9 2 If Remote Controller RCS TM80BG is Not Available for Maintenance of the Outdoor Unit 1 Refer to 4 Backup Operation and perform backup operation 2 Connect the manifold gauge valves at the Lo side to the low pressure outlet port of the outdoor unit to be repaired Also connect the refrigerant recovery cylinder to any one of the normal outdoor units at the liquid line service port Schrader type push to release valve Perform the connection work quickly so that no air is allowed to enter Fig 18 Connecting the refrigerant recovery cylinder is done to prevent pressure from rising excessively during the backup operation by recovering the refrigerant from the outdoor unit to be repaired Measure the weight of the refrigerant and cylinder itself beforehand and provide sufficient safety measures such as installing a high pressure cutout in the circuit The hoses may be
116. lure Check Check the fan motor wiring the Hall IC wiring and the connector connections If the wiring and connectors are normal then check that the capacitor of the Hall IC input circuit is securely soldered onto the PCB Also use a tester and measure the resistance between fan HIC power HIC and ground HIC If there is a short circuit there is an HIC malfunction ma ran gt DON T TOUCH MN Fan circuit on the outdoor unit control PCB In the W 3WAY ECO i the fan circuit PCB is integrated with the outdoor unit PCB Correction If the fan does not start the below corrections may be effective 1 If there is a fan HIC failure or circuit failure replace the PCB 2 If the fan motor is locked replace the fan motor Turn OFF the power and check the continuity of and on the fan circuit PCB P26 Alarm seme e 22 Alarm meaning Inverter compressor high frequency overcurrent alarm Alarm conditions This alarm occurs when current trouble or current detection trouble occurs at an inverter frequency of 80 Hz or higher after start when trouble judgment current is detected in the primary or secondary current or when an instantaneous secondary current of 48 A or higher is detected Probable cause The detection methods are the same as for P16 However the fact that operation up to high frequencies is possible does not necessarily mean that a compressor failure is the cause of the trouble Start th
117. m Display lt 5 2 Outdoor Unit Control Panel LED Display 0 cee eee eee eee eee 5 4 Remote Controller Servicing Functions 0 cee eee eee eee 5 5 3 WAY ECO L Alarm Codes iio bee eee dae cee eee ee ea ee 5 7 Blinking Inspection Display 0 e eee eee eee eee 5 27 Inspection Of Parts lt s ec e eee ee eee ewer eee ee ee eee eee eee eee 5 29 TESEP A oc wesw case AA as a 5 30 1 Contents of Remote Controller 3 WAY ECO i SYSTEM Switch Alarm Display Trouble Diagnosis ON O Blinking X OFF Serial communication errors Mis setting Wired remote control display Possible cause of malfunction a Remote controller is detecting Error in receiving serial communication signal Signal from error signal from indoor unit main indoor unit in case of group control Outdoor system i i address indoor unit address or indoor unit address lt E01 gt Operating lamp Wireless remote controller receiver display Operation for heating independent main sub unit setting has not been made pining Auto address is not completed xt e e Error in transmitting serial communication signal Indoor unit is detecting error signal from remote controller and system controller Indoor unit is detecting error e Error in receiving serial communication signal signal from outdoor unit When turning on the power supply the number of connected indoor units does not correspond to the n
118. moving the hexagonal caps hold the fixing nut at the main unit side so as not to loose it with a wrench or spanner And then loosen and remove the hexagonal cap 4 Remove the oil equalizer tube connector parts along with the O ring from the removed compressor and mount them on the replaced new compressor Oil equalizer tube connector Hexagonal cap Fixing nut at the main unit side Fig 29 5 Install the crankcase heater onto the new compressor 6 Use only the bolts to temporarily fasten the cushioning rubber 2 pieces at the position as shown in the figure 30 7 Place the 2 pieces of cushioning rubber onto the legs of the new compressor 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures Cushioning rubber Bolt Temporary mounting back side 2 locations 1 piece each ew a a IAN ALL 3 C rankcase heater Fig 30 8 Place the remaining cushioning rubber onto A EM the new compressor at the location shown A x in the figure 31 MESS E aero Bo K TN tening the 2 pieces of cushioning rubber and anchor the 3 compressor legs using the bolts washers and rubber washers 9 Remove the bolts which are temporarily fas Y 7 Brazing locations 4 10 Insert the capillary tube assembly as shown in the figure 31 at the 2 brazing locations indicated 11 Shape the tubes and insert them at the remaining 2 brazing locations S
119. mpressor including compressors in other units or other device starts It also occurs when the power wiring is extremely long Check Check the voltage between each of the phases However if this trouble occurs when other devices or compressors start then an oscilloscope is required 5 PCB failure Trouble Check Check that the current value measured with the clamp meter is not lower than the value measured with the PC or remote controller 6 If the cause is still unknown after checking the above then it is possible that noise is the cause of the trouble It is necessary to connect a PC or other instrument 1 Replace the compressor 2 Replace the CT circuit 3 Repair the power circuit 4 Adjust the primary side power Repair the power wiring 5 6 Replace the outdoor unit PCB Correct the trouble In the case of a compressor failure it is likely that steps must be taken to correct the cause of the compressor failure Such as liquid back up in order to prevent recurrence Be sure to check that there is no cause which may resuit in compressor locking e 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis H03 H13 H23 Alarm Alarm code Alarm meaning Compressor 1 CT sensor disconnected or short circuit Compressor 2 CT sensor disconnected or short circuit Compressor 3 CT sensor disconnected or short circuit Alarm conditions Compressor 1 Current value of more than 18 0 A is detected wh
120. mputer identifies a trouble signal indicating abnormal HIC temperature or other trouble from the HIC The HIC judges the current and temperature and outputs the trouble signal In general this indicates trouble with the HIC itself Probable cause Overcurrent in HIC circuit and the resultant abnormal heating caused by HIC failure Check the power wiring and connector wiring If the wiring and connectors are normal use a tester to measure the resistance between the compressor HIC power HIC and ground HIC If there is a short circuit there is an HIC malfunction HIC If an HIC failure is found replace the PCB Exampe A Turn OFF the power and check the continuity of HIC and HIC on the HIC PCB L04 Alarm Outdoor system address duplication Alarm conditions Communication by inter unit control wiring was received that contained the same address as that unit 5 times or more within 3 minutes Probable cause Incorrect outdoor system address settings Check the system address settings again Correct the system address settings Example A Notes Recovery from this alarm occurs automatically when communication that contains the same address as that unit is not received for 3 minutes after detection 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis L10 Alarm Alarm code Alarm meaning Alarm conditions Outdoor unit capacity not set Probable cause Check Correction Example
121. n Outdoor Unit Repair Procedures lt lf the failed unit is the No 1 outdoor unit main unit gt If the No 1 unit main unit has failed a different outdoor unit must be set as the No 1 unit main unit e Settings at the failed No 1 outdoor unit No particular changes However close all service valves suction tube discharge tube liquid tube balance tube at the failed outdoor unit and disconnect the wiring between the outdoor units main sub unit wiring e Settings at No 1 unit main unit Switch on outdoor unit control PCB Action System address S003 S002 Make the same settings as on the failed No 1 unit No of indoor units S005 S004 Make the same settings as on the failed No 1 unit No of outdoor units S006 Subtract the number of failed units from the current setting Outdoor unit No S007 Change to 1 To this outdoor unit connect the inter unit communication line which was previously connected to the No 1 unit main unit After recovery work is completed return the outdoor unit No setting now 1 to the value it was before the failure and repair If this is not done there will be duplicated outdoor unit No settings In this case an alarm does not occur immediately however operation may be unstable Reconnect the inter unit communications line to the No 1 unit e Settings at other outdoor units No particular changes 2 Adjusting the refrigerant for backup operati
122. n the removed compressor 2 1 2 rated oil amount 0 1 4 Ifthe result is a negative amount remaining oil in the removed compressor is less than the rated amount it is not necessary to discharge the extra oil from the system For the method used for additional oil charging after compressor replacement refer to 8 1 If Refrigerant Has Already Been Charged to Outdoor Unit e E ik 3 WAY ECO i SYSTEM 9 Pumping Out Refrigerant from Outdoor Unit Outdoor Unit Repair Procedures Required equipment and tools Jumper wire with clips adjustable wrench set of manifold gauge valves refrigerant recovery unit pre purged refrigerant cylinder for recovery flat head screwdriver and outdoor unit maintenance remote controller This work is performed in order to collect the refrigerant from an outdoor unit where repairs other than compressor replacement will be performed into other outdoor units and indoor units and the refrigerant tubing 9 1 If Remote Controller RCS TM80BG is Used for Maintenance of Outdoor Unit 1 Refer to 4 Backup Operation and perform backup operation 2 Connect the manifold gauge valves at the Lo side to the low pressure outlet port of the outdoor unit to be repaired Also connect the refrigerant recovery cylinder to any one of the normal outdoor units at the liquid line service port Schrader type push to release valve Perform the connection work quickly so that no air is allowed to enter Fig
123. n to return to normal remote controller display 3 WAY ECO i SYSTEM Remote Controller Functions A z 3 WAY ECO i SYSTEM 2 Detailed Settings Function Remote Controller Functions List of Detailed Setting Items Setting data Description No Description No Description 1 Way Air Discharge 4 Way Air Discharge 2 Way Air Discharge 0099 Semi Concealed A 900 Semi Concealed X XM 0092 Semi Concealed S 1 Way Air Discharge 2 Concealed Duct High Type 9093 Semi Concealed Slim L 0005 r Concealed Duet U US Gove Static Pressure D 0007 Ceiling Mounted T 0008 Wall Mounted K 0010 Floor Standing F Concealed Floor Poul Standing FM Zz i 000 22 Type 7 0003 0005 36 Type 12 71 Type 25 0007 45 Type 16 0009 56 Type 18 0011 For FR254 and FMR254 Indoor unit 80 Type 25 capacity 0012 Except FR254 0013 90 Type 30 0015 112 Type 36 FMR254 0017 140 Type 48 0018 160 Type 60 0021 224 Type 76 w m dCi 0001 Unit No 1 0002 Unit No 2 0003 Unit No 3 l 0030 Unit No 30 0099 Not set _ System address 0000 Individual 1 1 Indoor unit with no group wiring Group control 0001 Main unit One of the group control indoor units address 0002 Sub unit All group control indoor units except for main unit 0099 Not set 010 Shifts intake temperature by 10 C 009 Shifts intake temperature by 9 C Cooling Shifts inta
124. nd address setting is not made in the same series of all indoor units 2 Wiring shown below that are not allowed Remote control group wiring with a different solenoid valve kit connected to the indoor unit a Solenoid Solenoid Solenoid Solenoid CA kit valve kit valve kit valve kit Indoor unit Indoor unit Indoor unit it Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor uni Indoor unit Indoor unit v v y o en 7 7 TOA a 7 7 Remote Remote Remote Remote Remote Remote Remote Remote Remote Remote Remote Remote Remote controller controller controller controller controller controller controller controller controller controller controller controller controller 2 Remote control group wiring more than one 1 indoor unit with types D and GU within only one solenoid valve kit a as Solenoid Solenoid Solenoid Solenoid valve kit valve kit valve kit valve kit Indoor unit 1 Indoor unit Except Indoor unit Indoor unit Except Except Indoor unit Indoor unit Except Types DandiGU 2 Types D and Gu Pes D and GU E _Typ sD and Gu Types Djand GU z Types and GU Remote Remote Remote fa Remote Remote x Remote controll
125. nd the heating capacity heat discharge is high The outdoor heat exchanger capacity is increased increasing the system condensation capacity and lowering the condensation temperature Tc The amount of heat discharge at the outdoor unit heat exchanger increases increasing the heat intake at the Cooling mode indoor units and lowering the evaporation temperature Te Primarily when both the evaporation temperature Te and condensation temperature Tc are low This occurs when the cooling capacity heat intake is high and the heating capacity heat discharge is low The outdoor heat exchanger capacity is decreased decreasing the system condensation capacity and raising the condensation temperature Tc The amount of heat discharge at the outdoor unit heat exchanger decreases decreasing the heat intake at the Cooling mode indoor units and raising the evaporation temperature Te Outdoor Unit Heat Exchanger Control Table when the outdoor unit heat exchanger is functioning as a condenser Low lt _ Condensation Temp Tc gt High Compressor stop lt a E CY E a 5 RP lt 2 Lo ha o o G gt W z o ai 3 WAY ECO i SYSTEM 3 Compressor Control Control Functions 3 Increasing decreasing the heat exchanger capacity when the outdoor unit heat exchanger is functioning as an evaporator e Primarily when both the evaporation temperature Te and condensation temperature Tc are low This occurs when th
126. ndoor unit capacity Cooling OFF However position is 20 pulses for types D and GU Heating Thermostat Auto ON Heating Thermostat Fixed pulse for cooling according to indoor unit capacity OFF However position is 20 pulses for types D and GU 20 pulses 5 20 pulses 5 Fixed pulse for cooling according to indoor unit capacity Fixed pulse for cooling according to indoor unit capacity Thermostat ON Thermostat OFF Thermostat ON 100 pulses Performs SH control in the range of 55 480 pulses 1 Cooling 20 pulses Outdoor cycle Condenser Healing Thermostat 100 pulses defrost control evapolator OFF However position is 20 pulses for types D and GU Thermostat Auto ON Cooling Thermostat Cooling OFF Heating Thermostat Auto ON Heating Thermostat 100 pulses OFF However position is 20 pulses for types D and GU Performs SH control in the range of 55 480 pulses 1 20 pulses 100 pulses 5 In the case of the common use electronic valve kit and more than one 1 indoor unit in the heating mode within the same electronic valve kit the position becomes 20 pulses i k 3 WAY ECO i SYSTEM 11 Solenoid Valve Kit Control Control Functions This device connects the solenoid valve kit which is used to switch between indoor unit cooling heating for 3 WAY types 1 Operation of the except types D and GU solenoid valve kit Remote Discharge Balance EP valve evap
127. nector CN006 3P BLU on any one of the outdoor unit control PCBs Then start a test run of all units Press and hold the CHECK button for 4 seconds Press the MODE button and change to cooling operation Even if the mode that is originally displayed is Cool be sure to press the A MODE button once or more to change to cooling operation Pressing the MODE button ensures that heating cooling operation is not mixed and that all units are operating in either Heating or Cooling mode Use the remote controller RCS TM80BG to check the operating status of the indoor units Check that all units are operating in Cooling mode AN With the 3 way valve it is difficult to determine whether operation is heating or cooling by touching the tubing A Bl 3 WAY ECO i SYSTEM 5 Recovering Refrigerant Outdoor Unit Repair Procedures 2 If the remote controller RCS TM80BG is not available for maintenance of the outdoor unit Determine the outdoor unit where the unit No setting S007 3P DIP switch BLU on the outdoor unit control PCB is set to No 1 Short circuit the mode change pin CN101 on the outdoor unit control PCB of the No 1 unit Then short circuit the test run pin CN023 to start operation Short circuiting the mode change pin ensures that heating cooling operation is not mixed and that all units are operating in either Heating or Cooling mode Check the displays of the indoor unit remote controllers
128. nector 1 CN001 is disconnected at the outdoor unit The power is OFF at all indoor units in the system Check E24 Alarm Alarm code Outdoor unit INV failed to receive communication from other outdoor unit constant speed Alarm conditions After initial communications were completed communications from an outdoor unit stopped Probable cause 1 After initial communications were completed the control wiring between main and sub outdoor units was cut 2 After initial communications were completed the outdoor unit power was turned OFF f 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis E25 Alarm A A Outdoor unit address setting failure duplication Alarm conditions Communication by outdoor unit main sub control wiring was received that contained the same address as that unit 5 times or more within 3 minutes Probable cause The unit number is set incorrectly Check the unit number again Correct the incorrect unit number setting ECT ASES Notes Recovery from this alarm occurs automatically when communication that contains the same address is not received for 3 minutes E26 Alarm Alarm code E26 Alarm meaning Mismatch in outdoor unit quantity Alarm conditions After power initialization the set outdoor unit quantity did not match the number of outdoor units detected on the outdoor unit main sub control wiring for 3 minutes or longer 2 The outdoor unit main sub control wiring
129. ng software is used e Wiggle the sensor and check whether the trouble continues e Check whether the connector is partially disconnected from the PCB yy An F04 alarm will not result if the connector is completely disconnected circuit is open e If the cause is still uncertain check the following to determine whether a sensor or PCB failure has occurred Step 1 Connect the other compressor discharge sensor or a discharge sensor where the F04 alarm has not occurred to the connector for this compressor on the PCB Measure the temperature at the same point a location where temperature fluctuations are small and check whether there is a temperature difference Difference gt A PCB or sensor failure is possible No difference gt PCB and sensor are normal If an abnormality was found at Step 1 connect the problem compressor sensor to the other compressor connector on the PCB or to the PCB connector of a device where the F04 alarm has not occurred Measure the temperature at the same point a location where temperature fluctuations are small and check whether there is a temperature difference Difference gt Sensor failure No difference gt PCB failure X It is convenient at this time to have a discharge temperature sensor on hand 2 Crossed wiring or installation error Trouble Although the other compressor is operating and this compressor is stopped the discharge temperature of the other compressor does not increase and the d
130. ng on the trip counter value 1 If Trip counter 1 the horsepower increases at a speed that is 1 2 of ordinary roadmap control 2 If Trip counter 2 the horsepower increases at a speed that is 1 3 of ordinary roadmap control The trip counter is cleared if no trip occurs within 10 minutes after operation starts 1 10 z 3 WAY ECO i SYSTEM 4 Special Controls Control Functions In addition to ordinary heating and cooling operation this system also includes the following 3 types of special controls for control of the system as a whole 1 Tube refrigerant recovery control 2 System refrigerant oil recovery control 3 Defrost control 4 1 Tube Refrigerant Recovery Control This control recovers refrigerant from the tubing when the microcomputer is initialized immediately after power ON after warning output occurs and after a set amount of time has elapsed standard 60 minutes when all outdoor units are stopped This control is intended to recover refrigerant if refrigerant has accumulated somewhere in the tubing when the units have been stopped for long periods as well as to compensate for tubing thermal loss during heating start and is also used for oil recovery 1 Control when the outdoor unit heat exchanger is acting as a condenser when all units are in Cooling mode or at start of mixed operation when the cooling load is high Control time 60 seconds Outdoor units All outdoor units operate at maximum horsepower rl con
131. nge if higher unit numbers do not exist Pressing the button switches the display immediately to the next higher level even if 10 seconds have not passed EH The total compressor operating time is displayed in 1 hour units using 8 digits e When the first 4 digits are displayed the bottom dot of the colon is lit Figure A e When the last 4 digits are displayed the colon points are not lit Figure B e The display of the first 4 and last 4 digits changes automatically every 10 seconds It can ees button also be changed by pressing the 10 lt Total compressor operating time gt A and B are displayed alternately NOTE The example here 0000 0062 indicates 62 hours With the outdoor unit maintenance remote controller when connected to the outdoor unit the unit remote controller check functions will not operate eee 3 WAY ECO i SYSTEM 4 Monitoring Operations Outdoor Unit Maintenance Remote Controller Display the indoor unit and outdoor unit sensor temperatures lt Operating procedure gt Press and hold the A CHECK button and buttons simultaneously for 4 seconds or longer to switch to temperature monitor mode During temperature monitoring is lit The display and operations are the same as when monitor mode is started from the unit remote controller Press
132. nit in Cooling mode for 10 to 20 minutes more 4 Fully close the suction line 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 8 Do each connection quickly to prevent air from entering the tubing Remaining refrigerant may create internal pressure therefore care should be CAUTION taken when connecting the hoses 6 Recover the remaining refrigerant from the indoor unit using the refrigerant recovery unit Ball valve separately purchased Se Service port NOTE Suction tube 1 Outdoor i To determine completion of refrigerant unit Discharge tube i i instructions that side poa recovery follow the instructions tha lig ldiube 2 came with the refrigerant recovery unit Solenoid Solenoid valve kit valve kit Refrigerant recovery Refrigerant recovery cylinder Indoor unit Fig 8 A Bl 3 WAY ECO i SYSTEM 5 Recovering Refrigerant Outdoor Unit Repair Procedures 5 2 3 Refrigerant recovery procedures 2 for indoor unit with no ball valve Refrigerant in all indoor units and the refrigerant tubing circuit must be pumped into the outdoor unit The maximum refrigerant storage capacity per a single outdoor unit is approx 15kg Thus in order to collect all refrigerant from the system a separate refrigerant recovery unit is necessary Foll
133. ns system alarm has occurred Automatic backup mode is not engaged in order to avoid causing secondary damage case 3 WAY ECO i SYSTEM 5 Blinking Inspection Display Trouble Diagnosis Blinking inspection display 2 compressor magnet SW seizing detection Alarm code Blinking inspection display Alarm meaning Compressor magnet SW seizing detected Status Although an outdoor unit exists where the outdoor unit fan is running no compressors in the system are operating yy Because the fan is running only at the outdoor unit where seizing was detected check the corresponding outdoor unit The fan may also run on its own when fan cracking prevention control is in effect or when snowfall sensor input is present Therefore monitor for approximately 10 minutes if the outdoor unit fans are operating at multiple units Alarm conditions Current is detected in the CT circuit when the compressor is stopped 1 This control is not engaged for the first 30 seconds after the compressor turns ON gt OFF 2 For 1 minute following the first 30 seconds after the compressor turned ON gt OFF the threshold for the detected current is 10 A or more continuing for 2 seconds 3 All times other than the above e If the low pressure SW has not activated the threshold for the detected current is 7A or more continuing for 5 seconds e If the low pressure switch has activated the threshold for the detected current is 7A or more continuing for 2 seconds
134. nt 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 control valve connector The connector is normal if all results pin 5 pin 1 pin 5 pin 3 pin 6 pin 2 pin 6 pin 4 are approximately 4622 If the results are OQ or co replace the coil e MOV2 Measure the voltage between plug pin 5 and pins 1 through 4 at the CNO16 connector 6P RED 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 control valve connector The connector is normal if all results pin 5 pin 1 pin 5 pin 3 pin 6 pin 2 pin 6 pin 4 are approximately 460 If the results are OQ or o replace the coil e MOV3 Measure the voltage between plug pin 5 and pins 1 through 4 at the CN229 connector 6P BLK 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 control valve connector
135. nt mode lt Reference gt General Guidelines for Insufficient Gas and Overcharge Judgment in automatic judgment mode can be problematic in some cases Therefore the following guidelines are provided for general judgment of the refrigerant amount e Symptoms of insufficient gas Cooling There is an indoor unit where the position of the electronic control valve is much higher open by operation 300 pulses or more than it was at start and the difference E3 E1 at that indoor unit is large 15 C or more Heating There is an outdoor unit where the position of the electronic control valve is much higher open by operation 300 pulses or more than it was at start and the difference Liquid temp Gas temp at that outdoor unit is large 15 C or more e Symptoms of overcharge Cooling The high pressure sensor temperature is 57 C or higher and the difference Pressure sensor operation temp Liquid temp at that outdoor unit is large 15 C or more Heating There is an indoor unit where the position of the electronic control valve is much higher open by operation 300 pulses or more than it was at start and the difference Pressure sensor temp E3 at that indoor unit is large 25 C or more These are only guidelines therefore the judgment may vary depending on the installation conditions load characteristics and other elements 3 WAY ECO i SYSTEM Outdoor Unit Repair Procedures 2 OUTDOOR UNIT REPAIR P
136. nt reason The purpose of this alarm is to facilitate identification of the problem in this case F06 F23 F25 Alarm O E A Alarm meaning Gas temperature sensor MOnBIe at outdoor heat exchanger 1 Gas temperature sensor trouble at A dor hat enhango Ges emperalo senor rouble al cutter feat exchanger gt A D step is 1014 steps or sch open ae Probable cause Sensor malfunction including connector PCB malfunction Measure the sensor resistance Check that the sensor is operating normally Use a remote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer 1 2 Check 1 2 F07 F24 F26 Alarm Alarm code F07 F24 F26 7 outdoor heat exchanger 2 a are sensor trouble at outdoor heat exchanger 3 a A D step is 1014 e or as open Bis la PCB malfunction the microcomputer Check 1 Measure the sensor resistance Check that the sensor is operating normally 2 Use a remote controller monitor or PC monitor to check the temperature that is recognized by e 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis F08 Alarm a TTPO eo a Alarm meaning Outdoor air temperature sensor trouble Alarm conditions 1 A D step is 10 steps or less short circuit 2 A D step is 1014 steps or more open circuit 1 Sensor malfunction including connector 2 PCB malfunction 1 2 Check 1 Measure the sensor resistance Check that the sensor is operating normally
137. ntenance remote controller 5 1 Refrigerant Recovery Procedures from outdoor unit 1 Turn off the power of the outdoor unit beforehand at power mains 2 Fully close each service valve on the suction tube discharge tube liquid tube and the balance tube of the outdoor unit 3 Connect the outdoor unit s high pressure and low pressure outlet ports with the Hi and Lo sides of the manifold gauge valves using hoses Fig 7 The remaining refrigerant in the faulty outdoor unit may create internal pressure CAUTION Before connecting hoses be sure to confirm that each of the manifold gauge valves is tightly closed Note that the connection ports employ Schrader type push to release valves 4 Connect the manifold gauge valves refrigerant recovery unit and recovery cylinder using hoses To avoid the entry of air into the refrigerant tubing carry out this connection work carefully Fig 7 For detailed procedures such as connecting the refrigerant recovery unit with the CAUTION recovery cylinder and methods used for recovery follow the specific instructions that came with the refrigerant recovery unit 5 Locate the AP Air Purge pins on the control PCB in the faulty outdoor unit and short them using the clips of the jumper wire Then restore electrical power to the outdoor unit By short circuiting the AP pins each solenoid valve in the outdoor unit is forcibly CAUTION opened as soon as power comes on which releases a
138. ntroller Servicing Functions Trouble Diagnosis Sensor Temperature Relationship Table Locationwhere sensor Sensor address Sensor type Sensor address Sensor type is installed Remote controller temperature Discharge temperature sensor Indoor unit intake temperature s Indoor unit heat exchanger 19 Indoor unit electronic expansion temperature E1 L valve position Indoor unit heat exchanger temperature E3 Unit Unit Unit Unit Unit Unit No 1 No 2 No 3 No 1 No 2 No 3 yn Discharge temperature 1 7 3 51 Discharge temperature 3 Ob co Yb Discharge temperature 2 gC up High pressure sensor temperature Heat exchanger gas 1 Outdoor unit ce uE Heat exchanger liquid 1 cr 4e Heat exchanger gas 2 10 30 50 Heat exchanger liquid 2 5 i Outside air temperature e 3 WAY ECO i SYSTEM 4 3 WAY ECO i Alarm Codes Trouble Diagnosis With types 0705 0905 and 1155 the INV compressor is compressor 1 and the constant speed compressor is compressor 2 With types 1305 and 1405 the INV compressor is compressor 1 and the constant speed compressors AC1 AC2 are compressors 2 and 3 E06___ Outdoor unit failed to receive serial communication signals from indoor unit 5 9 Automatic address setting start is prohibited E15 Automatic address setting alarm too few units E20 5 11 5 11 5 11 E24 Outdoor unit INV failed to receive communications from another outdoor 5 10 unit constant spe
139. nut Brazed y locations 2 p_i its gt Foo Cushioning rubber Temporary fastening Crankcase IN i Washer 1 bolts 2 inner legs heater 1 Rubber washer 1 Cushioning rubber Inner 1 leg Fig 21 Fig 22 3 WAY ECO i SYSTEM 10 Com pressor Outdoor Unit Repair Procedures B Replacing the constant speed compressor 1 Compressor 2 on remote controller alarm display E Removal 1 Connect the manifold gauge to the high and low pressure outlet ports at the outdoor unit where the compres sor will be replaced Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement 2 Follow the instructions in 1 Removing Panels and 2 Removing Electrical Component Box and Duct and remove the corresponding parts from the outdoor unit where the compressor will be replaced O Remove the cap at the compressor terminal plate Disconnect the power terminal Remove the crankcase heater as Remove the bolts 3 locations washers and spacers 1 each at the 3 locations shown in the figure The compressor rear leg is not anchored 6 Prepare to disconnect the 3 brazed locations shown in the figure Constant speed compressor left side Brazed locations 3 Remove discharge sensor yy y Protect the oil equalizer tube connectors Bolt Washer 1 Rubber washer 1 1 each at the 3 locations z wi y PRAT HY Crankcase heate
140. occurs 4 times then an alarm occurs After a compressor has stopped that compressor will not operate until the temperature has dropped to or below the start prohibit temperature Discharge temperature protection list Compressor No Compressor 2 Compressor 3 Type Constant speed Constant speed Stop temp 105 105 105 Start prohibit temp 90 90 90 P03 2 Discharge sensor trouble detection control An alarm occurs if the discharge temperature remains abnormally high when the system has been stopped for 60 minutes In this case possible causes include sensor failure and compressor overheating caused by an insufficient level of refrigerant The alarm also occurs if the sensor temperature is at or above the abnormal temperature 80 C when 20 min utes have passed after the compressor stopped In this case it is possible that the discharge temperature from a different outdoor unit is being detected due to an error in the installation of the discharge thermistor Discharge sensor failure list Type Inverter Constant speed Constant speed Stop temp