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OCH791 _68

6832 (E3)/6833 (E5): MA communication send error

Chart 2 of 2

Diagnosis of failure

No abnormality

It might be caused by an external noise, so

check the transmission line to remove the

factor(s).

Connect the wiring properly as specified in the

chapter "Electrical Work" in the indoor unit

Installation Manual.

Refer to the chapter "Electrical Work".

Continued from the previous page.

Yes

Is the wiring connected properly

and meeting the conditions?

Содержание CITY MULTI PUMY-P200YKM3

Страница 1: ... 9 DISASSEMBLY PROCEDURE 97 10 SYSTEM CONSTRUCTION 104 11 ELECTRICAL WIRING 106 12 REFRIGERANT PIPING TASKS 107 13 REMOTE CONTROLLER 108 HFC utilized R410A Appendix Installation manual Exerpt of English Ver Model name indication PARTS CATALOG OCB791 Outdoor unit Model name PUMY P200YKM3 PUMY P200YKM3 ER PUMY P200YKM3 ET Salt proof model PUMY P200YKM3 BS PUMY P200YKM3 ERBS PUMY P200YKM3 ETBS ...

Страница 2: ...OCH791 _2 1 SERVICE REF PUMY P200YKM3 PUMY P200YKM3 ER PUMY P200YKM3 ET PUMY P200YKM3 BS PUMY P200YKM3 ERBS PUMY P200YKM3 ETBS ...

Страница 3: ...e pipes with specified thickness Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc Store the piping indoors and keep both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of compressor The refrigerant...

Страница 4: ...tting or deburring pipes do not allow cutting chips or other foreign matters to enter the pipes If cutting chips or other foreign matters enter pipes wipe them off the inside of the pipes Do not pump down the system when a gas leak has been detected The intake of air or other gases causes abnormally high pressure in the refrigeration cycle which may cause explo sion or injury 2 1 1 Cautions for se...

Страница 5: ...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 7 256 in or below Piping diameter and thickness Nominal dimensions in Outside diameter mm Thickness mm R410A R22 1 4 6 35 0 8 0 8 3 8 9 52 0 8 0 8...

Страница 6: ... other refrigerants can be used by adjusting flaring dimension Usable by adjusting flaring dimension Usable by adjusting flaring dimension Bender Bend the pipes Tools for other refrigerants can be used Pipe cutter Cut the pipes Tools for other refrigerants can be used Welder and nitrogen gas cylinder Weld the pipes Tools for other refrigerants can be used Refrigerant charging scale Refrigerant cha...

Страница 7: ... PFFY P VLEM E PFFY P VKM E2 Concealed PFFY P VLRM M E PFFY P VCM E Ceiling concealed Fresh air 2 PEFY P VMHS E F Lossnay GUF RD H 4 3 Remote controller Name M NET remote controller MA remote controller Model name PAR F27MEA E PAR U02MEDA PAR 4xMAA PAR 3xMAA x represents 0 or later Functions A handy remote controller for use in conjunction with the Melans centralized management system Address sett...

Страница 8: ...ure SEZ KD VA L SEZ M DA L SEZ M DA L 2 Middle static pressure PEAD RP JA L Q UK PEAD M JA L PEAD M JA L 2 4 way ceiling cassette 2 by 2 type SLZ KF VA2 SLZ M FA SLZ M FA2 Standard PLA RP EA UK PLA M EA PLA M EA2 Ceiling suspended PCA RP KAQ PCA M KA PCA M KA2 Floor standing MFZ KJ VE2 MFZ KT VG E2 1 way ceiling cassette MLZ KA VA MLZ KP VF Note The lineup of a connectable indoor unit depends on a...

Страница 9: ...Number of branches 2 4 8 1 The maximum total capacity of the units that can be connected to each branch box is 20 2 kW 2 Refer to 3 1 System construction or 3 2 System construction Branch box system for more detail 3 4 System Specifications 3 4 1 Outdoor Unit Outdoor unit Model name P200 Capacity Cooling kW 22 4 Heating kW 25 0 Cooling Heating capacity indicates the maximum value at operation unde...

Страница 10: ...20 25 32VLM PFFY P20 25 32VKM PFFY P20 25 32VCM PFFY P20 25 32VLEM PFFY P20 25 32VLRM M and M series S series and P series type indoor unit When connecting fresh air type indoor unit PEFY P VMHS E F Cooling Heating Indoor and outdoor intake air temperature D B 17 to 43 C 2 W B 15 5 to 35 C D B 10 to 20 C 3 2 Thermo OFF FAN mode automatically starts if the outdoor temp is lower than 17 C D B 3 Ther...

Страница 11: ...ernal dimension H W D mm 1 338 1 050 330 40 in 52 11 16 41 11 32 13 1 10 16 Protection devices High pressure protection High Pressure Switch Inverter circuit COMP FAN Overcurrent detection Overheat detection Heat sink thermistor Compressor Compressor thermistor Overcurrent detection Fan motor Overheating Voltage protection Overcurrent detection Refrigerant Type original charge R410A 7 3kg 16 1lbs ...

Страница 12: ...gure 1 CTi Σ Rated capacity of indoor unit Correction factor for indoor temperature 9 0 1 03 11 2 0 94 19 8 kW Calculation for the corrected capacity of the outdoor unit CTo Correction factor for outdoor temperature 38 C 0 96 Refer to Figure 2 Correction factor for piping length 40 m 0 91 Refer to Correcting Capacity CTo Rated capacity of outdoor unit Correction factor for outdoor temperature Corr...

Страница 13: ...utdoor temperature 2 C WB 1 00 Refer to Figure 4 Correction factor for piping length 40 m 0 98 Refer to Correcting Capacity Correction factor for defrosting 0 89 Refer to Table 1 CTo Rated capacity of outdoor unit Correction factor for outdoor temperature Correction factor for piping length Correction factor for defrosting 25 0 1 00 0 98 0 89 21 8 kW Table 1 Table of correction factor for frosting...

Страница 14: ...ing capacity Outdoor temperature C DB Indoor Temperature 5 0 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 52 0 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 19 C WB Correction factor of power input Outdoor temperature C DB Indoor Temperature 15 0 10 0 5 0 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 52 0 0 0 0 2 0 4 0 6 0 8 1 0 1 2 16 C WB 18 C WB 19 C WB 20 C WB 22 C WB 24 C WB ...

Страница 15: ...3 ET BS Operating conditions Ambient temperature Indoor DB WB 27 C 19 C 20 C Outdoor 35 C 7 C 6 C Indoor unit No of connected units Unit 8 No of units in operation 8 Model 25 7 50 1 Piping Main pipe m 5 Branch pipe 2 5 Total pipe length 25 Fan speed Hi Amount of refrigerant kg 11 0 Outdoor unit Electric current A 10 03 9 89 Voltage V 400 Compressor frequency Hz 71 86 LEV opening Indoor unit Pulse ...

Страница 16: ...10 0 12 0 14 0 16 0 18 0 20 0 22 0 24 0 26 0 28 0 30 0 0 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 380V 400V 415V Capacity kW Input kW Total capacity of indoor units kW Total capacity of indoor units kW Current A Total capacity of indoor units kW 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 24 0 26 0 28 0 30 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 ...

Страница 17: ...indoor units kW 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 24 0 26 0 28 0 30 0 0 0 5 0 10 0 15 0 20 0 25 0 30 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 24 0 26 0 28 0 30 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 20 0 22 0 24 0 26 0 28 0 30 0 0 0 2 0 4 0 6 0 8 0 10 0 12 0 380V 400V 415V ...

Страница 18: ... 11 2 16 8 22 4 29 1 Total capacity of indoor unit Cooling capacity correction factor Piping equivalent length m 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 0 70 0 75 0 80 0 85 0 90 0 95 1 00 Figure 5 Correction of refrigerant piping length 5 5 2 Heating Heating P200 model Total capacity of indoor unit Cooling capacity correction factor Piping equivalent length m 0 5 10 15 20 25 30 35 4...

Страница 19: ... 95 0 95 0 95 0 95 0 95 5 6 Noise criterion curves 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 µbar BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE COOLING MODE COOLING SILENT MODE 57 HEATING 61 SPL dB 54 LINE ...

Страница 20: ...OCH791 _20 6 OUTLINES AND DIMENSIONS Unit mm ...

Страница 21: ...OCH791 _21 7 WIRING DIAGRAM ...

Страница 22: ... Do not touch the transmission cable and remote controller cable with the tester The resistance should be over 1 0 MΩ Do not proceed inspection if the resistance is less than 1 0 MΩ 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 link...

Страница 23: ...e thermistor TH7 open short О Check delay code 1221 U4 5109 HIC pipe temperature thermistor TH2 open short О Check delay code 1222 U4 5110 Heat sink temperature thermistor TH8 open short О Check delay code 1214 F5 5201 High pressure sensor 63HS trouble О Check delay code 1402 F3 5202 Low pressure sensor 63LS trouble О Check delay code 1400 UH 5300 Primary current error О Check delay code 4310 P4 5...

Страница 24: ...lection Diagnosis of failure Check the connection of the communication line CN2 and CN4 between the outdoor multi controller circuit board and power circuit board Check the wiring Connect the CN2 and CN4 properly Replace them in the case of breakage Connect the wiring properly Replace them in the case of breakage Correct the model settings The communication circuit of either the outdoor controller...

Страница 25: ... circuit board LEV performance failure Defective indoor controller board Clogged refrigerant system caused by foreign object Refrigerant shortage Refrigerant liquid accumulation in compressor while indoor unit is OFF thermo OFF Diagnosis of failure Check the connection for thermistor wiring and indoor controller board connector Refer to the diagnosis of error code 5101 Open the stop valve liquid g...

Страница 26: ...ance of the outdoor multi controller circuit board Disconnect the thermistor wiring to check the resistance Disconnect the indoor LEV wiring and check the resistance Replace the outdoor multi controller circuit board Replace the thermistor Replace the indoor LEV Replace the indoor controller board Is the resistance detected Is the voltage normal value Is it free from any trace of overheating or bu...

Страница 27: ...ed airflow caused by faulty inspection of out door temperature thermistor It detects lower tempera ture than actual temperature Indoor LEV performance failure Malfunction of fan driving circuit SV1 performance failure Defective High pressure sensor Defective High pressure sensor input circuit on outdoor multi controller circuit board Diagnosis of failure Refer to the diagnosis of error code 5201 T...

Страница 28: ...ilter Continued from the previous page Wash the indoor heat exchanger Resolve the short cycle Wash the outdoor heat exchanger Check and repair piping Continue to the next page Disconnect the TH7 wiring and check the resistance Is the indoor unit filter clogged Is there dirt on the indoor heat exchanger Is the outdoor unit short cycled Is there dirt on the outdoor heat exchanger Are the pipes clogg...

Страница 29: ...controller board Check the resistance of SV1 For the voltage refer to How to check the components Continued from the previous page Replace the TH7 Replace the indoor LEV Disconnect the indoor LEV wiring to check the resistance Continue to the next page Is the resistance detected Is the resistance detected Is the voltage normal Is it free from any trace of overheating or burning ...

Страница 30: ... 63HS Replace the outdoor multi controller circuit board Reconnect the connector or connect it tightly Check the 63HS voltage Is the resistance detected Is the connector for outdoor multi controller circuit board 63H discon nected or loose Is the voltage detected No No No Yes Yes Yes For the voltage refer to How to check the components ...

Страница 31: ...es and checkpoints Disconnection or loose connection of TH4 Defective holder of TH4 Disconnection of LEV coil Disconnection of LEV connector LEV performance failure Diagnosis of failure temp resistance characteristic 0 C 32 F 700 kΩ 10 C 50 F 410 kΩ 20 C 68 F 250 kΩ 30 C 86 F 160 kΩ 40 C 104 F 104 kΩ Connect the wiring properly Replace the TH4 Connect the connector properly or replace the LEV Chec...

Страница 32: ...r LEV Continued from the previous page Replace the indoor controller board Replace the 63HS Replace the outdoor multi controller circuit board Check the voltage and appearance of the indoor controller board Check the 63HS voltage Is the resistance detected Is the voltage normal Is it free from any trace of overheating or burning Is the voltage detected No No No Yes Yes Yes ...

Страница 33: ...nts 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 Linear expansion valve 63HS High pressure sensor Diagnosis of failure Refer to the diagnosis of error code 5104 Check relevant thermistor wirings...

Страница 34: ...63HS Replace the indoor LEV Replace the indoor controller board Check the 63HS voltage Check the voltage and appearance of the outdoor multi controller circuit board Disconnect the indoor LEV wiring and check the resistance Replace the thermistor Is the resistance detected Is the voltage detected Is the voltage normal value Is it free from any trace of overheating or burning Is the resistance dete...

Страница 35: ...n Causes and checkpoints Outdoor liquid gas valve is closed Malfunction of outdoor LEV LEV1 blockage TH21 Indoor intake temperature thermistor RT11 or TH1 TH22 Indoor liquid pipe temperature thermistor RT13 or TH2 TH23 Indoor gas pipe temperature thermistor TH A to E LEV Linear expansion valve Diagnosis of failure Open the outdoor stop valve liquid gas fully Disconnect the outdoor LEV wiring to ch...

Страница 36: ...Wrong piping connection between indoor unit and branch box Miswiring between indoor unit and branch box Miswiring of LEV in branch box Malfunction of LEV in branch box Diagnosis of failure Connect the piping and wiring to the same port Connect the LEV wiring to the intended port properly Disconnect the LEV wiring of branch box or indoor unit to check the resistance Replace the LEV coil Replace the...

Страница 37: ... Defective outdoor power circuit board TH21 Indoor intake temperature thermistor RT11 or TH1 TH22 Indoor liquid pipe temperature thermistor RT13 or TH2 TH23 Indoor gas pipe temperature thermistor TH A to E Diagnosis of failure Reconnect the connector or connect it tightly Disconnect the connector for outdoor multi controller circuit board or 4 way valve coil to check the resistance Replace the 4 w...

Страница 38: ... circuit board Diagnosis of failure Open the stop valve liquid gas fully Check the looseness disconnection or breakage of compressor wiring Ensure power supply from the facility Check for power supply open phase Set the model selection switches correctly then restart Check the stop valve Check the power supply voltage Check if the model selection switches are set correctly on the indoor controller...

Страница 39: ...and W phase properly then turn the power back ON Replace the outdoor power circuit board Defective outdoor power circuit board Replace the compressor Defective compressor Check whether the compressor is faultily grounded or not Continued from the previous page Are they connected properly Is the compressor faultily grounded Yes Yes No No ...

Страница 40: ... Malfunction of indoor outdoor unit fan Short cycle of indoor outdoor unit Diagnosis of failure Open the stop valve liquid gas fully Check the looseness disconnection or breakage of compressor wiring Ensure power supply from the facility Check for power supply open phase Set the model selection switches correctly Check the outdoor stop valve Check whether the power supply voltage is normal or not ...

Страница 41: ...or fan motors Check for indoor outdoor short cycle 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 Make sure to perform a voltage check with the same performing frequencies Replace the outdoor multi controller circuit board Continued from the previous page Are they connected properly Does it operate n...

Страница 42: ... 6 7 8 SW1 Setting Display on LED1 2 1 2 3 4 5 6 7 8 a L1 open phase 3 phase model only b Disconnection of compressor wiring c Disconnection of terminal block for power supply d Disconnection of noise filter circuit board e Disconnection of power circuit board f Disconnection of CN52C 1 phase model only g Disconnection of CN5 3 phase model only h Disconnection of CN2 Check the power supply facilit...

Страница 43: ...broken Replace the outdoor power circuit board if the resistor is not broken Operate the unit and check if the problem occurs again Check the bus voltage read by the microprocessor with an operation of SW1 on the outdoor multi controller circuit board Check the bus voltage at the test points listed below on the outdoor power circuit board using a multimeter single phase model CNDC 1 2pin three pha...

Страница 44: ... error code 4400 Replace the thermistor Defective thermistor Replace the outdoor power circuit board Defective outdoor power circuit board Improve the airflow path Connect the wiring connector properly Replace it in the case of breakage Check the wiring and connector connection of TH8 Check the resistance of TH8 Is error code 5110 displayed when restarted Does the fan rotate during com pressor ope...

Страница 45: ...uit board Diagnosis of failure Connect the compressor wiring U V and W phase properly then turn the power back ON Replace the outdoor power circuit board or the outdoor multi controller circuit board Defective outdoor power circuit board Replace the compressor Defective compressor Turn the power OFF to check for looseness or disconnection of the compressor wiring 1 Disconnect the compressor wiring...

Страница 46: ...rmistor circuit No abnormality A connector contact failure is suspected Check the fuse on the outdoor multi controller circuit board Check the fan motor connector CNF1 and CNF2 for disconnection or looseness 1 While the breaker is OFF disconnect the compressor wiring U V W from the outdoor power circuit board 2 While the breaker is OFF disconnect the fan motor con nector CNF1 and CNF2 3 When 5 min...

Страница 47: ... square indicates a switch position Diagnosis of failure Connect the wiring connector properly Replace the connector in the case of breakage Replace the thermistor Replace the outdoor multi controller circuit board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check the wiring and connector connection of TH4 Disconnect the connector to check the resis ta...

Страница 48: ...ates a switch position Diagnosis of failure Connect the wiring connector properly Replace it in the case of breakage Replace the thermistor Replace the outdoor multi controller circuit board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check the wiring and connector connection of TH6 Disconnect the connector to check the resis tance of TH6 using a multi...

Страница 49: ...witch position Diagnosis of failure Connect the wiring connector properly Replace it in the case of breakage Replace the thermistor Replace the outdoor multi controller circuit board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check the wiring and connector connection of TH3 Disconnect the connector to check the resis tance of TH3 using a multimeter Ch...

Страница 50: ...reakage Replace the thermistor Replace the outdoor multi controller circuit board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check the wiring and connector connection of TH7 Disconnect the connector to check the resis tance of TH7 using a multimeter Check the temperature of TH7 The detected temperature of TH7 can be displayed by an operation of SW1 on...

Страница 51: ...breakage Replace the thermistor Replace the outdoor multi controller circuit board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check the wiring and connector connection of TH2 Disconnect the connector to check the resis tance of TH2 using a multimeter Check the temperature of TH2 The detected temperature of TH2 can be displayed by an operation of SW1 o...

Страница 52: ...age Replace the thermistor Replace the outdoor multi controller circuit board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check the wiring and connector connection of TH8 Disconnect the connector to check the resis tance of TH8 using a multimeter Check the temperature of TH8 The detected temperature of TH8 can be displayed by an operation of SW1 on the...

Страница 53: ...tor Malfunction of input circuit on outdoor multi controller circuit board The black square indicates a switch position Diagnosis of failure Connect the wiring connector properly Replace it in the case of breakage Check the refrigerant circuit and recharge refrigerant after repairing the leakage Replace the 63HS Replace the outdoor multi controller circuit board Check the wiring and connector conn...

Страница 54: ... multi controller circuit board The black square indicates a switch position Diagnosis of failure Connect the wiring connector properly Replace it in the case of breakage Check the refrigerant circuit and refill refrigerant after repairing the leakage Replace the 63LS Replace the outdoor multi controller circuit board Check the wiring and connector connection Check the internal pressure of the ref...

Страница 55: ...1 Model Error detecting condition 1 phase model 34 A or more for 10 consecutive seconds or 38 A or more The power supply voltage is decreased or abnormal Check the power supply facility Connect the compressor wiring properly Replace the outdoor power circuit board Malfunction of current sensor circuit Check the input current at the time of abnormal stop Check the compressor wiring for disconnectio...

Страница 56: ...of failure Correct the address and turn the power OFF of indoor outdoor unit Fresh Master or Lossnay simultaneously for 2 minutes or more then turn the power back ON Malfunction of sending receiving circuit on indoor outdoor unit is suspected 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 Search for a unit with t...

Страница 57: ...transmitting circuit on transmission pro cessor Noise interference on indoor outdoor connectors Diagnosis of failure If the wiring work was performed while the power was ON turn the power OFF of indoor outdoor unit Fresh Master or Lossnay simultaneously for 2 minutes or more then turn the power back ON Replace the indoor outdoor controller board There is no abnormality on the AC unit It might be c...

Страница 58: ...eater on the outdoor unit which is a function to connect dis connect transmission from to control system and cen tralized control system Diagnosis of failure Correct the wiring then turn the power back ON Correct the wiring then turn the power back ON Replace the indoor outdoor controller board There is no abnormality on the AC unit It might be caused by an external noise so check the transmission...

Страница 59: ...dental disturbance such as noise or lightning surge Hardware malfunction of transmission processor Diagnosis of failure Replace the controller Defect of error source controller 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 Turn the power OFF of indoor outdoor unit Fresh Master Lossnay and remote controller simul...

Страница 60: ...e indoor unit While operating with the indoor units in a different refrig erant system an abnormality is detected when the in door unit transmits 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 trans mission line Disconnection of transmission connector CN2M...

Страница 61: ... to the Lossnay while the outdoor unit in 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 displayed address attribute is not assigned to any controller The ...

Страница 62: ... the AC unit It might be caused by an external noise so check the transmission line to remove the factor s Set the address properly then perform the procedure 1 Refer to the diagnosis of check code 1302 High pressure trouble Check the address switch on the source of abnormality Check the transmission line for disconnection and looseness on the terminal board and connector Turn the power OFF of ind...

Страница 63: ... unnecessary address using a manual setting function on the remote controller Only for the system to which the Fresh Master Lossnay is connected or the system in which a group setting involving different refrigerant systems is made When operating in a single refrigerant system single indoor unit the controller of the dis played address attribute is defective Apply the correct kind of transmission ...

Страница 64: ...2 AWG 16 or more Accidental malfunction of error source controller Diagnosis of failure Replace the controller board Defect of the controller which the displayed address attribute belong to Connect the transmission line properly Correct it within the limits Replace it with the correct kind of transmission line There is no abnormality on the AC unit Check the transmission line for transmission wave...

Страница 65: ...g Malfunction of the remote controller sending receiving circuit Remote controller transmitting error caused by noise interference Diagnosis of failure Check the remote controller for main sub setting Conduct the remote controller diagno sis twice or more times Turn the power back ON No abnormality It might be caused by an external noise so check the transmission line Yes Set 1 remote controller t...

Страница 66: ...ed by an external noise so check the transmission line to remove the factor s Connect the wiring properly as specified in the chapter Electrical Work in the indoor unit Installation Manual Refer to the chapter Electrical Work Continued from the previous page Is the wiring connected properly and meeting the conditions Yes No ...

Страница 67: ...ontroller to main remote controller and the other to sub Disconnect and reconnect the connector CN3A then turn the power back ON Note It takes 6 seconds at maximum until the result is displayed No abnormality A connector or wiring contact failure is suspect ed Continue to the next page Turn the power back ON No abnormality It might be caused by an external noise so check the transmission line Repl...

Страница 68: ... by an external noise so check the transmission line to remove the factor s Connect the wiring properly as specified in the chapter Electrical Work in the indoor unit Installation Manual Refer to the chapter Electrical Work Continued from the previous page Yes No Is the wiring connected properly and meeting the conditions ...

Страница 69: ...hes of the out door unit is registered wrongly Diagnosis of failure Check the capacity code switch SW2 on the indoor controller board on the connected indoor unit Check the model selection switch SW4 on the outdoor multi controller circuit board of the outdoor unit Check the total capacity of connected indoor units Correct it so that the total capacity of connected indoor units is under 130 of the...

Страница 70: ...s incompatible The connectable indoor units are P10 to P200 model capacity code 2 to 40 When connecting via branch box P15 to P100 model capacity code 4 to 20 Diagnosis of failure Set the switch properly The capacity code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit Check the model selection switch SW4 on the indoor controller board of the connected indo...

Страница 71: ... units Connect at least 1 indoor unit Abnormal if connected none Connectable up to 2 branch boxes Diagnosis of failure Connect an indoor unit Reduce the number of the connected units to fall within the limit The capacity code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit Check whether the M NET line to the indoor unit is connected or not Check if at least...

Страница 72: ...set in 00 or in the range of 01 to 50 Branch box Set the address properly then turn the power OFF of indoor outdoor unit Fresh Master Lossnay and remote controller simultaneously for 2 minutes or more and turn the power back ON Replace the branch box controller board Check whether the branch box address is set in 00 or in the range of 01 to 46 Set the address properly then turn the power OFF of in...

Страница 73: ...k ON Replace the M NET RC sub Check whether the M NET RC sub address is set in 000 or in the range of 151 to 200 Set the address properly then turn the power OFF of indoor outdoor unit Fresh Master Lossnay and remote controller simultaneously for 2 minutes or more and turn the power back ON Replace the M NET RC main Check whether the M NET RC main address is set in 000 or in the range of 101 to 15...

Страница 74: ...zed to con nect to the outdoor unit Diagnosis of failure Replace the indoor unit s to the connectable one Refer to the service manual of the outdoor unit or the connected indoor unit for the authorized combination Set the model selection switches correctly then restart Replace the outdoor multi controller circuit board Is the indoor unit authorized to connect with the outdoor unit Check whether th...

Страница 75: ...nected to MA remote controller cable The transmission line of the indoor outdoor unit is short ed or down M NET remote controller cable is shorted or down Transmission outdoor power board failure Startup screen keeps being displayed or it is displayed periodically Startup screen is usually displayed about 3 minutes after the power supply of the outdoor unit is on The power supply for the feeding e...

Страница 76: ...cted 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 displayed or it is displayed peri odically Please Wait is usually displayed for 3 minutes after the power sup...

Страница 77: ...d on Display Heat Standby Ultra low speed operation for 5 minutes after SW ON or until piping temperature reaches 35 C 95 F Then low speed operates for 2 minutes and operates at the normal set air volume Hot adjust control Indoor unit remote controller shows Please Wait indicator for about 2 minutes when turning ON power supply Display Please Wait blinks The system is in the process of startup Ope...

Страница 78: ...re the power is turned ON SW5 Function switch Initial setting 1 ON OFF 2 3 4 5 6 7 8 The black square indicates a switch position Bit Function Operation in each switch setting Purpose Additional information ON OFF When to set 1 Demand control setting for Australia 1 Activated Deactivated Any time Turn ON to activate the demand control for Australia Do not turn this ON if the unit is in outside Aus...

Страница 79: ...ture raises the performance Switch to raise the temperature prevents condensation Switching it to lower the temperature it raises the power consumption and produces more condensation Switching it to raise the temperature it makes the performance insufficient 8 Switching 2 the target evaporation tempera ture ETm Activated Deactivated Any time SW7 Function switch Initial setting 1 ON OFF 2 3 4 5 6 T...

Страница 80: ...re locally G Max 10m 32 ft L1 Error display lamp L2 Compressor operation lamp X Y Relay coil rating 0 9W DC 12 VDC Auto changeover CN3N 1 3 A E B F G C D CN3N X Y SW1 SW2 1 2 3 Y X A Remote control panel B Relay circuit C External input adapter PAC SC36NA E D Outdoor unit control board E Relay power supply F Procure locally G Max 10 m 32 ft SW1 Switch SW2 Switch X Y Relay contact rating 0 1 A 15 V...

Страница 81: ...Orange Blue 220 22 kΩ White Blue Open Solenoid valve coil 4 way valve 21S4 Measure the resistance between the terminals with a multimeter at the ambient temperature 20 C 68 F Normal Abnormal 2085 208 5 Ω Open or short Motor for compressor MC W V U Measure the resistance between the terminals with a multimeter at the ambient temperature 20 C 68 F Normal Abnormal 0 305 0 015 Ω Open or short Solenoid...

Страница 82: ...circuit board TEST POINT 1 VDC between 1 and 4 of the fan connector 310 350 V DC three phase VDC between 1 and 4 of the fan connector 310 340 V DC when PAM stops 380 V DC when PAM is operating single phase TEST POINT 2 VCC between 5 and 4 of the fan connector VCC 15 V DC TEST POINT 3 VCC between 6 and 4 of the fan connector VCC 0 6 5 V DC Did the fuse blow Is there contact failure Is the voltage n...

Страница 83: ...r TH8 Heat sink Thermistor R50 17 kΩ 2 B constant 4150 3 Rt 17exp 4150 273 t 323 1 1 Temperature Resistance value 0 C 32 F 180 kΩ 25 C 77 F 50 kΩ 50 C 122 F 17 kΩ 70 C 158 F 8 kΩ 90 C 194 F 4 kΩ 200 150 100 50 0 25 50 75 100 125 Resistance kΩ Temperature C 77 122 167 212 257 F High temperature thermistor TH4 Compressor Thermistor R120 7 465 kΩ 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 Tem...

Страница 84: ...D1 2 does not change the high pressure sensor has a prob lem 3 Remove the high pressure sensor from the control board to check the pressure on the self diagnosis LED1 2 When the pressure displayed on the self diagnosis LED1 2 is between 0 and 0 098 MPaG 14 psig the high pres sure sensor has a problem When the pressure displayed on the self diagnosis LED1 2 is approximately 5 0 MPaG 725 psig the co...

Страница 85: ...iagnosis LED1 2 does not change the low pressure sensor has a prob lem 3 Remove the low pressure sensor from the control board to check the pressure with the self diagnosis LED1 2 When the pressure displayed on the self diagnosis LED1 2 is between 0 and 0 098 MPaG 14 psig the low pres sure sensor has a problem When the pressure displayed on the self diagnosis LED1 2 is approximately 1 7 MPaG 247 p...

Страница 86: ...ard 0 5V DC 2 5 Zero cross signal 0 5 V DC 3 4 Not used 6 5 15 V DC 7 5 15 V DC CNDC 310 340 V DC 1 3 VCC TEST POINT2 Voltage between pins of C82A 15 V DC Same as CNF1 2 5 4 VSP Voltage between pins of C515 and C516 0 V DC when stopped 1 6 5 V DC when operated Same as CNF1 2 6 4 CNF1 2 Connect to fan motors 1 4 310 340 V DC 5 4 15 V DC 6 4 0 6 5 V DC 7 4 15 V DC when stopped 0 15 V DC pulse when o...

Страница 87: ...to the outdoor noise filter circuit board LO1 LO2 LO3 400 V AC CN4 Connect to the outdoor multi controller circuit board CN4 CN6 Thermistor Heat sink TH8 L3OUT L3IN Lead connect CN5 Detection of primary current Connect to the outdoor noise filter circuit board CNCT DIP IPM If they are short circuited it means that they are broken Measure the resistance in the following points connectors etc Brief ...

Страница 88: ...ect to the outdoor noise filter circuit board CNAC1 Y Connect to the outdoor power circuit board CNAC1 V Connect to the electrical parts box CN2 Connect to the outdoor multi controller circuit board CN102 24 30 V DC 24 30 V DC 1 2 3 4 220 240 V AC 1 3 ...

Страница 89: ...o the outdoor power circuit board TB L1 TBL2 TB L3 LI1 LI2 LI3 NI POWER SUPPLY LI1 LI2 LI2 LI3 LI3 LI1 400V AC input LI1 NI LI2 NI LI3 NI 230V AC input Connect to the terminal block TB1 El Connect to the electrical parts box CNAC1 230 V AC Connect to the M NET power circuit board CN1 3 1 CNL Connect to the ACL4 CNAC2 230 V AC Connect to the outdoor multi controller circuit board CNAC E3 Connect to...

Страница 90: ...lities remaining in abnormality delay 8 00010000 Abnormality delay history 1 High pressure abnormality delay Superheat due to low discharge temperature delay Compressor shell tem perature abnormality delay TH4 abnor mality delay TH3 abnor mality delay Outdoor fan rotation frequency abnormality delay TH7 abnor mality delay TH8 abnor mality delay Note Display all abnormalities remaining in abnormali...

Страница 91: ... 9 Arms Note Display detected current 41 10010100 Input current of outdoor unit 42 01010100 Thermo ON operating time 0000 9999 unit x10 Note Display cumulative time of thermo ON operation 43 11010100 Total capacity of thermo ON 0 255 Note Display total capacity code of indoor units in thermo ON 44 00110100 Number of indoor units 0 255 Note Display number of connected indoor units 45 10110100 DC bu...

Страница 92: ...or unit sensors and thermistors 75 11010010 TH4 Compressor Td data 99 9 999 9 C Note Display detected data of outdoor unit sensors and thermistors 76 00110010 TH6 Suction pipe ET data 77 10110010 TH7 Ambient data 78 01110010 TH3 Outdoor liquid pipe data 80 00001010 TH8 Heat sink data 81 10001010 IC1 TH23 Gas 99 9 999 9 C When indoor unit is not connected it is displayed as 0 Note Display detected ...

Страница 93: ... 123 11011110 Target indoor SC SH IC12 124 00111110 IC9 LEV opening pulse abnormality delay 0 2000 pulse Note Display of opening pulse of indoor LEV at time of abnormality delay 125 10111110 IC10 LEV opening pulse abnormality delay 126 01111110 IC11 LEV opening pulse abnormality delay 127 11111110 IC12 LEV opening pulse abnormality delay 128 00000001 Actual frequency of abnormality delay 0 255 Hz ...

Страница 94: ...ring heating subcool SC During cooling superheat SH Fixed to 0 during cooling operation Note Display of indoor SC SH data at time of abnormality 156 00111001 IC10 SC SH at time of abnormali ty 157 10111001 IC11 SC SH at time of abnormali ty 158 01111001 IC12 SC SH at time of abnormali ty 159 11111001 IC9 Capacity code 0 255 Notes Display of indoor unit capacity code The No 1 unit will start from t...

Страница 95: ...tors and SC SH at time of abnormality 201 10010011 TH4 Compres sor sensor data at time of abnormality 99 9 999 9 C Note Display of data from high pressure sensor all thermistors and SC SH at time of abnormality 202 01010011 TH6 Suction pipe sensor data at time of abnormality 203 11010011 TH3 Outdoor liquid pipe sensor data at time of abnormality 204 00110011 TH8 Heat sink sensor data at time of ab...

Страница 96: ...y delay 237 10110111 IC8 LEV opening pulse abnormality delay 238 01110111 IC6 SC SH at time of abnormali ty delay 99 9 999 9 C During heating subcool SC During cooling superheat SH Fixed to 0 during cooling operation Note Display of indoor SC SH data at time of abnormality delay 239 11110111 IC7 SC SH at time of abnormali ty delay 240 00001111 IC8 SC SH at time of abnormali ty delay 241 10001111 I...

Страница 97: ... 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 the electrical parts box 6 Remove 4 fan motor fixing screws 5 20 to detach the fan motor See Photo 3 Note Tighten the propeller fan with a torque of 5 7 0 3N m 4 2 0 2 lbf ft Photo 2 Propeller Front panel Nut Photo 3 Fan motor fixing screws Fan motor ...

Страница 98: ...ock TB1 Terminal block TB1B Hook Hooks 4 Removing the thermistor Suction pipe TH6 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 the side of the electrical parts box 5 Pull out the thermistor Suction pipe TH6 from the sensor ho...

Страница 99: ...e connector 21S4 green on the outdoor multi controller circuit board in the electrical parts box 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 10 and 4 ball valve and stop valve fixing screws 5 16 and then remove the valve bed See Photo 4 and 7 5 Remove 2 cover ...

Страница 100: ...o 1 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See Photo 5 4 Remove the cover panel front Refer to procedure 8 5 5 Remove the cover panel rear Refer to procedure 8 6 6 Remove the side panel R Refer to procedure 8 7 7 Pull out the lead wire of high pressure switch 8 Recover refrigerant 9 Remove the welded part of high pressure switch Notes Recover refrigerant without sprea...

Страница 101: ... Remove the side panel R Refer to procedure 8 7 7 Remove the linear expansion valve coil 8 Recover refrigerant 9 Remove the welded part of linear expansion valve Note Recover refrigerant without spreading it in the air The welded part can be removed easily after removing the side panel R When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 100 C or more t...

Страница 102: ... nuts for motor using spanner or adjustable wrench 12 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 15 Compressor MC Valve bed Valve bed fixing screw Valve bed fixing screws Compressor fixing nuts Compressor fixing nuts Separator Accumulator Figure 1 Separator fixing screws Separator fix...

Страница 103: ...OCH791 _103 Photo 16 Accumulator Inlet Outlet Photo 17 Accumulator Accumulator leg Accumulator leg fixing screws ...

Страница 104: ...0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 Address SW 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 Address SW SW1 ON 1 2 3 4 5 6 SW1 ON 1 2 3 4 5 6 CITY MULTI Indoor unit 009 CITY MULTI Indoor unit 010 MA remote controller CITY MULTI 001 050 For centralized management 061 Outdoor unit For Branch box CITY MULTI indoor unit 0 1 2 3 4 5 6 7 8 9 Address SW 0 1 2 3 4 5 6 7 8 9 CITY MULTI Indoor unit 011 CITY M...

Страница 105: ...EV B Strainer Strainer Service port Refrigerant liquid pipe Stop valve Strainer Strainer Capillary tube for oil separator ø2 5 ø0 8 L1000 Capillary tube for solenoid valve ø4 0 ø3 0 L500 Refrigerant piping specifications dimensions of flared connector Unit mm in Item Capacity Liquid piping Gas piping Indoor unit P10 P15 P20 P25 P32 P40 P50 ø6 35 1 4 ø12 7 1 2 P63 P80 P100 P125 P140 ø9 52 3 8 ø15 8...

Страница 106: ...OCH791 _106 11 ELECTRICAL WIRING Refer to installation manual 6 Electrical work for details ...

Страница 107: ...ditional charged amount at field installation Note When the air conditioning system consists of several independent refrigerant system figure out the total refrigerant amount by each independent refrigerant system 2 Calculate room volumes m3 and find the room with the smallest volume The part with represents the room with the smallest volume 2 1 Situation in which there are no partitions Indoor un...

Страница 108: ...acklight is off pressing any button except for the ON OFF button turns the backlight on and it will stay lit for a certain period of time depending on the screen 6 ON OFF lamp This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error F1 Function button 1 Main display Press to change the operation mode Menu screen The ...

Страница 109: ...ized control system 14 Appears when the Weekly timer is enabled 15 Appears while the units are operated in the energy saving mode Will not appear on some models of indoor units 16 Appears while the outdoor units are operated in the silent mode 17 Appears when the built in thermistor on the remote controller is activated to monitor the room temperature 11 Appears when the thermistor on the indoor u...

Страница 110: ...Maintenance information Filter information Cleaning Settings menu Check menu Other menu Auto descending panel Descending operation Self check Descending adjustment Remote controller check Collect model names and serial No Wi Fi interface setting Main menu list Main menu Setting and display items Setting details Operation Vane 3D i See Vent Vane Vent Lossnay Vane Use to set the vertical air directi...

Страница 111: ...Weekly timer setting Restriction setting Outdoor unit silent mode setting Night set back Display setting Main display Use to switch between Full and Basic modes for the Main display and use to change the background colors of the display to black Display details Make the settings for the remote controller related items as necessary Clock The initial settings are Yes and 24h format Temperature Set e...

Страница 112: ...roller has been received Signals can be received up to approximately 7 meters in a direct line from the indoor unit in an area 45 to the left and right of the unit However illumination such as fluorescent lights and strong light can affect the ability of the indoor unit to receive sig nals If the operation lamp near the receiver on the indoor unit is blinking the unit needs to be inspected Consult...

Страница 113: ...midity Sensor The sensor detects the room temperature and the relative humidity 4 LED Indicator The LED indicator indicates the operation status in different colors The LED indicator lights up during normal operation lights off when units are stopped and blinks when an error occurs 5 Touch panel Backlit LCD The touch panel shows the operation settings screen When the backlight is off touching the ...

Страница 114: ... the error information later While no errors are occurring page 2 2 of the error information can be viewed by selecting Error information from the maintenance menu Errors cannot be reset on this screen Main menu Cursor Maintenance menu Error information Filter information Cleaning F1 F2 F3 F4 13 3 Service menu Note Maintenance password is required to set each item in the service menu Operating ins...

Страница 115: ...Please stop the unit Notes To go back to the service menu press button To return to the previous screen press button 13 4 Test run 13 4 1 PAR 41MAA Operating instructions 1 Select Service from the Main menu and press the button 2 Select Test run with the F1 or F2 button and press the button u n e m e c i v r e S r o s r u C u n e m n i a M Test run Input maintenance info Settings Check Others F1 F...

Страница 116: ...arm air blows out from the unit 5 Press the FAN button and check whether strong air blows out from the unit 6 Press the VANE button and check whether the auto vane operates properly 7 Press the button to stop the test run Notes Point the remote controller towards the indoor unit receiver to perform steps 2 to 7 It is not possible to run in FAN DRY or AUTO mode ON OFF TEMP FAN VANE MODE CHECK LOUVE...

Страница 117: ...can be monitored The test run will automatically end in 2 hours Notes When AHC is controlled from the controller To monitor the operating status of AHC touch the button on the Test run screen and access the General equip ment screen To set the humidity setting for the humidifier when one is connected to the AHC touch the button on the Indoor unit setting screen Cool Mode ON 001 Pipe 9 0 C MON 10 4...

Страница 118: ...remote controller Function selection using wireless remote controller is avail able only for refrigerant system with wireless function Refrigerant address cannot be specified by the wireless remote controller Operating instructions 1 Press the CHECK button twice continuously CHECK appears and 00 blinks Press the TEMP button once to set the address number to 50 Direct the wireless remote controller...

Страница 119: ...use the wireless remote controller for 30 seconds after completing the function setting ON OFF TEMP FAN VANE MODE CHECK LOUVER TEST RUN AUTO STOP AUTO START h min CHECK RESET SET CLOCK ON OFF button Check button Temperature setting buttons Hour button Minute button 13 5 3 PAR SL101A E Operating instructions 1 Go to the function select mode Press the button for 5 seconds Start this operation from t...

Страница 120: ... functions if any of the initial settings has been changed after the completion of installation work 13 6 Error history Operating instructions 1 Open the Service menu and select Check Select Service from the main menu and press the button Select Check with the F1 or F2 button and press the button u n e m e c i v r e S r o s r u C u n e m n i a M Test run Input maintenance info Settings Check Other...

Страница 121: ...k with the F1 or F2 button and press the button Self check screen will appear Diagnosis Cursor Service menu Self check Remote controller check F1 F2 F3 F4 2 Enter the M NET address with the F1 or F2 button and press the button Check code unit number attribute and indoor unit demand signal ON OFF status at the contact will appear will appear when there is no error history Error histrory is not show...

Страница 122: ...operation light blinks and the check code is output It takes 3 seconds at most for check code to appear 4 Point the remote controller at the sensor of the indoor unit and press the button The check mode is cancelled ON OFF TEMP FAN VANE MODE CHECK LOUVER TEST RUN AUTO STOP AUTO START h min RESET SET CLOCK CHECK CHECK display Temperature button CHECK button Refrigerant address display HOUR button O...

Страница 123: ...Start the remote controller check Select Remote controller check from the Diagnosis menu and press the button to start the remote controller check and see the check results Notes To cancel the remote controller check and exit the Remote controller check menu screen press the or the button The remote controller will not reboot itself F1 F2 F3 F4 Remote controller check Begin Start checking 3 Check ...

Страница 124: ... service screen 4 Setup screen will appear Home Date and time Schedule Timer Night setback Menu 1 2 User Service Home Menu Setup Error menu Test run User Service Back Setup Interlocked LOSSNAY Group setting Search connection information LED Room name Set to Auto Cool Mode ON Menu 26 0 C 17 0 C Room 23 5 C 50 RH MON 12 45 7 Home screen Menu User screen Menu Service screen Setup screen Group setting...

Страница 125: ...C 001 Add 1 Add 2 Set Conf Function 013 Del Search connection information Use this screen to specify a unit and search for the controllers that are connected to the unit 1 Select an address in the Address field 2 Touch the Conf button to search for the interlocked units The results will appear in the left column When multiple units are found the addresses that do not fit on the first page will app...

Страница 126: ...FICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2022 MITSUBISHI ELECTRIC CORPORATION Published Jun 2022 No OCH791 Made in Japan Specifications are subject to change without notice ...

Страница 127: ...0YKM3 PUMY P200YKM3_Declaration of Conformity UK2022A11 PUMY P200YKM3_InstallationManual BH79D826H10 PUMY P200YKM3_Parts Catalogue OCB791 PUMY P200YKM3_ServiceManual OCH791 Y Series Mini VRF Twin Fan 12 5 33 5kW Product Information Sheet ...

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