Mitsubishi Electric City Multi PKFY Series Technical & Service Manual Download Page 9 | Manualshive

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9

6

REFRIGERANT SYSTEM DIAGRAM

Strainer
(#100mesh)

Strainer
(#100mesh)

Strainer
(#100mesh)

Heat exchanger

Room temperature thermistor
TH21

Gas pipe temperature thermistor
TH23

Liquid pipe temperature thermistor
TH22

Gas pipe

Liquid pipe

Flare

Linear expansion

valve

PKFY-P06NBMU-E

PKFY-P08NBMU-E

PKFY-P06NBMU-ER1 PKFY-P08NBMU-ER1

Unit: mm(inch)

Service ref.

Item

PKFY-P06/08NBMU-E

PKFY-P06/08NBMU-ER1

Gas pipe

{

12.7 (1/2”)

Liquid pipe

{

6.35 (1/4”)

OCH461B

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Summary of Contents for City Multi PKFY Series

Page 1: ...f PKFY P06NBMU E PKFY P06NBMU ER1 PKFY P08NBMU E PKFY P08NBMU ER1 No OCH461 REVISED EDITION B SPLIT TYPE HEAT PUMP AIR CONDITIONERS R22 R410A Note This manual describes only service data of the indoor units RoHS compliant products have G mark on the spec name plate September 2012 PARTS CATALOG OCB461 INDOOR UNIT Model name indication PKFY P06NBMU E PKFY P08NBMU E Revision 8 2 Function of Dip switc...

Page 2: ...pecified refrigerant only 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 f...

Page 3: ...splays the order of timer operation display Displays whether timer is on or off In case the outdoor unit is cool only type the heating and auto mode are not available Buttons used to set the hour and minute of the current time and timer settings h and min buttons display display FAN SPEED display indicates which fan speed has been selected display The vertical direction of air flow is indicated di...

Page 4: ...ture The room temperature display range is 46 102 F The display blinks if the temperature is less than 46 F or 102 F or more Louver display Indicates the action of the swing louver Does not appear if the louver is not running Power On indicator Indicates that the power is on Fan Speed indicator Shows the selected fan speed Ventilation indicator Appears when the unit is running in Ventilation mode ...

Page 5: ...88HA E 1 phase 208 230V 60Hz Cross fin Aluminum fin and copper tube 1 phase induction motor Direct driven by motor Polyethylene sheet PP honeycomb Fuse LEV R410A R22 CITY MULTI PKFY P06NBMU E PKFY P06NBMU ER1 Plastic MUNSELL 1 0Y 9 2 0 2 1 8 6 000 0 03 0 15 2 0 6 700 0 03 0 15 295 815 225 11 5 8 32 1 8 8 7 8 10 22 Line flow fan 1 0 0 0 008 I D 16mm 5 8 ø6 35 ø1 4 ø6 35 ø1 4 ø12 7 ø1 2 ø12 7 ø1 2 F...

Page 6: ... limit switch Linear expansion valve Power supply terminal block Transmission terminal block DC12V Stepping motor drive Port 3 2 0 2000pulse MA remote controller terminal block Measured in anechoic room 3 3 ft 1m Measurement location PKFY P06NBMU E PKFY P06NBMU ER1 PKFY P08NBMU E PKFY P08NBMU ER1 32 33 35 36 Sound level dB A Sound level at anechoic room Low Middle2 Middle1 High Service Ref 32 33 3...

Page 7: ...ss setting Connection No Address board Direction installaion plate Air intake Air outlet Direction Required space 5 8 16 I D 1 2F 12 7 1 4F 6 35 Drain pipe Liquid pipe Gas pipe Refrigerart piping Liquid pipe Gas pipe Air outlet Air intake Air intake 13 32 10 13 32 10 16 1 32 407 5 11 23 32 298 10 1 4 260 8 27 32 225 7 15 32 190 6 3 32 155 4 23 32 120 3 11 32 85 1 3 16 30 16 1 32 407 5 12 29 32 328...

Page 8: ...detail refer to the Fig 1 6 Please set the switch SW5 according to the power supply voltage Set SW5 to 230V side when the power supply is 230 volts When the power supply is 208 volts set SW5 to 208V side 1 2 A B SW1 SW1 SW5 RU BZ LED1 LED Operation indicator Green LED Preparation for heating Orange Emergency operation Heat Emergency operation Cool LED2 SW11 SW12 SW14 Voltage selection Address sett...

Page 9: ...rmistor TH21 Gas pipe temperature thermistor TH23 Liquid pipe temperature thermistor TH22 Gas pipe Liquid pipe Flare Linear expansion valve PKFY P06NBMU E PKFY P08NBMU E PKFY P06NBMU ER1 PKFY P08NBMU ER1 Unit mm inch Service ref Item PKFY P06 08NBMU E PKFY P06 08NBMU ER1 Gas pipe 12 7 1 2 Liquid pipe 6 35 1 4 OCH461B ...

Page 10: ... temp TH22 is 32 F or less in 16 minutes from compressors start up anti freezing control starts and the thermo OFF Released condition The timer which prevents reactivating is set for 3 minutes and anti freezing control is cancelled when any one of the following conditions is satisfied Liquid pipe temp TH22 turns 50 F or above The condition of the thermo OFF has become complete by thermo stat etc T...

Page 11: ...4 F Over 64 F ON OFF T1 83 F 83 F T1 79 F 79 F T1 75 F 75 F T1 Unconditional 9 3 7 3 5 3 3 3 10 3 Dry thermo OFF 2 Fan Note Remote controller setting is not acceptable Dry thermo Fan speed notch Excluding the following Room temp 64 F ON OFF Low Low Stop 3 Vane up down vane change Same control as COOL operation PAR 21MAA ON OFF FILTER CHECK OPERATION CLEAR TEST TEMP MENU BACK DAY MONITOR SET CLOCK ...

Page 12: ... restriction on the vane s downward blow setting Same control as COOL operation PAR 21MAA ON OFF FILTER CHECK OPERATION CLEAR TEST TEMP MENU BACK DAY MONITOR SET CLOCK ON OFF û Fû C û Fû C ERROR CODE AFTER TIMER TIME SUN MON TUE WED THU FRI SAT ON OFF Hr AFTER FILTER FUNCTION ONLY1Hr WEEKLY SIMPLE AUTO OFF 7 3 FAN OPERATION How to operate Press POWER ON OFF button Press the operation MODE button t...

Page 13: ...his control is same for the model without auxiliary heater 1 STAND BY will be displayed during the hot adjust mode To be continued on the next page By the remote controller setting switch of 4 speeds Give priority to under mentioned controlled mode 2 1 Hot adjust mode 2 2 Residual heat exclusion mode 2 3 Thermo OFF mode When the compressor off by the thermo stat 2 4 Cool air prevention mode Defros...

Page 14: ...re Desired temperature COOL mode for room temperature Desired temperature 1 HEAT mode COOL mode Room temperature Desired temperature 3 F or 3 min has passed 2 COOL mode HEAT mode Room temperature Desired temperature 3 F or 3 min has passed 1 Initial value of operation mode Remarks 2 Mode change Same control as cool operation 3 COOL mode Same control as heat operation 4 HEAT mode PAR 21MAA ON OFF F...

Page 15: ... Gas pipe temperature thermistor TH23 Normal 4 3k 9 6k Abnormal Open or short Normal 200 10 Abnormal 1 5 White Red 2 6 Yellow Brown 3 5 Orange Red 4 6 Blue Brown Open or short 1 2 3 4 5 6 LEV White Yellow Orange Blue Red Brown CN60 Vane motor MV Measure the resistance between the terminals with a tester At the ambient temperature 77 F Normal Normal 400 7 Abnormal Red White Red Blue Red Orange Red ...

Page 16: ...5kΩ 3 Fixed number of B 3480 2 Rt 15exp 3480 30 F 15 8kΩ 50 F 9 6kΩ 70 F 6 0kΩ 80 F 4 8kΩ 90 F 3 9kΩ 100 F 3 2kΩ Thermistor for lower temperature Operation summary of the linear expansion valve Linear expansion valve open close through stepping motor after receiving the pulse signal from the indoor controller board Valve position can be changed in proportion to the number of pulse signals Connecti...

Page 17: ...he color of lead wire and missing terminal of the con nector Exchange the linear expan sion valve Exchange the linear expan sion valve If large amount of refriger ant is leaked exchange the linear expansion valve Disconnect the connector at the controller board then check the continuity Measure the resistance between each coil white red yellow brown orange red blue brown using a tester It is norma...

Page 18: ...g 3 First setting Effective Not effective Heating 4 degree 4 C up Not effective Effective Target superheat setting 2 Tartget subcool setting 2 ON OFF 1 2 3 4 5 6 7 8 9 1 Indoor controller board Initial setting SW3 Function selection Under suspension SW2 Capacity code Before power supply ON switch Effective timing Switch Pole Function Operation by switch Remarks Changing the opening of linear expan...

Page 19: ...ress the SET button using a pointed implement Check that the remote controller s display has stopped before continuing MODEL SELECT flashes and the model No 3 digits appears steadily lit 2 Press the MINUTE button twice The pair number appears flashing 3 Press the temperature buttons to select the pair number to set 4 Press the SET button using a pointed implement The set pair number is displayed s...

Page 20: ...ion valve output LEV 12VDC pulse output SW3 Mode selection CN51 Centrally control 1 2 Control signal 12VDC pulse input 1 3 4 Operation indicator 12VDC 3 3 5 Malfunction indicator 12VDC 3 SW2 Capacity setting CN5V Vane motor output MV 12VDC pulse output CN20 Room temperature thermistor TH21 CN53M Connected to the indoor power board CN53P Between 1 to 2 24 30V DC non polat Between 3 to 5 12 5 13 7V ...

Page 21: ...ain power supply Indoor unit 208 230V CN35P Connected to the indoor controller board CN35M CN2M Connected to the terminal block TB5 M NET transmission connecting wire 24 30V DC non polar FAN Fan motor output MF CND Power supply for indoor controller board Between 1 to 3 208 230V AC 8 3 2 Indoor power board PKFY P06NBMU E PKFY P08NBMU E PKFY P06NBMU ER1 PKFY P08NBMU ER1 OCH461B ...

Page 22: ... PKFY P08NBMU E PKFY P06NBMU ER1 PKFY P08NBMU ER1 FUSE 6A 250V CN53P Connected to the indoor controller board CN53M Between 1 to 2 24 30V DC non polar Between 3 to 5 12 5 13 7V DC Pin3 Between 4 to 5 11 5 12 7V DC Pin4 LED1 Main power supply Indoor unit 208 230V CN35P Connected to the indoor controller board CN35M CN2M Connected to the terminal block TB5 M NET transmission connecting wire 24 30V D...

Page 23: ... upper side of the vane approximately 2 to 3 cm 1 Remove the 3 screw caps then remove the 3 set screws Refer to the Photo 1 2 Remove the grille 3 Remove the left side of the front panel then right side 4 After removing the lower side of the front panel a little remove it as pulling the upper side toward you Please pay attention to the nozzle assembly INSTALLING THE FRONT PANEL 1 Insert the lower s...

Page 24: ...rd you as opening the catch of the nozzle assembly See the Photo 5 4 Disconnect the indoor outdoor transmission wiring of TB5 5 Disconnect the power supply wiring of TB2 6 Disconnect the relay connector of MA remote controller 7 Disconnect the following connector on the indoor controller board CN60 CN5V CN29 CN21 CN90 CN3A 8 Disconnect the connector FAN on the indoor power board 9 Remove the groun...

Page 25: ... hand side of the heat exchanger toward you See the Photo 7 8 Remove the line flow fan Photo 6 Heat exchanger Fan motor Photo 7 Heat exchanger 7 REMOVING THE VANE MOTOR 1 Remove the front panel 2 Remove the screw of the electrical parts box cover and remove the cover 3 Remove the 2 screws of the vane motor Disconnect the relay connector and remove the motor from the shaft 4 Disconnect the vane mot...

Page 26: ...he vane approximately 2 to 3 cm 1 Remove the 3 screw caps then remove the 3 set screws See the Photo 1 2 Remove the grille 3 Remove the left side of the front panel then right side 4 After removing the lower side of the front panel a little remove it as pulling the upper side toward you Please pay attention to the nozzle assembly INSTALLING THE FRONT PANEL 1 Insert the lower side of the front pane...

Page 27: ...lectrical box Photo 3 Indoor controller board Indoor power board Room temperature thermistor TH21 Screw for electrical box cover Electrical box Water cut fixing screw Water cut 4 REMOVING THE NOZZLE ASSEMBLY AND DRAIN HOSE 1 Remove the front panel Refer to procedure 2 2 Remove the electrical box cover See the Photo 2 3 Disconnect the connector CN5V on the indoor controller board 4 After unhook the...

Page 28: ...ove the electrical box cover See the Photo 2 3 Remove the water cut See the Photo 3 4 Pull the nozzle assembly toward you as opening the catch of the nozzle assembly See the Photo 4 5 Disconnect the indoor outdoor transmission wiring of TB5 6 Disconnect the power supply wiring of TB2 7 Disconnect the relay connector of MA remote controller 8 Disconnect the following connector on the indoor control...

Page 29: ...r Vane motor Nozzle assembly 9 REMOVING THE LIQUID PIPE THERMISTOR AND GAS PIPE THERMISTOR 1 Remove the front panel Refer to procedure 2 2 Remove the electrical box cover See the Photo 2 3 Remove the water cut See the Photo 3 4 Cut the wiring fixed band 5 Remove the liquid pipe thermistor and gas pipe thermistor See the Photo 10 6 Disconnect the connector CN29 CN21 on the indoor controller board P...

Page 30: ...EVISED EDITION B Distributed in Nov 2011 No OCH461 REVISED EDITION A Distributed in Apr 2009 No OCH461 PDF 7 Made in Japan New publication effective Sep 2012 Specifications are subject to change without notice HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN TM ...

Page 31: ...ed in Nov 2011 No OCH461 REVISED EDITION A Distributed in Apr 2009 No OCH461 PDF 7 Made in Japan New publication effective Nov 2011 Specifications are subject to change without notice HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN TM ...

Page 32: ... OCH461 Indoor unit Model names Service Ref INDOOR UNIT R22 R410A Note RoHS compliant products have G mark on the spec name plate Model name indication PKFY P06NBMU E PKFY P06NBMU ER1 PKFY P08NBMU E PKFY P08NBMU ER1 PKFY P06NBMU E PKFY P08NBMU E Revision PKFY P06 08NBMU ER1 have been added in REVISED EDITION A Some descriptions have been modified Please void OCB461 ...

Page 33: ... RIGHT 1 1 4 G R01 H01 500 AIR FILTER 2 2 5 G R01 E53 691 GRILLE 1 1 6 G R01 E00 054 GRILLE CATCH 2 2 7 G R01 E08 096 SCREW CAP 1 1 3pcs set 8 G R01 24A 658 CORNER BOX 1 1 9 G R01 23A 808 BACK PLATE 1 1 10 G R01 Y05 480 HEAT EXCHANGER 1 with connect pipe G R01 Y07 480 HEAT EXCHANGER 1 with connect pipe 11 G R01 H23 401 LINER EXPANSION VALVE 1 1 LEV 12 G R01 E00 525 WATER CUT 1 13 G R01 E06 305 REM...

Page 34: ...S BOARD 1 1 A B 10 G T7W E04 304 ADDRESS CABLE 1 1 11 G R01 E00 323 WIRELESS ADAPTER ASSY 1 1 with case W B 12 G T7W E43 716 TERMINAL BLOCK 3P L1 L2 GR 1 1 TB2 13 G T7W E42 716 TERMINAL BLOCK 2P M1 M2 1 1 TB5 14 G T7W E37 313 POWER BOARD 1 1 P B 15 G T7W E84 310 INDOOR CONTROOLER BOARD 1 1 I B 16 G R01 23A 105 RUBBER MOUNT 2 2 17 G R01 H14 202 PIPE TEMPERATURE THERMISTOR GAS 1 1 TH23 18 G R01 H05 ...

Page 35: ...ed in Apr 2009 No OCB461 PDF 7 Made in Japan New publication effective Nov 2011 Specifications arer subject to change without notice OPTIONAL PARTS 2 2 4 EXTERNAL HEATER ADAPTER 2 1 WIRELESS REMOTE CONTROLLER 2 2 WIRED REMOTE CONTROLLER MA REMOTE CONTROLLER 2 3 WIRED REMOTE CONTROLLER ME REMOTE CONTROLLER Part No PAC SA88HA E Part No PAR FL32MA Part No PAR 21MAA Part No PAR F27MEA ...

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