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3. 1 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW OCH576 14 4 3 3 PUMY P125VKM1 BS PUMY P125YKM1 BS cooling Before calculating the sum of total capacity of indoor units please convert the value into the kW model capacity following the formula on 4 1 1 Method for obtaining system cooling and heating capacity 18 0 16 0 14 0 12 0 10 0 Capacity kW 8 0 6 0 4 0 2 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 4 0 3 5 3 0 2 5 Input kW 2 0 1 5 1 0 0 5 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 20 0 15 0 10 0 ca Current A N 3 lt 5 0 7 T 0 0 l Total capacity of ind
4. 0 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW Current A 20 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW OCH576 16 4 3 5 PUMY P140VKM1 BS PUMY P140YKM1 BS cooling Before calculating the sum of total capacity of indoor units please convert the value into the kW model capacity following the formula on 4 1 1 Method for obtaining system cooling and heating capacity 20 0 18 0 16 0 14 0 12 0 10 0 Capacity kW 8 0 6 0 4 0 2 0x 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW 5 0 4 5 4 0 3 5 3 0 2 5 Input kW 2 0 1 5 1 0 0 520 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW 25 0 ENS m PEERPPTERE PITITEPPPPERETS 15 0 Z 230V e Current A N 3 lt 10 0 HH H zT 5 0
5. CN2 Connect to the outdoor multi controller circuit board CN2 Transmitting signal to outdoor multi controller circuit board 0 5 V DC Zero cross signal 0 5 V DC 18 V DC 16 V DC 16 V DC N2 CN52C CNDC Power Connect to the smoothing 52C driving signal 280 380 V DC 9 modul capacitor CB Connect to the outdoor Connect to the outdoor E2 E3 multi controller circuit multi controller circuit Connect to the elec board CN52C board CNDC trical parts box en eb HAND 4 o LI U V W P2 DCL1 DCL2 El E4 CNAC1 Connect to the compres Connect to the smooth Connect to DCL Connect to the 230 V AC Voltage of 230 V AC is sor MC Voltage among ing capacitor CB electrical parts Connect to the M NET input Connect to the phases 10 180 V AC box power circuit board CN1 terminal block TB1 CNAC2 230 V AC OCH576 Connect to the outdoor multi controller circuit board CNAC 119 j Outdoor power circuit board Brief Check of POWER MODULE PUMY P112YKM1 BS Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc PUMY P125YKM1 BS If they are short circuited it means that they are broke
6. Indoor unit V1 V2 Type 1 SEZ KD VA PCA RP KAQ PLA ZRP BA UK 19 8 Type 2 PEAD RP JAQ L UK 26 9 Type 3 MLZ KA VA SLZ KA VAQ L 3 9 9 ER Type 4 MSZ FH VE MSZ SF VE MSZ EF VE MSZ SF VA 68 I MSZ GF VE Type5 MFZKJ VE 74 Type 6 Branch box PAC MK BC 5 1 3 0 Connect to Connection kit PAC LV11M Indoor unit V1 V2 Type 1 MSY EF VE MSY GE VA MSY GH MSZ GE VA 68 MSZ SF VA MSZ SF VE MSZ EF VE MSZ FH VE Type2 MFZ KJ VE 74 24 Type 3 Connection kit PAC LV11M 3 5 Indoor unit V1 V2 Fa PMFY VBM PLFY VBM PEFY VMS1 PCFY VKM PKFY YP VHM PKFY VKM PFFY VKM 198 Type2 PLFY VCM 9 9 24 Type 3 PKFY VBM 3 5 Type 4 PEFY VMA 38 1 6 Sample chart Type 6 PLFY VLMD PEFY VMH PEFY VMR PDFY VM 0 0 PFFY VLEM PFFY VLRM PWFY VM 6000 C Multiple of tripping current at tripping time 0 01s Please pick up C from the tripping characteristic of the breaker Example of F2 calculation Condition PLFY VBM x 4 PEFY VMA x 1 C 8 refer to right sample chart F2 19 8 x 4 8 38 x 1 8 14 65 16 A breaker Tripping current 8 x 16 A at 0 01 s 4 Current sensitivity is calculated using the following formula G1 V2 x Quantity of Type1 V2 x Quantity of Type2 V2 x Quantity of Type3 V2 x Quantity of Others V3 x Wire length km Tripping Time s G1 Current sensitivity 30 or less 30 m
7. Total piping length A B C D E a b c d e f g h i j S300 m Farthest piping length L1 A E a or A B C e 85m Permissible Farthest piping length Via Branch box L2 A B C D j S 80m length Piping length between outdoor unit and branch box A B C D 55m One way Farthest piping length from the first joint B C D or B C eS 30 m Farthest piping length after branch box jS 25m Total piping length between branch boxes and indoor units f g h i j lt 95 m Permissible In indoor outdoor section H H lt 50 m In case of outdoor unit is set higher than indoor unit height H lt 40 m In case of outdoor unit is set lower than indoor unit difference In branch box indoor unit section h1 hi 15m One way in each indoor unit h3 h3 12m Number of bends lt 12m Branch box should be placed within the level between the outdoor unit and indoor units W Selecting the Refrigerant Branch Kit Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Branch header 4 branches Branch header 8 branches CMY Y64 G E CMY Y68 G E W Select Each Section of Refrigerant Piping 1 Refrigerant Piping Diameter In Section From Outdoor Unit to Branch box or Branch header Out door Unit Piping Diameter Model Piping Diameter
8. Power Suppl Zz Unit Examples of Transmission Cable Wiring Group Group Group Shielded Wire Sub MA Remote Controller Address example Always use shielded wire when making connections between the outdoor unit OC and the M NET control indoor unit M IC as well for all OC OC and IC IC wiring intervals Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on the transmission cable terminal block of the M NET control indoor unit M IC Connect terminals M1 and M2 on the transmission cable terminal block of the M NET control indoor unit M IC that has the most recent address within the same group to the terminal block on the M NET remote controller M NET RC Connect together terminals M1 M2 and terminal S on the terminal block for centralized control TB7 for the outdoor unit OC DO NOT change the jumper connector CN41 on outdoor multi controller circuit board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the termi nal S on the power supply unit with the earth g Set the address setting switch as follows Unit Range Setting Method M IC Main 01 to 50 Use the smallest address wi
9. Branch Box Prohibited items Power Supp TM Uni System controller Plural indoor units cannot be operated by a single remote controller Different refrigerant systems cannot be connected together M NET Remote controller cannot be connected to this system OCH576 39 UU F Example of a system using Branch Box A Control indoor unit and M NET Control indoor unit Branch Box HE E T bal fe a Si s E gt D O o gt gt gt G Z i E Branch Box Examples of Transmission Cable Wiring System controller D 9 Shielded wire Address example Always use shielded wire when making connections between the outdoor unit OC and the
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11. Yes Y Check whether the model selection switch is set correctly on the outdoor multi controller circuit board or not Y Are they set properly Turn the power OFF to check for looseness disconnection or converse phases of the compressor wiring Continue to the next page Open the stop valve liquid gas fully Check the power supply facility check for power supply open phase Set the model selection correctly OCH576 73 4210 eDiagnosis of defectives Compressor overcurrent interruption Chart 2 of 2 Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Continued from the previous page Are they connected properly Connect the compressor wiring U V and Check the operation of indoor outdoor fan motors Does it operate normally e Check for indoor outdoor short cycle Are those units short cycled os no short cycled short cycled gt W phase properly then turn the power back ON Check the DC fan motor Yes gt Disconnect the compressor wiring from the outdoor power circuit board then check the voltage among each phases U V and W during test run SW7 1 ON Are the voltage among the phase
12. Is the voltage normal value Replace the thermistor Is it free from any trace of over heating or burning Disconnect the indoor LEV wiring and check the resistance Y Replace the outdoor multi controller circuit board Is there a resistance detected Yes Replace the indoor LEV Y Replace the indoor controller board OCH576 49 1300 Low pressure trouble Chart 1 of 3 63L equipped model 1 Low pressure 63L is in operation Abnormal if 63L operates under 0 03MPa during compressor operation 63L Low pressure switch LEV Electronic expansion valve SV1 Solenoid valve TH7 Thermistor Ambient Defective operation of stop valve not fully open Clogged or broken pipe Malfunction or locked outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger amp Remote controller transmitting error caused by noise interference Contact failure of outdoor multi controller circuit board connector Defective outdoor multi controller circuit board Short cycle of indoor unit Decreased airflow clogged filter or dirt on indoor unit Malfunction or locked indoor fan motor Decreased airflow caused by defective inspection of outdoor temperature thermistor It detects lower temperature than actual temperature Indoor LEV performance fa
13. Minimum Wire Cross sectional area mm TENA Model Power Supply Main Cable Branch Ground Breaker for Wiring 1 Breaker for Current Leakage N 220 230 240 V 50 Hz Outdoor Unit P112 140V N 220 V 60 Hz 5 5 6 5 5 6 32A 32 A 30 mA 0 1 sec or less P112 140Y 3N 380 400 415 V 50 Hz 1 5 1 5 16A 16 A 30 mA 0 1 sec or less 1 A breaker with at least 3 0 mm contact separation in each poles shall be provided Use non fuse breaker NF or earth leakage breaker NV Minimum wire thickness mm d Local switch A Breaker for wiring Total operating current of the indoor unit Main Cable Branch Ground Ground fault interruper 2 Capacity Fuse NFB FO 16 A or less 3 1 5 1 5 1 5 20 A current sensitivity 4 16 16 20 F0 25 A or less 3 2 5 2 5 2 5 30 A current sensitivity 4 25 25 30 FO 32 A or less 3 4 0 4 0 4 0 40 A current sensitivity 4 32 32 40 Apply to IEC61000 3 3 about max permissive system impedance 2 The Ground fault interrupter should support inverter circuit The Ground fault interrupter should combine using of local switch or wiring breaker 3 Please take the larger of F1 or F2 as the value for FO F1 Total operating maximum current of the indoor units x 1 2 F2 V1 x Quantity of Type1 C V1 x Quantity of Type2 C V1 x Quantity of Type3 C V1 x Quantity of Others C Connect to Branch box PAC MK BC
14. Remain 2 08 a 1 Fl F2 F3 F4 OOO e 8 1 2 Special Function Operation and Settings for M NET Remote Coniroller It is necessary to perform group settings and paired settings at making group settings of different refrigerant systems multiple outdoor unit A Group settings Enter the indoor unit controlled by the remote controller check the content of entries and clear entries etc B Paired settings Used to set the linked operation of a Lossnay unit 1 Entering address Follow the steps below to enter the addresses of the indoor unit using the remote controller a Group settings Turning off the remote controller Press the ON OFF button to stop operation the indicator light will go off e Changing to indoor unit address display mode If the FILTER and Sx buttons on the remote controller are pressed simul taneously and held for 2 seconds the display shown in Figure 1 will appear e Changing address Press the temperature adjustment C4 CO buttons to change the displayed address to the address to be entered Entering the displayed address Press the TEST RUN button to enter the indoor unit with the displayed address The type of the unit will be displayed as shown in Figure 2 if entry is completed normally If a selected indoor unit does not exist an error signal will be displayed as shown in Figure 3 When this happens check whether the indoor unit actually exists and perform entry
15. v Is there contact failure gt gt Yes gt V No Power supply check Remove the connector CNF1 2 Measure the voltage in the outdoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc 310 340 V DC Y Voc between 1 and 4 of the fan connector Voc 280 340 V DC when ACTM stops 350 V DC when ACTM is operating V TEST POINT Vcc between 5 and 4 of the fan connector Vcc 15 V DC v Is the voltage normal Yes gt C Replace the fan motor V No y Yes OK Check the operation of fan gt END Replace the outdoor mult controller circuit board Y NG OK Replace the outdoor multi controller circuit board Check the operation END V NG Replace the fan motor OCH576 116 j 8 8 HOW TO CHECK THE COMPONENTS lt Thermistor feature chart gt Low temperature thermistors Thermistor HIC pipe TH2 Thermistor Outdoor liquid pipe TH3 Thermistor Suction pipe TH6 Thermistor Ambient TH7 Thermistor RO 15 kQ 3 96 B constant 3480 2 1 1 Rt 15exp 3480 2734 278 oc 15 kQ 30 C 4 3 kQ 10 C 9 6 kQ 40 C 3 0 KQ 20 C 6 3 kQ 25 C 5 2 kQ Medium temperature thermistor Only YKM Thermistor Heat sink TH8 Thermistor R50 17 KQ 2 96 B constant 4170 3 96 1 1 Rt 217exp 4170
16. Abnormal if the data of unit transmission processor were not normally Accidental disturbance such as noise or lightning transmitted surge Abnormal if the address transmission from the unit processor was not Hardware malfunction of transmission processor normally transmitted eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Turn the power OFF of indoor outdoor unit Fresh Master Lossnay and remote controller simultaneously for 2 minutes or more then turn the power back ON gt Replace the controller Defect of error source controller Does it operate normally Yes There is no abnormality on the AC unit It might be caused by an external noise so check the transmission line to remove the factor s Y OCH576 94 6607 No ACK error Chart 1 of 4 D Represents a common error detection An abnormality detected by the sending side controller when receiving no ACK from the receiving side though signal was once sent The sending side searches the error in 30 seconds interval for 6 times continuously The previous address unit does not exist since the address switch was changed while in electric continuity status Decline of transmission voltage signal caused by tolerance over on transmission line At the furthest end 200 m On remote controlle
17. Model Piping Diameter mm to Branch box or Branch header A to E 2 Sections From Branch Each 1 Section From Outdoor Unit PUMY P112 PUMY P125 PUMY P140 Liquid Line 49 52 15 88 Gas Line box or Branch header to Indoor Unit a to k Select the size from the table to the right Indoor Unit Indoor Unit Piping Diameter Section of Piping 2 Refrigerant Piping Diameter In Section From Branch box or Branch header to Indoor unit series Model number A Liquid pipe B Gas pipe CityMulti 15 to 50 63 to 140 6 35 9 52 12 7 15 88 M series or 50 S series 60 15 to 42 6 35 46 35 6 35 9 52 9 52 12 7 15 88 15 88 71 to 80 P series 35 50 60 to 100 6 35 9 52 12 7 15 88 Note When connecting the CONNECTION KIT PAC LV11M J and an M series indoor unit refer to the installation manual for the CONNECTION KIT when selecting the pipe size and piping length m Additional refrigerant charge OCH576 Refer to the same section in the previous page 142 a a _ _c sss 10 3 PRECAUTIONS AGAINST REFRIGERANT LEAKAGE 10 3 1 Introduction R410A refrigerant of this air conditioner is non toxic and non flammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious To prevent possible injury the rooms should be large e
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19. Control panel Operation procedure Turn on the main power supply of all units at least 12 hours before test run HO appears on display panel for 3 min 12 hours later press TEST RUN button twice to perform test run TEST RUN appears on display panel Press OPERATION SWITCH button to make sure that air blows out Select Cooling or Heating by OPERATION SWITCH button to make sure that cool or warm air blows out Press Fan speed button to make sure that fan speed is changed by the button Press AIR DIRECTION button or LOUVER button to make sure that air direction is adjustable horizontal downward upward and each angle Check outdoor fans for normal operation Check interlocked devices like ventilator for normal operation if any This is the end of test run operation Press ON OFF button to stop and cancel test run e eo8g eo ol8muwo Notes 1 If check code appears on remote controller or remote controller malfunctions refer to 8 1 3 Countermeasures for Error During Run 2 During test run operation 2 hour off timer activates automatically and remaining time is on remote controller and test run stops 2 hours later 3 During test run the indoor liquid pipe temperature is displayed on remote controller instead of room temperature 4 Depending on a model This function is not available appears when air direction button is pressed However this is not malfunction OCH576 42
20. Same as CNF1 2 21S4 4 way valve Vsp CNF1 2 Voc TEST POINTG CNDC Vcc TEST POINT Voltage between pins of Connect to fan motors Voltage between pins of C510 310 340 V DC Y Voltage between pins of C515 and C516 310 340 V DC Y 310 340 V DC Y 310 350 V DC V C82A 15 V DC 0 V DC when stopped 310 350 V DC V 310 350 VDC V O 4 9 Same as CNF1 2 1 6 5 V DC when operated 15 V DC Same as CNF1 2 O Same as CNF1 2 0 6 5 V DC 15 V DC when stopped 0 15 V DC pulse when operated OCH576 118 pT Outdoor power circuit board PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS CN4 Connect to the outdoor multi controller circuit board CN4 Brief Check of POWER MODULE Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc If they are short circuited it means that they are broken 1 Check of POWER MODULE Check of DIODE circuit BLU SI L1 DN LS I IN1 Check of IGBT circuit L2 IN1 Check of INVERTER circuit PJ U LPJ LVJ LP J LW IN1 1UJ NNT IVI INTI W Note The marks R S L1 L2j IP IN1 UJ V and W shown in the diagram are not actually printed on the board
21. Y Is the correct kind of transmission in used gt Is it ge Iti refri t When operating in a single refrigerant s ce ingin multicemgeran gt system single indoor unit the controller of System the displayed address attribute is defective When operating in a multi refrigerant system 2 or more outdoor units check if any of the indoor unit stores non existing address information Delete the unnecessary address using Is the address information correct gt a e setting function on the remote controller Only for operating in a system with the Fresh Master Lossnay is connected or in a multi refrigerant system with group setting is set Replace the controller board which the displayed address attribute belongs to Defective outdoor controller board repeater circuit on the outdoor unit is suspected Does it operate normally gt Replace the outdoor controller board one by one then check for normal operation Yes gt Complete OCH576 98 Check code 6608 No response frame error Abnormal if receiving no response command while already received ACK The sending side searches the error in 30 seconds interval for 6 times continuously D Continuous failure of transmission due to noise etc Decline of transmission voltage signal caused by tolerance over on transmission line At the
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23. gt Refer to the diagnosis of check code lt 1100 gt Is the drain level Yes gt Refer to the diagnosis of check code lt 2502 gt Check the drain discharge system for Dirty drain pan needs to be cleaned unusually high e Continue to the next page Clogged drain pump Clogged or reverse connection of drain pipe OCH576 63 2500 eDiagnosis of defectives Water leakage Chart 2 of 2 Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Continued from the previous page els there an adhesion of water drops on the drain sensor Yes els there a difficulty when pulling up the float switch manually Drain sensor Disconnect the connector for drain sensor CN31 and short circuit between pins 1 2 on the indoor controller board then turn ON the emergency operation Switch SWE Float switch Disconnect the connector for float switch CN4F and short circuit between pins 3 4 on the indoor controller board then turn ON the emergency operation switch SWE Is the check code Solve the problem gt lt 2500 gt still displayed No abnormality The cause might be that the drain level was unusually high Restore the controller board and operate the unit gt Replace the indoor controller
24. Abnormal if stop valve is blocked during cooling operation Abnormal when both of the following temperature conditions are satisfied for 20 minutes or more during cooling operation 1 TH22j TH21j 2 2 C 2 TH23j TH21j 2 2 C Note For indoor unit the abnormality is detected if an operating unit satisfies the condition D Outdoor liquid gas valve is blocked Mulfunction of outdoor LEV LEV1 blockage TH21 Indoor intake temperature thermistor TH22 Indoor liquid pipe temperature thermistor TH23 Indoor gas pipe temperature thermistor LEV Electronic expansion valve eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Open the outdoor stop valve liquid gas Is the outdoor stop valve liquid gas fully open fully Disconnect the outdoor LEV wiring to check the resistance Is there a resistance detected Replace the outdoor LEV Yes gt Replace the outdoor multi controller circuit board OCH576 61 Check code 1508 4 way valve trouble in heating mode Abnormal if 4 way valve does not operate during heating operation Abnormal when any of the following temperature conditions is satisfied for 3 min or more during heating operation 1 TH22j TH21j 2 10 C 2 TH23j TH21j 2 10 C 3 TH22j 53 C 4 TH23j 23 C
25. Check an internal pressure of the refrigerant circuit Check the refrigerant circuit and refill refrigerant after repairing the leakage Is the detected internal pressure normal The detected pressure in 63LS can be displayed by an operation of SW1 on the outdoor multi controller circuit board Check the detected pressure in 63LS then Swi Setting Unit compare it with the internal pressure Se E E 12345678 Is the detected pressure normal gt Replace the 63LS Replace the outdoor multi controller circuit board Y OCH576 88 5300 Primary current error Abnormal if the detected current sensor input value primary current D Decrease trouble of power supply voltage during compressor operation is outside the specified range Disconnection of compressor wiring Input sensor trouble on outdoor power circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the input current at the time of abnormal stop The power supply voltage is decreased or abnormal Check the power supply facility Does it satisfy the condition 1 in the lower right Y Yes Applicable only for P112 125 140V model ds ER y Condition 1 Model Error detecting condition 34A or more
26. Note For indoor unit the abnormality is detected if an operating unit satisfies the condition D 4 way valve failure 9 Disconnection or failure of 4 way valve coil Clogged drain pipe Disconnection or loose connection of connectors amp Malfunction of input circuit on outdoor multi controller circuit board amp Defective outdoor power circuit board TH21 Indoor intake temperature thermistor TH22 Indoor liquid pipe temperature thermistor TH23 Indoor gas pipe temperature thermistor eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is the connector for outdoor multi Remedy Reconnect the connector or connect it controller circuit board or 4 way valve Yes Check the voltage and appearance of the outdoor multi controller circuit board Is the detected voltage normal coil disconnected or loose tightly Disconnect the connector for outdoor multi controller circuit board or 4 way valve coil to check the resistance Is there a resistance detected gt Replace the 4 way valve Yes Y Replace the outdoor multi controller circuit Is it free from any trace of over heating or burning OCH576 62 board Check code 2500 Water leakage Chart 1 of 2 Abnormal if drain sensor or float switch d
27. Turn the power OFF of indoor outdoor unit Fresh Master Lossnay and remote controller simultaneously for 2 minutes or more then turn the power back ON There is no abnormality on the AC unit Is the abnormality reproduced S Check the address switch on the source of abnormality It might be caused by an external noise so check the transmission line to remove the factor s gt Set the address properly then perform the Is it set properly p Check the transmission line for a disconnection and looseness on the terminal board and connector The transmission line is connected procedure 1 Connect the transmission line properly properly Check the transmission line whether it exceeds the tolerance or not It is not exceeding the tolerance e Check whether the correct kind of transmission line is used or not Continue to the next page then perform the procedure 1 Correct it within the tolerance then perform the procedure 1 OCH576 97 6607 No ACK error Chart 4 of 4 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Apply the correct kind of transmission line then perform the procedure 1
28. d wis viva i Branch Box TBSA TB15 N S A IC 06 Examples of Transmission Cable Wiring Power Suppl Re Unit l System controller vi MJS Shielded wire Address example Always use shielded wire when making connections between the outdoor unit OC and the Branch Box as well for all OC OC wiring intervals Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on the transmission cable terminal block TB5 of the Branch Box Connect terminals 1 and 2 on the transmission cable terminal block TB15 of the A control indoor unit A IC to the terminal block on the MA remote controller MA RC d Connect together terminals M1 M2 and terminal S on the terminal block for centralized control TB7 for the outdoor unit OC e DO NOT change the jumper connector CN41 on outdoor multi controller circuit board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the termi nal S on the power
29. 16 6 lt Calculation example gt Additional refrigerant charge 19 0 50 0 1000 49 4000 3 0 kg At the conditions below 40 x 3 0 6 1 kg rounded up 138 Note Pipe re branching after the header branching is not possible Method of Combined Branching of Lines and Headers Connection Examples Connecting to 5 Indoor Units Outdoor unit First branching branching joint Branching joint Indoor unit D Branching header Blind caps Total Piping Length A B C a b c d e is 300 meters or less Farthest Piping Length L A B b is 150 meters or less Farthest Piping Length After First Branch B b is 30 meters or less Permissible High High Low Difference in Indoor Outdoor Section H 50 meters or less If the outdoor unit is lower 40 meters or less Low Difference High Low Difference in Indoor Indoor Section h 15 meters or less W Selecting the Refrigerant Branch Kit Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Permissible Length Branch Joint Branch Header 4 branches Branch Header 8 branches CMY Y62 G E CMY Y64 G E CMY Y68 G E W Select Each Section of Refrigerant Piping 1 Refrigerant Piping Diameter In Section 2 Refrigerant
30. Chart 1 of 2 Abnormal if overcurrent of compressor is detected within 30 seconds after DClosed stop valve the compressor starts operating Decrease of power supply voltage 8 Looseness disconnection or converse of compressor wiring connection Model selection error upon replacement of indoor controller board Defective compressor Defective outdoor power circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the stop valve Is the stop valve liquid gas fully open S Check the power supply voltage Is the power supply voltage normal gt Ensure power supply from the facility S Turn the power OFF to check for looseness disconnection or phases of the compressor wiring Is it connected properly Check whether the model selection switch is set correctly on the outdoor multi controller circuit board or not Continue to the next page Y Open the stop valve liquid gas fully Connect the wiring properly then turn the power back ON OCH576 71 4100 Compressor current interruption Locked compressor Chart 2 of 2 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replac
31. Dirty drain pan needs to be cleaned 4 gt Clogged drain pump Clogged or reverse connection of drain pipe Float switch models 2502 Drain overflow protection Chart 2 of 2 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Continued from the previous page Is there a difficulty on the Solve the problem moving part when puling up HE gt Remove foreign substance such as dusts the float switch manually Replace if the moving parts does not work Is the resistance of float gt Replace the float switch switch normal Open Short Please refer to How to check the parts on indoor units service Disconnect the connector for manual float switch CN4F and short circuit between pins 3 4 on the indoor controller board then start cooling operation No abnormality Is the check code t The cause might be that the drain level was 2502 still displayed unusualy high Restore the float switch and operate the unit Y Yes Is the connector CNP Y connected properly Connect the connector CN4 properly Turn ON the emergency operation switch SWE Is 200 V AC output on the connector CNP gt Replace the indoor controller board Yes Y Check the volt
32. E 8 1 1 2 Test run for wired remote controller lt PAR 31MAA gt Select Service from the Main menu and press the button Cw Select Test run with the F1 or F2 button and press the 2 button MENU RETURN SELECT ON OFF Function buttons Fi F2 F3 F4 Service menu y2 gt Test run Input maintenance info Function setting Check Self check Main menu aa 7 Fl Fe F3 FA e 2 Select Test run with the F1 or F2 button and press the 7 button Test run menu gt Test run Drain pump test run Service menu Y Cursor EMEN l j Test run operation Test run Remain 2 88 Press the F1 button to go through the operation modes in the order of Pipe 28 Cool and Heat eege x v Se Cool mode Check the cold air blow off Fan Heat mode Check the heat blow off Cw Press the Q button and open the Vane setting screen Auto vane check Check the auto vane with the F1 F2 buttons Check the operation of the outdoor unit fan also Cw Press the 9 button to return to Test run operation Cw Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after 2 hours The function is available only for the model with vanes OCH576 43 m NND EN eo
33. IGBT Power Module ai EI E2 E3 E4 ConnectionTerminal Electrical Parts Box es EH eee CNS2C MULTI B Controller Circuit Board dd CN2 1 B RED SW1 Switch lt Display Selection gt TB3 WHT RED Lise Sw2 Switch lt Function Selections wi PER 2 SW3 Switch lt Test Run gt SW4 SwicheModelSelecions M2 Le i SW5 Switch lt Function Selection gt Ir L 4 wur CNDC 4 BLK SW6 Switch lt Function Selection gt TOINDOORUNIT PNK 3 ji a FH SW7 Switch Function Selection CONNECTING WIRES cB NL SW8 Switch lt Model Selection gt DC 30V Non polar so swag Switch lt Function Selection gt RED or SWU1 Switch lt Unit Address Selection unit digit gt TB7 SWU2 Switch lt Unit Address Selection tens digits m DW 2 CNS1 Connector Indoor Outdoor Branch Box M2 Outdoor Transmission Line gt CNS2 Connector lt Centralized Control Transmission Line gt 57 s i ss Connector lt Connection For Option gt FOR CENTRALIZED CN3D Connector lt Connection For Option gt Be 30V Non polar Hi CN3S Connector Connection For Option CN3N Connector Connection For Option JE FUSE1 CNS Connector lt Connection ForOptions 7j Bi LED1 LED2 LED lt Operation Inspection Display B2 FUSE LED3 LED lt Power Supply to Main Microcomputer gt F1 F2 Fuse lt T6 3AL250V gt P X501 505 Relay TO BRANCH BOX M NET P B M NET Power Circuit Board TBI TB1 ConnectionTerminal lt Electr
34. Malfunction of sending receiving circuit on indoor unit or Fresh Master The cause of displayed address and attribute is on Lossnay side OD An abnormality is detected when the indoor unit An abnormality detected by the indoor unit if receiving no ACK when the transmits signal to Lossnay while the Lossnay is indoor unit transmit signal to the Lossnay turned OFF Q While the indoor unit is operating with the other refrigerant Lossnay an abnormality is detected when the indoor unit transmits signal to the Lossnay while the outdoor unit with the same refrigerant system as the Lossnay is turned OFF or within 2 minutes after it turned back ON Contact failure of indoor unit or Lossnay transmission line Disconnection of transmission connector CN2M on indoor unit Malfunction of sending receiving circuit on indoor unit or Lossnay The controller of displayed address and attribute is not recognized D The previous address unit does not exist since the address switch was changed while in electric continuity status An abnormality detected at transmitting from the indoor unit since the Fresh Master Lossnay address are changed after synchronized setting of Fresh Master Lossnay by the remote controller OCH576 96 6607 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis No ACK error Chart 3 of 4 Procedure 1
35. When using a Branch Box example When power is supplied from the outdoor unit PUMY P VKM1 series N 220 230 240 V B1 B2 PUMY P YKM1 series 3N 380 400 415 V 50Hz Grounded OCH576 131 When power is supplied separately PUMY P VKM1 series e IN N 220 230 240 V 50 Hz PUMY P YKM1 series Grounded 3N 380 400 415 V 50Hz L1 L2 L3 N Switch Breakers for Wiring and Current Leakage Outdoor Unit Grounded Branch Box A Control Indoor Unit M NET Control Indoor unit Pull Box Schematic Drawing of Wiring When using a Branch Box and M NET control indoor unit example When power is supplied separately PUMY P VKM 1 series Pullbox N 220 230 240 V 50 Hz UN H JN 220 230 240 V 50 Hz N 220 V 60 Hz m AN 22 V 60 Hz PUMY P YKM1 series 3N 380 400 415 V 50 Hz LA L2 L3 N Grounded lt When power is supplied from the outdoor unit gt PUMY P VKM1 series N 220 230 240 V 50 Hz PUMY P YKM t1 series 3N 380 400 415 V 50 Hz Note The M NET control indoor unit cannot receive power supplied from an outdoor unit so provide it with power separately OCH576 132 9 2 2 Cross section area of Wire for Main Power and ON OFF capacities PUMY P112VKM1 BS PUMY P112YKM1 BS PUMY P125VKM1 BS PUMY P125YKM1 BS PUMY P140VKM1 BS PUMY P140YKM1 BS Cross sectional area of Wire for Main Power Supply and On Off Capacities
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37. Compressor Low pressure sensor 63LS Accumulator Compressor I Thermistor TH8 I lt Heatsink gt Thermistor TH2 HIC pipe gt Refrigerant lt Liquid pipe IHS LJ Service port eege Refrigerant flow in cooling Refrigerant flow in heating Capillary tube for oil separator 62 5 x 40 8 x L1000 Refrigerant piping specifications dimensions of flared connector Unit mm in Capacity Item Liquid piping Gas piping P15 P20 P25 P32 P40 P50 6 35 1 4 12 7 1 2 Indoor unit P63 P80 P100 P125 P140 9 52 3 8 15 88 5 8 Outdoor unit P112 P125 P140 9 52 3 8 15 88 5 85 Note When connecting the CONNECTION KIT PAC LV11M J and an M series indoor unit refer to the installation manual for the CONNECTION KIT OCH576 27 SS 7 3 REFRIGERANT SYSTEM DIAGRAM WHEN USING BRANCH BOX Condenser evaporator temperature thermistor TH5 or RT12 Room temperature thermistor TH1 or RT11 l Check valve Thermistor TH7 lt High pressure gt om lt Ambient gt Service port Strainer Ball valve Distributor Thermistor TH3 lt Outdoor liquid pipe gt Check valve lt Low pressure gt Thermistor TH6 lt Suction pipe gt High pressure L sensor 63HS Thermistor TH4 Compressor I Thermistor TH A E Gas pipe temperature I I I l I I I I l I I LE
38. Defective outdoor multi controller circuit board Short 170 3 C or more P112 125 140Y model Open 34 8C or less Short 102 C or more TH8 Thermistor Heat sink eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards ao s y P g The black square m indicates a switch position Diagnosis Remedy Is it a model with internal thermistor Check the wiring and connector connection of TH8 Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wiring connector properly Replace it in case of a breakage Disconnect the connector to check the resistance of TH8 using a tester Is the detected resistance normal gt Replace the thermistor The detected temperature of TH8 can be displayed by an operation of SW1 on the outdoor multi controller circuit board SW1 Setting Display on LED1 2 Unit ON Check a temperature of TH8 weie E c 12345678 Replace the outdoor multi controller circuit Is the detected temperature normal board Malfunction of thermistor circuit Yes No abnormality gt A connector contact failure is suspected OCH576 86 5201 High pressure sensor 63HS trouble When the detected pressure in the high press
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40. MITSUBISHI e A V ELECTRIC HES R410A SPLIT TYPE HEAT PUMP AIR CONDITIONERS October 2014 No OCH576 TECHNICAL amp SERVICE MANUAL lt Outdoor unit gt Model Name Service Ref e service manual PUMY P112VKM1 PU MY P112VKM1 describes technical data of the outdoor units only PUMY P125VKM1 PUMY P125VKM1 PUMY P140VKM1 PUMY P140VKM1 PUMY P112YKM1 PUMY P112YKM1 PUMY P125YKM1 PUMY P125YKM1 PUMY P140YKM1 PUMY P140YKM1 Salt proof model PUMY P112VKM1 BS PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS PUMY P140VKM1 BS PUMY P112YKM1 BS PUMY P112YKM1 BS PUMY P125YKM1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS PUMY P140YKM1 BS CONTENTS 1 SAFETY PRECAUTION 2 2 OVERVIEW OF UNITS rre 5 3 SPECIEICATIONS IB IET 9 A DATA 2 inn A A ERR EE 11 5 OUTLINES AND DIMENSIONS 22 6 WIRING DIAGRAM 24 7 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 26 8 TROUBLESHOOTING 42 9 ELECTRICAL WIRING a 131 10 REFRIGERANT PIPING TASKS 137 Model name 11 DISASSEMBLY PROCEDURE 144 indication OUTDOOR UNIT PARTS CATALOG OCB576 1 SAFETY PRECAUTION 1
41. Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Check the voltage on both ends of the branch connector Is 200 V AC output Check the branch connector for breakage or contact failure Yes Replace the drain pump OCH576 67 2502 Float switch models Drain overflow protection Chart 1 of 2 Drain pump DP Judge whether the sensor is in the water or in the air by turning the float switch ON OFF In the water Detected that the float switch is ON for 15 seconds In the air Detected that the float switch is OFF for 15 seconds GWhen the float switch remains to be turned ON for 3 minutes after detected to be in the water the drain pump is judged to be abnormal and 2502 will be displayed Note It takes 3 minutes and 15 seconds to detect abnormality including the time to judge to be in the water The unit continue to detect abnormality while turned off When the conditions below 1 2 and forced outdoor unit stop condition are met 1 Detected that liquid pipe temperature room temperature 10 C for 30 minutes constantly 2 Float switch detects to be in the water for 15 minutes constantly Note Before Forced outdoor unit stop condition is met the unit always detects above GThe indoor unit detecting above stops due to detecting abnormality the outdoor un
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44. 1 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes Avoid using thin pipes Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness Use the following tools specifically designed for use with R410A refrigerant Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc Store the piping indoors and both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging The following tools are necessary to use R410A refrigerant Tools for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Electronic refrigerant charging scale Gauge manifold Charge hose Gas leak detector Torque wrench If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction
45. 2734 323 oc 180 kQ 25C 50 kQ 50 C 17 KQ 70 C 8 kQ 90 C 4 kQ High temperature thermistor Thermistor Compressor TH4 Thermistor R120 7 465 KQ 2 96 B constant 4057 2 96 Rt 7 465exp 4057 In 273 t 393 20C 250 ku 70 C 34 KQ 30 C 160 kQ 80 C 24 kQ 40 C 104 kQ 90 C 17 5 kQ 50 C 70 kQ 100 C 13 0 kQ 60 C 48 kQ 110 C 9 8 kQ lt HIGH PRESSURE SENSOR gt Vout V OUTDOOR MULTI CONTROLLER CIRCUIT BOARD 5VDC WHT 13 Vout BLU 42 MICRO m PROCESSOR BLK y esHs GND 5 V DC Output Vout DC SENSOR PRESSURE MPa OCH576 50 Co N e Resistance kQ 10 20 10 0 10 20 30 40 50 Temperature C 200 150 100 Resistance kQ 50 25 50 75 100 110 125 C Temperature 500 400 300 Resistance kQ 100 25 50 75 100 120 Temperature C LOW PRESSURE SENSOR Vout V OUTDOOR MULTI CONTROLLER CIRCUIT BOARD 5V DC w RED Vout WHT A2 MICRO rN PROCESSOR SENSOR BLK 1 NX 63LS 5 V DC Output Vout DC GND l I l l I l l l 8 085 17 PRESSURE MPa ee 8 9 TEST POINT DIAGRAM Outdoor multi controller circuit board PU
46. 5 42 5 0 6 0 e Model type Ee MSZ FH25 35 50VE MSZ SF25 35 42 50VE MSZ GF60 71VE MSZ EF18 22 25 35 42 50VE MSZ SF15 20VA SEZ KD25 35 50 60 7 1 VA L PEAD RP50 60 71 100JA L Q UK SLZ KA25 35 50VA L PLA ZRP35 50 60 71 100BA UK PCA RP35 50 60 71 100KAQ Floor standing MFZ KJ25 35 50VE 1 way ceiling cassette MLZ KA25 35 50VA Note The lineup of a connectable indoor unit depends on a district areas country v PAC MK30BC 3 branches MAX 3 units Deluxe Standard Wall mounted Compact Low static pressure Middle static pressure 4 way 2 by 2 type ceiling cassette Standard Ceiling suspended Ceiling concealed PAC MK50BC 5 branches MAX 5 units Branch box Number of branches Indoor unit that can be connected Note A maximum of 2 branch boxes can be connected to 1 outdoor unit gt 2 branch pipe joint Optional parts In case of using 1 branch box No need Model name Connection method MSDD 50AR E flare MSDD 50BR E brazing Select a model according to the connection method Optional accessories of indoor units and outdoor units are available In case of using 2 branch boxes OCH576 mE CONS 2 3 UNIT CONSTRUCTION MIXED SYSTEM Outdoor unit PUMY P112VKM1 BS PUMY P112YKM1 BS PUMY P125VKM1 BS PUMY P125YKM BS PUMY P140VKM BS PUMY
47. 7 1 Connected pipes diameter Diameter A Di Conversion formula Model name erer 1 4 inch MAC M54JP 9 52 gt 412 7 9 52 IB S 8 inch MAC A455JP 12 7 49 52 12 7 B 1 2 WER MAC A456JP 12 7 15 88 12 7 5 8 inch PAC 493PI 6 35 49 52 6 35 3 4 inch PAC SG76RJ E 9 52 15 88 9 52 OCH576 29 SS 7 4 SYSTEM CONTROL 7 4 1 Example for the System Example for wiring control cables wiring method and address setting permissible lengths and the prohibited items are listed in the standard system with detailed explanation A Example of a M NET remote controller system address setting is necessary Example of wiring control cables Wiring Method and Address Setting 1 Standard operation L1 L2 oc 01 02 TB5 TB15 TB5 TB15 me Ob 1 M NET remote controller for each M NET control indoor unit There is no need for setting the 100 position on the M NET remote controller M NET RC a Use feed wiring to connect terminals M1 and M2 on transmission cable block TB3 for the outdoor unit OC to terminals M1 and M2 on the transmission cable block TB5 of each M NET control indoor unit M IC Use non polarized 2 wire Connect terminals M1 and M2 on transmission cable terminal block TB5 for ea
48. Above specification data is subject to rounding variation OCH576 10 4 DATA 4 1 COOLING AND HEATING CAPACITY AND CHARACTERISTICS 4 1 1 Method for obtaining system cooling and heating capacity To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit first add up the ratings of all the indoor units connected to the outdoor unit see table below and then use this total to find the standard capacity with the help of the tables on 4 3 STANDARD CAPACITY DIAGRAM 1 Capacity of indoor unit Model Number for indoor unit Model 15 Model 20 Model 25 Model 32 Model 40 Model 50 Model 63 Model 71 Model 80 Model 100 Model 125 Model 140 P FY Series Model Capacity 1 7 2 2 2 8 3 6 4 5 5 6 7 1 8 0 9 0 11 2 14 0 16 0 Model Number for indoor unit Model 15 Model 18 Model 20 Model 22 M Series Model 25 Model 42 Model 50 Model 60 Model 71 Model 80 Model 100 S Series P Series Model Cape 1 18 20 22 2 Sample calculation 2 5 4 2 5 0 6 0 7 1 8 0 10 0 System assembled from indoor and outdoor unit in this example the total capacity of the indoor units is greater than that of the outdoor unit Outdoor unit PUMY P125YKM1 Indoor unit PKFY P25VBM E x 2 PLFY P50VLMD E x 2 Q According to the conditions in CD the total capacity of the indoor u
49. CMY Y62 G E Header CMY Y64 68 G E Branch box PAC MK30 50BC Optional parts Remarks 1 Nominal cooling conditions Unit converter Indoor 27 C D B 19 C W B 81 F D B 66 F W B Outdoor 35 C D B 95 F D B Pipe length 7 5 m 24 9 16 ft Level difference 0 m 0 ft 3 Up to P100 when connecting via branch box 4 Up to 11 units when connecting via 2 branch boxes 2 Nominal heating conditions 20 C D B 68 F D B 7 C DB e C W B 45 F D B 43 F W B 7 5 m 24 9 16 ft O m 0 ft kcal h kW x 860 BTU h kW x 3 412 cfm m3 min x 35 31 Ib kg 0 4536 Above specification data is subject to rounding Note 1 Nominal conditions 1 2 are subject to ISO 15042 Ch variation 2 Due to continuing improvement above specifications may be subject to change without notice OCH576 9 Model PUMY P112YKM1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS Power source 3 phase 380 415 V 50 Hz Cooling capacity kw 1 12 5 14 0 15 5 Nominal kcal h 10 750 12 040 13 330 BTU h 42 650 47 768 52 886 Power input kW 2 79 3 46 4 52 Current input A 4 46 4 24 4 09 5 53 5 26 5 07 7 23 6 87 6 62 COP kW kW 4 48 4 05 3 43 Temp range of Indoor temp W B 15 to 24 C cooling Outdoor temp D B 5 to 46 C Heating capacity kw 2 14 0 16 0 18 0 Nominal kcal h 2 12 040 13
50. NET RC Connect together terminals M1 M2 and terminal S on the terminal block for centralized control TB7 for the outdoor DO NOT change the jumper connector CN41 on outdoor multi controller circuit board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the termi nal S on the power supply unit with the earth Setting Method M IC Main 01 to 50 Use the smallest address within the same group of M NET control indoor units M IC Sub 01 to 50 Use an address other than the M IC Main in the same group of M NET control indoor units This must be in sequence with the M IC Main Wiring Method Address Settings Outdoor Unit 51 to 100 Use the smallest address of all the M NET control indoor units plus 50 The address automatically becomes 100 if it is set as 01 50 Main M NET Remote Controller 101 to 150 Set at an M IC Main address within the same group plus 100 Sub M NET Remote Controller 151 to 200 Set at an M IC Main address within the same group plu s 150 MA Remote Controller OCH576 Address setting is not necessary Main sub setting is necessary h The group setting operations among the multiple M NET control indoor units is done by the M NET remote controller M NET RO after the electrical power has been turned on 32 o Name Symbol and the Maximum Units for Connection
51. Outdoor model P125 Indoor 1 P63 7 1 kW A 09 52 30m a 29 52 15m 2 P40 4 5 kW b 06 35 10m 3 P25 2 8 kW c 96 35 10m 4 P20 2 2 kW d 96 35 20m The total length of each liquid line is as follows 09 52 A a 230415 245m 06 35 b c d 10 10 20 40m The total capacity of connected indoor unit is as follows 7 1 4 5 2 8 2 2 16 6 lt Calculation example gt Additional refrigerant charge Pipe size Liquid pipe 99 52 m x 50 0 g m Pipe size Liquid pipe 96 35 m x 19 0 g m At the conditions below the charge to 6 1 kg OCH576 19 0 40x 00g x 100 137 3 0 6 1 kg rounded up Header Branch Method Connection Examples Connecting to 4 Indoor Units C in Y Outdoor Unit First Branch Indoor unit Total Piping Length A a b c d 300 m Permissible E gt nest Piping Length L A d S 150 m Length Farthest Piping Length After First Branch d is 30 meters or less Permissible High High Low Difference in Indoor Outdoor Section H 50 meters or less If the outdoor unit is lower 40 meters or less Low Difference High Low Difference in Indoor Indoor Section h 15 meters or less W Selecting the Refrigerant Branch Kit Please select branching kit which is sol
52. PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service panel 2 Remove screws 3 for front 3 for rear 5 x 12 of the top panel and remove it Photo 1 Top panel Top panel fixing screws Service panel ERE fixing screw Grille fixing screws Service panel Fan grille Grille fixing screws Service panel fixing screws 2 Removing the fan motor MF1 MF2 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 4 fan grille fixing screws 5 x 12 to detach the fan grille See Photo 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 2 5 Disconnect the connectors CNF1 and CNF2 on outdoor multi controller circuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 20 to detach the fan motor See Photo 3 Photo 2 Propeller Photo 3 Front panel Fan motor fixing screws Fan motor fixing screws 3 Removing the electrical parts box 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connecting wire from terminal block 4 Remove all the following connectors from outdoor multi controller circuit board Diagram symbol in the connector housing Fan motor CNF1 CNF2 Thermistor HIC pipe TH2
53. Piping Diameter In Section From Outdoor Unit to First Branch Out From Branch to Indoor Unit Indoor Unit 1 Section From Outdoor Unit door Unit Piping Diameter Piping Diameter to First Branch A Each Model Piping Diameter mm Model number Piping Diameter mm 2 Sections From Branch to Section of PUMY P112 Liquid Line 29 52 50 or lower Liquid Line 6 35 Indoor Unit a b c d e em PUMY P125 Gas Line 612 7 3 Section From Branch to Piping PUMY P140 GasLine 15 88 Liquid Line 49 52 Branch B C ere Gas Line 415 88 Select the size from the table to the right 3 Refrigerant Piping Diameter In Section Note i From Branch to Branch When connecting the CONNECTION KIT PAC LV11M J and an M series indoor Liquid Line mm Gas Line mm unit refer to the installation manual for the 29 52 15 88 CONNECTION KIT when selecting the pipe size and piping length m Additional refrigerant charge Additional Charge Refrigerant for the extended piping is not included in the Calculation of refrigerant charge outdoor unit when the unit is shipped from the factory Pipo size tpe size i e Liquid pipe Liquid pipe Therefore charge each refrigerant piping system with up to 8 0 kW 1 5kg 96 35 99 52 additional refrigerant at the installation site In addition in m x 19 0 gm m x 50 0 g m 8 1 to 16 0 kW 2 5 kg order to carry out service enter the size and
54. Short 90 C or more ae Defective outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards The black square m indicates a switch position Diagnosis Check the wiring and connector connection of TH7 Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wiring connector properly Replace it in case of a breakage Disconnect the connector to check the resistance of TH7 using a tester Is the detected resistance normal Replace the thermistor The detected temperature of TH7 can be displayed by an operation of SW1 on the outdoor multi controller circuit board SW1 Setting Display on LED1 2 Unit Check a temperature of TH7 ON OFF 12345678 99 9 999 9 c Replace the outdoor multi controller circuit board Malfunction of thermistor circuit Y Is the detected temperature normal Yes No abnormality A connector contact failure is suspected Y OCH576 84 Check code 5109 HIC pipe temperature thermistor TH2 open short Abnormal if TH2 detects to be open short D Disconnection or contact failure of connectors Open 40 Cor less Characteristic defect of thermistor Short 90 C or more TH2 Thermi
55. and high pres sure sensor High pressure 5 Remove the electrical parts box See Photo 5 sensor 63HS 6 Recover refrigerant 7 Remove the welded part of high pressure switch and high pressure sensor WB assis Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Photo 12 Note 3 When installing the high pressure switch and high pressure sensor cover them with a wet cloth to prevent them from heating 100 C or more then braze the pipes so that the inside of pipes are not oxidized Removing the low pressure sensor 63LS 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Disconnect the connector 63LS blue on the multi controller circuit board in the electrical parts box 5 Remove the electrical parts box See Photo 5 6 Recover refrigerant 7 Remove the welded part of low pressure sensor Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the low pressure sensor cover it ew bross re Electroni Electronic expan with a wet cloth to prevent it from heating 100 C sensor GILS eescht Sion vale or more then braze the pipes so that the inside LEV A of pipes ar
56. board Check the detected pressure in 63HS SW1 Setting Display on LEI 2 Unit then compare it with the internal pressure ON FF 99 9 999 9 kgf cm 12345678 Is the detected pressure normal Replace the 63HS Replace the outdoor multi controller circuit board Y OCH576 87 5202 Low pressure sensor 63LS trouble When the detected pressure in the low pressure sensor is 2 3kgf cm D Defective low pressure sensor or less or 23 1kgf cm or more during operation the compressor stops Decrease of internal pressure caused by gas operation with a check code 5202 leakage For 3 minutes after compressor restarting during defrosting operation Disconnection or contact failure of connector and for 3 minutes after returning from defrosting operation above G Malfunction of input circuit on outdoor multi controller mentioned symptoms are not determined as abnormal circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards The black square m indicates a switch position Diagnosis 63LS Low pressure sensor Check the wiring and connector connection Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wiring connector properly Replace it in case of a breakage
57. board Note that when controller board is defective in a usual case the check code lt 2500 gt is not displayed OCH576 64 Check code lt Drain sensor models gt 2502 Drain overflow protection Chart 1 of 3 Drain pump DP Let drain sensor self heated and if temperature rises slightly as suspensive abnormality operation stops and changes to protect mode of restarting in 3 minutes Drain pump is abnormal if the condition above is detected during suspensive abnormality 2502 is displayed The unit enters to forced outdoor unit stop when following conditions and are satisfied while the above mentioned detection is performed GThe drain sensor detects to be soaked in the water 10 times in a row Detected that liquid pipe temperature room temperature S 10 C for 30 minutes constantly Notes 1 When the drain sensor detects to be NOT soaked in the water the detection record of and will be cleared 2 Drain pump abnormality above is detected before it becomes an outdoor unit forced stop condition When indoor unit detects above condition outdoor unit in the same refrigerant sytem stops Also indoor unit except for Fan or OFF mode unit stop 2502 is displayed on stopped unit Detection timing of forced outdoor unit stop Constantly detected during unit operation and stop Releasing of forced outdoor unit stop Reset power supply of both abnormal indoor unit
58. for 10 consecutive P112 125 140V seconds or 38A or more Check the compressor wiring for disconnection or looseness Is there any abnormality such as Yes nn h mpr r wiring properly a disconnection or looseness Connect the compresso g propery Replace the outdoor power circuit board Malfunction of current sensor circuit Y OCH576 89 Models equipped with the float switch Contact failure of drain float switch Models equipped with the float switch Contact failure of connector CNAF Abnormal if the connector on the drain float switch side CN4F is detected Defective indoor controller board to be disconnected eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis lt Models equipped with the float switch gt Disconnect and reconnect the connector for float switch on the indoor controller board side then turn the power back ON No abnormality Is the check code lt 5701 gt gt A connector or wiring contact failure is still displayed suspected Check if it is short circuited between pins 3 4 of the connector CN4F on the float switch side Is it short circuited Replace the connector for float switch Yes gt Replace the indoor controller board
59. furthest end 200m On remote controller line 12m Decline of transmission voltage signal due to unmatched transmission line types Types for shield line CVVS CPEVS Line diameter 1 25 mm or more Accidental malfunction of error source controller eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Turn the power OFF of indoor outdoor unit Fresh Master Lossnay and remote controller simultaneously for 2 minutes or more then turn the power back ON Remedy Replace the controller board Does it operate normally e Check the transmission line for a disconnection and looseness on the terminal board and connector j y Defect of the controller which the displayed address attribute belong to The transmission line is connected properly Check the transmission line whether it exceeds the tolerance or not I gt Connect the transmission line properly gt Correct it within the tolerance It is not exceeding the tolerance cs Check whether the correct kind of transmission line is used or not Is correct kind of transmission line gt Replace it with the correct kind of used Yes transmission line There is no abnormality on the AC unit Check the
60. group operation system with 2 or more outdoor units and a M NET remote controller Address settings are necessary Examples of Transmission Cable Wiring System controller Mt Wis Group Group Shielded Wire Sub M NET Remote Controller Group Address example the M NET control indoor unit M IC unit OC g Set the address setting switch as follows Unit Range Always use shielded wire when making connections between the outdoor unit OC and the M NET control indoor unit M IC as well for all OC OC and IC IC wiring intervals Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on the transmission cable trminal block of Connect terminals M1 and M2 on the transmission cable terminal block of the M NET control indoor unit M IC that has the most recent address within the same group to the terminal block on the M NET remote controller M
61. indoor unit s capacity or each unit s equivalent power consumption Refer to DATA BOOK OCH576 134 9 5 SYSTEM SWITCH SETTING In order to identify the destinations of signals to the outdoor units indoor units and remote controller of the MULTI S series each microprocessor must be assigned an identification number address The addresses of outdoor units indoor units and remote controller must be set using their settings switches Please consult the installation manual that comes with each unit for detailed information on setting procedures 9 6 EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM m Example of system when using a M NET controller Breaker for Wiring Power supply and Current Leakage 3 phase 4 wire Outd 380 400 415 V 50 Hz E Geet Grounded Breaker for Wiring em EE ee EE EE ee EE E ee EE Power supply and Current Leakage Pull box i E E E E single phase m e Ar A i 220 230 240 V 50 Hz E X xX XxX c 1 25mm x 2 i Y 77 t77 Yr SC I 1 TM P qu Indoor Unit r l T 3s s S E eave a gl Group operation E I L m Example of system when using a Branch Box Remote controller wire When power is supplied separately Breaker for Wiring and Current Leakage 3N 380 400 415 V 50 Hz Ge uni Grounded Breaker for Wiring EN lila ps GI aa ia alata Gl Tend erer E and Current Leakage N 2
62. l ojuoo Bunsoujep jo eDBueuS p 384wa os si uoge edo Iy 3H n jo e2ua uod au L ub u aup LOD DOE eu UYS OL 440 SEI NO ES sDumes Eur _ B B z E E ECH L aneedu eGueupsp gk TAO auus 4o OLS IOOO NVA Jo eseanui pue Ajoede sso Ul snseu e6euous T Bu no NO vod Sy UI SI YPM JUN JOOpul Sun uo En eby gun ay buno pue uone do LOOS Dn pda S zh D In iio Pd ap Bui arpg EE Uuorsuecbe uon r stn susdo Api UM gun SUA Ul pero OH AER aigu siques6ugasur i RS uone edo ui si uN oono eu Bund g uonemdourpu si pav sun 8 29S 7 E 446 w Lachen DOC dOLS Nv4ursi aQ ur uonej unooe pnb yeya q enp Quoedeo en N UpIuw CDU BUY UO ee uorsuedxa U9IIMS Bu Jo SEL SN e eng See Nr Weeer U S1 e6eucus ue eya e prone o uoneido Iyv3H NO iieri nest TN 3komopau suedo Apps uone edo uonounyj pel q 349 Hi HJ91 V u uep apo sun ao af Dusch ATI ap uso oL sbumes eniu Jv3Hursiqunadooppo ap buna SMS PS Quy AAO NO uomneuuoju jeuonippv esoding SXJEeuloH uonoun4 des yms 113 OCH576 O 8 6 OUTDOOR UNIT INPUT OUTPUT CONNECTOR e State CN51 Distant control board Lamp power supply IT ME POE X mn i I rcd 22 1 Relay circuit Procure loc
63. length of each 16 1 kW or above 3 0 kg liquid pipe and additional refrigerant charge amounts in Included refrigerant amount when shipped from the factory a Incl fri the spaces provided on the Refrigerant amount plate on EE e amount the outdoor unit lt Example gt Calculation of additional refrigerant charge Outdoor model P140 Indoor 1 P63 7 1 kW A 99 52 30m 99 52 15m Calculate the additional charge using the liquid pipe size 2 P40 d 5 M B 09 52 10m b 0635 10m At the conditi and length of the extended piping and total capacity of P25 2 8 kW C 99 52 10m c 96 35 10m beue nS Total capacity of Amount for the connected indoor units indoor units 3 connected indoor units 4 P20 2 2 kW 96 35 20m Calculate the additional refrigerant charge using the S P20 22kW e 96 35 10m d h to the right and ch ith th The total length of each liquid line is as follows procedure shown to the right and charge with the 9952 A B C a 65m additional refrigerant 6 35 b c d e 50m For amounts less than 0 1 kg round up the calculated The total capacity of connected indoor unit is as follows additional refrigerant charge f SS 2 8 SE 2 2 18 8 i Calculation example For example if the calculated charge is 6 01 kg round up Additional refrigerant charme the charge to 6 1 kg 19 0 50 0 50 x 100 65x 100 3 0 7 2 kg rounded u
64. lin 41 DS 4 way valve 2184 ji Ss 7v Pilla he ee wire from the electrical parts box i TAM lt 1 ed S panne a terminal cover and disconnect the compressor N o Me MC s d Terminal Cover Front panel fixing screws 5 x 12 Terminal block TB3 TB7 Terminal block TB1B L Cover panel hal Front Cover panel Front panel fixing screws fixing screws 5 x 12 Continue to the next page OCH576 144 From the previous page OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 6 Remove 2 electrical parts box fixing screws 4 x 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 5 Electrical parts box Electrical parts box fixing screws 4 Removing the thermistor Suction pipe TH6 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 8 Disconnect the connectors TH6 and TH7 red on the outdoor multi controller circuit board in the electrical parts box 4 Loosen the wire clamps on the side of the electrical parts box and next to it 5 Pull out the thermistor Suction pipe TH6 from the sen sor holder Note When replacing thermistor Suction pipe TH6 replace it together with thermistor Ambient TH7 since they are combined together Refer to procedure No 5 below to remove thermistor Amb
65. of com pressor The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a small amount Do not use a charging cylinder If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Charge refrigerant from liquid phase of gas cylinder If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released Use the specified refrigerant only Do not use refrigerant other than R410A If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc OCH576 Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manuals and on the spec labels provided with our products We will not be held responsible for mechanical failure system malfunction unit breakdown or accidents caused by failure to follow the instructions 1 Cautions for service 1 Perform service after recoverin
66. of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the Refrigerant amount plate on the outdoor unit Calculation of additional refrigerant charge Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connected indoor units Calculate the additional refrigerant charge using the procedure shown to the right and charge with the additional refrigerant For amounts less than 0 1 kg round up the calculated additional refrigerant charge For example if the calculated charge is 6 01 kg round up the charge to 6 1 kg OCH576 Additional Charge Calculation of refrigerant charge Total capacity of Amount for the Pipe size Liquid pipe 96 35 Pipe size Liquid pipe 99 52 connected indoor units indoor units up to 8 0 kW 1 5 kg m x 19 0 g m m x 50 0 g m 8 1 to 16 0 kW 2 5 kg 16 1 kW or above Included refrigerant amount when shipped from the factory included refrigerant amount 4 8 kg Example Outdoor model P125 Indoor 1 P63 7 1 kW A 99 52 30m a 99 52 15m 2 P40 4 5 kW b 96 35 10m 3 P25 2 8 kW c 96 35 10m 4 P20 2 2 kW d 96 35 20m The total length of each liquid line is as follows 09 52 A a 30 15 45m 96 35 b c d 10 10 20 40m The total capacity of connected indoor unit is as follows 7 1 4 5 2 8 2 2
67. of piping to farthest indoor unit type P112 to P140 150 m 4 4 3 Correction of Heating Capacity for Frost and Defrosting If heating capacity has been reduced due to frost formation or defrosting multiply the capacity by the appropriate correction factor from the following table to obtain the actual heating capacity Correction factor diagram Outdoor Intake temperature W B C Correction factor OCH576 20 4 5 NOISE CRITERION CURVES MODE SPL dB LINE PUMY P112VKM1 BS MODE ee LINE PUMY P125VKM1 BS ora E pes ee ee PUMY P125YKM1 BS HEATING 52 e e PUMY P112YKM1 BS HEATING Si oe 90 1 1 E T i be i i T oO Es 4 Q amp 1 80 1 1 8 80 S 2 RQ j i WE E e ti EJ m 70 1 4 E m 70 Se E JNc 70 e a 3 4 m s 60 Mj j 60 a ul u gt a u 4 w 50 w 50 K 2 3 o o o i hi B ig 3 ai tc En 4 a 3 S Z 4 S 30 5 E a 30 i E BS F 2 ioi x o WE E z io f d i uw m Gr F oe O EP OE 1 E HEARING FOR LA 1 i E a HEARING FOR
68. of the indoor outdoor unit is shorted down or badly contacted 2 For MA remote controller systems Symptom or inspection code Cause Check the part where the abnormality occurs The entire system In the entire refrigerant system G In same group only 1 indoor unit only In case of the entire system or in the entire refrigerant system Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit In case of in same group only or 1 indoor unit only gt Check the items shown in the left that are related to the indoor unit Inspection method and solution Though the content of operation is displayed on the remote controller some indoor units do not operate The power supply of the indoor unit is not on Wiring between indoor units in same group is not finished The indoor unit and Slim model are connected to same group The fuse on the indoor unit controller board is blown Though the indoor unit operates the display of the remote controller goes out soon The power supply of the indoor unit Master is not on In case of connecting the system controller the setting of the system controller does not correspond to that of MA remote controller The fuse on the indoor unit Master controller board is blown is not displayed on the remote controller MA remote controller is not fed The remot
69. phase Indicates equivalent to Cooling capacity k cal h 220 230 240 V 50 Hz 3 Operating temperature range Heating D B 15 to 27 C W B 20 to 15 C Cooling W B 15 to 24 C Indoor side intake air temperature Outdoor side intake air temperature D B 5 to 46 C D B Dry Bulb Temperature W B Wet Bulb Temperature 1 10 to 46 C D B When connecting PKFY P15 P20 P25VBM PFFY P20 25 32VKM and PFFY P20 25 32 VLE R M type indoor unit Notes m When connecting fresh air type indoor unit Capacity of Fresh air type indoor P80 Cooling Heating D B 21 to 43 C 2 W B 15 5 to 35 C D B 21 to 43 C P140 W B 15 5 to 35 C Thermo OFF FAN mode automatically starts if the outdoor temp is lower than 21 C D B 3 Thermo OFF FAN mode automatically starts if the outdoor temp is higher than 20 C D B Indoor side and Outdoor side D B 10 to 200 intake air temperature D B 5 to 20 C 3 m When connecting Air to Water Unit Cooling Heating H D B 10 to 45 C Outdoor side intake air temperature i W B 20 to 15 C 4 e PWFY series can operate in Heating mode but not in Cooling mode An indoor unit other than that of PWFY series can operate in Cooling mode A PWFY series and other series cannot operate simultaneously The operation of PWFY series takes precedence over other series While a PWFY series is operating other series do not operate The s
70. remov ing the right side panel Note 3 When installing the low pressure sensor cover it with a wet cloth to prevent it from heating 100 C Low pressure Electronic expansion Electronic or more then braze the pipes so that the inside sensor 63LS valve coil LEV A expansion valve of pipes are not oxidized 12 Removing electrical expansion valve LEV A LEV B 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Remove the electrical expansion valve coil See Photo 11 12 5 Remove the electrical parts box See Photo 5 6 Recover refrigerant 7 Remove the welded part of electrical expansion valve OCH576 152 OPERATING PROCEDURE PHOTOS 13 Removing the reactor DCL 1 Remove the service panel See Photo 1 Photo 13 2 Disconnect the lead wires from the reactor Reactor box 4 way valve 3 Remove the 4 screws that fix the reactor box See Photo 13 4 Remove the reactor box Note 1 The reactor is very heavy Be careful when handling it Screws OCH576 153 OPERATING PROCEDURE PHOTOS 14 Removing the compressor MC Photo 14 1 Remove the service panel See Photo 1 Valve bed 2 Remove the top panel See Photo 1 8 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 4 4 Remove f
71. supply unit to the earth g Set the address setting switch as follows Unit Range Setting Method According to the set address of connected Branch Box set the A IC addresses sequentially by SW1 on Branch Box For example when setting the Branch Box address to 01 A IC addresses set 02 03 04 and 05 Use a number within the range 1 50 but it should not make the highest address of connected A IC exceed 50 Use the smallest address of all the Branch Box plus 50 The address automatically becomes 100 if it is set as 01 50 MA Remote Controller Address setting is not necessary A IC 01 to 50 Wiring Method Address Settings Branch Box 01 to 50 Outdoor Unit 51 to 100 OCH576 38 pt Name Symbol and the Maximum Units for Connection Longest length via outdoor unit M NET cable L1 L2 L3 and L1 L2 L3 L4 L5 500 m 1 25 mm2 or more Longest transmission cable length M NET cable L1 L2 and L3 L4 and L5 200 m 1 25 mm2 or more Longest transmission cable length A Control cable L6 25 m 1 25 mm2 or more Remote controller cable length m1 200 m 0 3 to 1 25 mm2 Permissible Length TB3A Branch Box
72. the connector to check the resistance of TH4 using a tester Is the detected resistance normal Replace the thermistor The detected temperature of TH4 can be displayed by an operation of SW1 on the outdoor multi controller circuit board SW1 Setting Display on LED1 2 Unit Check a temperature of TH4 Ee OFF 12345678 99 9 999 9 c Replace the outdoor multi controller circuit board Malfunction of thermistor circuit Y Is the detected temperature normal Yes No abnormality A connector contact failure is suspected Y OCH576 80 5102 Suction pipe temperature thermistor TH6 open short Detected in outdoor unit Abnormal if TH6 detects to be open short D Disconnection or contact failure of connectors The open short detection is disabled during 10 sec to 10 min after Characteristic defect of thermistor compressor starts during defrosting operation or for 10 min after returning from the defrosting operation Open 40C or less Short 90C or more TH6 Thermistor Suction pipe Defective outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards The black square m indicates a switch position Diagnosis Check the wiring and connector connection of
73. to the ACL4 Primary current T6 3AL250V Connect to the outdoor 2 EE CNCT power circuit board FUSE C CN5 FHI FH2 LO1 LO2 LO3 POWER SUPPLY LO1 LO2 LO2 LO3 LO3 LO1 380 400 415 V AC OUTPUT Connect to the outdoor power circuit board and ACL TB L1 TB L2 TB L3 OCH576 122 ON D Slt 99 Zo e 1 8 10 OUTDOOR UNIT INFORMATION DISPLAY yo ufi 440 oway uo W I No oway uome1edo pun g oN uonejedo yun ON uomneiedo jun 9 oN uoneJedo yun oN uonejedo jun p oN uomne1edo jun E ON uoneJedo yun z oN uonejedo yun ON Aeldsip uogejedo jun joopuj 000 LLOOL Sz usung w6y Beet uo lu Buyoon SPW lun SON apow yun LON spe yun 9 oN epow yun GON potu yun p oN epouriun amp oN pouu yun z oN pou yun Vo sto uonejedo qun Joopul 00011000 p uonoeijep Ajeuuouqw uogejedo j0sseJduio sejnuiu jeje pesay quen uomneyox3 Aeldsip uogejedo wun jo0pino 000 LOLLL Z euin Bunejedo 1osse1duioo mou 0 lun 6666 0 euin eAVEINWND 000L0LL0 zz enne numno jo eldsiq noy aun 6666 0 eum eaneinuUND 00010101 LZ sepjo y SI O ut pioo 1 Ayo siy eouenbes ul Jepjo eujo2eq spJoo22i 3seje y SI L ui p10291 AJO SIH syeuiuue1 Ay euuouge Duipnjour juesaid o dn senijeuuouqe Aide Ayjeuuouge ajnpow amod Kypeuuouge ainyesoduia xurs e H yjeuuouqe LHL lt quaiquiy gt 10jsiuueu yjeuuouge jue
74. x PLFY P PLFY P PMFY P PEFY P PKFY P PCFY P PFFY P PFFY P PEFY P PWFY P 15VMS1 L 15VBM E 20VCM E 2 20VLMD E 20VBM E AS 20VBM E 1 VMA L E E 2 25VMS1 L 25VLEM E as sven mg pma E 25VBM E 25VBM E 25VLRM E I VMA L E VKM E 2 ERES E 2 32VMS1 L 32VLEM E 32VLMD E 32VBM E 32VHM E 32VLRM E 32VBM E VMA L E VKM E 2 DUCERE 40VLMD E 40VBM E AUN MSIE 40VHM E 40VKM E AOVLEM E 40VLRM E 40VBM E I VMA L E T E VKM E EES e See 63VBM E 63VLMD E VMA L E VMH E 63VKM E 63VKM E 63VLEM E 63VLRM E 71VMA L E VMH MA B Poo ne pees Pp 100 100VBM E 100VLMD E weg 100VKM E 100VKM E 100VM E AU I VMA L E Bu x 425 H RR Decorative panel Name M NET remote controller MA remote controller M series remote controller PAR 21MAA PAR 30 31MAA PAR W21MAA when using PWFY Addresses setting is not necessary CONNECTION KIT PAC LV11M J T c 3 M series indoor unit 4 MSZ GF Series MSZ SF Series MSZ EF Series MSZ FH Series MFZ KJ Series Remote Model number PAR F27MEA E controller A handy remote controller for use in conjunction with the Melans centralized management system Addresses must be set Functions 1 PUMY is connectable to Fresh Air type indoor unit It is possible to connect 1 Fresh Air type indoor unit to 1 outdoor unit 1 1 system Operating temperature range outdoor temperature for fresh air type indoor un
75. x 10 and 4 ball valve and stop valve fixing screws 5 x16 and then remove the valve bed See Photo 4 and 7 7 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 accumulator leg fixing screws 4 x 10 See Photo 16 Note Recover refrigerant without spreading it in the air Photo 15 Photo 16 Gg j P P Dum t 3 Accumulator Accumulator leg screws OCH576 154 OCH576 155 CHY Muti MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2014 MITSUBISHI ELECTRIC CORPORATION Distributed in Oct 2014 No OCH576 New publication effective Oct 2014 Made in Japan Specifications are subject to change without notice
76. 0 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW 8 0 7 0 6 0 4 0 Current A 3 0 2 0 1 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW OCH576 17 4 3 6 PUMY P140VKM1 BS PUMY P140YKM1 BS heating Capacity kW Current A Input kW Current A 20 0 18 0 16 0 14 0 12 0 10 0 8 0 6 0 4 0 2 05 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0559 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW 25 0 20 0 15 0 10 0 5 0 0 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 i 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 Total capacity of indoor units kW OCH576 18 D 4 4 CORRECTING COOLING AND HEATING CAPACITY 4 4 1 Correcting Changes in Air Conditions 1 The performance curve charts Figure 1 2 show the change ratio of capacity and input power consumption according to the indoor and outdoor temperature condition when
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78. 0I LLLOOOLO 9z2 Jojsiuueui JOOpU uoee f f f Oo PINbI ZZHL 80I LLL00001 Szz wou e1ep uoroejep ji Aejdsig 2 6 666 40 6 66 uedoruous 6666 66 66 D gt pinbil ZZHL 9I LLL00000 pzz Do pinbi ZZHL 901 LLOLLLLL Eze Oo Se EZHL 89I LLOLLLLO zzz Oo Se EZHL ZO LLOLLLOL Lez Oo SD amp cHL 901 LLOLLLOO ozz S D z L 9 9Sv Z L Soch epou Ke dsiq Bumes ON eyep Aejdsip z Lq31 eui uo fejdsiq LMS 130 OCH576 9 ELECTRICAL WIRING This chapter provides an introduction to electrical wiring for the CITY MULTI S series together with notes concerning power wiring wiring for control transmission wires and remote controller wires and the frequency converter 9 1 OVERVIEW OF POWER WIRING 1 Use a separate power supply for the outdoor unit and indoor unit 2 Bear in mind ambient conditions ambient temperature direct sunlight rain water etc when proceeding with the wiring and connections 3 The wire size is the minimum value for metal conduit wiring The power cord size should be 1 rank thicker consideration of voltage drops Make sure the power supply voltage does not drop more than 10 96 4 Specific wiring requirements should adhere to the wiring regulations of the region 5 Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord design 60245 IEC57 For example use wiring such as YZW 6 Instal
79. 0m 2 If the length exceeds 10 meters the exceeding section should be 1 25 mm and that section should be a value within the total exten sion length of the transmission cable and maximum transmis sion cable length L3 M NET remote controller M NET RC and MA remote controller MA RC cannot be used together Do not connect anything with TB15 of M NET control indoor unit M IC M 01 02 TBS TB15 TBS TB15 1 2 Mis t NET RC Same as above 51 TBa TB7 02 TB5 TB15 Mi Mas M NET RC M NET RC Main Sub M NET RC M NET RC M NET RC Main Sub Use the M NET control indoor unit M IC address plus 150 as the sub M NET remote controller address In this case it should be 152 3 or more M NET remote controller M NET RC cannot be connected to 1 M NET control indoor unit Same as above OCH576 M IC Main TB5 TB15 M IC Sub 01 02 TB5 TB15 qs ile Mijas i NI N M NET 31 o if RC The M NET remote controller address is the M NET control indoor unit main address plus 100 In this case it should be 101 w l B Example of a
80. 16 0 18 0 20 0 Total capacity of indoor units kW OCH576 13 4 3 2 PUMY P112VKM1 BS PUMY P112YKM1 BS heating 16 0 14 0 12 0 10 0 8 0 Capacity kW 6 0 4 0 2 020 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 200 Total capacity of indoor units kW 3 5 3 0 2 5 2 0 Input kW 0550 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 20 0 15 0 220V 230V 1 J 1 1 1 J 1551 L lt Fos 240V tL E E E ail 10 0 pe Current A 0 0 L i d L E LL L LL LL L 1 LL a EL LLL LL LL LL L 1 1 l a c c4 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 6 0 HI br lt o o 5 0 4 0 3 0 C ET Current A A a lt
81. 20 230 240 V 50 Hz N 220 V 60 Hz Transmission cable 1 25 mm or more Shield cable MA RC cable 0 3 1 25 mm 0 75 1 25 mm When power is supplied from outdoor unit Breaker for Wiring and Current Leakage 3N 380 400 415 V 50 Hz 75444 Outdoor unit Breaker for Wiring t jp 7 7 and Current Leakage N 220 230 240 V 50 Hz N 220 V 60 Hz Transmission cable 1 25 mm or more Shield cable I M NET control indoor unit M NET control indoor unit MA RC cable 0 3 1 25 mm 0 75 1 25 mm OCH576 135 SS 9 7 METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY The electrical characteristics of connected indoor unit system for air conditioning systems including the MULTI S series depend on the arrangement of the indoor and outdoor units First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company 9 7 1 Obtaining the electrical characteristics of a CITY MULTI S series system 1 Procedure for obtaining total power consumption Page numbers in this technical manual Power consumption Total power consumption of each indoor unit See the technical manual of each indoor unit Power consumption of outdoor unit Standard ca
82. 25 in 52 11 16 x 41 11 32 x 13 1 Protection High pressure protection High pressure Switch devices Inverter circuit COMP FAN Overcurrent detection Overheat detection Heat sink thermistor Compressor Compressor thermistor Over current detection Fan motor Overheating Voltage protection Refrigerant Type x original charge R410A 4 8kg Control Electronic Expansion Valve Net weight kg Ib 125 276 Heat exchanger Cross Fin and Copper tube HIC circuit HIC Heat Inter Changer HIC circuit Defrosting method Reversed refrigerant circuit Drawing External BK01N339 Wiring BH78B814 Standard Document Installation Manual attachment Accessory Grounded lead wire x2 Optional parts Joint CMY Y62 G E Header CMY Y64 68 G E Branch box PAC MK30 50BC Remarks Indoor Outdoor Pipe length Level difference 1 Nominal cooling conditions 27 C D B 19 C W B 81 F D B 66 F WB 35 C D B 95 F D B 7 5 m 24 9 16 ft O m 0 ft 3 Up to P100 when connecting via branch box 4 Up to 11 units when connecting via 2 branch boxes 2 Nominal heating conditions 20 C D B 68 F D B 7 C DB e C W B 45 F D B 43 F W B 7 5 m 24 9 16 ft O m 0 ft Note 1 Nominal conditions 1 2 are subject to ISO 15042 2 Due to continuing improvement above specifications may be subject to change without notice Unit converter kcal h kW x 860 BTU h kW x 3 412 cfm m3 min x 35 31 Ib kg 0 4536
83. 2502 Drain overflow protection Chart 2 of 3 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Continued from the previous page Is the resistance of drain sensor normal Replace the drain sensor lt How to check the resistance gt Disconnect the connector for drain sensor from the indoor controller board to check the resistance using a tester lt Drain Sensor gt 10 D 9 DC 6 0 kQ 10C 3 9 kQ 8 20C 2 6 kQ z 25C 2 2 kQ 30 C 1 8 kQ x 40 C 1 3 kO 5 60 C 0 6 kQ B c 4 3 2 Disconnect the connector for 1 drain sensor CN31 and short circuit between pins 1 2 on the 0 indoor controller board then start 20 0 80s 40 700 8 cooling operation Temperature C No abnormality The cause might be that the drain level Is the check code leng 2 B was unusually high ce LE Restore the drain sensor and operate the unit Yes EEN gt Connect the connector CNA properly gt Turn ON the emergency operation switch SWE Is 200 V AC output on Y the connector CNP Replace the indoor controller board Yes Y Continue to the next page OCH576 66 Check code lt Drain sensor models gt 2502 Drain overflow protection Chart 3 of 3 eDiagnosis of defectives
84. 2C amp Defective outdoor power circuit board amp Malfunction of 52C driving circuit on outdoor multi controller circuit board Disconnection of CN5 Disconnection of CN2 Malfunction of primary current detecting circuit on outdoor power circuit board The black square m indicates a switch position T open phase Disconnection of compressor wiring Disconnection of CN52C Disconnection of CN5 Disconnection of CN2 DaO CO o The sub codes are displayed by an operation of SW1 on the outdoor multi controller circuit board SW1 Setting Display on LED1 2 3 PAM error 1 Y Does a DC bus voltage raise to approx 350 V at PAM driving ON OFF 12345678 123 45 67 e Bad 6 Input sensor trouble 7 Undervoltage trouble 8 Overvoltage trouble co e Is there any abnormality on PAM wirings Yes Check the power supply facility e Is there any abnormality at the PAM circuit on the outdoor power circuit board em Correct the wiring Replace the outdoor power circuit board Is there any abnormality at the PAM power supply circuit on the outdoor multi controller circuit board Yes Defective outdoor power circuit board Replace the outdoor multi controller circuit board Breakage of wiring for PAM controlling power supply and such Y Y C
85. 4 6 35 3 8 9 52 1 2 12 70 5 8 15 88 3 4 19 05 Thickness mm Dimensions of flare cutting and flare nut The component molecules in HFC refrigerant are smaller compared to conventional refrigerants In addition to that R410A is a refrigerant which has higher risk of leakage because its working pressure is higher than that of other refrig erants Therefore to enhance airtightness and strength flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also has partly been changed to increase strength as shown below Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below For 1 2 and 5 8 inch pipes the dimension B changes Use torque wrench corresponding to each dimension 4 on i ING en O i 1 N pct suiit ird Nx w Dimension A 7 de d y I Dimension B Flare nut dimensions Nominal dimensions in 1 4 3 8 1 2 5 8 3 4 Flare cutting dimensions Nominal Outside dimensions in diameter mm 1 4 6 35 3 8 9 52 1 2 12 70 5 8 15 88 Dimension A 24 mm R410A R22 9 1 9 0 13 2 13 0 16 6 16 2 19 7 19 4 Dimension B mm R410A R22 17 0 17 0 22 0 22 0 26 0 24 0 29 0 27 0 36 0 Outside diameter mm 6 35 9 52 12 70 15 88 19 05 Tools for R410A The following table sh
86. 6 101 6832 6833 MA communication send error Chart 1 of 2 eDiagnosis of defectives Detected in remote controller or indoor unit There are 2 remote controllers set as main Malfunction of remote controller sending receiving circuit Malfunction of sending receiving circuit on indoor controller board Remote controller transmitting error caused by noise interference Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Disconnect and reconnect the connector CN3A then turn the power back ON Is the check code 6832 or 6833 still displayed T Diagnosis Remedy No abnormality Check the remote controller for main sub setting Is there only 1 remote controller set as the main controller T gt A connector or wiring contact failure is suspected Set one remote controller to main remote Conduct the Remote Controller Diagnosis more than 2 times Is RC OK displayed on all remote controllers Note It takes 6 sec at maximum until the result is displayed Turn the power back ON 6 minutes Continue to the next page OCH576 Is RC NG displayed Is RC 6832 or ERC01 to ERC66 displayed controller and the other to sub No abnormality It might be caused by an external noise so check the t
87. 760 15 480 BTU h 47 768 54 592 61 416 Power input kW 3 04 3 74 4 47 Current input A 4 86 4 62 4 45 5 98 5 68 5 48 7 15 6 79 6 55 COP kW kW 4 61 4 28 4 03 Temp range of Indoor temp D B 15 to 27 C heating Outdoor temp WB 20 to 15 C Indoor unit Total capacity 50 to 130 of outdoor unit capacity connectable Model Quantity Citymulti 15 125 9 15 140 10 15 140 12 Branch box 15 100 8 15 100 8 15 100 8 Mixed system 15 125 3 10 15 140 10 4 15 125 10 4 Sound pressure level dB A ere in anechoic room zoe s0 52 51 53 Power pressure level dB lt A gt E _ measured in anechoic room Refrigerant Liquid pipe mm in 9 52 3 8 piping diameter Gas pipe mm in 15 88 5 8 FAN 2 Type x Quantity Propeller Fan x 2 Air flow rate m3 min 110 L s 1 833 cfm 3 884 Control Driving mechanism DC control Motor output kW 0 06 0 06 External static press 0 Compressor Type x Quantity Scroll hermetic compressor x 1 Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control 96 Cooling 26 to 100 Heating 20 to 100 Cooling 24 to100 Heating 18 to 100 Cooling 21 to 100 Heating 17 to 100 Motor output kW 2 9 3 5 3 9 Case heater kW 0 Lubricant FV50S 2 3litter External finish Galvanized Steel Sheet Munsell No 3Y 7 8 1 1 External dimension HxWxD mm 1338 x 1050 x 330
88. 9 01 U09 ejouueJ e JO PUN JOOPU ay uo YAMS e sn PUN J00pino y Aq uni eq j0uueo seres AAMd UO uni 1S9 py The black square m indicates a switch position deus SUN ap E E oe 6 prbi 31e jugi a anp sseepsp apow Buneern SUB stoU NOU DU URL V Surge El enee Cep eu SONS or E UUON Wad 1009 qns 1e8Je1 ou BuiuoiMS 9 ni po ns Fe xn eseacep OL uonejedo uonejedo BursoJjep yuaya epi od pue Buunp 10 440 Beate uoge edo funsouep TH E aor SARI Counce MEO IEUUON e qeu3 1sojjep ye Duiuedo S eu Buunp esiou WOU jueJeD Jal eu vonezco Bunsnigp Buurp A31 sun Joopul ey eaBueyD jenn uap apy budo anap psor 8 29S VE L us 440 aun 4ocpur DC OO an a enger Age n w uonoun PO Ec pue PAPULOSIS D puorsuoisstuer EN NON es seyeay Gen ome i Data si Janeau Are EAM 3 ITEM Nom sbumes mut AZ SO uepno auooeg Iaue AJI Sun ud uone do ay vadul or uoneJedo UO eiqeu dn yueis je Buiuedo dn uejs ye esiou Moy jueJeDujei eu SSMA OSEH Buunp Jo yo N DPI A31 Sun Joopul ay eaBueyD e Een uen Lu has 3e Duch AT19u1395 OL UBM Jas aq UeD eiensny episno SEIN UI SES DI NO stu UN u 0g 10 QUOD pue Lep aui eyevme Q NO un L gl EULON Sumps ereny SEI EES a L zt 9S rect
89. A 0 1 sec or less 100 or less 100 mA 0 1 sec or less Wire thickness V3 1 5 mm 48 2 5 mm 56 4 0 mm 66 Rated Tripping current x Bear in mind ambient conditions ambient temperature direct sunlight rain water etc when proceeding with the wiring and connections 2 The wire size is the minimum value for metal conduit wiring The power cord size should be 1 rank thicker consideration of voltage drops Make sure the power supply voltage does not drop more than 10 Specific wiring requirements should adhere to the wiring regulations of the region 4 Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord design 60245 IEC57 For example use wiring such as YZW 5 Install an earth longer than other cables OCH576 133 9 3 DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI S series depend on the remote controllers and whether they are linked with the system or not 9 3 1 Selection number of control wires M NET remote controller Remote controller used in system control operations Use Group operation involving different refrigerant systems Linked operation with upper control system Remote controller indoor unit Wires connecting indoor units 2 core wire non polar Wires connecting indoor units with outdoor unit Transmission Wires con
90. Branch Box or M NET control indoor unit M IC as well for all OC OC wiring intervals Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on the transmission cable terminal block TB5 of the Branch Box or M NET control indoor unit M IC Connect terminals 1 and 2 on the transmission cable terminal block TB15 of the A control indoor unit A IC or M NET control indoor unit M IC to the terminal block on the MA remote controller MA RC d Connect together terminals M1 M2 and terminal S on the terminal block for centralized control TB7 for the outdoor unit OC e DO NOT change the jumper connector CN41 on MULTI controller board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the termi nal S on the power supply unit to the earth g Set the address setting switch as follows Unit Range Setting Method M IC 01 to 50 According to the set address of connected Branch Box set the A IC addresses sequentially by SW1 SW11 SW12 on Branch Box For example when the Branch Box address is set to 01 set the A IC addresses to 01 02 03 04 and 05 Use a number within the range 1 50 but it should not make the highest address of connected A IC exceed 50 Use the smallest address of all the Branch Box plus 50 The address automatically be
91. Continued from the previous page Is there a resistance detected Yes 63H equipped mode Is the connector for outdoor multi controller circuit board 63H disconnected or loose 63HS equipped model 63H non equipped gt Check the 63HS voltage Is there a voltage detected Yes Replace the SV1 63HS non equipped gt ec gt Reconnect the connector or connect it tightly T gt Replace the outdoor multi controller circuit board gt Replace the 63HS Replace the outdoor multi controller circuit gt board OCH576 56 Check code 1500 Superheat due to low discharge temperature trouble Chart 1 of 2 Abnormal if the discharge superheat is continuously detected less than or equal to 15 C 5 F for 5 minutes even though the indoor LEV has minimum open pulse after the compressor starts operating for 10 minutes LEV Electronic expansion valve TH4 Thermistor Compressor 63HS High pressure sensor At this temperature conditions for the abnormality detection will not be satisfied if no abnormality is detected on either TH4 or 63HS Disconnection or loose connection of TH4 Defective holder of TH4 Disconnection of LEV coil Disconnection of LEV connector LEV performance failure eDiagnosis of defectives Make sure to turn the power OFF before co
92. Diagnosis Check the total number of connected indoor unit model names Is the total under 130 of Correct the total number of connected the number of outdoor unit model name Check the capacity code switch SW2 on the indoor controller board on the connected indoor unit gt indoor unit model name within 130 of the number on the outdoor unit model name gt Set the switch properly Is it set properly Check the model selection switch SW4 on the outdoor multi controller circuit board of the outdoor unit Is it set properly Set the switch properly Yes Complete OCH576 104 Check code 7101 Capacity code error When a connected indoor unit is incompatible a check code lt 7101 gt is displayed The model name of connected indoor unit model code is read as incompatible The connectable indoor units are P112 to P140 model P15 to P140 model code 3 to 28 When connecting via branch box P15 to P100 model code 3 to 20 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the model selection switch SW4 on the indoor controller board of the connected indoor unit Remedy Is it set properly Yes Set the switch properly
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95. MY P112VKM1 BS PUMY P112YKM1 BS PUMY P125VKM1 BS PUMY P125YKM1 BS PUMY P140VKM1 BS PUMY P140YKM1 BS CAUTION TEST POINT is high voltage SW8 SW2 SW3 SW7 SWA CN51 Model selection Pump down Test run Forced defrost Model selection SS signal ou put CN102 Connect to the M NET SW6 power circuit board Function selection SW5 Function selection 17 CN40 CN41 Centralized control power supply For storing SW9 jumper connector selection Function selection SW1 CNS2 Display selection Transmission wire of Self diagnosis centralized control SWU2 SWU1 Address setting CNS1 f Indoor outdoor unit CNLVB connecting wire Electronic expansion Valve CNLVA Electronic expansion Valve CN3S Input of demand control CN2 Connect to the outdoor power circuit board 0 0 Power circuit board Transmitting signal to the outdoor multi controller circuit board 63H BO zero cross ign z Zero cross signa High pressure switch 0 5 V DC CN3D Not used Input of demand control 16 V DC 16 V DC TH2 Thermistor lt HIC pipe gt 2 CNAC Power supply for outdoor TH4 Thermistor multi controller circuit board Compressor 220 240 V AC TH3 Thermistor Outdoor liquid pipe TH7 TH6 Thermistor Ambient Suction pipe 63HS High pressure sensor 63LS Low pressure sensor SV1 Bypass valve pin4 of PC511 or PC512
96. OCH576 90 6600 Duplex address error Abnormal if 2 or more units with the same address are existing D There are 2 units or more with the same address in their controller among outdoor unit indoor unit Fresh Master Lossnay or remote controller Noise interference on indoor outdoor connectors eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Search for a unit with the same address as the source of abnormality Is there any unit with the same Yes Correct the address and turn the power address OFF of indoor outdoor unit Fresh Master or Lossnay simultaneously for 2 minutes or more then turn the power back ON Turn the power back ON I Malfunction of sending receiving circuit on Does it operate normally alfunction of sending re g indoor outdoor unit is suspected Yes There is no abnormality on the AC unit It might be caused by an external noise so check the transmission line to remove the factor s OCH576 91 6602 Transmission processor H W error Abnormal if the transmission line shows 1 although the transmission DA transmitting data collision occurred because of a processor transmitted O wiring work or polarity change has performed while the power is ON on either of the indoor outdoor unit Fresh Master or Lossna
97. OTOS 9 Removing bypass valve coil SV1 and bypass valve Photo 11 1 Remove the service panel See Photo 1 Electronic expansion 2 Remove the top panel See Photo 1 Bypass valve valve coil LEV B 8 Remove 3 right side panel fixing screws 5 x 12 in the rear coil fixing screw Bypass valve of the unit and remove the right side panel coil SV1 4 Remove the bypass valve coil fixing screw M4 x 6 i 5 Remove the bypass valve coil by sliding the coil upward W D S erone 6 Disconnect the connector SV1 gray on the multi controller k 1 s circuit board in the electrical parts box Nor NZ 7 Remove the electrical parts box See photo 5 e T w Bypass valve 8 Recover refrigerant i n 9 Remove the welded part of bypass valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note3 When installing the 4 way valve cover it with a High ReH wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized CIT mu ME d Ee ene 10 Removing the high pressure switch 63H and high pres sure sensor 63HS 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Pull out the lead wire of high pressure switch
98. P140YKM BS Capacity Applicable City multi indoor unit Type 15 to Type 125 Type 15 to Type 140 Via branch box Type 15 to Type 100 indoor unit Number of units Via branch box Citymulti indoor Via branch box Citymulti indoor Citymulti indoor 1 branch box 5 5 5 Via branch box 5 5 5 3 8 3 70r8 3or2 8 6 3 to 16 2 kW 7 1 to 18 2 kW 8 0 to 20 2 kW 50 to 13096 of outdoor unit capacity 1 When connecting 7 indoor units via branch box connectable citymulti CMY Y62 G E CMY Y64 G E CMY Y68 G E indoor units are 3 connecting 8 indoor units via branch box connectable citymulti indoor units are 2 Branch header Branch header Branch header 2 branches 4 branches 8 branches CONNECTION KIT PAC LV11M J M series S series P series M series indoor unit 2 branch box Total system wide capacity PAC MK30BC 3 branches MAX 3 units PAC MK50BC 5 branches MAX 5 units Brabch box Branching pipe Number of branches components Citymulti indoor units 2 indoor units 2 M NET MA remote remote controller controller M NET MA M series remote remote remote controller controller controller 2 Refer to 2 1 UNIT CONSTRUCTION for more detail OCH576 O S S s ss s s s s s j 2 4 UNIT SPECIFICATIONS 1 Outdoor Unit Service Ret PUMY P112VKM1 BS PUMY P112
99. Pad E Nc 20 amp CONTINUOUS t NC 20 amp CONTINUOUS T i i i NOISE 10 1 I 1 8 10 T 1 t 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz MODE SPL dB LINE PUMY P140VKM1 BS COOLING 51 eo PUMY P140YKM1 BS HEATING 53 e e 90 S 4 sl D E bs Es Ss T E ES Ki S 80 e e m 70 e m Kl tr 60 Lu gt Lu l W 50 D MICROPHONE UI a im a 5 UNIT Q 30 Ze a z r 2 F a 20 APPROXIMATE Lu THRESHOLD OF 1 5 gt HEARING FOR om amp CONTINUOUS Oo NOISE 10 T T 63 125 250 500 OCH576 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 21 GROUND mm c inooouy lou Duidid je ee z6 26 no xoouy i A S ajoy Bujdid ue B gt z S e ss 6 N ka 8 red Het 3 z f eh b y y Ib Li e 8 a 8 H 8 Eg i z amp p k no xoouy S aou Bd trond ja gr Ed i S no xoouy oy A GR ino pouy wbi Dou g aloy Buta jddns amod 09 ss lou Burun ubi o a Paar nm nr lou Biyun e SESCH RO90uy OF erou Dain Arddn
100. RENCE DATA Operation PUMY P112VKM YKM1 BS PUMY P125VKM YKM1 BS PUMY P140VKM YKM1 BS Ambient Indoor DB 27 C 19 C 20 C 27 C 19 C 20 C 27 C 19 C 20 C temperature Outdoor WB 35 C 7 C 6 C 35 C 7 C 6 C 35 C 7 C 6 C No of connected units Unit 2 2 2 Indoor unit No of units in operation 2 2 2 Operating Model 50 x 1 63 x 1 63 x 2 63 x 1 80x1 conditions Main pipe 5 5 5 Piping Branch pipe m 2 5 2 5 2 5 Total pipe length 10 10 10 Fan speed Hi Hi Hi Amount of refrigerant kg 7 2 7 2 7 2 Electric current A 16 17 5 26 17 38 5 67 21 67 7 12 21 91 7 22 25 84 8 58 25 54 8 48 Outdoor unit Voltage V 230 400 230 400 230 400 Compressor frequency Hz 67 69 84 86 96 96 oe ind Indoor unit Pulse 357 421 447 525 511 586 Pressure High pressure Low pressure MPa 2 70 0 94 2 86 0 70 2 86 0 88 2 87 0 67 2 95 0 85 2 95 0 65 Discharge 67 0 71 9 69 7 72 1 70 7 73 2 Outdoor Heat exchanger outlet 40 2 2 0 40 8 1 3 43 7 0 9 Temp of unit Accumulator inlet C 8 7 1 0 8 0 0 2 5 6 0 6 each section Compressor inlet 10 7 1 3 9 1 0 1 7 8 0 7 ZEN LEV inlet 18 9 32 4 17 7 33 0 17 0 33 4 Heat exchanger inlet 12 3 55 5 11 1 55 7 10 4 56 8 OCH576 12 4 3 STANDARD CAPACITY DIAGRAM Before calculating the sum of total capacity of indoor units please convert the value into the kW
101. SHOOTING 8 1 CHECK POINTS FOR TEST RUN 8 1 1 Procedures before test run 1 Before a test run make sure that the following work is completed Installation related Make sure that the panel of cassette type and electrical wiring are done Otherwise electrical functions like auto vane will not operate normally Piping related Perform leakage test of refrigerant and drain piping Make sure that all joints are perfectly insulated Check stop valves on both liquid and gas side for full open Electrical wiring related Check ground wire transmission cable remote controller cable and power supply cable for secure connection Make sure that all switch settings of address or adjustments for special specification systems are correctly settled 2 Safety check With the insulation tester of 500 V inspect the insulation resistance Do not touch the transmission cable and remote controller cable with the tester The resistance should be over 1 0 MO Do not proceed inspection if the resistance is under 1 0 MO Inspect between the outdoor unit power supply terminal block and ground first metallic parts like refrigerant pipes or the electrical box next then inspect all electrical wiring of outdoor unit indoor unit and all linked equipment 3 Before operation a Turn the power supply switch of the outdoor unit to on for compressor protection For a test run wait at least 12 hours from this point b Register control systems into remote con
102. TH6 Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wiring connector properly Replace it in case of a breakage Disconnect the connector to check the resistance of TH6 using a tester Is the detected resistance normal Replace the thermistor The detected temperature of TH6 can be displayed by an operation of SW1 on the outdoor multi controller circuit board Check a temperature of TH6 SW1 Setting Display on LED1 2 Unit pan 99 9 999 9 c 12345678 Replace the outdoor multi controller circuit board Malfunction of thermistor circuit Y Is the detected temperature normal Yes No abnormality A connector contact failure is suspected Y OCH576 81 Air inlet thermistor trouble TH21 Liquid pipe temperature thermistor trouble TH22 Gas pipe temperature thermistor trouble TH23 Detected in indoor unit 5101 5102 5103 Abnormal if any of the following thermistor detected to be open short D Contact failure of connectors Characteristic defect of thermistor TH21 Air inlet thermistor Disconnection or contact failure of thermistor TH22 Liquid pipe temperature thermistor Defective indoor controller board TH23 Gas pipe temperature thermistor eDiagnosis of defectives Make sure to turn the power OFF be
103. The model code of the connected indoor OCH576 105 gt unit can be displayed by an operation of SW1 on the outdoor unit Check code 7402 Connecting excessive number of units When the connected indoor unit exceeds the limit a check code lt 7102 gt is displayed Connecting more indoor units than the limit Abnormal if connecting status does not comply with the following limit Connectable up to 12 indoor units 8 Connect at least 1 indoor unit Abnormal if connected none Connectable only 1 ventilation unit eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check whether the connecting unit exceeds the limit or not Remedy Connect less number of units than the Does it exceed the limit Yes Check if at least 1 indoor unit is connected Y limit The model code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit gt Connect indoor unit Is an indoor unit connected Yes Check whether the M NET line to the OCH576 106 indoor unit is connected or not 7105 Address setting error The address setting of outdoor unit is wrong Wrongly set address of indoor unit The outdoor unit is not set in 000 or in the range of 51 to 100 eDi
104. Thermistor Outdoor liquid pipe TH3 Thermistor Compressor TH4 Thermistor Suction pipe Ambient Outdoor TH6 7 High pressure switch 63H High pressure sensor 63HS Low pressure sensor 63LS 4 way valve 2184 Bypass valve SV1 Pull out the disconnected wire from the electrical parts box 5 Remove the terminal cover and disconnect the compressor lead wire OCH576 149 CA Electrical parts box Noise filter Front panel fixing I circuit board NF screws 5x12 Terminal block Outdoor multi controller circuit board MULTI B Terminal block TB3 TB7 di D Ki 4 di ui NM d WU I Ki Ki E L dE om 5x12 fing screws Continue to the next page O O From the previous page OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 6 Remove 2 electrical parts box fixing screws 4 x 10 Photo 5 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Electrical parts box fixing screws 4 Removing the thermistor lt Suction pipe gt TH6 Photo 6 Clamps 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connectors TH6 and TH7 red on the Outdoor multi controller circuit board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box 5 Pull out the thermistor lt Sucti
105. V A E d Linear expansion valve I I I I l I I I I Strainer 3800 qesesd2eso 2sn2cDes Compressor I Thermistor THE lt Heatsink gt EEN Refrigerant flow in cooling Refrigerant flow in heating Pipe temperature thermistor liquid I Capillary TH2 or RT13 tube Indoor units 4 Branch box Outdoor unit 9 unit mm Capillary tube behind LEV in cooling mode PAC MK50BC 4 x 3 0 x L130 x 5 PAC MK30BC 4 x 3 0 x L130 x 3 Branch box Piping connection size B The pipe connection size differs according to the type and capacity of indoor units Match the piping connection size of branch box with indoor unit If the piping connection size of branch box does not match the piping connection size Gas mm of indoor unit use optional different diameter deformed joints to the branch box side Connect deformed joint directly to the branch box side Liquid mm m In case of using 1 branch box Flare connection employed No brazing Branch box B B B B B SS Ess Es Ess E m In case of using 2 branch boxes gt 2 branches pipe joint optional parts gt UJ gt gt Uu UJ Branch box 1 m Installation procedure 2 branch pipe joint Refer to the installatio
106. YKM1 BS PUMY P125VKM1 BS PUMY P125YKM1 BS PUMY P140VKM1 BS PUMY P140YKM1 BS Cooling kW 12 5 14 0 15 5 Capacity Heating kW 14 0 16 0 18 0 2 9 3 5 3 9 Compressor kW Cooling Heating capacity indicates the maximum value at operation under the following condition Cooling Indoor D B 27 C W B 19 0 C Outdoor D B 35 C Heating Indoor D B 20 C Outdoor D B 7 C W B 6 C 2 Method for identifying MULTI S model m Indoor unit When using Model 80 gt m Outdoor unit When using model 125 gt P L F Y P 80 V BM E PU Mk P 125 Y K MRI BS i sub owe meet Subiunbe Oudoruni Den be L Ceiling cassette R410A M NET K Wall mounted type commonness MULTI S control E Hidden skylight type BM Frequency Salt proof C Ceiling suspended type Frequency CM conversion Outdoor unit D M Ceiling cassette type conversion KM M NET controller model type F Floor standing type controller M control Power supply W Air to Water Unit KM LMD Indicates equivalent V Single phase NEW frequency converter to Cooling capacity 220 230 240 V 50 Hz one to many air conditioners k cal h Y 3 phase flexible design type Power supply 380 400 415 V 50 Hz V Single
107. again e Returning to the normal mode after completing entry Press the FILTER and 9x buttons simultaneously and hold for 2 seconds to return to the normal mode Figure 1 A Group setting display Figure 2 Normal completion of entry Figure 3 Entry error signal moe moe meee Ott INDOOR UNIT ADDRESS NO o INDOOR UNIT INDOOR UNIT ADDRESS NO o ADDRESS NO Type of unit is displayed Flashing 88 indicates entry error b Paired Settings Turn off the remote controller Press the remote controller s ON OFF button to turn it off the indicator light will go off e Put in indoor unit address display mode Press the FILTER and Ss buttons on the remote controller simultaneously and hold for 2 seconds Note The above steps are the same as when making group settings A Changing to the linked operation unit address display state The display shown in Figure 4 will appear when the r so button on the remote control is pressed Displaying the address of the Lossnay unit and linked indoor unit In this situation the indoor unit number will be the lowest address of the group The Lossnay unit will not operate if this setting is incorrect Notes 1 If the temperature adjustment C4 2C v buttons are pressed the address may be changed to the indoor unit that are to be linked 2 If the time setting C4 2C Y D buttons are pressed the address of the linked units may be changed to the address where it is desir
108. age on both ends of the branch connector Is 200 V AC output gt s E connector for breakage gt Replace the drain pump OCH576 69 2503 Drain sensor models Drain sensor abnormality Drain sensor models Abnormal if drain sensor detects to be short open D Contact failure of connector CN31 Characteristic defect of thermistor Breakage or contact failure of drain sensor wiring Replace the indoor controller board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Drain sensor models for disconnection or looseness Check the drain sensor connector CN31 Connect it properly Is it connected normally gt Turn the power back ON then check the operation Yes Y Is the resistance of thermistor normal gt Replace the drain sensor Yes How to check the resistance gt Replace the indoor controller board Disconnect the connector for drain sensor from the indoor controller board to check the resistance using a tester oc 6 0 kQ 10 C 3 9 kO 20 C 2 6 kQ 25C 2 2 kQ 30 C 1 8 kO 40 1 3 kO 60 C 0 6 kQ Resistance kQ lt Drain Sensor gt 20 0 20 40 60 80 Temperature C OCH576 70 4100 Compressor current interruption Locked compressor
109. age while in heating operation Refrigerant liquid accumulation in compressor while indoor unit is OFF thermo OFF eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is 5101 displayed when restarted Yes gt Refer to the diagnosis of check code 5101 5101 1102 Is the outdoor stop valve liquid gas fully open Open the stop valve liquid gas fully Yes Repair the refrigerant leakage Is there a refrigerant leak no leak Check the connection for thermistor wiring and indoor controller board connector Is there any abnormality on connectors wires such as a disconnection Yes half disconnection or breakage Y Continue to the next page Connect the connector properly Repair or replace it in case of a breakage Y OCH576 48 Check code 1102 Compressor temperature trouble eDiagnosis of defectives Chart 2 of 2 Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Disconnect the thermistor wiring to check the resistance Is there a resistance detected Check the voltage and appearance of the outdoor multi controller circuit board
110. agnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check whether the outdoor unit address is set in 000 or in the range of 51 to 100 Set the address properly then turn the power OFF of indoor outdoor unit Fresh Is the address setting correct gt Master Lossnay and remote controller simultaneously for 2 minutes or more and turn the power back ON Yes Replace the outdoor multi controller circuit board OCH576 107 8 2 REMOTE CONTROLLER DIAGNOSIS For M NET remote controller system If the air conditioner cannot be operated from the remote controller diagnose the remote controller as explained below D First check that the power on indicator is lit O na If the correct voltage 12 V DC is not supplied to the remote controller the SELF CHECK M indicator will not light If this occurs check the remote controller s wiring and the indoor unit NEZ e L Power on indicator Switch to the remote controller self diagnosis mode Press the FILTER button to start self diagnosis Press the CHECK button for 5 seconds or more The display content will change as shown below SELF CHECK SELF CHECK a KI RE SS ll I Remote controller self diagnosis result When the remote controller is functioning correc
111. al Parts Box NE E ERE ACLS j Cautions when Servicing NWARNING When the main supply is turned off the voltage 570 V in the main capacitor will drop to 20 V in approx 5 xl supuso ly UNE position minutes input voltage 400 V When servicing make sure that LED1 LED2 on the outdoor circuit board goes out and then MODELS SW4 SW8 wait for at least 5 minute ON ON Components other than the outdoor board may be faulty Check and take corrective action referring to the service manual CUNCTI ES pelvis T n Do not replace the outdoor board without checking PUMY P125YKM1 lot Dived E De ee PuMy P14oyKM P NBN 1 Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit 123456 12 Self diagnosis function The indoor and outdoor units can be diagnosed automatically using the self diagnosis switch SW1 and LED1 LED2 LED indication found on the multi controller of the outdoor unit LED indication Set all contacts of SW1 to OFF Example 2 During normal operation Nn dn dd and The LED indicates the drive state of the controller in the outdoor unit DEG S uring cooling Bit 1 2 3 4 5 6 7 8 12 3 4 s 6 7 8 Indication Ge 52C 2184 svt SV2 _ Always lit H H H H 3 When fault requiring inspection has occurred The LED alternately indicates the inspection c
112. ally i XI i External output adapter PAC SA88HA E Max 10m I il i HA wii sni CN51 Outdoor unit control board pd E 4 fol i L i 3 o i Ld x il i gt i Li Error display lamp e CREE Dd L2 Compressor operation lamp Ir i l i X Y Relay Coil standard of 0 9W or less for 12 V DC l i ee EE X Y Relay 1 mA DC 6 e Auto change over CN3N gon 3 Eed 2 i e E Remote control panel Relay power supply i I i t I Relay circuit Procure locally i Swi X ii 1 gi CN3N External input adapter PAC SC36NA E Max 10m Xx i i Outdoor unit control board i i i L204 I SW2 i Y ii Zeji ON OFF E d i 1 oN TT Y i l SW1 Heating Cooling ii i SW2 Validity of SW1 Invalidity of SW1 MENU EE SERE ebe d 4 gt e Silent Mode Demand Control CN3D esee us Lu Bh s i i i Remote control panel Relay power supply i 1 Ti i Relay circuit Procure locally i SW1 i i i X X 1 qi CN3D External input adapter PAC SC36NA E Max 10m ie E n Outdoor unit control board i SW2 i i 3 lol E 9 pe E i S Ge We RP d gt The silent mode and the demand control are selected by switching the DIP switch 9 2 on outdoor controller board It is possible to set it to the following power consumption compared with ratings by setting SW1 2 Outdoor controller board DIP SW9 2 SW1 SW2 Function Silent m
113. and its outdoor unit in same refrigerant system Forced outdoor unit stop cannot be released by remote controller OFF Note Above mentioned and Q are detected independently Malfunction of drain pipe is constantly detected during drain pump operation Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe Water drops on drain sensor Drops of drain trickles from lead wire Clogged filter is causing wave of drain Defective indoor controller board Both of above mentioned and the indoor linear expansion valve full closed failure leakage happens synchronistically Note Address Attribute displayed on the remote controller shows the indoor unit which is the cause of trouble eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Start cooling operation Does the drain pump work Is the drain level unusually high Is there an adhesion of water drops on the drain sensor Yes Y Y Continue to the next page i gt Remove water drops Remedy Check the drain discharge system for Dirty drain pan needs to be cleaned Clogged drain pump Clogged or reverse connection of drain pipe Solve the problem Remove foreign substance such as dusts OCH576 65 Drain sensor models
114. aracteristic defect of thermistor Defective outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the wiring and connector connection of TH3 Is there any abnormality such as a disconnection looseness or breakage The black square m indicates a switch position Remedy Disconnect the connector to check the resistance of TH3 using a tester Is the detected resistance normal Yes Y Connect the wiring connector properly Replace it in case of a breakage Check a temperature of TH3 Is the detected temperature normal Yes Replace the thermistor The detected temperature of TH3 can be displayed by an operation of SW1 on the outdoor multi controller circuit board SW1 Setting Display on LED1 2 Unit ON OFF amat 12345678 99 9 999 9 c Y Replace the outdoor multi controller circuit board Malfunction of thermistor circuit OCH576 83 Y No abnormality A connector contact failure is suspected Check code 5106 Ambient thermistor TH7 open short Abnormal if TH7 detects to be open short D Disconnection or contact failure of connectors Open 40 C or less I Characteristic defect of thermistor
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116. ation signal error 4230 Heat sink temperature 4250 4400 Rotational frequency of outdoor fan motor Air inlet thermistor trouble TH21 or O Compressor temperature thermistor TH4 open short Liquid pipe temperature thermistor trouble TH22 Suction pipe temperature thermistor TH6 open short 5103 Gas pipe temperature thermistor trouble TH23 5105 Outdoor liquid pipe temperature thermistor TH3 open short 5106 Ambient thermistor TH7 open short 5109 HIC pipe temperature thermistor TH2 open short 5110 Heat sink temperature thermistor TH8 open short 5201 5202 5300 5101 Check delay code 1205 Check delay code 1221 Check delay code 1222 Check delay code 1214 ee O 5701 Contact failure of drain float switch 6600 Duplex address error O aa O x O O 6602 Transmission processor hardware error O O em O O O O O O O 6603 Transmission bus BUSY error Signal communication error with transmission processor Only M NET Remote controller is detected 660 Oo Only M NET Remote controller is detected 6607 No ACK error Only M NET Remote controller is detected 6608 i Only M NET Remote controller is detected 6831 MA communication receive error no receive signal 6832 6833 6834 7100 7101 Capacity code error C 7102 onnecting excessive number of units 7105 Address sett
117. cable length m1 and m1 m2 m3 and m1 m2 m3 m4 S 200 m 0 3 to 1 25 mm Permissible Length M IC 03 TeV TB5 mes We ii ae Es e Power Suppl Si System zr controller Prohibited items Group Group Shielded Wire Sub MA Remote Controller Address example Never connect together the terminal blocks TB5 for transmission wires for M NET control indoor units M IC that have been connected to different outdoor units OC M NET remote controller and MA remote controller cannot be connected with the M NET control indoor unit of the same group wiring together OCH576 37 SS l E Example of a system using Branch Box and A Control indoor unit Branch Box OC 53 Q mm TB3
118. ch indoor unit with the termi nal block TB6 for M NET the remote controller M NET RC c Set the address setting switch on outdoor unit P C B as shown below pee Method M NET control indoor unit M IC 001 to oof Use the smallest address of all Outdoor unit OC 051 to 100 the indoor unit plus 50 contol M NEN RC 101 to 150 Indoor unit address plus 100 2 Operation using 2 M NET remote controllers OC 51 01 TBS TB7 TBS TB15 Using 2 M NET remote controllers for each M NET control indoor unit M NET RC M NET RC M NET RC M NET RC Main Sub Main Sub a Same as above b Same as above c Set address switch on outdoor unit P C B as shown below OM NET aii Use the smallest address of all Outdoor unit OC 051 to 100 the indoor units plus 50 Main M NET Remote Controller 101 to 150 Indoor unit address plus 100 M NET RC Sub M NET Remote Controller 151 to 200 Indoor unit address plus 150 M NET RC 3 Group operation 51 02 TB3 TB7 TBS TB15 Mgs Mis ls Multiple M NET control indoor units operated together by 1 M NET remote controller a Same as above b Connect terminals M1 and M2 on transmission cable termi nal block TB5 of the M IC main unit with the m
119. comes 100 if it is set as 01 50 MA Remote Controller Address setting is not necessary Wiring Method Address Settings A IC 01 to 50 Branch Box 01 to 50 Outdoor Unit 51 to 100 OCH576 40 pt Name Symbol and the Maximum Units for Connection Longest length via outdoor unit M NET cable L1 L2 L3 and L1 L2 L3 L4 L5 500 m 1 25 mm2 or more Longest transmission cable length M NET cable L1 L2 and L3 L4 and L5 200 m 1 25 mm2 or more Longest transmission cable length A Control cable L6 25 m 1 25 mm2 or more Remote controller cable length m1 200 m 0 3 to 1 25 mm2 Permissible Length Branch Box 5 Branch Box System controller Prohibited items 8 Shielded wire Address example Plural indoor units cannot be operated by a single remote controller Different refrigerant systems cannot be connected together M NET Remote controller cannot be connected to this system OCH576 41 8 TROUBLE
120. ction one read by the LED1 and 2 and the one at circuit is suspected the testpoints listed above is large Replace the outdoor power circuit board Defective outdoor power circuit board Check the power supply facility Check if a receiving electricity is lowered OCH576 76 4230 Heat sink temperature trouble Abnormal if TH8 detects a temperature outside the specified range during DBlocked outdoor fan compressor operation Malfunction of outdoor fan motor amp Blocked airflow path TH8 Thermistor Heat sink Rise of ambient temperature Characteristic defect of thermistor amp Malfunction of input circuit on outdoor power circuit board Malfunction of outdoor fan driving circuit eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is 5110 displayed when restart b gt Refer to the diagnosis of check code 5110 Does the fan rotate during compressor operation gt gt Refer to the diagnosis of check code 4400 Is there any obstacle which blocks an airflow around the heat Improve the airflow path sink air path blocked no obstacle Check the wiring and connector connection TH8 Is there any abnormality such Connect the wiring connector pr
121. cuit board OCH576 58 1501 Refrigerant shortage trouble Chart 1 of 2 1 Abnormal when all of the following conditions are satisfied 1 The compressor is operating in HEAT mode 2 Discharge super heat is 80 C or more TH7 TH3 lt 5C 4 The 63HS detects below 2 04 MPa 2 Abnormal when all of the following conditions are satisfied 1 The compressor is in operation 2 When cooling discharge superheat is 80 C or more When heating discharge superheat is 90 C or more The High pressure sensor detects below 2 32 MPa eDiagnosis of defectives 3 Difference between TH7 and the TH3 applies to the formula of Defective operation of stop valve not fully open Defective thermistor Defective outdoor multi controller circuit board Indoor LEV performance failure Gas leakage or shortage Defective 63HS TH3 Thermistor Outdoor liquid pipe TH7 Thermistor Ambient LEV Electronic expansion valve 63HS High pressure sensor Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is the outdoor stop valve ball Open the stop valve ball balve fully gt Repair the refrigerant leak valve fully open Is there a refrigerant leak Yes leaking no leaking Is 5104 displayed when restart Yes 5104 1501 Check relevant thermistor wirings a
122. d separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Branch header 4 branches CMY Y64 G E Branch header 8 branches CMY Y68 G E W Select Each Section of Refrigerant Piping 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d Each Section of Piping Select the size from the table to the right 1 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch Out door Unit Piping Diameter 2 Refrigerant Piping Diameter In Section Piping Diameter From Branch to Indoor Unit Indoor Unit Model Piping Diameter mm Model number Piping Diameter mm PUMY P112 49 52 Liquid Line 46 35 Liquid Line 50 or lower Gas Line 612 7 PUMY P125 PUMY P140 15 88 Gas Line Liquid Line 29 52 63 to 140 Gas Line 15 88 Note When connecting the CONNECTION KIT PAC LV11M J and an M series indoor unit refer to the installation manual for the CONNECTION KIT when selecting the pipe size and piping length m Additional refrigerant charge Refrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory Therefore charge each refrigerant piping system with additional refrigerant at the installation site In addition in order to carry out service enter the size and length
123. defining the rated capacity total capacity and rated input under the standard condition in standard piping length 5 m as 1 0 r Standard Condong Indoor D B 27 C WB 19 C Outdoor D B 35 C Indoor D B 20 C Outdoor D B 7 C W B 6 C Use the rated capacity and rated input given in 4 3 STANDARD CAPACITY DIAGRAM The input is the single value on the side of the outdoor unit the input on the sides of each indoor unit must be added to obtain the total input Rated cooling capacity Rated heating capacity 2 The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in 1 by the ratio between the individual capacity at the rated time and the total capacity at the rated time individual capacity at the rated time Individual capacity under stated conditions total capacity under the stated conditions x pos ind total capacity at the rated time 3 Capacity correction factor curve PUMY P112 125 140VKM1 BS PUMY P112 125 140YKM1 BS Figure 1 Figure 2 Cooling performance curve Heating performance curve 1 4 1 4 Cooli ooling T Capacity 1 2 95 12 ratio 20 1 0 1 0 19 Heating 0 8 0 8 18 Capacity 0 6 ratio 06 16 INDOOR INDOOR 14 0 4 Cooling lt W B C gt lt D B C gt Power consumption 1 2 24 1 4 ratio 22 1 0 1 2 x Heating 0 8 19 18 Power 0 consum
124. dsiq apow ejdsiq 829SVEC l Dumes LMS 123 OCH576 oDueuo eDeyo 1dio281 0 enp o1juoo uonoeJ00 ZH NEI oDueuo eDeyo dee jo urenseJ ZH eseeJoep HE OA 0 ANP o3uoo uonoeu09 ZH XEl uonuoe aJd eseoJoep eDejoA 1die29J JO UODO ZH 03009 ju amp uno 1ndu 01009 1u amp uno ndu J031u00 1ueuno fuepuooes 041000 1ue uno fdepuooes o1 uoo uonue eiJd 1eeu Je o JUIS L H JoJ1uoo uonue eJd Eau Je o xuis YEOH L nss d eDJeuosip Jo esu jeuuouqe sureJseJ JEU o41u0 101 U09 pd Jo esu jeuuouqy A 8A Ssed q Aq 01 U09 ZH J03u09 AS po1oojop uomneju enyeJeduue eDyeuosip Aq ou1uo9 ZH j041u09 eunje1eduue 10sseJduo5 s jfeuuouqe Qquvoa H3MOd uomneiuui eynsseJd Aq joguoo ZH J04u09 eunsseJd eD1euosiq Jo 10sseooJdoJottu jJu uoo Sp1J0M Ilonuoo zH ocu nb u ioss iduuoo Jo e S ueuw ejnjeJeduie 6 666 10 6 66 uedo uous 6666 6 66 jeued jojeipereu OOLLOOLL papeyep s Uni quvog suuv 6 666 0 und Posseooronw OOLLOOLO OG UguN enfe 1910 puoo9s U L Ayyewuouge uoioe1oud Mumm Ayyeuuouge ainpow Ia ypeuuouge 9H L U ZO1J uopeuucosp aen Kener Aypeuuouqe OJH een indui uonoejoJd 00LL0001 6v vonue eld eueuo eDejoA jd eoo1 joJjuoo9 oguoo jue uno Dip uonueAeJd z jojjuoo Aouanba y DUU PHS
125. e Longest length via outdoor units Li L2 L3 L4 L1 L2 L3 L5 L1 L2 L6 L7 500 meters 1 25 mm e Longest transmission cable length L1 L3 L4 L3 L5 Le L2 L6 L7 200 meters 1 25 mm M NET Remote controller cable length 21 22 2 3 4 S 10 meters 0 5 to 1 25 mm If the length exceeds 10 meters use a 1 25 mm shielded wire The length of this sec tion Ls should be included in the calculation of the maximum length and overall length Permissible Length OC 51 TB3 TB7 Mis img s l AJB 101 155 M NET RC M NET RC M NET RC Power Supply lt Unit Prohibited items Shielded Wire Sub M NET Remote Controller amp Address example Never connect together the terminal blocks TB5 for transmission wires for M NET control indoor units M IC that have been connected to different outdoor units OC Set all addresses to ensure that they are not overlapped M NET remote controller and MA remote controller cannot be connected with the M NET control indoor unit of the same group wiring together OCH576 33 O C Example of a MA remote c
126. e controller is not fed until the power supply of both indoor unit and outdoor unit is on and the start up of both units is finished normally The power supply of the indoor unit is not on The power supply of the outdoor unit is not on The number of connected remote controller is over the limit Maximum 2 units or the number of connected indoor unit that is over the limit Maximum 16 units The address of the indoor unit is 00 and the address for the outdoor unit is the one other than 00 The transmission line of the indoor outdoor unit is connected to TB15 MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller cable is shorted or down The power supply cable or the transmission line is shorted or down The fuse on the indoor unit controller board is blown PLEASE WAIT keeps being dis played or it is displayed periodically PLEASE WAIT is usually dis played about 3 minutes after the power supply of the outdoor unit is on The power supply of the outdoor unit is not on The power supply of the feeding expansion unit for the transmission line is not on The setting of MA remote controller is not main remote controller but sub remote controller MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller does not operate though ei is displayed OCH576 The power supply of t
127. e not oxidized 12 Removing electronic expansion valve LEV A LEV B 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel Remove the electrical expansion valve coil See Photo 11 12 Remove the electrical parts box See Photo 5 Recover refrigerant Remove the welded part of electrical expansion valve 3 4 5 6 T OCH576 147 OPERATING PROCEDURE PHOTOS 13 Removing the compressor MC Photo 13 1 Remove the service panel See Photo 1 Valve bed 2 Remove the top panel See Photo 1 8 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 4 4 Remove front panel fixing screws 5 5x12 and 2 4 x 10 and remove the front panel See Photo 4 Compressor v j Valve 5 Remove 4 back cover panel fixing screws 5 x 12 and bed fixing remove the back cover panel AN screws 6 Remove the electrical parts box See Photo 5 Separator 7 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed See Photo 4 and 7 8 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 9 Remove 3 separator fixing screws 4 x 10 and remove the separator See Figure 1 10 Recover refrigeran
128. e right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized OCH576 151 OPERATING PROCEDURE PHOTOS 9 Removing bypass valve coil SV1 and bypass valve Photo 11 1 Remove the service panel See Photo 1 Geert Eiectronicrexpansion 2 Remove the top panel See Photo 1 coli fixing screw valve coil LEV B Bypass valve 3 Remove 3 right side panel fixing screws 5 x 12 in the rear coil SV1 of the unit and remove the right side panel 4 Remove the bypass valve coil fixing screw M4 x 6 T J 5 Remove the bypass valve coil by sliding the coil upward Ve NI Anz Electronic 6 Disconnect the connector SV1 gray on the multi controller LS ng expansion circuit board in the electrical parts box if TE valve 7 Remove the electrical parts box See Photo 5 I 1 Hat sL Z Bypass valve 8 Recover refrigerant 9 Remove the welded part of bypass valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov y ehn ing the right side panel UB Low pressure Note3 When installing the bypass valve cover it with a igh pressure st Ei sensor 63LS wet cloth to prevent it from heating 120 C or more switch 63H then braze the pipes so that the inside of pipes are not oxidized 10 Removing the high pressure switc
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130. ed to enter the Lossnay Linking the Lossnay and the indoor unit The display shown in Figure 5 will appear when the TEST RUN button is pressed The indoor unit whose address is displayed and the Lossnay unit with a linked address will operate in a linked manner Notes 1 If it is desired to display the address of the Lossnay in the indoor unit address display the indoor unit address in the linked unit address and the above content will also be recorded 2 Apart from the indoor unit with the lowest address in the group display and enter the addresses of the other indoor unit that are to be linked with the Lossnay unit e Returning to the normal mode after completing entry Press the FILTER and xz4 buttons on the remote controller simulta neously and hold for 2 seconds to return to the normal mode Figure 4 B Making paired settings Figure 5 Completing normal entry XR pna d INDOOR UNIT ERROR CODE ADDRESS NO OA UNIT ADDRESS NO O ERROR CODE OA UNT ADDRESS NO INDOOR UNIT ADDRESS NO These alternating IC or LC displays will appear when entry is completed normally o The addresses of indoor ee unit and linked units are display A flashing 88 will appear if there is a displayed simultaneously Ts problem with the entry indicating that the Aus unit does not exist a H i ADORESSNO VE OCH576 44 pt 2 Address check Refer to secti
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133. er circuit board 0 5 V DC Zero cross signal 0 5 V DC Not used 16 V DC 16 V DC 6 6 0 0 0 0 G OCH576 120 M NET power circuit board PUMY P112VKM1 BS PUMY P112YKM1 BS PUMY P125VKM1 BS PUMY P125YKM1 BS PUMY P140VKM1 BS PUMY P140YKM1 BS CN2 Connect to the outdoor multi controller circuit board CN102 24 30 V DC m a lu TB1 z Connect to the electrical parts box IEC127 TIAL250V UL 1A 250V Ce Connect to the outdoor noise filter circuit board CNAC1 Y Connect to the outdoor power circuit board CNAC1 V 220 240 V AC OCH576 121 SS Outdoor noise filter circuit board PUMY P112YKM1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS LI1 US LI3 NI CNAC1 POWER SUPPLY 220 230 240 V AC LI1 LI2 LI2 LIS LI3 LI1 380 400 415 V AC input Connect to the M NET power circuit LI1 NI LI2 NI LI3 NI 220 230 240 V AC input board CN1 Connect to the terminal block TB1 Q J qwnu 1o 3W Y31714 3SION NDIOL O3N yew opea JoyeW god GD1 Connect to the elec trical parts box y L1 1a9 LH WO o 9 I aps Connect to the electrical parts box CNAC2 220 230 240 V AC Connect to the out door multi controller circuit board CNAC LA9ZAO AOYAO L od ZE dai wh TIT d 1 CNDC Connect to the outdoor multi controller circuit board CNDC CNL BLUE S NCT Connect
134. et temperature on the remote controller represents the target temperature of the outlet water Indoor side intake water temperature OCH576 3 SPECIFICATIONS Model PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS Power source 1 phase 220 240 V 50 Hz Cooling capacity kw 12 5 14 0 15 5 Nominal kcal h 10 750 12 040 13 330 BTU h 42 650 47 768 52 886 Power input kW 2 79 3 46 4 52 Current input A 12 87 12 32 11 80 15 97 15 27 14 64 20 86 19 95 19 12 COP kW kW 4 48 4 05 3 43 Temp range of Indoor temp W B 15 to 24 C cooling Outdoor temp D B 5 to 46 C Heating capacity kw 14 0 16 0 18 0 Nominal kcal h 12 040 13 760 15 480 BTU h 47 768 54 592 61 416 Power input kW 3 04 3 74 4 47 Current input A 14 03 13 42 12 86 17 26 16 51 15 82 20 63 19 73 18 91 COP KW kW 4 61 4 28 4 03 Temp range of Indoor temp D B 15 to 27 C heating Outdoor temp W B 20 to 15 C Indoor unit Total capacity 50 to 130 of outdoor unit capacity connectable Model Quantity Citymulti 15 125 9 15 140 10 15 140 12 Branch box 15 100 8 15 100 8 15 100 8 Mixed system 15 125 3 10 15 140 10 4 15 125 10 4 Sound pressure level dB A measured in anechoic room 4931 s0 sz 51 53 Power pressure level dB lt A gt S measured in anechoic room Refrigerant Liquid p
135. etects to be in the water during cooling or dry operation To release this abnormality reset the power turn OFF and ON TH21 Indoor intake temperature thermistor TH22 Indoor liquid pipe temperature thermistor TH23 Indoor gas pipe temperature thermistor Reverse connection of extended piping when connecting multiple units Reverse connection of indoor outdoor connector Defective thermistor of TH21 or TH22 23 Defective drain sensor or float switch Defective drain pump Poor drainage Clogged drain pump Clogged drain pipe eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Are there 2 or more Yes Are the refrigerant piping indoor units with different and the indoor outdoor connector refrigerant connected connected in the same unit Yes Start heating operation Solve the reverse connection or connect the connectors properly Check the temperature of TH22 23 if they are within appropriate range Are they within the range In heating operation The temperature difference between the intake and blowing air Approx 14 to 30C Piping temperature Approx 40 to 55 C Turn ON the emergency operation switch SWE Note on the operating condition The temperature may differ depending P Does the drain pump work
136. fore connecting disconnecting any connectors or replacing boards Diagnosis Check the connection of thermistor wiring for looseness or disconnection Is it connected properly Connect the wiring properly x edd gt z Replace he thermistor gt Replace the indoor controller board lt Thermistors for low temperature gt m Check code and trouble Check code Thermistor Connector Trouble CN20 Air inlet thermistor trouble T 21 102 CN44 CN21 Liquid piping temperature thermistor trouble 5103 TH23 CN44 CN29 Gas piping temperature thermistor trouble m Thermistor characteristic Turn the power OFF to remove the connector for the thermistor then check the resistance with a tester At the ambient temperature 10 to 30 C 4 3 to 9 6kQ Open or short ud aw Symbols for thermistors and connectors may be different depending on the model Please refer to its wiring diagram OCH576 82 5105 Outdoor liquid pipe temperature thermistor TH3 open short Abnormal if TH3 detects to be open short The open short detection is disabled during 10 sec to 10 min after compressor starts during defrosting operation or for 10 min after returning from the defrosting operation Open 40C or less Short 90 C or more TH3 Thermistor Outdoor liquid pipe Disc onnection or contact failure of connectors Ch
137. g the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder for R410A on the market is a syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only for R410A Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over Charge hose Only for R410A Use pressure performance of 5 09MPa G or over Electronic scale Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment 1 2 PRECAUTIONS FOR SALT PROOF TYPE BS MODEL Although BS model has been designed to be resistant to salt damage observe the following precautions to maintain the performance of the unit 1 Avoid installing the unit in a location where it wi
138. gth Li L2 S 200 m 1 25 mm MA remote controller cable length 23404 05 6S 200m 0 3 to 1 25 mm 00 TBS TB15 2 MA RC Main MA RC Main Sub 3 MA remote controller or more cannot be connected with the M NET contrl indoor unit of the same group M IC 00 TBS TB15 MA RC MA RC Main MA RC Sub Longest transmission cable length L1 L2 200 m 1 25 mm MA remote controller cable length 7 83 200 m 0 3 to 1 25 mm OCH576 The second MA remote controller is con nected with the terminal block TB15 for the MA remote controller of the same M NET control indoor unit M IC as the first MA remote control 00 TB5 TB15 00 TB5 TB15 35 D Example of a group operation with 2 or more outdoor units and a MA remote controller Address settings are necessary M TB5 TB15 i TB15 Milvd s RTAL s 5 ie
139. h 63H and high pres sure sensor 63HS 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Pull out the lead wire of high pressure switch and high pres sure sensor High pressure 5 Remove the electrical parts box See Photo 5 sensor 63HS 6 Recover refrigerant 7 Remove the welded part of high pressure switch and high pressure sensor Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the high pressure switch and high pressure sensor cover them with a wet cloth to Photo 12 prevent them from heating 100 C or more then braze the pipes so that the inside of pipes are not oxidized 11 Removing the low pressure sensor 63LS 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Disconnect the connector 63LS blue on the multi controller circuit board in the electrical parts box b Remove the electrical parts box See Photo 5 6 Recover refrigerant 7 Remove the welded part of low pressure sensor Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by
140. he indoor unit Master is not on The transmission line of the indoor outdoor unit is connected to TB15 The transmission line of the indoor outdoor unit is shorted down or badly contacted The fuse on the indoor unit controller board is blown 110 Check the part where the abnormality occurs The entire system In the entire refrigerant system In same group only 1 indoor unit only In case of the entire system or in the entire refrigerant system Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit In case of in same group only or 1 indoor unit only Check the items shown in the left that are related to the indoor unit pT 8 4 THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE EMERGENCY Symptom Display of remote controller CAUSE Even the cooling heating Cooling Heating blinks The indoor unit can not cool Heat if other indoor units are heating operation selection button Cooling is pressed the indoor unit cannot be operated The auto vane runs freely Normal display Because of the control operation of auto vane it may change over to horizontal blow automatically from the downward blow in cooling in cause the downward blow operation has been continued for 1 hour At defrosting in heating hot adjusting and thermostat OFF it automatically changes over to horizontal blow Fan setting changes during N
141. her refrigerants can be used Tools for other refrigerants can be used Welder and nitrogen gas cylinder Refrigerant charging scale Weld the pipes Refrigerant charge Tools for other refrigerants can be used Tools for other refrigerants can be used Vacuum gauge or thermis tor vacuum gauge and vacuum valve Check the degree of vacuum Vacuum valve prevents back flow of oil and refri gerant to thermistor vacuum gauge Tools for other refrigerants can be used Charging cylinder Refrigerant charge Tool exclusive for R410A X Prepare a new tool Use the new tool as the tool exclusive for R410A A Tools for other refrigerants can be used under certain conditions O Tools for other refrigerants can be used OCH576 2 OVERVIEW OF UNITS 2 1 UNIT CONSTRUCTION KEREN Outdoor unit PUMY P112VKM1 BS PUMY P125VKM1 PUMY P140VKM1 PUMY P112YKM1 BS PUMY P125YKM1 PUMY P140YKM 1 Capacity Type 15 to Type 125 Ge 15 to Type 140 Applicable indoor unit Number of units 1 to 9 unit 1 to 10 unit 1 to 12 unit Total system wide capacity 50 to 130 of outdoor unit capacity 2 3 Po CMY Y62 G E CMY Y64 G E CMY Y68 G E Branching pipe Branch header Branch header Branch header components 2 branches 4 branches 8 branches Cassette Ceiling Ceiling Wall Ceilin Floor standing a Air to Water Mounted 4 way flow 2 way flow Conceale Suspended Concealed dE
142. ical Parts Box POWER SUPPLY L Sillem 60Hz Men N FUN GRN YLW ge Cautions when Servicing NWARNING When the main supply is turned off the voltage 340 V in the main capacitor will drop to 20 V in approx X1 MODEL SELECTION 8 2 minutes input voltage 230 V When servicing make sure that LED1 LED2 on the outdoor circuit board goes out and then geg s poston wait for at least 1 minute N A one Components other than the outdoor board may be faulty Check and take corrective action referring to the service manual PUMY P112VKM1 ofr THI s d Do not replace the outdoor board without checking puMY Pyo5vKMi et m E u NOTES ONI ON 1 Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit PUMY P140VKMI c AMAR o A Self diagnosis function The indoor and outdoor units can be diagnosed automatically using the self diagnosis switch SW1 and LED1 LED2 LED indication found on the multi controller of the outdoor unit LED indication Set all contacts of SW1 to OFF Example 2 During normal operation When the compressor and The LED indicates the drive state of the controller in the outdoor unit SV1 are turned during cooling operation Bit 1 2 3 4 5 6 7 8 123 45 67 8 Atten Compressor i Fan d ld Indication opened 52C 2184 SV1 SV2 Always li
143. ient TH7 Photo 6 Electrical parts box High pressure Thermistor sensor 63HS Suction pipe TH6 I Thermistor N HBP Ball valve and stop valve fixing screws 7 des Thermistor Compressor TH4 5 Removing the thermistor Ambient TH7 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 red on the outdoor multi controller circuit board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box See Photo 6 5 Pull out the thermistor Ambient TH7 from the sensor holder Note When replacing thermistor Ambient TH7 replace it together with thermistor Suction pipe TH6 since they are combined together Refer to procedure No 4 above to remove thermistor Suction pipe TH6 OCH576 145 Photo 8 Lead wire of thermistor lt Ambient gt TH7 Sensor holder OPERATING PROCEDURE PHOTOS 6 Removing the thermistor Outdoor liquid pipe TH3 and Photo 9 thermistor Compressor TH4 thermistor HIC pipe TH2 1 Remove the service panel See Photo 1 2 Disconnect the connectors TH3 white and TH4 white TH2 black on the outdoor multi controller circuit board in the electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electri cal parts box 4 Pull out the thermistor Outdoor liquid pipe TH3 and thermisto
144. ilure amp Malfunction of fan driving circuit SV1 performance failure Defective low pressure sensor Malfunction of low pressure sensor input circuit on outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is the outdoor stop valve liquid gas fully open Does the outdoor fan rotare while the operation 4 Does the indoor fan rotate while the operation d Is the indoor unit short cycled no short cycle 4 Is the indoor unit filter clogged c no clog Continue to the next page gt Open the stop valve liquid gas fully Check the outdoor fan motor Yes gt Refer to How to check the parts on outdoor unit service manual Check the indoor fan motor Refer to How to check the parts on indoor unit service manual short cycled filter clogged Solve the short cycle Clean the filter OCH576 50 Check code 1300 Low pressure trouble eDiagnosis of defectives Chart 2 of 3 Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Continued from the previous page Is there dirt on the indoor heat exchanger as no dirt Is the outdoor unit short cycled c no sho
145. ing Select the size from the table to the right 1 Refrigerant Piping Diameter In Section From Outdoor Unit to Branch box Outdoor Unit Piping Diameter Model Piping Diameter mm PUMY P112 PUMY P125 Liquid Line 9 52 PUMY P140 Gas Line 15 88 Indoor unit series Model number A Liquid pipe B Gas pipe M series or S series 15 to 42 6 35 9 52 50 6 35 12 7 60 6 35 15 88 71 to 80 49 52 15 88 P series 35 50 6 35 12 7 60 to 100 29 52 15 88 Refrigerant Piping Diameter In Section From Branch box to Indoor Unit Indoor Unit Piping Diameter Additional refrigerant charge Refrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory Therefore charge each refrigerant piping system with additional refrigerant at the installation site In addition in order to carry out service enter the size and length of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the Refrigerant amount plate on the outdoor unit Calculation of additional refrigerant charge Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connected indoor units Calculate the additional refrigerant charge using the procedure shown to the right and charge with the additional refrigerant For a
146. ing boards Diagnosis Continued from the previous page gt Set the model selection switch correctly Are they set properly then restart Check whether the compressor is faulty grounded or not Y Replace the compressor Defective compressor Is the compressor faulty grounded Yes Replace the outdoor power circuit board Defective outdoor power circuit board OCH576 72 Check code 4210 Compressor overcurrent interruption Chart 1 of 2 Abnormal if overcurrent of compressor is detected after 30 seconds since the compressor starts operating eDiagnosis of defectives D Closed outdoor stop valve Decrease of power supply voltage 9 Looseness disconnection or reverse phase of compressor wiring connection Malfunction of indoor outdoor fan Short cycle of indoor outdoor unit amp Model selection error upon replacement of outdoor multi controller circuit board Malfunction of input circuit on outdoor multi controller circuit board Defective compressor Defective outdoor power circuit board Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the outdoor stop valve Is the stop valve liquid gas fully open es Check whether the power supply voltage is normal or not Is the power supply voltage normal
147. ing connector properly Replace it in case of a breakage Remove the fan motor by disconnecting the fan motor connector CNF1 and CNF2 then check the voltage of outdoor multi controller circuit board Test points are Voc approx 310 to 350 V DC fan connector 1 4 Vcc approx 15 V DC fan connector 5 4 Is the voltage normal GE the outdoor multi controller circuit Y gt Replace the fan motor OCH576 79 Check code Compressor temperature thermistor TH4 open short lt Detected in outdoor unit gt Abnormal if TH4 detects to be open short D Disconnection or contact failure of connectors The open short detection is disabled for 10 minutes after compressor Characteristic defect of thermistor starts during defrosting operation or for 10 minutes after returning from the defrosting operation Open 3C or less Short 217 C or more TH4 Thermistor Compressor Defective outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards The black square m indicates a switch position Diagnosis Check the wiring and connector connection of TH4 Is there any abnormality such Connect the wiring connector properly as a disconnection looseness or Replace the connector in case of a breakage breakage Disconnect
148. ing error M02 1300 1302 1500 E 4100 E 4230 4250 4400 5108 E 5201 5202 5300 5701 6600 6606 6607 6608 6831 6832 5833 6834 7100 7101 7102 7105 Note When the outdoor unit detects No ACK error No response error an object indoor unit is treated as a stop and not assumed to be abnormal Abnormality for PWFY series Self diagnosis function Example The indoor and outdoor units can be diagnosed automatically using the self diagnosis switch When the compressor and SW1 and LED1 LED2 LED indication found on the multi controller of the outdoor unit SV1 are turned during cooling LED indication Set all contacts of SW1 to OFF operation During normal operation 123 45 67 8 The LED indicates the drive state of the controller in the outdoor unit e CH 3 E 1 dE Compressor Lt im LJ M operated OCH576 46 Check code 0403 Serial communication error Abnormal if serial communication between the outdoor multi controller D Wire breakage or contact failure of connector CN2 or circuit board and outdoor power circuit board is defective CN4 Malfunction of communication circuit to power circuit board on outdoor multi controller circuit board Malfunction of communication circuit on outdoor power circuit board eDiagnosis of defectives Make sure to turn
149. ipe mm in 9 52 3 8 piping diameter Gas pipe mm in 15 88 5 8 FAN 2 Type x Quantity Propeller Fan x 2 Air flow rate m3 min 110 L s 1 833 cfm 3 884 Control Driving mechanism DC control Motor output kW 0 06 0 06 External static press 0 Compressor Type x Quantity Scroll hermetic compressor x 1 Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control Cooling 26 to 100 Cooling 24 to 00 Heating 20 to 100 Heating 18 to 100 Cooling 21 to 100 Heating 17 to 100 Motor output kW 2 9 3 5 3 9 Case heater kW 0 Lubricant FV50S 2 3litter Galvanized Steel Sheet Munsell No 3Y 7 8 1 1 External finish External dimension HxWxD mm 1 338 x 1 050 x 330 25 in 52 11 16 x 41 11 32 x 13 1 Protection High pressure protection High pressure Switch devices Inverter circuit COMP FAN Overcurrent detection Overheat detection Heat sink thermistor Compressor Compressor thermistor Over current detection Fan motor Overheating Voltage protection Refrigerant Type x original charge R410A 4 8kg Control Electronic Expansion Valve Net weight kg Ib 123 271 Heat exchanger Cross Fin and Copper tube HIC circuit HIC Heat Inter Changer HIC circuit Defrosting method Reversed refrigerant circuit Drawing External BK01N346 Wiring BH78B813 Standard Document Installation Manual attachment Accessory Grounded lead wire x2 Joint
150. it controller board is blown Though the indoor unit operates the display of the remote controller goes out soon The power supply of the indoor unit is not on The fuse on the indoor unit controller board is blown is not displayed on the remote controller M NET remote controller is not fed The power supply of the outdoor unit is not on The connector of transmission outdoor power board is not connected The number of connected indoor unit in the refrigeration system is over the limit or the number of connected remote controller is over the limit M NET remote controller is connected to MA remote controller cable The transmission line of the indoor outdoor unit is shorted or down M NET remote controller cable is shorted or down Transmission outdoor power board failure HO keeps being displayed or it is displayed periodically HO is usually displayed about 3 minutes after the power supply of the outdoor unit is on The power supply for the feeding expansion unit for the transmission line is not on The address of the outdoor unit remains 00 The address of the indoor unit or the remote controller is not set correctly MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller does not operate though is displayed The transmission line of the indoor outdoor unit is connected to TB15 The transmission line
151. it in same refrigerant system compressor is inhibited to operate The unit which stops due to detecting abnormality displays 2502 Detection timing of forced outdoor unit stop Constantly detected during unit operation and stop Releasing of forced outdoor unit stop Reset power supply of both abnormal indoor unit and its outdoor unit in same refrigerant system Forced outdoor unit stop cannot be released by remote controller OFF Note Above mentioned D G and are detected independently eDiagnosis of defectives Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe Defective moving part of float switch Foreign matter on the moving part of float switch ex sludge etc Defective float switch Defective indoor controller board Defective driving circuit of drain pump Defective input circuit of float switch amp Both of above mentioned 1 to 5 and the indoor linear expansion valve full closed failure leakage happens synchronistically Note Address Attribute displayed on the remote controller shows the indoor unit which is the cause of trouble Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Start cooling operation Does the drain pump v am Y lt drain level unusually high Y Y Continue to the next page OCH576 68 Remedy Check the drain discharge system for
152. its differ from other indoor units Refer to 2 4 3 Operating temperature range 2 When the indoor unit of Fresh Air type is connected with the outdoor unit the maximum connectable total indoor unit capacity is 11096 10096 in case of heating below 5C 23F 3 When connecting PWFY series Only 1 PWFY P100VM E AU can be connected PWFY P200VM E AU and PWFY P100VM E BU cannot be connected The PWFY unit cannot be the only unit connected to an outdoor unit Select an indoor unit so that the total rated capacity of the indoor units excluding the PWFY unit is 50 to 100 of the outdoor unit capacity 4 When connecting the CONNECTION KIT PAC LV11M J and an M series indoor unit refer to the installation manual for the CONNECTION KIT OCH576 5 SSS 2 2 UNIT CONSTRUCTION BRANCH BOX SYSTEM Outdoor unit PUMY P112VKM1 BS PUMY P112YKM1 BS PUMY P125VKM1 BS PUMY P125YKM1 BS PUMY P140VKM1 BS PUMY P140YKM1 BS 4HP 5HP 6HP Capacity Type 15 to Type 100 Number of units Applicable 2 to 8 units indoor unit Total system wide capacity 24 to 130 of outdoor unit capacity 3 0 to 16 2 kW 21 to 130 of outdoor unit capacity 3 0 to 18 2 kW 19 to 130 of outdoor unit capacity 3 0 to 20 2 kW Branch box Number of units 1 to 2 units that can be connected Connectable indoor unit lineup Heat pump inverter type Capacity class kW Mosel nang 2 5 3
153. ixing screw 2 Remove screws 3 for front 3 for rear 5 x 12 of the top Grille fixing i panel and remove it screws ul Ww I PES senice Slide panel 7 i A Fan grille Grille fixing Screws Service panel fixing screws 2 Removing the fan motor MF1 MF2 Photo 2 Photo 3 1 Remove the service panel See Photo 1 Propeller Front panel Fan motor fixing screws 2 Remove the top panel See Photo 1 3 Remove 4 fan grille fixing screws 5 x 12 to detach the fan grille See photo 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 2 b Disconnect the connectors CNF1 and CNF2 on outdoor multi controller circuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 20 to detach the fan motor See Photo 3 Fan motor fixing screws Removing the electrical parts box Remove the service panel See Photo 1 Remove the top panel See Photo 1 Disconnect the connecting wire from terminal block Electrical parts box Remove all the following connectors from outdoor multi controller LS circuit board E x Outdoor multi con lt Diagram symbol in the connector housing gt Fan motor CNF1 CNF2 Thermistor HIC pipe TH2 Thermistor Outdoor liquid pipe TH3 Thermistor Compressor TH4 e Thermistor lt Suction pipe Ambient Outdoor TH6 7 High pressure switch 63H d l I fat Se High pressure sensor 63HS Front panel n
154. l an earth longer than other cables A Warning Be sure to use specified wires to connect so that no external force is imparted to terminal connections If connections are not fixed firmly it may cause heating or fire Be sure to use the appropriate type of overcurrent protection switch Note that generated overcurrent may include some amount of direct current AN Caution Some installation site may require attachment of an earth leakage breaker If no earth leakage breaker is installed it may cause an electric shock Do not use anything other than breaker and fuse with correct capacity Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire Be sure to install N Line Without N Line it could cause damage to the unit 9 2 WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY 9 2 1 Wiring diagram for main power supply m Schematic Drawing of Wiring When NOT using a Branch Box example PUMY P VKM1 series N 220 230 240 V 50 Hz N 220 230 240 V 50 Hz N 220 V 60 Hz N 220 V 60 Hz lem uN ER PUMY P YKM1 series Note The M NET control indoor unit cannot receive power so tun es for Wiring and Current Leakage supplied from an outdoor unit so provide it with power UIGOOT S separately Branch Box A Control Indoor Unit M NET Control Indoor unit Pull Box LA L2 L3 N 3N 380 400 415 V 50Hz Grounded a Schematic Drawing of Wiring
155. le SS920 M S JO ae sjejep je norued jo uonue dx3 j suonoeuuoo Buum pue Dudu uu iun ay einoas eseajd pepeeu eoeds jo suoisuewig ejdurexe oiseq e swous Mojeq WeJbeIp eu SNOILOFUIG NIHIM Nidld t S1108 NOLLWANNOS 39vdS JOIAYAS yun etg punoiv 39vds 338 OCH576 mm Uni jou Burdid uionog Teno budd 7264 39505 Dujdid 1u014 ram gg s lou ureiq 094 091 WEI WI Sy ingo0ux DEL mr eo pS Bunow 10 apuen et aanas ges amod xoq upugiq au Kee eo 10 puno Ven ou 10 punoit Addns samod eu 10 punog Addns amod OCH 9 103 pue uoneaueouoo 104 Sul UOISS uISUER Su u Artus amod EOF 3uBu oi ye w014 0S01 iofiouuoo jeuruuat oky yog uonepuno4 eBieuosiq AV Seu EAD 9E ZL 2 Bue apen 9g 0 B Z eg 0 Hl ee E 98 28 3 amp i in no i 1653 WOE EIST sz 009 Su orn 40g BEE sajoy paugjou padeys Ne PUMY P112YKMt1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS exelu IN 1694 m EI IN OPIS ino oouy
156. ll be exposed directly to seawater or sea breeze 2 If the cover panel may become covered with salt be sure to install the unit in a location where the salt will be washed away by rainwater If a sunshade is installed rainwater may not clean the panel 3 To ensure that water does not collect in the base of the outdoor unit make sure that the base is level not at angle Water collecting in the base of the outdoor unit could cause rust If the unit is installed in a coastal area clean the unit with water regularly to remove any salt build up If the unit is damaged during installation or maintenance be sure to repair it Be sure to check the condition of the unit regularly Be sure to install the unit in a location with good drainage O O OCH576 3 SS Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series Although the refrigerant piping work for R410A is same as for R22 exclusive tools are necessary so as not to mix with different kind of refrigerant Furthermore as the working pressure of R410A is 1 6 times higher than that of R22 their sizes of flared sections and flare nuts are different Thickness of pipes Because the working pressure of R410A is higher compared to R22 be sure to use refrigerant piping with thickness shown below Never use pipes of 0 7 mm or below Diagram below Piping diameter and thickness Nominal Outside dimensions in diameter mm 1
157. minal lt L1 L2 L3 Power Supply DG 80V Non polar FH BLK X52C BLK LIt LI2 LI NI Connection Terminal L1 L2 L3 Power Supply TB7 B GD1 GD3 ConnectionTerminal Electrical Parts Box gt _____ m Yw 2 i v3 MULTI B Controller Circuit Board SW1 Switch lt Display Selection gt Ma YLW SW2 Switch lt Function Selections T S once sw3 Switch lt Test Run gt FOR CENTRALIZED i SW4 Switch lt Model Selection gt CONTROL i SW5 Switch Function Selection DC 30V Non polar 77 SW6 Switch lt Function Selection gt TB1B SW7 Switch lt Function Selections B1 FUSE SW8 Switch lt Model Selection gt FUSE2 Swe Switch Function Selection SWU1 Switch Unit Address Selection unit digit SWU2 Switch lt Unit Address Selection tens dot CNS1 Connector lt Indoor Outdoor Branch Box TO BRANCH BOX TB1 Outdoor Transmission Line 7 Es soe LA CNS2 Connector Centralized Control Transmission Line gt T RED ss Connector lt Connection For Option gt POWER J wm RED CN3D Connector Connection For Option SUPPLY e 13 8x WHT CN3S Connector lt Connection For Option gt 400V 50Hz CN3N Connector lt Connection For Option gt eser N BLU BLK CN51 Connector lt Connection For Option gt LED1 LED2 LED lt Operation Inspection Display gt LED3 LED lt Power Supply to Main Microcomputer gt ze F1 F2 Fuse lt T6 3AL250V gt X501 505 Relay M NET P B M NET Power Circuit Board TB1 ConnectionTerminal Electric
158. mm to Branch box or Branch Fach PUMY P112 Liquid Une 49 52 header A to E 2 Sections From Branch box or Branch header to Indoor Unit a to j 2 Refrigerant Piping Diameter In Section From Branch box or Branch header to Select the size from the table to the right Indoor Unit Indoor Unit Piping Diameter 1 Section From Outdoor Unit Piping PUMY P140 Gas Line 15 88 i Section of PUMY P125 Indoor unit series Model number A Liquid pipe B Gas pipe CityMulti 15 to 50 6 35 12 7 63 to 140 9 52 15 88 15 to 42 6 35 9 52 M series or 50 6 35 612 7 S series 60 6 35 15 88 71 to 80 9 52 15 88 35 50 26 35 212 7 60 to 100 29 52 15 88 P series Note When connecting the CONNECTION KIT PAC LV11M J and an M series indoor unit refer to the installation manual for the CONNECTION KIT when selecting the pipe size and piping length m Additional refrigerant charge Refer to the same section in the previous page OCH576 141 Mixed Method Connection Examples Connecting to 2 Branch boxes Outdoor Unit First joint Branch header CMY OBranch box PAC MK30 50 CityMulti Indoor unit M S P series Indoor unit Total piping length A B C D E a b c d e f g h i j k 240m Farthest pipi
159. model capacity following the formula on 4 1 1 Method for obtaining system cooling and heating capacity 4 3 1 PUMY P112VKM1 BS PUMY P112YKM1 BS cooling 16 0 14 0 12 0 10 0 8 0 Capacity kW 6 0 4 0 2 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 3 5 3 0 2 5 2 0 Input kW 1 5 1 0 0 5 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 20 0 15 0 10 0 eee Current A lt 1 5 0 uU 0 0 l Total capacity of indoor units kW 6 0 5 0 4 0 Current A A a lt 2 0 me 10 2 0 4 0 6 0 8 0 10 0 12 0 14 0
160. mounts less than 0 1 kg round up the calculated additional refrigerant charge For example if the calculated charge is 6 01 kg round up the charge to 6 1 kg OCH576 Additional Charge Calculation of refrig erant charge Pipe size Liquid pipe 06 35 i Pipe size Liquid pipe 99 52 Total capacity of connected indoor units Amount for the indoor units up to 8 0 kW 1 5 kg m x 19 0 g m m x 50 0 g m 8 1 to 16 0 kW 2 5 kg 16 1 kW or above Included refrigerant amount when shipped from the factory Included refrigerant amount 4 8 kg Example Outdoor model Indoor 1 P63 7 1 kW P40 4 5 kW P125 P25 2 8 kW P20 2 2 kW The total length of each liquid line is as follows 09 52 A a 30 15 45m A 99 52 30m a 89 52 15m b 96 35 10m c 96 35 10m d 96 35 20m 96 35 b c d 10 10 20 40m The total capacity of connected indoor unit is as follows 7 1 4 5 2 8 2 2 16 6 lt Calculation example gt Additional refrigerant charge 19 0 40 x 1000 45 x 100 3 0 6 1 kg rounded up 3 0 kg At the conditions below Outdoor Unit First joint Branch header CMY OBranch box PAC MK30 50 CityMulti Indoor unit M S P series Indoor unit Mixed Method Connection Examples Connecting to 1 Branch box
161. n PUMY P140YKM1 BS 1 Check of DIODE MODULE L1j P1 L2 P1 LS P1 IL1 IN1 L2 N1J ES IN1 2 Check of DIP IPM P2 U IP2 V BZW N2I U IN2 V IN2i IW Note The marks L1 L2 L3 NU N2 P1 P2 U V and W shown in the diagram are not actually printed on the board TB U TB V TB W Connect to the compressor MC TB P3 Voltage among phases Connect to the DCL 10 400 V AC ere manos 000000000000000 Diode module TB P1 ise Si Connect to SS AN Y w w d the DCL c B Set le We YY VHD Sa fi TAB connec d E tor on X52CA Connect to the RS resistor TB L2 wei 70x O O1 TB L3 y ua Connect to the ez outdoor noise filter circuit board L01 L02 L03 400 V AC CN4 CN5 L3OUT L3IN Connect to the out Detection of primary Lead connect door multi controller current Connect to circuit board CN4 the outdoor noise filter circuit board CNCT CN2 CN6 Connect to the outdoor multi controller circuit board CN2 Thermistor Power circuit board Transmitting signal to the Heat sink TH8 outdoor multi controll
162. n manuals of MSDD 50AR E and MSDD 50BR E B B E5 Be BS Branch box 2 OCH576 28 pT m Pipe size Branch box Indoor unit For M or S series Indoor unit Indoor unit type 60 6 35 15 88 Pipe size mm 1 When using 60 type indoor unit of MEXZ series use the flare nut in the indoor unit accessory for the gas side connecting of indoor unit Do not use the flare nut gas side attached to the indoor unit If it is used a gas leakage or even a pipe extraction may occur m Pipe size Branch box Indoor unit For P series Indoor unit Indoor unit type KW Pipe size Liquid mm Gas When using 35 50 type indoor unit of P series use the flare nut for R410A attached to the indoor unit Do not use the flare nut for R407C in the indoor unit accessory If it is used a gas leakage or even a pipe extraction may occur 1 Valve size for outdoor unit For liquid 9 52 mm For gas 15 88 mm 2 Valve size for branch unit Liquid pipe 6 35 mm Gas pipe 9 52 mm Liquid pipe 6 35 mm Gas pipe 9 52 mm Liquid pipe 6 35 mm Gas pipe 9 52 mm Liquid pipe 6 35 mm Gas pipe 9 52 mm Liquid pipe 6 35 mm Gas pipe 12 7 mm 3 branch type is only for A B and C unit Different diameter joint optional parts Fig
163. n sub setting Is there only 1 remote controller suspected gt Set one remote controller to main remote set as the main controller Conduct the Remote Controller Diagnosis 2 or more times Note It takes 6 sec at maximum until the result is displayed Is RC OK displayed on all remote controllers Is RC NG displayed Yes Y Is RC 6832 or ERCO1 to ERC66 Turn the power back ON displayed controller and the other to sub No abnormality It might be caused by an external noise so check the transmission line Replace the remote controller Replace the indoor controller board with 6 minutes Continue to the next page Does HO or Please wait disappear within OCH576 100 the LED2 is blinking 6831 MA communication receive error 6834 Chart 2 of 2 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Continued from the previous page Refer to the chapter Electrical Work Connect the wiring properly as specified in S SD fe cant the chapter Electrical Work in the indoor i j unit Installation Manual c No abnormality It might be caused by an external noise so check the transmission line to remove the factor s OCH57
164. nd connector contacts of the outdoor multi controller circuit board Is there any abnormality on connectors such as a disconnection half disconnection or breakage Disconnect the thermistor wiring and check the resistance Continue to the next page gt Refer to the diagnosis of check code 5104 Connect the connector properly Repair or replace it in case of a breakage OCH576 59 1501 eDiagnosis of defectives Refrigerant shortage trouble Chart 2 of 2 Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Is there a resistance detected Check the 63HS voltage Replace the thermistor Is there a voltage detected Check the voltage and appearance of the outdoor multi controller circuit board Is the voltage normal value Is it free from any trace of over Replace the 63HS heating or burning Disconnect the indoor LEV wiring and check the resistance Y Replace the outdoor multi controller circuit board Is there a resistance detected Replace the indoor LEV Replace the indoor controller board OCH576 60 Check code 1504 Blocked valve in cooling mode
165. necting outdoor units 9 4 WIRING TRANSMISSION CABLES 9 4 1 Types of control cables 1 Wiring transmission cables Types of transmission cables Shielding wire CVVS CPEVS or MVVS Cable diameter More than 1 25 mm Maximum wiring length Within 200 m 2 M NET Remote control cables Kind of remote control cable Shielding wire 2 core CVVS CPEVS or MVVS Cable diameter More than 1 25 mm When 10 m is exceeded use a cable with the same specifications Remarks as transmission line wiring 3 MA Remote control cables Kind of remote control cable Sheathed 2 core cable unshielded CVV Cable diameter 0 3 to 1 25 mm 0 75 to 1 25 mm Remarks Within 200 m Connected with simple remote controller 9 4 2 Wiring examples Controller name symbol and allowable number of controllers Name Symbol Allowable number of controllers Outdoor unit controller OC PUMY P112 1 to 9 units per 1 OC M IC PUMY P125 1 to 10 units per 1 OC PUMY P140 1 to 12 units per 1 OC Indoor unit controller PUMY P112 A IC PUMY P125 1 to 8 units per 1 OC PUMY P140 Branch box 0 to 2 units per 1 OC M NET RC Maximum of 12 controllers for 1 OC Can not be connected if Branch box is used Remote controller RC MA RC Maximum of 2 per group Note that the number of connectable units may be limited by some conditions such as an
166. ng length L1 A E a 85m Farthest piping length Via Branch box L2 A B C k lt 80m Permissible Piping length between outdoor unit and branch boxes A B C D lt 55m length Farthest piping length from the first joint B C or E a 30m One way Farthest piping length after branch box k lt 25m Farthest branch box form outdoor unit A B C lt 55m Total pipong length between branch boxes and indoor units d e f g h i j k S 95m In indoor outdoor section Hz Permissible H 50m In case of outdoor unit is set higher than indoor unit H lt 40m In case of outdoor unit is set lower than indoor unit height In branch box indoor unit section h1 hi h2 lt 15m difference One way n each branch unit h2 h2 15m In each indoor unit h3 h3 12m Number of bends lt 15 1 Branch box should be placed within the level between the outdoor unit and indoor units W Selecting the Refrigerant Branch Kit Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Branch header 4 branches Branch header 8 branches CMY Y64 G E CMY Y68 G E W Select Each Section of Refrigerant Piping 1 Refrigerant Piping Diameter In Section From Outdoor Unit to Branch box or Branch header Out door Unit Piping Diameter
167. nings or in which there are open Opening ings above and below doors that occupy at least 0 15 of the floor area c If the smallest room has mechanical ventilation apparatus that is linked to a household gas detection and alarm device the calculations should be performed for the second smallest room Indoor unit Indoor unit Branch box Outdoor unit i W apparatus J C Indoor unit The smallest The second room smallest room 3 Use the results of calculations 1 and 2 to calculate the refrigerant concentration Total refrigerant in the refrigerating unit kg f f If the calculation results do not exceed the maximum con Maximum concentration kg m centration perform the same calculations for the larger sec The smallest room in which an indoor ond and third room etc until it has been determined that unit has been installed m f Maximum concentration of R410A 0 44kg m nowhere the maximum concentration will be exceeded OCH576 143 11 DISASSEMBLY PROCEDURE PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS Note Turn OFF the power supply before disassembly OPERATING PROCEDURE PHOTOS amp ILLUSTRATION Top panel 1 Removing the service panel and top panel Photo 1 Top panel fixing screws 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service panel Service panel mmg f
168. nit will be 2 8 x 2 5 6 x 2 16 8 The following figures are obtained from the 16 8 total capacity of indoor units referring the standard capacity diagram in 4 3 3 PUMY P125VKM1 BS PUMY P125YKM1 BS lt heating gt PUMY P125YKM1 BS lt cooling gt and 4 3 4 PUMY P125VKM1 BS Capacity kW Outdoor unit power consumption kW Outdoor unit current A 400 V Cooling Heating Cooling Heating Cooling Heating 14 60 16 33 3 51 3 44 5 34 5 23 4 1 2 Method for obtaining the heating and cooling capacity of an indoor unit 1 The capacity of each indoor unit kW the capacity or x model capacity total model capacity of all indoor units 2 Sample calculation using the system described above in 4 1 1 2 During cooling The total model capacity of the indoor unit is 2 8 X 2 5 6 x 2 16 8kW Therefore the capacity of PKFY P25VBM E and PLFY P50VLMD E will be calculated as follows by using the formula in 4 1 2 1 Model 25 14 6 x ee 2 43 kW 16 8 36 4 87 kW Model 50 14 6 x 16 8 OCH576 11 During heating The total model capacity of indoor unit is 3 2 x 2 6 3 x 2219 0 Therefore the capacity of PKFY P25VBM E and PLFY P50VLMD E will be calculated as follows by using the formula in 4 1 2 1 Model 25 16 33 x 2 2 2 75 kW 19 0 6 3 Model 50 16 33 x 5 41 kW 19 0 4 2 STANDARD OPERATION DATA REFE
169. nnecting disconnecting any connectors or replacing boards Diagnosis Is the TH4 wiring disconnected Yes disconnected e connected properly Connect the wiring properly Check the resistance of TH4 0 C 700 kO 10C 410 kQ 20 C 250 kQ 30 C 160 kQ Replace the TH4 Connect the connector properly 40 C 104 KQ Is the resistance normal gt Check the connector contact and wiring of the indoor LEV Is there any abnormality such as a half disconnection or Yes breakage c Disconnect the indoor LEV wiring to check the resistance Continue to the next page or replace the LEV OCH576 57 1500 Superheat due to low discharge temperature trouble Chart 2 of 2 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Is there a resistance detected gt Replace the indoor LEV Check the voltage and appearance of the indoor controller board Is the voltage normal Is it free from any trace of over Replace the indoor controller board heating or burning Check the 63HS voltage Is there a voltage detected Replace the 63HS Replace the outdoor multi controller cir
170. nough to keep the R410A concentration specified by ISO 5149 1 as follows Cuidam Direction _ Of refrigerant flow Maximum concentration Maximum refrigerant concentration of R410A of a room is 0 44kg m accordance with ISO 5149 1 To facilitate calculation the maximum concentration is Branch box expressed in units of kg m kg of R410A per m Maximum concentration of R410A 0 44 kg m ISO 5149 1 Indoor unit All refrigerant of this system will leak out to this room if there is leakage at this indoor unit 10 3 2 Confirming procedure of R410A concentration Follow 1 to 3 to confirm the R410A concentration and take appropriate treatment if necessary 1 Calculate total refrigerant amount by each refrig Note erant system Total refrigerant amount is pre When single refrigeration system consists of several inde charged refrigerant at ex factory plus additional pendent refrigeration circuit figure out the total refrigerant charged amount at field installation amount by each independent refrigerant circuit 2 Calculate room volumes m and find the room with the smallest volume The part with represents the room with the smallest volume a Situation in which there are no partitions b There are partitions but there are openings that allow the effective mixing of air a Branch box Branch box Outdoor unit Outdoor unit Situation in which there are no door ope
171. nsmitted over the transmission line If data errors are found check the transmission line for external noise inter ference Start checking g If the button is pressed after the remote controller check results are displayed remote controller check will end and the remote controller will automatically reboot itself Check the remote controller display and see if anything is displayed including lines Nothing will appear on the remote controller display if the correct voltage 8 5 12 V DC is not supplied to the remote control ler If this is the case check the remote controller wiring and indoor units OCH576 109 8 3 REMOTE CONTROLLER TROUBLE CENTRALLY CONTROLLED i Ex ON OFF CD CMeBOoxe O B O Fal S PR BBE 2 CHECK TEST C5oo JO TIMER SET M NET Remote controller 1 For M NET remote controller systems Symptom or inspection code Cause Indicator appears when current is carried Inspection method and solution Though the content of operation is displayed on the remote controller some indoor units do not operate The power supply of the indoor unit is not on The address of the indoor units in same group or the remote controller is not set correctly The group setting between outdoor units is not registered to the remote controller The fuse on the indoor un
172. nual for the CONNECTION KIT when selecting the pipe size and piping length 3 Refrigerant Piping Diameter In Section From Branch to Branch Liquid Line mm Gas Line mm 9 52 15 88 lt Additional Charge gt m Additional refrigerant charge Calculation of refrigerant charge Refrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory Therefore charge each refrigerant piping system with additional refrigerant at the installation site In addition in order to carry out service enter the size and length of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the Refrigerant amount plate on the outdoor unit Calculation of additional refrigerant charge Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connected indoor units Calculate the additional refrigerant charge using the procedure shown to the right and charge with the additional refrigerant For amounts less than 0 1 kg round up the calculated additional refrigerant charge For example if the calculated charge is 6 01 kg round up Amount for the indoor units 1 5 kg 2 5 kg 3 0 kg Total capacity of connected indoor units up to 8 0 kW 8 1 to 16 0 kW 16 1 kW or above Included refrigerant amount when shipped from the factory Included refrigerant amount 4 8 kg Example
173. ode OFF ON Silent mode operation Demand control ON OFF OFF 10096 Normal ON OFF 7596 ON ON 5096 OFF ON 0 Stop OCH576 114 8 7 HOW TO CHECK THE PARTS PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS Parts name PUMY P112YKM1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS Check points Thermistor TH2 lt HIC pipe gt Thermistor TH3 lt Outdoor liquid pipe gt Thermistor TH4 lt Compressor gt Thermistor TH6 lt Suction pipe gt Thermistor TH7 lt Ambient gt Thermistor TH8 lt Heat sink gt Disconnect the connector then measure the resistance with a tester At the ambient temperature 10 to 30 C Normal Abnormal TH4 160 to 410 kQ TH2 TH3 TH6 TH7 4 3 to 9 6 kQ Open or short TH8 39 to 105 kQ TH8 is internal thermistor of power module Y Fan motor MF1 MF2 Refer to next page Solenoid valve coil 4 way valve 2184 Measure the resistance between the terminals with a tester At the ambient temperature 20 C Normal Abnormal 1725 172 5 Q Open or short Motor for compressor MC U Measure the resistance between the terminals with a tester Winding temperature 20 C Normal Abnormal PUMY P VKM PUMY P YKM 0 305 Q 0 466 Q Open or short Solenoid valve coil Bypass valve Measure the
174. ode and the location of the unit in which the fault has occurred OCH576 25 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION MS SSeJppv MS SSeJppy J lonuoo J llonuoo LOL jow LLL louu 1 LAN W LAN W ue SINR ai Ge 3 Gi N TRS Gab hd MS rd MS SSeJppy MS Sseippy MS SSeJppy E SS lt sio ol o ol elo ol zo G HO OL yun 100pu A jun 100pu Ka yun 100pu ai yun 100pu jun 100pu AS nin A7 1 nin ALO Dn Aio NIN A7 HAW ALO HUN 4oopur nin Dr Xoq uouejg 104 190 i juewebeuew yun 100pino pezyeiueo 104 Jejonuoo Je ojuoo Jejonuoo Je ojuoo Je jjoquoo Jejogjuoo ejouiel VW ejouiel VW Ou ou ejouie1 VW ou Ou aowa VW ejouieJ VW louu91 VW 9 i i ES x I X I i i uonoeuuoo Buidid eui y m Buiyoyew euop i i i i i jiedoud si yun 100pui pue xoq uoueJq i i i i i i eui ueemjeq Duu ay Fey euns ILN 800 200 900 s00 p00 goo E 100 05 10 88188 SIU JI 010 600 n 408 10 SE 49S S J J yun soopu V 3 a 2 8 v 4001 uuioo q A eoneuuo n
175. oed jo uonuejdx3 ejdurexe o seq e swous mojaq weep au SNOLLOSHIC NIHIM ONIdid v S1108 NOLLVGNNOS Nd 39lAg3S yun y punoiy 39vdS 3343 23 OCH576 6 WIRING DIAGRAM PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS SYMBOL NAME TB1 Terminal Block Power Supply eas eshs TH7 THE THS TH4 TH2 San EKA LENG TB1B Terminal Block Branch Box gt LL p p p 2 p ler M G m TB3 Terminal Block lt Indoor Outd
176. ol line TB7 on the outdoor unit The share on transmission line becomes high due to a mixed transmission caused by a malfunction of repeater on the outdoor unit which is a function to connect disconnect transmission from to control System and centralized control system eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check whether the transmission line to the indoor unit Fresh Master Lossnay or remote controller is miswired to the terminal block TB7 on outdoor unit or not Correct the wiring then turn the power acs back ON miswired I Is the transmission line miswired e Not miswired Check whether the transmission line with the other refrigerant System of the indoor unit Fresh Master or Lossnay is miswired to the terminal block TB3 on outdoor unit or not Is the transmission line miswired EE ENS wiring then turn the power miswired ea Not miswired Turn the power back ON Replace the indoor outdoor controller Does it operate normally gt board Yes There is no abnormality on the AC unit It might be caused by an external noise so check the transmission line to remove the factor s Y OCH576 93 Check code 6606 Signal communication error with transmission processor
177. om temperature display location mae Dit INDOOR UNIT ADDRESS NO mee apne INDOOR UNIT ADDRESS NO 88 will appear in the room temperature display location o b In making paired settings Turn off the remote controller The procedure is the same as described in a under 2 Address check Put into the indoor unit address display mode The procedure is the same as described in a under 2 Address check Put into the linked unit address display mode The procedure is the same as described in a under 2 Address check Display the address of the Lossnay unit or the indoor unit to be cleared e Deleting the address of a linked indoor unit Pressing the 8 8 5 button on the remote controller twice will clear the address entry of the displayed indoor unit resulting in the display shown in Figure 8 Returning to the normal mode after clearing an address The procedure is same as b in 2 Address check Figure 8 Display after address has been cleared normally mae Lus o INDOOR UNIT ADDRESS NO will appear in the unit type display location when an address has been cleared normally OA UNT ADDRESS NO O alternating display 88 will appear in the unit type display location when an abnormality has occurred during clearing INI une INDOOR UNIT ADDRESS NO Lo UNIT ADDRESS NO O OCH576 45 8 1 3 Countermeasures for Error During Test R
178. on 1 regarding address entry a In making group settings Turn off the remote controller Press the remote controller s ON OFF button to stop operation the indicator light will go off e Locate the indoor unit address display mode Press the FILTER and Ss buttons on the remote controller simultaneously and hold for 2 seconds Display indoor unit address The entered indoor units address and type will be displayed each time the button is pressed When 1 entry is made only 1 address will be displayed no matter how many times the button is pressed e Returning to the normal mode after completing check Simultaneously press the FILTER and x buttons on the remote controller and hold for 2 seconds to return to the normal mode b In making paired settings Turn off the remote controller Press the remote controllers ON OFF button to stop operation the indicator light will go off e Put in indoor unit address display mode Press the FILTER and xz buttons on the remote controller simultaneously and hold for 2 seconds e Changing to the linked operation unit address display state Press the 1 lt 6 button on the remote control Displaying the address of the indoor unit to be checked Change the address to that of the indoor unit to be checked by pressing the temperature adjustment buttons C4 OC v Displaying the address of the linked Lossnay unit Press the button to display the addresses of the linked Lossnay and indoor uni
179. on pipe gt TH6 from the sen sor holder Note When replacing thermistor lt Suction pipe gt TH6 replace it together with thermistor lt Ambient gt TH7 since they are combined together SS Refer to procedure No 5 below to remove thermistor Thermistor lt Ambient gt TH7 lt Suction pipe gt TH6 Thermistor HIC pipe TH2 Ball valve and stop valve fixing Screws ermistor Compressor TH4 Compressor MC 5 Removing the thermistor lt Ambient gt TH7 Photo 8 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 red on the outdoor multi controller circuit board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box See Photo 6 5 Pull out the thermistor lt Ambient gt TH7 from the sensor holder Lead wire of thermistor lt Ambient gt TH7 Note When replacing thermistor lt Ambient gt TH7 replace it together with thermistor lt Suction pipe gt TH6 since they are combined together Refer to procedure No 4 above to remove thermistor lt Suction pipe gt TH6 Sensor holder OCH576 150 OPERATING PROCEDURE PHOTOS 6 Removing the thermistor Outdoor liquid pipe TH3 and thermistor Compressor TH4 thermistor HIC pipe TH2 1 Remove the service panel See Photo 1 2 Disconnect the connectors TH3 white and TH4 white TH2 black on the outdoor m
180. ontinue to the next page PAM error OCH576 75 Undervoltage Overvoltage PAM error L1 open phase 4220 Power synchronization signal error Chart 2 of 2 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards The black square m indicates a switch position Diagnosis Continued from the previous page Is CN5 connected properl T without any GET e 2 gt Correct the CN5 wiring p gt Yes gt Malfunction of noise filter ACCT Replace the outdoor power circuit board Defective outdoor power circuit board Y The bus voltage can be displayed by an operation of SW1 on the outdoor multi controller circuit board Check the bus voltage read by the microprocessor with an operation of SW1 on the outdoor multi SW1 Setting Display on LED1 2 Unit controller circuit board ON OFFI 0 999 9 V 12345678 Is the power supply normal f No gt Decrease of power supply voltage p PP L1 open phase Check the bus voltage at the test points listed below on the outdoor power circuit board using a tester V model CNDC 1 2pin Y model N2 P2 Is the bus voltage normal gt Replace the outdoor power circuit board The difference of the voltage between the Sc Tr ouble of an input current dete
181. ontroller system address setting is not necessary NOTE In the case of same group operation need to set the address that is only main M NET control indoor unit Example of wiring control cables Wiring Method and Address Setting 1 Standard operation a Use feed wiring to connect terminals M1 and M2 P on transmission cable block TB3 for the outdoor unit OC to terminals M1 and M2 on the trans mission cable block TB5 of each M NET control indoor unit M IC Use non polarized 2 core wire 00 00 Connect terminals 1 and 2 on transmission cable terminal block TB15 for each M NET control indoor unit with the terminal block for the MA remote controller MA RC TB3 TB7 TB5 TB15 TB5 TB15 Mi uds 1 MA remote controller for each indoor unit 2 Operation using two remote controllers OC The same as above a b The same as above b In the case of using 2 remote controllers connect 00 terminals 1 and 2 on transmission cable terminal sia TB jas GEHE block TB15 for each indoor unit with the terminal block for 2 MA remote controllers Set either one of the MA remote controllers to sub remote controller Refer to the installation manual of MA remote con troller Using 2 MA rem
182. oor Branch MULTI B geele t W is the switch position Box Outdoor Transmission Line Beg Sess CN3D CN3S CN3N SWU2SWU1 SW9 SW5 SW6 T87 Terminal Block an WEE TRES e ze THe Te Te ED GED D LLL aiiis 2j EO vd UE IR Centralized Control Transmission Line WHT RED WHT WHT BLK 13131 3 Vive CNE SWi SW8 SW2 WC d T20AL250V H um CN52C WHT RED V LE RN lotor For Compressor M i5 3333 CNF2 1 3 1 3 RED SW4 SW3 SW7 MEI MES Fan Motor MS CH E 63H grs x1 BEDENE a 2184 Solenoid Valve lt Four Way Valve gt z BLU VEM CN2 q 1 cN51 S 63H High Pressure Switch m 1 RED 7 3 WHT LED LED 63HS High Pressure Sensor 2 __ TRANS CN4 BH BH 63LS Low Pressure Sensor mE 7 QUT svi Solenoid Valve lt Bypass valve gt PNK FA TH2 Thermistor lt Hic Pipe gt e ts ta TES 2 SR i iauid Pi 8 ZS S 5 eg AS Z s lu arog ow owe Zu l press x e RED YLW WHT WHT TH6 Thermistor lt Suction Pipe gt 1 BAK I SEN ra T NH a SS 1 2 CNAC 21 2 14 14 d TH7 Thermistor lt Ambient gt WHT RED TH8 Thermistor lt Heat Sink gt LEV A LEV B Electronic Expansion Valve MANET PB DCL Reactor d CB Main Smoothing Capacitor P B Power Circuit Board UNI Connection Terminal lt U V W Phase gt LI Connection Terminal lt L Phase gt i NI Connection Terminal lt N Phase gt N2 Connection Terminal lt DC Voltage 2 P2 Connection Terminal lt DC Voltage 7 DCL1 DCL2 Connection Terminal lt Reactor gt 2 3 P B
183. oor units kW 6 0 I lt o o 5 0 ca TET Oc remm 4 0 Current A A a lt 3 0 o Lt lt 20 ae a 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW OCH576 15 E E 4 3 4 PUMY P125VKM1 BS PUMY P125YKM1 BS lt heating gt 18 0 16 0 14 0 12 0 10 0 Capacity kW 8 0 6 0 4 0 2 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 4 0 3 5 3 0 2 5 2 0 Input kW 0 5 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 Total capacity of indoor units kW 20 0 V Type ep en mE 15 0 SS ee ppm 230V 240V HE l L L tee 10 0 en Current A 5 0 LT
184. operly as a disconnection looseness or Yes m breakage Replace it in case of a breakage Y TH8 temp resistance characteristic 0 C 180 kQ 25 50 kO 50C 17 kO Check the resistance of TH8 T C 8kO 90C 4kQ Y Replace the thermistor i Is the resistance normal Defective thermistor Replace the outdoor power circuit board Defective outdoor power circuit board OCH576 TT Check code 4250 Power module trouble Abnormal if overcurrent of DC bus or compressor is detected 30 seconds after the compressor starts operating To determine the source of abnormality either the compressor or the power module drive the power module forcedly D Closed outdoor stop valve Decrease of power supply voltage 8 Disconnection looseness or conversed connection of compressor wiring Q Defective compressor amp Defective outdoor power circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the outdoor stop valve Is the stop valve liquid gas fully Remedy Y open s Check whether the power supply voltage is normal or not Open the stop valve liquid gas fully Is the power supply voltage normal Turn the power OFF to check for looseness disconnection
185. or Units amp Outdoor Unit First Branch Indoor unit A B C a b c d 300 m A B C d 150m B C d 30m 50 meters or less If the outdoor unit is lower 40 meters or less 15 meters or less Use an optional branch piping kit CMY Y62 G E 1 Refrigerant Piping Diameter In Section 2 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch From Branch to Indoor Unit Outdoor Unit Piping Diameter Indoor Unit Piping Diameter Model Piping Diameter mm Model number Piping Diameter mm PUMY P112 Liquid Line 29 52 Liquid Line 6 35 PUMY P125 315 88 Gas Line 127 PUMY PII I Liquid Line 9 52 Gas Line 15 88 Total Piping Length jc Farthest Piping Length L Farthest Piping Length After First Branch Permissible High High Low Difference in Indoor Outdoor Section H Low Difference High Low Difference in Indoor Indoor Section h m Selecting the Refrigerant Branch Kit W Select Each Section of Refrigerant Piping 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d 3 Section From Branch to Branch B C Select the size from the table to the right Each Section of Piping 50 or lower Gas Line 63 to 140 Note When connecting the CONNECTION KIT PAC LV11M J and an M series indoor unit refer to the installation ma
186. or phases of the compressor wiring Ensure power supply from facility Connect the compressor wiring U V and Y Are the wirings normal Disconnect the wiring to check the power module W phase properly then turn the power back ON Replace the outdoor power circuit board Y Does it operate normally Yes or outdoor multi controller circuit board Defective power circuit board Replace the compressor OCH576 78 Defective compressor BB Rotational frequency of outdoor fan motor trouble Abnormal if no rotational frequency is detected or detected a value Malfunction of fan motor outside the specified range during fan motor operation Disconnection of CNF connector Defective outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the fuse on the outdoor multi controller circuit board Replace the outdoor multi controller circuit board Is the fuse melting ies Replace the fan motor melting Not melting Check the fan motor connector CNF1 and CNF2 for a disconnection or looseness Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wir
187. ormal display Ultra low speed operation is commenced at thermostat OFF heating Light air automatically change over to set value by time or piping temperature at thermostat ON Fan stops during heating Defrost F The fan is to stop during defrosting operation Fan does not stop while Light out Fan is to run for 1 minute after stopping to exhaust residual heat operation has been stopped only in heating No setting of fan while start STAND BY G Ultra low speed operation for 5 minutes after SW ON or until piping SW has been turned on temperature becomes 35 C There low speed operate for 2 minutes and then set notch is commenced Hot adjust control Indoor unit remote controller HO blinks System is being driven shows HO or PLEASE PLEASE WAIT blinks Operate remote controller again after HO or PLEASE WAIT WAIT indicator for about disappears 2 minutes when turning ON power supply Drain pump does not stop After a stop of cooling operation unit continues to operate drain while unit has been stopped pump for 3 minutes and then stops it Drain pump continues to Unit continues to operate drain pump if drainage is generated even operate while unit has been during a stop stopped OCH576 111 8 5 INTERNAL SWITCH FUNCTION TABLE PUMY P112 125 140YKM1 BS PUMY P112 125 140VKM1 BS HOLO3NNOO LAdLNO LNANI LINN HOOGLNO 9 8 0 1949H z uni jeet uuopied oi 1
188. ost recent address within the same M NET control indoor unit M IC group to terminal block TB6 on the M NET remote controller c Set the address setting switch on outdoor unit P C B as shown below Seting Method Use the smallest address within M IC Main 001 to 050 the same group of M NET control indoor units Use an address other than that of the M IC Main from among the units M IC Sub 001 to 050 within the same group of indoor units This must be in sequence with the M IC Main Use the smallest address of all the Outdoor unit 051 to 100 M NET control indoor units plus 50 Main M NET Set at an M IC Main address riu 101 to 150 within the same group plus 100 d Use the M NET control indoor unit M IC within the group with the most functions as the M IC Main unit Combinations of 1 through 3 above are possible OCH576 pT Name Symbol and the Maximum Remote controller Units for Connection Name Symbol Maximum u nits for connection Outdoor unit OC M NET control Indoor unit M IC 1 OC unit can be connected to 1 to 9 P112 1 to 10 P125 1 to 12 P140 M IC units M NET remote controller M NET RC Permissible Lengths Prohibited items Maximum 2 M NET RC for 1 indoor unit Maximum 12 M NET RC for 1 OC Longest transmission cable length 1 25 mm L1 L2 L2 L3 L3 L1 S 200 m M NET Remote controller cable length 1 If 0 5 to 1 25 mm 1 2251
189. ote control lers for each M NET control MARC MA RC indoor unit Main Sub 3 Group operation The same as above a OC b The same as above b Connect terminals 1 and 2 on transmission cable terminal block TB15 of each M NET control indoor 00 00 unit which is doing group operation with the terminal block the MA remote controller Use non polarized 2 core wire In the case of same group operation need to set the address that is only main M NET control indoor unit Please set the smallest address within number 01 50 of the M NET control indoor unit with the most functions in the same group 00 TB3 TB7 TB5 TB15 TBS TB15 Multiple indoor units operated together by 1 MA remote con troller Combinations of 1 through 3 above are possible OCH576 34 Permissible Lengths Prohibited items Longest transmission cable length Li L2 200 m 1 25 mm MA remote controller cable length 1 2 S 200 m 0 3 to 1 25 mm TB3 TB7 Md g 00 TB5 TB15 M2 KA M NET RC The MA remote controller and the M NET remote controller cannot be used together with the M NET con trol indoor unit of the same group M IC 00 TB5 TB15 Wel f2 MA DC Longest transmission cable len
190. ows whether conventional tools can be used or not Tools and materials Gauge manifold Charge hose Air purge refrigerant charge and operation check R410A tools Tool exclusive for R410A Can R22 tools be used Can R407C tools be used Tool exclusive for R410A Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant cylinder Refrigerant recover Refrigerant charge Tool exclusive for R410A Tool exclusive for R410A Applied oil Apply to flared section Ester oil ether oil and alkylbenzene oil minimum amount Ester oil ether oil O Alkylbenzene oil minimum amount Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R410A x Charge valve Prevent gas from blowing out when detaching charge hose Tool exclusive for R410A x x Vacuum pump Vacuum drying and air purge Tools for other refrigerants can be used if equipped with adop ter for reverse flow check A Usable if equipped with adopter for rever se flow A Usable if equipped with adopter for rever se flow Flare tool Flaring work of piping Tools for other refrigerants can be used by adjusting flaring dimension A Usable by adjusting flaring dimension A Usable by adjusting flaring dimension Bender Pipe cutter Bend the pipes Cut the pipes Tools for ot
191. p OCH576 139 F 10 2 REFRIGERANT PIPING SYSTEM WHEN USING BRANCH BOX Branch box Method Connection Examples Connecting to 8 Indoor Units jn g e 9 Outdoor unit GBranching joint Branch box Olndoor unit Total piping length A B C a bic d erf gthS 150m Permissible Farthest piping length L A C h 80m A C S 55m h 25m length Piping length between outdoor unit and branch boxes A B C 355m One way Farthest piping length after branch box 1 IE 25m Total piping length between branch boxes and indoor units a b c d e f g h lt 95m In indoor outdoor section H 1 Permissible H lt 50 m In case of that outdoor unit is set higher than indoor unit H lt 40 m In case of that outdoor unit is set lower than indoor unit height difference In branch box indoor unit section h1 hi h2 15m One way In each branch unit h2 h2 S 15m In each indoor unit h3 h3 S 12m Number of bends S1 5 Branch box should be placed within the level between the outdoor unit and indoor units m Select Each Section of Refrigerant Piping 1 Section From Outdoor Unit to Branch box A B C 2 Sections From Branch box to Indoor Unit a to h Each Section of Pip
192. pacity table Refer to 4 3 Total power consumption of system See the technical manual of each indoor unit CDA lt kW gt The power consumption of the outdoor unit will vary depending on the total capacity of the selected indoor units 2 Method of obtaining total current Page numbers in this technical manual Subtotal Total current through each indoor unit See the technical manual of each indoor unit Current through outdoor unit Standard capacity table Refer to 4 3 Total current through system See the technical manual of each indoor unit 0 0 lt A gt The current through the outdoor unit will vary depending on the total capacity of the selected indoor units 3 Method of obtaining system power factor Use the following formula and the total power and current obtained in parts and on the above tables to calculate the system power factor System power factor Total system power consumption Total system current x voltage x 100 9 7 2 Applying to an electric power company for power and total current Calculations should be performed separately for heating and cooling employing the same methods use the largest resulting value in your application to the electric power company OCH576 136 10 REFRIGERANT PIPING TASKS 10 1 REFRIGERANT PIPING SYSTEM Line Branch Method Connection Examples Connecting to 4 Indo
193. pejoeuuoo si SALAS AJMd E uSuM e Dumes YMS yor ur uonejedo HOLOSNNOO UI OUNI LNN YOOCLLNO 938 z1 PE nae epau nuo epoui Q a Dee januoo pueuecyepau Lee eut Nog 440 uam Ps aq ue P S Puausq puewaq u lis eui Bulyoyms e U9IIMS S uonoun4 NO SI und UE feu IR a NO NO aw sa gegeud sseuppeuunuuuLu SLA ui DI J8 041u09 I 6MS J043u05 pezi eJueo y UBYM S 8q JOUULD ssa ppeun uri aui uj IUN Jocpui Stn segeu3 sBumes eniu ap Buu arpg d 9 0UJ8J wo 1340 eBueuo ony om amp unsayep 3se suy aye Supu pau Aula peddays si uone edo 3sayep A aan u ou mh OL 40 dn3uejs3e Auo ema Apeaior uone ido JWH U uuna BH j 1soJep peo2J04 9 i DBuinsoijpep euju uo pied an Aresseo9u si 3 UAM NO un L Jossariuoo Bund S fouerbe eui Buusvo Lech uonejedo 1002 Jaye snoy uelounsul I J d Bui Jo AAO ILLLION 2 juepoynsu eq yu eoueuuoped eu AQ HUN KOL SUA uo uonesuepuco Mep eonpai oL iT ps ej ue HS ye umop KouenbeJl UnuJiXelA v youms T zd E uonounj HERE p ZMS paddas Vic HO emsetzen ieee ued jeuondo sayeay 1e1s JN 3H SUA ILTA NO Jesu esed eui upes Aq Sun NO Buunp ao 440 E I Hed n yeoy 181 z Sl uOnP do An aM SSe uond unsuoo wwe uam 39s eq ueo Sugey n Bugey 9299 OU eziD1euo 0 bumes n apsu svo F use SS aui uo MOUS seonp i1l Se me Syed jeoup
194. peur OU SI T ZMS JI 0ZAV 0 0S3v STOW VOSA tz Le Sq prov su p eduexe uy LURISAS a OESCH SPRO PL e ji No peurneq SU TZMS AV IdSIO NOLLVINHOJNI PEE ANS 8 9S vt 2l uM LINN HOOGLNO 01 8 01 12184 Dueoq MEINEN 27 30u10 uoneiedo wawa 440 8 1 br n9119 Je O41u0O9 nnuJ J00pino uo 131 y NO 6Buunp AP PS eq ue NO T o uoneuuojJul SUP Joopijno e dsip o sDunies eniu UDO LMS eee D p yun n suey amp u6ip sua EES Ee NO Joo eui IAMS mue s ZNMS MPO Re Buluan eJojeg Gi LY g 6p yun sbumes eniu NOS zag LAMS Jes 0 uo uoneuuoju j euonippy sod nd SXJeuloH S IN EER NO uoyoun4 dag yms Dunes uoiMS uoe3 ui uonejedo Continue to the next page 112 OCH576 The black square m indicates a switch position jun 1oopul ay ui IIIe pinbi jo uomrejnuinooe ue o peziDjeue si sayeay uollu A 1d z 1J eui MOJ q JO 4 6 9 p SI eunjejeduie juerquue y pue pow uoo u J40 ouueu epnjoul 440 S epoui Buneeu Buunqz peziDjeue si Jayeay uonueAeJd 8299 eui Moie JO 456 9 p SI eunje1eduie juerquie eui pue uomejedo Bureeu Buung s pouu Dugeeu 440 ouueui pue 1002 NV3 U HUN JOOpU JO esu ejnje1edujej Wood jsureBe ejnseeuuejuno g GMSs enp snes eDeuous uejefuje1 YM uonejedo J40 ouueui 10 OLS 1009 NY Ul dun 400pui ay 1sureBe enseeuuejunoo e se eA e uorouedxe 91U01499 3 100pu eui SU9dO SMS v YOUMS eui jo ssejpyeDoei ejgesip sAeme si uonouny SIU
195. ption ratio 0 6 0 8 04 1B 0 6 0 2 INDOOR 0 4 INDOOR 15 10 0 10 20 30 4046 wep c 15 10 5 0 5 10 5 DB Cs Outdoor D B C gt Outdoor W B C gt OCH576 19 O 4 4 2 Correcting Capacity for Changes in the Length of Refrigerant Piping 1 During cooling obtain the ratio and the equivalent piping length of the outdoor units rated capacity and the total in use indoor capacity and find the capacity ratio corresponding to the standard piping length from Figure 3 Then multiply by the cooling capacity from Figure 1 to obtain the actual capacity 2 During heating find the equivalent piping length and find the capacity ratio corresponding to standard piping length from Figure 3 Then multiply by the heating capacity from Figure 2 to obtain the actual capacity 1 Capacity Correction Curve Figure 3 Cooling 1 00 M DR Heating 0 95 Ett 0 90 LLLI Ip ged Heating P112 125 140 models SS 0 85 9 0 80 T gt 0 75 gd 0 70 Cooling P112 model 5 0 65 Cooling P125 model Cooling P140 model 0 60 0 55 0 50 0 20 40 60 80 100 120 140 160 180 200 m Corrected pipe length 2 Method for Obtaining the Equivalent Piping Length Equivalent length for type P112 125 140 length of piping to farthest indoor unit 0 3 x number of bends in the piping m Length
196. r Compressor TH4 from the sensor holder See Photo 7 and 9 Thermistor lt Outdoor liquid pipe gt TH3 Removing the 4 way valve coil 21S4 Photo 10 1 Remove the service panel See Photo 1 Removing the 4 way valve coil 2 Remove 4 way valve coil fixing screw M5 x 7 a Way save eM eI way vave 3 Remove the 4 way valve coil by sliding the coil toward you 4 Disconnect the connector 21S4 green on the outdoor multi controller circuit board in the electrical parts box Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See photo 5 4 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed See Photo 4 and 7 5 Remove 4 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 6 Remove the 4 way valve coil See Photo 10 7 Recover refrigerant 8 Remove the welded part of 4 way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 4 way valve coil fixing screw OCH576 146 OPERATING PROCEDURE PH
197. r line 12 m Decline of transmission voltage signal due to unmatched transmission line types Types for shield line CVVS CPEVS Line diameter 1 25 mm or more Decline of transmission voltage signal due to excessive number of connected units Malfunction due to accidental disturbance such as noise or lightning surge amp Defect of error source controller The cause of displayed address and attribute is on the outdoor unit side An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the outdoor unit D Contact failure of indoor outdoor unit transmission line Disconnection of transmission connector CN2M on indoor unit Malfunction of sending receiving circuit on indoor outdoor unit The cause of displayed address and attribute is on the indoor unit side An abnormality detected by the remote controller if receiving no ACK when sending data from the remote controller to the indoor unit CD While operating with multi refrigerant system indoor units an abnormality is detected when the indoor unit transmit signal to the remote controller during the other refrigerant system outdoor unit is turned OFF or within 2 minutes after it turned back ON Contact failure of indoor unit or remote controller transmission line Disconnection of transmission connector CN2M on indoor unit C Malfunction of sending receiving circuit on indoor unit or remo
198. ransmission line Replace the remote controller Replace the indoor controller board with Does HO or Please wait disappear within the LED2 is blinking 102 6832 MA communication send error 6833 Chart 2 of 2 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Refer to the chapter Electrical Work T Connect the wiring properly as specified in Is the wiring connected r A the chapter Electrical Work in the indoor properly meeting the condition unit Installation Manual uc No abnormality It might be caused by an external noise so check the transmission line to remove the factor s OCH576 103 7100 Total capacity error When the total of the number on connected indoor unit model names exceeds the specified capacity level 13096 of the number on the outdoor unit model name a check code 7100 is displayed D The total of number on connected indoor unit model names exceeds the specified capacity level P112 model up to code 35 P125 model up to code 41 P140 model up to code 47 The model name code of the outdoor unit is registered wrongly eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards
199. resistance between the terminals with a tester At the ambient temperature 20 C SV1 Normal Abnormal 1182 5 83 Q Open or short Linear expansi LEV A on Valve Normal Abnormal Q 6 REES Orange Gray Black Gray Red Gray Yellow Gray Orange Red L Yellow Black 46 30 Open or short Linear expansi LEV B L on Valve Red Blue Orange Yellow Pu White OCH576 Normal Abnormal Red White Red Orange Red Yellow Red Blue 46 t4Q Open or short 115 O Check method of DC fan motor fan motor outdoor multi controller circuit board Notes High voltage is applied to the connecter CNF1 2 for the fan motor Pay attention to the service Do not pull out the connector CNF1 2 for the motor with the power supply on It causes trouble of the outdoor multi controller circuit board and fan motor Q Self check Symptom The outdoor fan cannot rotate Fuse check Check the fuse F500 on outdoor multi controller circuit board Did the fuse blow V No Wiring contact check Contact of fan motor connector CNF1 2 Yes gt Replace the outdoor multi controller circuit board MULTI B C B and fan motor MF1 2
200. ront panel fixing screws 5 5x12 and 2 4 x 10 and remove the front panel See Photo 4 T eu wa Wf Valve 5 Remove 4 back cover panel fixing screws 5 x 12 and bed fixing remove the back cover panel EN screws 6 Remove the electrical parts box See Photo 5 Separator i 7 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed See Photo 4 and 7 8 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 9 Remove 3 separator fixing screws 4 x 10 and remove the separator See Figure 1 10 Recover refrigerant 11 Remove the 3 compressor fixing nuts for motor using span ner or adjustable wrench 12 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Figure 1 Separator IE fixing Note Recover refrigerant without spreading it in the air Sh screws Separator _ Speak fixing screw 15 Removing the accumulator 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 4 4 Remove 4 back cover panel fixing screws 5 x 12 and remove the back cover panel b Remove the electrical parts box See Photo 5 6 Remove 3 valve bed fixing screws 4
201. rt Yes Is the outdoor unit short cycled Solve the short cycle short cycled no short cycle ete the outdoor heat gt Wash the outdoor heat exchanger dirty gt no dirt Are the pipes clogged or e gt Yes gt Defective pipes 8 Disconnect the TH7 wiring and check the resistance Continue to the next page OCH576 54 Check code 1302 High pressure trouble eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Chart 3 of 4 Continued from the previous page Is there a resistance detected Disconnect the indoor LEV wiring to check the resistance Is there a resistance detected gt Replace the TH7 Check the voltage and appearance of the indoor controller board Is the voltage normal Replace the indoor LEV Is it free from any trace of over heating or burning Check the resistance of SV1 Continue to the next page Replace the indoor controller board OCH576 55 Check code 1302 eDiagnosis of d efectives High pressure trouble Chart 4 of 4 Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy
202. rt cycle Is there dirt on the outdoor heat exchanger short cycled Are pipes clogged or broken l dirty Remedy Wash the indoor heat exchanger Yes Solve the short cycle Wash the outdoor heat exchanger Disconnect the outdoor temperature thermistor wiring and check the resistance Is there a resistance detected gt Yes Defective pipes Disconnect the indoor LEV wiring to check the resistance Is there a resistance detected SCH Replace the TH7 Check the voltage and appearance of the outdoor multi controller circuit board Is the voltage normal Is it free from any trace of over heating or burning T Continue to the next page OCH576 Replace the indoor LEV 51 Replace the indoor controller board 1300 Low pressure trouble Chart 3 of 3 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Check the resistance of SV1 Is there a resistance detected gt Replace the SV1 Yes lt 63L equipped model gt Is the connector for outdoor multi controller circuit board 63L Yes gt Reconnect the connector or connect i
203. s U V V W and W U different Remove factor s causing the short cycle Make sure to perform a voltage check with the same performing Replace the outdoor multi controller circuit board Does it operate normally Yes frequencies gt Replace the compressor gt Replace the outdoor power circuit board Complete OCH576 74 4220 Undervoltage Overvoltage PAM error L1 open phase Power synchronization signal error Chart 1 of 2 Abnormal if any of following symptoms are detected P112 125 140V model eDecrease of DC bus voltage to 200 V eincrease of DC bus voltage to 400 V eDC bus voltage stays at 310V or lower for censecutive 10 seconds P112 125 140Y model eDecrease of DC bus voltage to 350 V eincrease of DC bus voltage to 760 V eDecrease of primary current to 0 1 A Note The detection is active only when the operational frequency is 40 Hz or more or the compressor current is 6 A or more eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is there any abnormality on wirings No 78 Which sub code is displayed Decrease increase of power supply voltage or T open phase Disconnection of compressor wiring Malfunction of 52C Disconnection or contact failure of CN5
204. s amod oou am iddns 19mod epu Bud gt Ed SS 09 epu Bud dens one 18700 Buidid eeu eng Buidid 1014 6 d 22 OUTLINES AND DIMENSIONS PUMY P112VKM1 BS PUMY P125VKM1 BS PUMY P140VKM1 BS ayeu AY uogeoo UOOSUUOD FATWA dOLS Jo uogeoipu L s 48 8 26 6 aal uoo uuoo edid OT werebujeg Z EE PECES E E 38 9 eg SL Sarl open edd svo wueiefujou T joued aguas S 0N JO ajdwex3 Ayddns samod xod ipueiq our 19 purior Va Suerg LE 10 PUNIS LL yw lul Iw APIS C SERIE Er Adan ed m ET TETTE 1uDu 01 yo Wai 0S01 uonoeuuoo peultuio T abseyosiq sly an 74 m Ll 006 um ES SE t ca gt eoeds ANAS 0 I E A E SUuW ER e ale NOIINGN004 se GU i E p d EE SEI Ay epis z y amp T lt uBl u yoq uoepuno4 gt B Sez 009 Sez DE Deep pd 0L log uogepunod Nojeg pue Ee WYBIY LNOuJ aq snw sJeusew pue syjog weiBelp mojaq ayy U uMous 219 spenueui uollelie sui 3y ul auf Sapi paou pases re y lu IV Ia SUOI O9JID y WO opeui aq ueo SHOQ g eM 0 LIN uogepunoj p uM
205. stor HIC pipe G Defective outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards y P g The black square m indicates a switch position Diagnosis Check the wiring and connector connection of TH2 Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wiring connector properly Replace it in case of a breakage Disconnect the connector to check the resistance of TH2 using a tester Is the detected resistance normal Replace the thermistor The detected temperature of TH2 can be displayed by an operation of SW1 on the outdoor multi controller circuit board SW1 Setting Display on LED1 2 Unit Check a temperature of TH2 ON OFF 12345678 99 9 999 9 C Replace the outdoor multi controller circuit Is the detected temperature normal board Malfunction of thermistor circuit Yes No abnormality gt A connector contact failure is suspected OCH576 85 5110 Heat sink temperature thermistor TH8 open short Abnormal if TH8 detects to be open short D Disconnection or contact failure of connectors CPI 12 125 140V model Internal thermistor gt Characteristic defect of thermistor Open 35 1 C or less
206. su s Wan kejap Aupeuuouge junoure uezaba juerotnsu kejap yjeuuouqe eBeyoA Aejap uond ou lu Ju uno 19A0 JosseJduio kejap Buryeaysano yuls Eat z Dos Aejap Aupeuuouqy 00001001 kejap Rypeuuiouqe gH1 Aejap Aypeuuouqe ZHL kejap Kyreuuouqe fouenbay U0lJ8J0 uej J00pino Aejap Ayyeuouge CHL Aejap Aypeuuouqe vH L Aejap Ayjeuuouqe einje1edujej aus JosseJduio5 Aejap eunjejeduje oDieuosip MOJ 0 enp e y dng Aejap Ayyeuuouge einsseJd uBiH Age Kejap pu 00001000 Aejap Ayjeuuouqe ui Bulureuu u senieuuouqe UE Aejdsiq Aejap uous uedo Josues Wan Aejap Aypeuuouge 9HL kejap yjeuuouge ainpow amod epou Buljood ui SEA p yoojq Aq pasneo Joar kejap yjeuuouqe eA eA Kem p Aejap Aypeuuouqe ZHL kejap Ayjeuuouge S169 g fejdsip Kejop Ayjeuuouqy 00000LLL kejap Ayjeuuouqe U09019 up pg up Aejap Ayyewuouge SHES kejap Ayyewuouge jueuno Aewnd 4OSUaS JUBLIND kejap Ajyewuouge yunowe juelbuyeu uerotgnsu Aejap Ayyewsouge eBejoA Aejap uondeouoejut am JAA Josseidwoy Aejap Bulyeaysano yuls yeoH z Aeldsip Kejop Ayjeuuouqy 00000110 kejap ypeuuouge 8HL Aejap Aypeuuouqe ZHL kejap yjeuuouqe fouanbauj NED D i Aejap Ayeuuouge H1 Aejap Aypeuuouqe YHL Aejap Aypeusouge aunyesaduu9 eus Jossaidwo5 Aejap aunyesadwia abeyosip mo 0 anp jeeuedng kejap Ajeuuouqe eunsseJd uDiH fejdsip Aejap Ajjeuuouqy 0000
207. t 11 Remove the 3 compressor fixing nuts for motor using span ner or adjustable wrench 12 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Figure 1 Separator IE fixing Note Recover refrigerant without spreading it in the air Sh screws Separator WES fixing screw 14 Removing the accumulator 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 4 4 Remove 4 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 5 6 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x16 and then remove the valve bed See Photo 4 and 7 7 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 accumulator leg fixing screws 4 x 10 See Photo 15 Note Recover refrigerant without spreading it in the air Photo 14 Photo 15 Accumulator Accumulator leg screws OCH576 148 PUMY P112YKM1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS OPERATING PROCEDURE Note Turn OFF the power supply before disassembly
208. t H H G H 3 When fault requiring inspection has occurred State The LED alternately indicates the inspection code and the location of the unit in which he fault has occurred OCH576 24 PUMY P112YKM1 BS PUMY P125YKM1 BS PUMY P140YKM1 BS SYMBOL NAME TB1 Terminal Block Power Supply 63Ls 63HS TH7 TH6 TH3 TH4 TH2 est CEVA MEE TB1B Terminal Block Branch Box Gg Aa ler M M TB3 Terminal Block lt Indoor Outdoor Branch MULTI B eU t t W is the swi
209. t in alternation Displaying the addresses of other entered units The addresses of the other entered units will be displayed in alternating fashion after resting the button again e Returning to the normal mode after completing the check Simultaneously press the FILTER and xx buttons on the remote controller and hold for 2 seconds to return to the normal mode 3 Clearing an address Refer to section 1 regarding the address entry and section 2 regarding checking addresses a In making group settings Turn off the remote controller The procedure is the same as described in a under 2 Address check Put in the indoor unit address display mode The procedure is the same as described in a under 2 Address check Displaying the indoor unit address to be cleared The procedure is the same as described in a under 2 Address check e Clearing indoor unit address Pressing the 8 8 5 button on the remote controller twice will clear the address entry of the dis played indoor unit resulting in the display shown in Figure 6 The display shown in Figure 7 will appear if an abnormality occurs and the entry is not cleared Please repeat the clearing procedure Returning to the normal mode after clearing an address The procedure is same as a in 2 Address check Figure 6 Display after address has been Figure 7 Display when an abnormality has cleared normally occurred during clearing E a will appear in the ro
210. t tightly disconnected or loose Replace the outdoor multi controller circuit board OCH576 92 1302 High pressure trouble Chart 1 of 4 63H equipped model 63HS non equipped gt Defective operation of stop valve not fully open 1 High pressure abnormality 63H operation Clogged or broken pipe Abnormal if 63H operates during compressor operation 4 15 MPa Malfunction or locked outdoor fan motor 63HS equipped model 63H non equipped gt D Short cycle of outdoor unit 2 High pressure abnormality 63HS detected Dirt of outdoor heat exchanger Abnormal if a pressure detected by 63HS exceeds 4 15 MPa during amp Remote controller transmitting error caused by noise interference compressor operation Contact failure of the outdoor multi controller circuit board connector Defective outdoor multi controller circuit board 63H High pressure switch 63HS High Short cycle of indoor unit High pressure sensor I LEV Electronic expansion valve Decreased airflow clogged filter or dirt on indoor unit SV1 Solenoid valve Malfunction or locked indoor fan motor TH7 Thermistor Ambient Decreased airflow caused by defective inspection of outdoor temperature thermistor It detects lower temperature than actual temperature Indoor LEV performance failure amp Malfunction of fan driving circuit SV1 performance failure Defecti
211. tch position Im E Jee Line ge E I d E E E Se Se E SWU2SWU1 SW9 SW5 swe erminal Bloc e CNF1 lt Centralized Control Transmission Line gt MS 1 7 WHT ka RED wan wan AS Ges Ges Ges D 2 0 2 lt WH HU HOQ FUSE1 FUSE2 Fuse lt T20AL250V gt CNLVA CNLVB MC Motor For Compressor MF2 d CNF2 pee WHT RED Ww WK MF1 MF2 Fan Motor ie 7 WHT Ls T SW4 SW3 SW7 2184 Solenoid Valve lt Four Way Valve gt 3 BLU YLW SIB M uid 63H High Pressure Switch i REO WHT LEDT T TED 63HS High Pressure Sensor foj I s993 3 HH HH 63LS Low Pressure Sensor 2 gett TRANS T svi Solenoid Valve lt Bypass valve gt CNDC H D TH2 Thermistor Hic Pipe PNK Fi Ral TH3 Thermistor lt Outdoor Liquid Pipe gt Te T tz 2 CN102 TH4 Thermistor lt Compressor gt 2 8 9 2 F2 LED3 CNS CNS2 CN41 CN40 Pl TH6 Thermistor Suction Pipe e RED YLW WHT WHT Rees TH7 Thermistor lt Ambient gt 1 13520 1 No has SCH LE SS SO 212314 14 1 THE Thermistor lt Heat Sink ey WH RS Rush Current Protect Resistor LEV A LEV B Electronic Expansion Valve ACL4 Reactor M NET P B DCL Reactor TH8 P B Power Circuit Board n 2 7 2 TB U V W Connection Terminal lt U V W Phase gt P B f TB L1 L2 L3 Connection Terminal lt L1 L2 L3 Power Supply Ed Ed Bd H TB P1 P3 Connection Terminal RK WSA 712 X52CA B 52C Relay TOINDOORUNT WH GE Reb mo NF Noise Filter Circuit Board CONNECTING WIRES i L3OUT TB L3 2 LO1 LO2 LO3 Connection Ter
212. te controller Q The cause of the displayed address and attribute is on the remote controller side An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the remote controller OCH576 95 CD While operating with multi refrigerant system indoor units an abnormality is detected when the indoor unit transmit signal to the remote controller during the other refrigerant system outdoor unit is turned OFF or within 2 minutes after it turned back ON Contact failure of indoor unit or remote controller transmission line Disconnection of transmission connector CN2M on indoor unit C Malfunction of sending receiving circuit on indoor unit or remote controller Check code 6607 No ACK error Chart 2 of 4 While the indoor unit is operating with multi refrigerant system Fresh Master an abnormality is detected when the indoor unit transmits signal to the remote controller while the outdoor unit with the same refrigerant system as the Fresh Master is turned OFF or within 2 minutes after it turned back ON The cause of displayed address and attribute is on the Fresh Master side An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the Fresh Master Contact failure of indoor unit or Fresh Master transmission line Disconnection of transmission connector CN2M on indoor unit or Fresh Master
213. the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Check the connection of the communication line CN2 and CN4 between the outdoor multi controller circuit board and power circuit board Connect the CN2 and CN4 properly Replace them in case of a breakage Y Are they connected normally The communication circuit of either the outdoor multi controller circuit board or power circuit board is defective If unable to identify the defective circuit Replace the outdoor multi controller circuit board if it doesn t recover Replace the outdoor power circuit board OCH576 47 1102 Compressor temperature trouble Chart 1 of 2 1 Abnormal if TH4 falls into following temperature conditions Malfunction of stop valve Over heated compressor operation caused by eexceeds 125 C 257 F shortage of refrigerant Defective thermistor eexceeds 110 C 230 F continuously for 5 minutes Defective outdoor multi controller circuit board 2 Abnormal if a pressure detected by the high pressure sensor and LEV performance failure converted to saturation temperature exceeds 40 C 104 F during defrosting and TH4 exceeds 110 C 230 F 8 Defective indoor controller board Clogged refrigerant system caused by foreign TH4 Thermistor Compressor object LEV Electronic expansion valve Refrigerant short
214. thin the same group of indoor units Use an address other than the M IC Main in the same group of M NET M IC Sub 01 to 50 indoor units This must be in sequence with the M IC Main Use the smallest address of all the indoor units plus 50 Outdoor Unit 51 to 100 The address automatically becomes 100 if it is set as 01 50 Main M NET Remote Controller 101 to 150 Set at an M IC Main address within the same group plus 100 Sub M NET Remote Controller 151 to 200 Set at an M IC Main address within the same group plus 150 MA Remote Controller Address setting is not necessary Main sub setting is necessary h The group setting operations among the multiple M NET control indoor units is done by the M NET remote controller M NET RO after the electrical power has been turned on i When connecting PWFY unit For PWFY series do not set up group connection with other indoor units LOSSNAY is not available for use with PWFY series Use a WMA remote controller for operation of PWFY series For more details refer to the service manual for PWFY series Wiring Method Address Settings OCH576 36 o Name Symbol and the Maximum Units for Connection Longest length via outdoor unit M NET cable Li L2 L3 L4 and Li L2 Le L7 500 m 1 25 mm more Longest transmission cable length M NET cable L and L3 L4 and Le and L2 Le and L7 200 m 1 25 mm or more MA Remote controller
215. tly Check for other possible causes as there is no problem with the remote controller When the remote controller malfunctions Error display 1 NG flashes The remote controller s transmitting receiv ing circuit is defective Ri x The remote controller must be replaced with a new one Where the remote controller is not defective but cannot be operated Error display 2 E3 6833 or 6832 flashes Transmission is not possible Error display 3 ERC and the number of data errors are displayed Data error has occurred EE o IR LP CHELE 0C022 Tere D D r ERROR CODE N L There might be noise or interference on the transmission path or the indoor unit or other remote controllers are defective Check the transmission path and other controllers Li ERC The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmis sion path If such a problem is occurring the transmitted data is affected by noise etc Check the transmission path When the number of data errors is 02 Transmission data from remote controller nin run Transmission data on transmission path To cancel remote controller diagnosis Press the CHECK button for 5 seconds or more Remote controller diagnosis will be cancelled PLEASE WAIT and operation lamp
216. transmission line for OCH576 99 transmission wave and noise 6831 6834 MA communication receive error Chart 1 of 2 Detected in remote controller or indoor unit When the main or sub remote controller cannot receive signal from indoor unit which has the 0 address When the sub remote controller cannot receive signal G When the indoor controller board cannot receive signal from remote controller or another indoor unit When the indoor controller board cannot receve signal eDiagnosis of defectives D Contact failure of remote controller wirings Q Irregular Wiring A wiring length number of connecting remote controllers or indoor units or a wiring thickness does not meet the conditions specified in the chapter Electrical Work in the indoor unit Installation Manual Malfunction of the remote controller sending receiving circuit on indoor unit with the LED2 is blinking Malfunction of the remote controller sending receiving circuit Remote controller transmitting error caused by noise interference Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Disconnect and reconnect the connector CN3A then turn the power back ON No abnormality gt A connector or wiring contact failure is Is the check code 6831 or 6834 still No es Check the remote controller for mai
217. troller s Never touch the on off switch of the remote controller s Refer to 8 1 2 Special Function Operation and Settings for M NET Remote Controller as for settings In MA remote controller s this registration is unnecessary 4 More than 12 hours later from power supply to the outdoor unit turn all power switch to on for the test run Perform test run according to the Operation procedure table of the bottom of this page While test running make test run reports 8 1 1 1 Test run for M NET Remote controller When you deliver the unit after the test run instruct the end user for proper usage of the system using owners manual and the test run report you made to certificate normal operation If abnormalities are detected during test run refer to 8 1 3 Countermeasures for Error During Test Run As for DIP switch setting of outdoor unit refer to 8 5 INTERNAL SWITCH FUNCTION TABLE M NET Remote controller Check code indicator see NOTE 1 Test run remaining time indicator see NOTE 3 Indoor unit liquid pipe temperature indicator see NOTE 4 Display panel TEST RUN indicator ON OFF LED Lights up in operation ing GO GO ON OFF button 9 PERATION SWITCH button ESF E S Ce AIR DIRECTION button Se CY C25 TEST RUN button LOUVER button FAN SPEED button amp
218. ulti controller circuit board in the electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electri cal parts box 4 Pull out the thermistor Outdoor liquid pipe TH3 and thermistor Compressor TH4 from the sensor holder See Photo 7 and 9 Thermistor Outdoor liquid pipe TH3 7 Removing the Away valve coil 2194 1 Remove the service panel See Photo 1 Photo 10 Removing the 4 way valve coil 2 Remove 4 way valve coil fixing screw M5 x 7 3 Remove the 4 way valve coil by sliding the coil toward you i aah SORS j f 4 Disconnect the connector 21S4 green on the outdoor multi V ps way valve coil controller circuit board in the electrical parts box i 4 way valve 8 Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See Photo 5 4 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed See Photo 4 and 7 5 Remove 4 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 6 Remove the 4 way valve coil See Photo 10 7 Recover refrigerant 8 Remove the welded part of 4 way valve 4 way valve coil fixing screw Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing th
219. un H a problem occurs during test run a code number will appear on the remote controller or LED on the outdoor unit and the air conditioning system will automatically cease operating Determine the nature of the abnormality and apply corrective measures Check Trouble Detected Unit Remarks 0403 Serial communication error EN Outdoor unit outdoor multi controller circuit board Power circuit board communication trouble Check delay code 1202 PO Check delay code 4350 Check delay code 4320 Check delay code 4330 Check delay code 4350 Check delay code 4500 Check delay code 1202 Check delay code 1211 1102 oO O O LO LO O GE O la O LO LO L LO FO O oO o MEN MK O O LO po o o O O p O O O em LO LO LO LO 1300 owpessre _ I S 1302 High pressure 1500 Superheatduetolowdischargetemperature Refrigerant shortage Blocked valve in cooling mode 1508 4 way valve trouble in heating mode _ 2500 Water leakage 2502 Drain over flow protection mm 2503 Drain sensor abnormality 4100 Compressor current interruption locked compressor 4210 Compressor overcurrentinterruption 4220 Undervoltage overvoltage PAM error L1open phase power synchroniz
220. ure sensor is 1kgf cm or D Defective high pressure sensor less during operation the compressor stops operation and enters into Decrease of internal pressure caused by gas an anti restart mode for 3 minutes leakage When the detected pressure is 1kgf cm immediately before restarting Disconnection or contact failure of connector the compressor falls into an abnormal stop with a check code 5201 G Malfunction of input circuit on outdoor multi controller G For 3 minutes after compressor restarting during defrosting operation circuit board and for 3 minutes after returning from defrosting operation above mentioned symptoms are not determined as abnormal eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards The black square m indicates a switch position III 63HS High pressure sensor Check the wiring and connector connection Is there any abnormality such as a disconnection looseness or Yes breakage Connect the wiring connector properly Replace it in case of a breakage Check an internal pressure of the refrigerant circuit Is the detected internal pressure normal Check the refrigerant circuit and refill refrigerant after repairing the leakage The detected pressure in 63HS can be displayed by an operation of SW1 on the outdoor multi controller circuit
221. ve high pressure sensor Defective high pressure sensor input circuit on outdoor multi controller circuit board eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Is 5201 displayed when restarted gt Refer to the diagnosis of check code 5201 5201 e 302 Is the outdoor stop valve liquid iaui gas fully open p liq gt gt Open the stop valve liquid gas fully Check the outdoor fan motor GE the outcoor fan rotate while gt Refer to How to check the parts on the the operation outdoor unit service manual Check the indoor fan motor ria ag fan rotate while gt Refer to How to check the parts on the p indoor unit servive manual Is the indoor unit short cycled gt Solve the short cycle short cycled e no short cycle Continue to the next page OCH576 93 1302 High pressure trouble Chart 2 of 4 eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Continued from the previous page Yes Clean the filter Clogged filter Is the indoor unit filter clogged No clog ZH Is there dirt on the indoor heat exchanger Wash the indoor heat exchanger dirty no di
222. will flash After approximately 30 seconds the state in effect before the diagnosis will be restored OCH576 108 pt For MA remote controller system Select Service from the Main menu and press the Q button Servicemenu 2 2 Maintenance password w gt Remote controller check Function setting Select Remote controller check with the F1 or F2 button and press the 2 button Main menu mam Ug eoe Select Remote controller check from the Service menu and press the 2 button to start the remote controller check and see the check re sults wy Start checking Remote controller check To cancel the remote controller check and exit the Remote controller Begin V check menu screen press the or the button m The remote controller will not reboot itself e ok No problems are found with the remote controller Check other Remote controller check results screen parts for problems Remote controller check E3 6832 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the transmission line and the other remote controllers NG ALLO ALL1 Send receive circuit fault Remote controller needs replacing ERC The number of data errors is the discrepancy between the number of Begin v bits in the data transmitted from the remote controller and that of the qata that was actually tra
223. y Malfunction of transmitting circuit on transmission processor 3 Noise interference on indoor outdoor connectors eDiagnosis of defectives Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis 2 If the wiring work was performed while the Ca n REN power ON turn the power OFF of indoor P i outdoor unit Fresh Master or Lossnay simultaneously for 2 minutes or more then turn the power back ON Turn the power back ON Y Does it operate normally Replace the indoor outdoor controller board Yes There is no abnormality on the AC unit It might be caused by an external noise so check the transmission line to remove the factor s OCH576 92 6603 Transmission bus BUSY error DOver error by collision The transmission processor is unable to transmit due Abnormal if no transmission status caused by a transmitting data to a short cycle voltage such as noise is mixed on collision is consecutive for 8 to 10minutes the transmission line Abnormal if a status that data is not allowed on the transmission line The transmission processor is unable to transmit due because of noise and such is consecutive for 8 to 10 minutes to an increase of transmission data amount caused by a miswiring of the terminal block transmission line TB3 and the terminal block centralized contr

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