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Mitsubishi Electric PKFY-P50VGM-A Service manual
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Mitsubishi Electric PKFY-P50VGM-A is a versatile air conditioner featuring a powerful cooling and heating system, efficient dehumidification function, and a convenient wireless remote controller for precise temperature control and mode selection.
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS February 2009 No. OCH442 REVISED EDITION-A TECHNICAL & SERVICE MANUAL R410A Indoor unit [Model names] PKFY-P32VHM-E PKFY-P40VHM-E PKFY-P50VHM-E R407C [Service Ref.] PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1 R22 Revision: • PKFY-P32/40/50VHM-ER1 are added in REVISED EDITION-A. • Some descriptions have been modified. • Plase void OCH442. Note: • This manual describes only service data of the indoor units. • RoHS compliant products have <G> mark on the spec name plate. CONTENTS INDOOR UNIT 1. TECHNICAL CHANGES ......................... 2 2. SAFETY PRECAUTION.......................... 2 3. PART NAMES AND FUNCTIONS .......... 6 4. SPECIFICATION ..................................... 8 5. OUTLINES AND DIMENSIONS ............ 11 6. WIRING DIAGRAM ............................... 12 7. REFRIGERANT SYSTEM DIAGRAM........13 8. TROUBLESHOOTING .......................... 13 9. DISASSEMBLY PROCEDURE ............. 21 PARTS CATALOG (OCB442) 1 TECHNICAL CHANGES PKFY-P32VHM-E PKFY-P40VHM-E PKFY-P50VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-ER1 PKFY-P50VHM-ER1 1. INDOOR CONTROLLER BOARD (I.B.) has been changed. (S/W version up) 2. Fan speed has been changed. (4 speed → 3 speed) 3. Heat exchanger has been changed. PKFY-P32VHM-E PKFY-P40VHM-E PKFY-P50VHM-E Service parts of room temp. thermistor (TH21) has been changed. (T7W E05 202 → R01 N20 202) (The position to be attached has been changed. Band/PVC tube have been added.) 2 SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. Use liquid refrigerant to charge the system. The old refrigerant and lubricant in the existing piping contain a large amount of chlorine which may cause the lubricant deterioration of the new unit. If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop. Use “low residual oil piping” Do not use a refrigerant other than R407C. If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result. If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration. Store the piping to be used indoors during installation and both ends sealed until just before brazing. (Store elbows and other joints in a plastic bag.) If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result. Use a vacuum pump with a reverse flow check valve. The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. Use ESTR , ETHER or HAB as the lubricant to coat flares and flange connection parts. If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc. [1] Cautions for service · After recovering all the refrigerant in the unit, proceed to working. · Do not release refrigerant in the air. · After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. 2 [2] Refrigerant recharging (1) Refrigerant recharging process 1Direct charging from the cylinder. ·R407C cylinder available on the market has a syphon pipe. ·Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant) Unit Gravimeter (2) Recharge in refrigerant leakage case ·After recovering the all refrigerant in the unit, proceed to working. ·Do not release the refrigerant in the air. ·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. [3] Service tools Use the below service tools as exclusive tools for R407C refrigerant. No. Tool name Specifications Gauge manifold ·Only for R407C ·Use the existing fitting SPECIFICATIONS. (UNF7/16) ·Use high-tension side pressure of 3.43MPa·G or over. Charge hose ·Only for R407C ·Use pressure performance of 5.10MPa·G or over. Electronic scale Gas leak detector ·Use the detector for R134a or R407C. Adapter for reverse flow check ·Attach to vacuum pump. Refrigerant charge base Refrigerant cylinder Refrigerant recovery equipment — — ·For R407C ·Top of cylinder (Brown) ·Cylinder with syphon — 3 Cautions for units utilizing refrigerant R410A Do not use the existing refrigerant piping. Use a vacuum pump with a reverse flow check valve. The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit. Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc. Use “low residual oil piping” If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result. Use the following tools specifically designed for use with R410A refrigerant. The following tools are necessary to use R410A refrigerant. Gauge manifold Charge hose Gas leak detector Torque wrench Store the piping to be used indoors during installation and 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. Tools for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Electronic refrigerant charging scale Handle tools with care. If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor. Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections. Do not use a charging cylinder. If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc. If a charging cylinder is used, the composition of refrigerant 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. Do not use refrigerant other than R410A. If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc. 4 [1] Cautions for service (1) Perform service after recovering 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 syphon type. · Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.) Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. 1 Tool name Gauge manifold Specifications ·Only for R410A ·Use the existing fitting specifications. (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. 2 Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over. 3 Electronic scale 4 Gas leak detector ·Use the detector for R134a, R407C or R410A. 5 Adaptor for reverse flow check ·Attach to vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder ·Only for R410A ·Top of cylinder (Pink) ·Cylinder with syphon 8 Refrigerant recovery equipment 5 3 PART NAMES AND FUNCTIONS Filter Indoor unit Louver Air intake Vane Air outlet Wireless remote controller CHECK TEST RUN display CHECK and TEST RUN display indicate that the unit is being checked or test-run. MODEL SELECT display display Lights up while the signal is transmitted to the indoor unit when the button is pressed. display Blinks when model is selected. SET TEMP. display indicates the set desired temperature. CLOCK display display Displays the current time. OPERATION MODE display Operation mode display indicates which operation mode is in effect. TIMER display CHECK TEST RUN MODEL SELECT °C AMPM Displays when in timer operation or when setting timer. “ AMPM NOT AVAILABLE display The vertical direction of air flow is indicated. ON/OFF “ TEMP ”“ ” display Displays the order of timer operation. ”“ ” display Displays whether timer is on or off. display button FAN SPEED display indicates which fan speed has been selected. FAN AUTO STOP VANE AUTO START SET TEMPERATURE button sets any desired room temperature. ON/OFF button The unit is turned ON and OFF alternately each time the button is pressed. MODE TIMER CONTROL buttons CHECK LOUVER h FAN SPEED SELECT button Used to change the fan speed. MODE SELECT button TEST RUN SET min RESET AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time. CLOCK Used to switch the operation mode between cooling, drying, fan, heating and auto mode. h and min buttons Buttons used to set the “hour and minute” of the current time and timer settings. + In case the outdoor unit is cool only type, the heating and auto mode are not available. LOUVER button Changes left/right airflow direction. CHECK-TEST RUN button (Not available for this model.) Only press this button to perform an inspection check or test operation. Do not use it for normal operation. CLOCK button RESET button VANE CONTROL button SET button Used to change the air flow 6 Wired remote controller “Sensor” indication Display Section For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit. Displayed when the remote controller sensor is used. Day-of-Week Shows the current day of the week. Time/Timer Display “Locked” indicator Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown. Indicates that remote controller buttons have been locked. Identifies the current operation “Clean The Filter” indicator Shows the operating mode, etc. *Multilanguage display is available. To be displayed on when it is time to clean the filter. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER Indicates that operation from the remote controller has been prohibited by a master controller. FUNCTION FILTER °F°C °F°C “Centrally Controlled” indicator Timer indicators AFTER OFF ERROR CODE The indicator comes on if the corresponding timer is set. WEEKLY SIMPLE AUTO OFF ONLY1Hr. Fan Speed indicator Shows the selected fan speed. “Timer is Off” indicator Indicates that the timer is off. Up/Down Air Direction indicator The indicator shows the direction of the outcoming airflow. Room Temperature display Shows the room temperature. The room temperature display range is 8–39. The display blinks if the temperature is less than 8 or 39 or more. Ventilation indicator Appears when the unit is running in Ventilation mode. “One Hour Only” indicator Temperature Setting Shows the target temperature. Displayed if the airflow is set to Low or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in one hour, at which time the airflow direction also changes. 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. Operation Section ON/OFF button Temperature setting buttons Down Fan Speed button Up Timer Menu button (Monitor/Set button) Filter button (<Enter> button) Mode button (Return button) TEMP. ON/OFF Set Time buttons Check button (Clear button) Back Ahead Timer On/Off button (Set Day button) Test Run button MENU BACK PAR-21MAA MONITOR/SET ON/OFF FILTER DAY CLOCK CHECK TEST OPERATION Airflow Up/Down button CLEAR Louver button ( Operation button) To return operation number Opening the lid Built-in temperature sensor Ventilation button ( Operation button) To go to next operation number Note: ● “PLEASE WAIT” message This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure. ● “NOT AVAILABLE” message This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have). If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function. 7 4 SPECIFICATION 4-1. Specifications Service Ref. *1 *1 *1 *2 Power input Current input Heating capacity (Nominal ) *3 *3 *3 Power input Current input External finish External dimension H × W × D Net weight Heat exchanger Fan PKFY-P40VHM-E PKFY-P32VHM-E Power source Cooling capacity (Nominal) Type × Quantity External static press. Motor type Motor output Driving mechanism Airflow rate (Low-Mid2-Mid1-High) kW kcal/h Btu/h kcal/h kW A kW kcal/h Btu/h kW A 3.6 3,100 12,300 3,150 0.03 0.30 4.0 3,400 13,600 0.03 0.30 mm in. kg (lb) Pa mmH2O kW m3/min L/s cfm dB <A> Noise level (Low-Mid2-Mid1-High) (measured in anechoic room) Insulation material Air filter Protection device Refrigerant control device Connectable outdoor unit Liquid Diameter of (R410A) mm (in.) refrigerant pipe (R22, R407C) Gas (R410A) mm (in.) (R22, R407C) Field drain pipe size mm (in.) Document Standard Accessory attachment Optional parts Remarks 1-phase 220-240V 50Hz, 1-phase 220V 60Hz 4.5 3,900 15,400 4,000 0.03 0.30 5.0 4,300 17,100 0.03 0.30 Plastic, MUNSELL (1.0Y 9.2/0.2) 295 × 898 × 249 11-5/8" × 35-3/8" × 9-13/16" 13 (29) Cross fin (Aluminum fin and copper tube) Line flow fan × 1 0 0 DC motor 0.030 Direct-drive 8 - 9.5 - 10.5 - 11.5 133 - 158 - 175 - 192 283 - 335 - 371 - 406 Polyethylene sheet PP honeycomb Fuse LEV R410A, R407C, R22 CITY MULTI ø6.35 (ø1/4") Flare ø6.35 (ø1/4") Flare ø12.7 (ø1/2") Flare ø12.7 (ø1/2") Flare I.D. 16mm (5/8") Installation Manual, Instruction Book — Flare Flare Flare Flare — 5.6 4,800 19,100 5,000 0.03 0.30 6.3 5,400 21,500 0.03 0.30 9 - 10 - 11 - 12 150 - 167 - 183 - 200 318 - 353 - 388 - 424 34 - 37 - 40 - 43 33 - 36 - 38 - 41 ø6.35 (ø1/4") ø6.35 (ø1/4") ø12.7 (ø1/2") ø12.7 (ø1/2") PKFY-P50VHM-E ø6.35 (ø1/4") ø9.52 (ø3/8") ø12.7 (ø1/2") ø15.88 (ø5/8") Flare Flare Flare Flare Flare nut 3/8F, 5/8F — Details on foundation work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual. Unit converter Note : *1 Nominal cooling conditions *2 Nominal cooling conditions *3 Nominal heating conditions kcal/h = kW × 860 Indoor : 27°CDB/19°CWB (81°FDB/66°FWB) 27°CDB/19.5°CWB (81°FDB/67°FWB) 20°CDB (68°FDB) Btu/h = kW × 3,412 Outdoor : 35°CDB (95°FDB) 35°CDB (95°FDB) 7°CDB/6°CWB (45°FDB/43°FWB) cfm = m3/min × 35.31 Pipe length : 7.5 m (24-9/16 ft) 5 m (16-3/8 ft) 7.5 m (24-9/16 ft) lb = kg/0.4536 Level difference : 0 m (0 ft) 0 m (0 ft) 0 m (0 ft) Installation *Above specification data is subject to rounding variation. * Nominal conditions *1, *3 are subject to JIS B8615-1. * Due to continuing improvement, above specification may be subject to change without notice. 8 Service Ref. PKFY-P32VHM-ER1 Power source Cooling capacity (Nominal) *1 *1 *1 *2 Power input *4 Current input *4 Heating capacity (Nominal ) *3 *3 *3 Power input Current input External finish External dimension H × W × D Net weight Heat exchanger Fan Type × Quantity External static press. Motor type Motor output Driving mechanism Airflow rate (Low-Mid-High) kW kcal/h Btu/h kcal/h kW A kW kcal/h Btu/h kW A 9 - 10.5 - 12 150 - 175 - 200 318 - 371 - 424 34 - 37 - 41 34 - 38 - 41 34 - 39 - 43 Pa mmH2O kW Noise level (Low-Mid-High) (measured in anechoic room) Insulation material Air filter Protection device Refrigerant control device Connectable outdoor unit Liquid Diameter of (R410A) mm (in.) refrigerant pipe (R22, R407C) Gas (R410A) mm (in.) (R22, R407C) Field drain pipe size mm (in.) Document Standard Accessory attachment Optional parts Remarks PKFY-P50VHM-ER1 9 - 10 - 11 150 - 167 - 183 318 - 353 - 388 3.6 3,100 12,300 3,150 0.04 0.40 4.0 3,400 13,600 0.03 0.30 mm in. kg (lb) m3/min L/s cfm dB <A> PKFY-P40VHM-ER1 1-phase 220-240V 50Hz, 1-phase 220V 60Hz 4.5 3,900 15,400 4,000 0.04 0.40 5.0 4,300 17,100 0.03 0.30 Plastic, MUNSELL (1.0Y 9.2/0.2) 295 × 898 × 249 11-5/8" × 35-3/8" × 9-13/16" 13 (29) Cross fin (Aluminum fin and copper tube) Line flow fan × 1 0 0 DC motor 0.030 Direct-drive 9 - 10.5 - 11.5 150 - 175 - 192 318 - 371 - 406 ø6.35 (ø1/4") ø6.35 (ø1/4") ø12.7 (ø1/2") ø12.7 (ø1/2") Flare Flare Flare Flare Polyethylene sheet PP honeycomb Fuse LEV R410A, R407C, R22 CITY MULTI ø6.35 (ø1/4") Flare ø6.35 (ø1/4") Flare ø12.7 (ø1/2") Flare ø12.7 (ø1/2") Flare I.D. 16mm (5/8") Installation Manual, Instruction Book — Drain pump kit 5.6 4,800 19,100 5,000 0.04 0.40 6.3 5,400 21,500 0.03 0.30 ø6.35 (ø1/4") ø9.52 (ø3/8") ø12.7 (ø1/2") ø15.88 (ø5/8") Flare Flare *5 Flare Flare *5 PAC-SH75DM-E Details on foundation work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual. Note : *1 Nominal cooling conditions *2 Nominal cooling conditions *3 Nominal heating conditions Unit converter Indoor : 27°CDB/19°CWB (81°FDB/66°FWB) 27°CDB/19.5°CWB (81°FDB/67°FWB) 20°CDB (68°FDB) kcal/h = kW × 860 Outdoor : 35°CDB (95°FDB) 35°CDB (95°FDB) 7°CDB/6°CWB (45°FDB/43°FWB) Btu/h = kW × 3,412 Pipe length : 7.5 m (24-9/16 ft) 5 m (16-3/8 ft) 7.5 m (24-9/16 ft) cfm = m3/min × 35.31 Level difference : 0 m (0 ft) 0 m (0 ft) 0 m (0 ft) lb = kg/0.4536 *5 Connect the joint (purchased locally) *Above specification data is *4 Electrical characteristics of cooling are included optional drain-pump. for R407C/R22. subject to rounding variation. * Nominal conditions *1, *3 are subject to JIS B8615-1. Installation * Due to continuing improvement, above specification may be subject to change without notice. 9 4-2. Electrical parts specifications Service Ref. PKFY-P32VHM-E PKFY-P32VHM-ER1 Symbol Parts name PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1 Room temperature thermistor TH21 Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k Liquid pipe thermistor TH22 Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k Gas pipe thermistor TH23 TH24 Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k Fuse (Indoor controller board) FUSE 250V 3.15A Fan motor MF 8-Pole Output 30W / RCOJ30-CK Vane motor (with limit switch) MV MSFBC20 DC12V Linear expansion valve LEV DC12V Stepping motor drive Port :3.2 (0~2000pulse) Power supply terminal block TB2 (L, N, ) 250V 20A Transmission terminal block TB5 (M1, M2, S) 250V 20A MA remote controller terminal block TB15 (1, 2) 250V 10A 4-3. Sound levels Sound level at anechoic room : Low-(Middle2-Middle1)-High Sound level dB (A) Service Ref. PKFY-P32VHM-E PKFY-P40VHM-E PKFY-P50VHM-E 33-36-38-41 34-37-40-43 Sound level at anechoic room : Low-Middle-High Sound level dB (A) 34-37-41 34-38-41 34-39-43 1.0m Service Ref. PKFY-P32VHM-ER1 PKFY-P40VHM-ER1 PKFY-P50VHM-ER1 1.0m Measurement location * Measured in anechoic room. 4-4. NC curves High speed Low speed 65.0 60.0 NC60 55.0 50.0 NC50 45.0 40.0 NC40 35.0 30.0 NC30 25.0 20.0 Approximate minimum audible limit on continuous noise NC20 15.0 10.0 63 125 250 500 1k 2k 4k OCTAVE BAND CENTER FREQUENCIES(Hz) 8k 70.0 High speed Low speed 65.0 60.0 NC60 55.0 50.0 NC50 45.0 40.0 NC40 35.0 30.0 NC30 25.0 20.0 Approximate minimum audible limit on continuous noise NC20 15.0 10.0 63 125 250 500 1k 2k 4k OCTAVE BAND CENTER FREQUENCIES(Hz) 10 8k PKFY-P50VHM-E PKFY-P50VHM-ER1 External static pressure : 0Pa Power source : 220,230,240V, 50Hz / 220V, 60Hz OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20MPa 70.0 PKFY-P32, 40VHM-ER1 External static pressure : 0Pa Power source : 220,230,240V, 50Hz / 220V, 60Hz OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20MPa OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20MPa PKFY-P32, 40VHM-E External static pressure : 0Pa Power source : 220,230,240V, 50Hz / 220V, 60Hz 70.0 High speed Low speed 65.0 60.0 NC60 55.0 50.0 NC50 45.0 40.0 NC40 35.0 30.0 NC30 25.0 20.0 Approximate minimum audible limit on continuous noise NC20 15.0 10.0 63 125 250 500 1k 2k 4k OCTAVE BAND CENTER FREQUENCIES(Hz) 8k 0 16 28.5 41 78.5 91 103.5 116 166 178.5 203.5 232.5 253.5 77-:5.1 Tapping screw hole A 43 56 394 12.5 449 C Knockout hole for piping 291.5 265 278.3 56 4-:9 Bolt hole 69 125 Min.7 250mm or greater with optional drain pump installation. 372.3 356.3 327.5 43 46 56 238 213 46 60 43 B D Mount board Knockout hole for left piping Left side :65~:80 231.5 Knockout hole for lower piping 273.2 C 688 898 192 612 B Mount board Terminal block for MA-remote controller Terminal block for transmission Emergency operation switch (cooling/heating) Receiver 5 A Terminal block for power supply Knockout hole for right piping 249 Right side Drain hose :16 O.D. Size P32 P40 P50VHM-ER1 P50VHM-E Refrigerant pipe : :6.35 :6.35 / :9.52 Liquid pipe Flared connection : 1/4F 1/4F / 3/8F Refrigerant pipe : :12.7 :12.7 / :15.88 Gas pipe Flared connection : 1/2F 1/2F / 5/8F DEFROST/STAND BY lamp 169 158 184 155 Front side Top side Operation lamp Knockout hole for lower piping Under side 457 Gas pipe 539 Liquid pipe 610 Drain hose Front side (Grille open) 599 Louver (manual) Vane (auto) 387 PKFY-P32, 40, 50VHM-E PKFY-P32, 40, 50VHM-ER1 128.5 153.5 21.8 0 20 32.7 53.5 66 Indoor unit outline :65~:80 55 55mm or greater with left or rear left pipng or drain pump installation. Sleeve Through hole (purchased locally) Min.150 Center measurement hole :2.5 0 15 0 15 6 225 200 174 58 3.8 70 0 59 Min.50 550mm or greater with optional Min.220 drain pump installation. 281 6 70 43 125 115 140 167 180.3 193.5 Min.50 Min.250 Required space (Indoor unit) 200 225 238 265 291.5 327.5 356.3 372.3 11 449 197 295 8 5 OUTLINES AND DIMENSIONS Unit : mm 6 WIRING DIAGRAM PKFY-P32, 40, 50VHM-E PKFY-P32, 40, 50VHM-ER1 SYMBOL I.B CN32 CN51 CN52 BZ DSA FUSE LED1 LED2 SW2 SW3 SW4 SWE X1 MOV 01.02 LEV MF MV TB2 TB5 TB15 NAME NAME SYMBOL INDOOR CONTROLLER BOARD THERMISTOR ROOM TEMP. DETECTION TH21 (0°C/15kΩ, 25°C/5.4kΩ) CONNECTOR REMOTE SWITCH CENTRALLY CONTROL PIPE TEMP. DETECTION / LIQUID TH22 (0°C/15kΩ, 25°C/5.4kΩ) REMOTE INDICATION BUZZER PIPE TEMP. DETECTION / GAS1 TH23 (0°C/15kΩ, 25°C/5.4kΩ) SURGE ABSORBER FUSE (T3.15AL 250V) TH24 PIPE TEMP. DETECTION / GAS2 (0°C/15kΩ, 25°C/5.4kΩ) POWER SUPPLY (I.B) POWER SUPPLY (I.B) ADDRESS BOARD A.B SWITCH CAPACITY CODE SWA SWITCH FAN SPEED SELECTOR MODE SELECTION SW1 MODE SELECTION MODEL SELECTOR SW11 ADDRESS SETTING 1s DIGIT DRAIN PUMP (TEST MODE) SW12 ADDRESS SETTING 10ths DIGIT AUX.RELAY DRAIN PUMP (OPTION) SW14 BRANCH No. VARISTOR S.B SWITCH BOARD SWE1 EMERGENCY OPERATION(HEAT) LINEAR EXPANSION VALVE FAN MOTOR SWE2 EMERGENCY OPERATION(COOL) VANE MOTOR W.B PCB FOR WIRELESS REMOTE CONTROLLER TERMINAL POWER SUPPLY LED1 LED(OPERATION INDICATOR: GREEN) TRANSMISSION LED2 LED(OPERARTION FOR HEATING : ORANGE ) BLOCK MA-REMOTE CONTROLLER RU RECEIVING UNIT DRAIN PUMP (OPTION) DP DRAIN FLOAT SWITCH (OPTION) FS TB2 RED L BLU N GRN/YLW MV LEV M 1~ M M FUSE CNP 3 (BLU) MOV2 MOV1 DSA X1 3 5 VANE 1 CN151 (WHT) U LED1 U 1 LDSWE(A) (BLU) 5 1 BRN RED BLU ORN YLW WHT 5 6 CNRU (WHT) 6 1 LEV CN60 (YLW) BZ SWE FLOAT SW CN4F (WHT) 4 OFF ON When attaching drain pump(option), remove the jumper connector CN4F and fit the drain float switch (FS). TH24 FS FLOAT SW CN4F (WHT) 4 TH22 t ○ t ON OFF TB15 1 9 0 1 9 10ths DIGIT ADDRESS CN82 (RED) SW14 0 1 E 1s DIGIT F0 1 2 3456 TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V 2 3 2 M1 M2 S (SHIELD) TB5 3 2 1 1 2 3 4 5 6 7 8 9 10 SWA SW12 SW11 2 3 TO MA-REMOTE CONTROLLER DC8.7-13V ADDRESS CN43 (RED) SW1 BCD 3 7 8 See fig.1 8 7 8 1 ORN 12345678 ORN BLU BLU 1234 MA-REMOCON CN3A (BLU) 5 6 SW3 BRANCH No. A.B LED on indoor board for service Mark Meaning LED1 Main power supply LED2 Power supply for MA-Remote controller Function Main power supply (Indoor unit: 220-240V) Power on → Iamp is lit Power supply for MA-Remote controller on → Iamp is lit NOTES: 1. At servicing for outdoor unit,always follow the wiring diagram of outdoor unit. 2. In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.) 3. In case of using M-NET, please connect to TB5. (Transmission line is non-polar.) 4. Symbol [S] of TB5 is the shield wire connection. 5. Symbols used in wiring diagram above are, : terminal block, :connecter. 6. The setting of the SW2 dip switches differs in the capacity. For the detail, refer to the fig. 1. 12 SW2 P32 ON OFF P40 ON OFF P50 ON OFF TH21 4 SW4 PKFY-P·VHM-ER1 Models ○ 4 M-NET SW2 CN2M(BLU) ON OFF 1 2 123456 1 Models SW2 P32 ON P40 OFF 123456 P50 ○ t When attaching drain pump (option) <fig.1> PKFY-P·VHM-E t ○ LIQUID/GAS1 CN44 3 1 (WHT) ADDRESS 4 1 CN42 1 4 (RED) 1 INTAKE CN20 (RED) 2 1 LED2 ADDRESS CN81 (RED) S.B TH23 CN32 (WHT) 8 SWE1 SWE2 LED1 1 GAS2 CN2G (BLK) 2 1 DC311~339V RECTIFICATION W.B CN52 (GRN) 5 CN51 1 (WHT) CN24 (YLW) 2 1 1 LD101(B) RU I.B CND (BLK) GRN YLW ORN RED BRN BLK WHT YLW BLU 1 6 1 LD SWE(B) LED2 5 6 3 FAN CNMF (WHT) 6 DP 4 1 3 TO NEXT INDDOR UNIT 789A RED MS 3~ POWER SUPPLY ~/N220-240V 50Hz 220V 60Hz RED BLU BLK MF FUSE BREAKER PULL (16A) (16A) BOX 123456 123456 123456 7 REFRIGERANT SYSTEM DIAGRAM PKFY-P32, 40, 50VHM-E PKFY-P32, 40, 50VHM-ER1 Gas pipe thermistor TH23 Strainer (#50mesh) Gas pipe Gas pipe thermistor TH24 Flare connection Liquid pipe thermistor TH22 Heat exchanger Liquid pipe Linear expansion valve Strainer1 (#50mesh) Strainer2 (#100mesh) Strainer (#100mesh) Room temparature thermistor TH21 Unit : mm (inch) Item 8 Service Ref. PKFY-P32VHM-E(R1) PKFY-P40VHM-E(R1) PKFY-P50VHM-ER1 PKFY-P50VHM-E Gas pipe :12.7(1/2) :12.7(1/2) :12.7(1/2)/:15.88(5/8) Liquid pipe :6.35(1/4) :6.35(1/4) :6.35(1/4)/:9.52(3/8) TROUBLESHOOTING 8-1. HOW TO CHECK THE PARTS PKFY-P32, 40, 50VHM-E PKFY-P32, 40, 50VHM-ER1 Parts name Check points Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe temperature thermistor (TH23 ,24) Vane motor (MV) Red Abnormal Open or short Normal Abnormal Open or short Orange Green Yellow Orange Blue Red Brown 350 ± 7% Refer to 8-1-3. Linear expansion valve (LEV) CN60 White Refer to the next page for the details. - - - - Brown-Red Brown-Orange Brown-Yellow Brown-Green M Fan motor (MF) LEV Normal 4.3k~9.6k Measure the resistance between the terminals using a tester. (Coil temperature 25) Yellow Brown Connect pin No. Disconnect the connector then measure the resistance using a tester. (At the ambient temperature 10~30) 1 2 3 4 5 6 Disconnect the connector then measure the resistance value using a tester. (Coil temperature 20) Normal Abnormal (1)-(5) (2)-(6) (3)-(5) (4)-(6) White-Red Yellow-Brown Orange-Red Blue-Brown Open or short 200 ± 10% 13 8-1-1. Thermistor <Thermistor Characteristic graph> Thermistor for lower temperature < Thermistor for lower temperature > 0: 10: 20: 25: 30: 40: 1 273+t 40 Resistance (K) Thermistor R0=15k" ± 3% Fixed number of B=3480 ± 2% Rt=15exp { 3480( 50 Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe temperature thermistor (TH23) (TH24) 1 )} 273 30 20 15k" 9.6k" 6.3k" 5.4k" 4.3k" 3.0k" 10 0 -20 -10 0 10 20 30 Temperature () 40 50 8-1-2. Liner expansion valve 1 Operation summary of the linear expansion valve • Linear expansion valve opens/closes 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 signal. <Connection between the indoor controller board and the linear expansion valve> Controller board DC12V Linear expansion valve 4 M 6 5 2 1 White Red 3 Orange Blue Brown 6 Red 5 Drive circuit Brown :4 Blue 4 :4 Yellow :3 Orange 3 :3 :2 Yellow 2 :2 :1 White 1 :1 Connector(CN60) 14 <Output pulse signal and the valve operation> Output Output (Phase) 1 2 3 4 {1 ON OFF OFF ON {2 ON ON OFF OFF {3 OFF ON ON OFF {4 OFF OFF ON ON Open C Valve position (capacity) D Close A E Close • When linear expansion valve operation stops, all output phase become OFF. • At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrate. • When the switch is turned on, 2200 pulse closing valve signal will be sent till it goes to point A in order to define the valve position. 2 Linear expansion valve operation Open Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. • When the valve moves smoothly, there is no noise or vibration occurring from the linear expansion valves; however, when the pulse number moves from E to A or when the valve is locked, more noise can be heard than in a normal situation. • Noise can be detected by placing the ear against the screw driver handle while putting the screw driver tip to the linear expansion valve. Outdoor unit R410A model : 1400 pulse Outdoor unit R22/R407C model : 2000 pulse Opening a valve all the way Pulse number B Extra tightening (200~800 pulse) 3 Trouble shooting Symptom Check points Countermeasures Operation circuit failure of the micro processor Disconnect the connector on the controller board, then con- Exchange the indoor connect LED for checking. troller board in case of 6 5 drive circuit failure. 4 3 2 1 1k LED When power is turned on, pulse signals will be output for 10 seconds. There must be some defects in the operation circuit if the LED does not light while the signals are output or keeps lighting even after the signals stop. Linear expansion valve mechanism is locked. Motor will idle and make a ticking noise when the motor is Exchange the linear expanoperated while the linear expansion valve is locked. This tick- sion valve. ing sound is the sign of the abnormality. Short or breakage Measure the resistance between each coil (white-red, yellow- Exchange the linear expanof the motor coil of brown, orange-red, blue-brown) using a tester. It is normal if sion valve. the linear expansion the resistance is in the range of 200 ±10%. valve Valve does not close To check the linear expansion valve, operate the indoor unit If large amount of refrigercompletely. in fan mode and at the same time operate other indoor units ant is leaked, exchange the linear expansion valve. in cooling mode, then check the pipe temperature <liquid pipe temperature> of the indoor unit by the outdoor multi controller board operation monitor. During fan operation, linear expansion valve is closed completely and if there Thermistor (Liquid pipe) is any leaking, detecting temperature of the thermistor will go lower. If the detected Linear temperature is much lower than the temexpansion valve perature indicated in the remote controller, it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not affecting normal operation. Wrong connection of the connector or contact failure Check the color of lead wire and missing terminal of the con- Disconnect the connector nector. at the controller board, then check the continuity. 15 8-1-3. DC Fan motor (fan motor/indoor controller circuit board) Check method of DC fan motor (fan motor/indoor controller circuit board) Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit board and fan motor.) Self check Symptom : The indoor fan cannot turn around. Wiring contact check Contact of fan motor connector (CNMF) Is there contact failure? Wiring recovery Yes No Power supply check (Remove the connector (CNMF)) Measure the voltage in the indoor controller circuit board. TEST POINT : VDC (between 1 (+) and 3 (-) of the fan connector): VDC DC310~340V TEST POINT : VCC (between 4 (+) and 3 (-) of the fan connector): VCC DC15V Is the voltage normal? Indoor controller board fuse check No No Is the fuse normal? Replace the fuse Yes OK Check the operation Yes Sensor signal check Measure the voltage between CNMF and DC 0V and DC 15V in the indoor controller circuit board. No Does the voltage repeat DC 0V and DC 15V? NG Replace indoor controller board. OK Check the operation END NG Replace the fan motor Yes Replace indoor controller board Replace the fan motor OK OK Check the operation END Check the operation NG NG Replace the fan motor. Replace indoor controller board. 16 END END 8-2. Function of Dip switch PKFY-P32, 40, 50VHM-E PKFY-P32, 40, 50VHM-ER1 Switch Pole Operation by switch Function ON OFF 1 Thermistor<Room temperature> position Built-in remote controller Indoor unit 2 Filter clogging detection Provide Not provide 3 Filter cleaning sign 4 Fresh air intake SW1 5 Mode selection 6 7 2,500 hr 100 hr Not effective Not effective 1 2 3 4 5 6 7 8 9 10 +2 Switching remote controller display Thermo ON signal indication Fan output indication Fan operation at Heating mode Thermo ON operation at heating mode Humidifier control 8 9 Auto restart function Effective Not effective Power ON/OFF by breaker Effective Not effective Models Models SW2 P32 ON P40 OFF 123456 P50 SW2 Capacity 1~6 code switch Under suspension P32 +2 It is impossible to intake the fresh air. Indoor controller board SW2 ON OFF P40 ON OFF P50 ON OFF Before power supply ON 123456 123456 123456 Heat pump/Cool only 2 Not used — — 3 Not used — — Cooling only Heat pump Vane horizontal angle Second setting +1 First setting Changing the opening of linear expansion valve during thermo OFF Effective Not effective Heating 4 degree up Not effective Effective 7 Target superheat setting +2 — — 8 Target subcool — — In case of replacing the indoor controller board, make sure to set the switch to the initial setting, which is shown below. ON OFF 1 2 3 4 17 SW1-7 SW1-8 Fan speed OFF OFF Extra low ON OFF Low OFF ON Setting air flow ON ON Stop Depends on SW1-7 1 +2 NOTE: +1 PKFY-P·VHM-ER1 PKFY-P·VHM-E SW4 Model 1~4 selection <Initial setting> ON OFF Extra low +1 SW3 4 Function selection 5 6 Remarks Address board Air flow set in case of heat Low +1 thermo OFF Setting air flow +1 10 Effective timing Indoor controller board <Initial setting> Under suspension ON OFF 1 2 3 4 5 6 7 8 +1 Second setting is same as first setting. +2 Please do not use SW3-7,8 as trouble might be caused by the usage condition. Indoor controller board Before power supply ON 1 CDE AB 789 Address board <Initial setting> SW14 CDE AB F01 789 Rotary switch Before power supply ON 23 Jumper 90 1 • To operate each indoor unit by each remote controller when installed 2 indoor units or more are near, Pair No. setting is necessary. . Pair No. setting is available with the 4 patterns (Setting patterns A to D). Make setting for J41, J42 of indoor controller board and the Pair No. of wireless remote controller. • You may not set it when operating it by one remote controller. Setting for indoor unit Cut jumper wire J41, J42 on the indoor controller board according to the table below. Wireless remote controller pair number: Setting operation Under 1. Press the SET button (using a pointed implement). Check that the operation remote controller's display has stopped before continuing. or MODEL SELECT flashes, and the model No. (3 digits) appears (steadily-lit). 2. Press the MINUTE button twice. The pair number appears flashing. suspension 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 (steadily-lit) for 3 seconds, then disappears. Setting pattern Indoor controller jumper wire Pair No. of wireless remote controller J41 J42 0 — — A Initial setting 1 — — Cut B 2 — Cut — C 3 — Cut Cut D Pair No.4-9 of wireless remote controller is setting pattern D. 18 45 6 Wireless remote controller Pair No. How to set branch numbers SW14 (Series R2 only) Match the indoor unit’s refrigerant pipe with the BC controller’s end connection number. Remain other than series R2 at "0". SW11 90 1 23 J41, J42 45 6 SW14 Branch No. Setting 23 F01 SW12 23 SW14 <Initial setting> 78 45 6 45 6 10 Address board How to set addresses Example : If address is "3", remain SW12 (for over 10) at "0", and match SW11 (for 1 to 9) with "3". 78 78 78 23 Rotary Switch 90 1 45 6 SW11 90 1 Remarks 45 6 SW12 23 SW11 1s digit address setting SW12 10ths digit address setting Effective timing Operation by switch Switch <Initial setting> Pattern A Pair No. MODEL SELECT FAN AUTO STOP VANE AUTO START CHECK LOUVER SET h min TEST RUN SET button Temperature button TEMP ON/OFF MODE Model No. RESET CLOCK Minute button 8-3. TEST POINT DIAGRAM 8-3-1. Indoor controller board PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1 CNMF Connect to the fan motor (MF) 1-3 : DC310~340V 4-3 : DC15V 5-3 : DC0~6V 6-3 : DC0 or DC15V (Stop) DC7.5V (Operation) (12VDC pluse) FUSE 3.15A 250V CNP Drain pump output (DP) 1-3 : 220-240AC CND Power supply for indoor controller board 1-3 : 220-240AC LED1 Main power supply (Indoor unit : 220-240V) CN2M Connect to the terminal block (TB5) (M-NET transmission connecting wire) 24-30VDC (non-polar) Power supply from outdoor unit CN151 Vane motor output 12VDC pluse CNRU Connect to the wireless remote controller board (W.B) SW2 Capacity setting LDSWE(A) Connect to the wireless remote controller board (S.B) SW4 Model selection SW3 Function setting CN52 Remote indicator Jumper wire J41, J42 Pair No. setting for wireless remote controller LED2 Power supply for MA-Remote controller CN3A Connected to the termial block (TB15) (MA-Remote controller connecting wire) 1 - 3 : 8.7-13V DC (Pin1 (+)) CN32 Remote switch CN2G Pipe temperature thermistor Gas2 (TH24) CN20 Room temperature thermistor (TH21) CN44 Pipe temperature thermistor 1-2 : Liquid (TH22) 3-4 : Gas1 (TH23) 19 CN60 Liner expansion valve (LEV) output 12VDC pluse output CN4F Drain float switch (FS) CN51 Centrally controlled LD SWE (B) Connect to the indoor controller board (I.B) 8-3-2. Wireless remote controller board PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1 LD101 Connect to the indoor controller board (I.B) 8-3-3. Address board PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1 SW1 Function setting 1 2 3 4 5 6 7 8 9 10 BCD 78 4 56 78 789A 4 56 SW12 SW11 Address setting 10ths DIGIT Address setting 1s DIGIT 3456 EF0 12 90 1 23 23 90 1 SW14 Branch No. 20 8 DISASSEMBLY PROCEDURE PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1 Be careful when removing heavy parts. OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE Figure 1 (1) Remove the front panel. (2) Insert the screw driver to the corner hole at both left and right side as shown in the figure 1. (3) Push it up, then pull down the lower side of indoor unit and remove the hook. Push Corner hole Be careful not to damage the airflow adjustment plate with the screw driver. Push Down 2. REMOVING THE FRONT PANEL Photo 1 (1) Press and unlock the knobs on both sides of the front panel and lift the front panel until it is level. Pull the hinges forward to remove the front panel. (See Photo 2) (2) Move the horizontal vanes in a downward direction. (3) Remove the screw caps of the panel. Remove the screws. (See Photo 1) (4) Hold the lower part of both ends of the panel and pull it slightly toward you, and then remove the panel by pushing it upward. Vane Front panel Screw caps Photo 2 21 OPERATION PROCEDURE PHOTOS 3. REMOVING THE INDOOR CONTROLLER BOARD AND WIRELESS CONTROLLER BOARD Photo 3 Screw (top cover) (1) Remove the front panel. (Refer to 2.) (2) Remove the room themp. thermistor TH21. (see Photo 3) (3) Remove the electrical box covers (screw 4 × 12). (See Photo 3) (4) Disconnect the connectors on the indoor controller board. (5) Remove the switch board cover. (6) Pull out the indoor controller board toward you, then disconnect the rest of connectors. Remove the indoor controller board and switch board. (7) Remove the holder of wireless controller board. (8) Disconnect the connector of wireless controller board and remove the wireless controller board from the holder. Electrical box cover (top) Electrical box Screw (side cover) cover (side) Room temp. thermistor (TH21) Screw (side cover) Nozzle assembly Switch board cover Holder of wireless controller board Photo 4 Indoor controller board (I.B) Terminal block (TB2) Terminal block (TB5) Terminal block (TB15) Fixture (right) Room temp. thermistor (TH21) Photo 5 4. REMOVING THE ELECTRICAL BOX (1) Remove the front panel. (Refer to 2.) (2) Remove the electrical box covers. (See Photo 3) (3) Remove the nozzle assembly. (Refer to 5.) (4) Disconnect the transmission wiring of TB5. (5) Disconnect the power supply wiring of TB2. (6) Disconnect the wiring of MA-remote controller (TB15). (7) Disconnect the connectors on the indoor controller board. (8) Disconnect the connector for the ground wire. (See Photo 5) (9) Pull the disconnected lead wire out from the electrical box. (10) Remove the screw of electrical box. (See Photo 6) (11) Push up the upper fixture (See Photo 5) catch to remove the box, then pull the right fixture (See Photo 4) and remove it from the box fixture. Fixture (right) Fixture (upper) Connector for ground wire Photo 6 Screw (Electrical box) 22 OPERATION PROCEDURE PHOTOS 5. REMOVING THE NOZZLE ASSEMBLY (with VANE and VANE MOTOR) AND DRAIN HOSE Electrical box cover (side) Electrical box cover (top) Screw (side cover) Screw (top cover) Photo 7 (1) Remove the front panel (Refer to 2.). (2) Remove the electrical box cover. (3) Disconnect the vane motor connector (CN151) on the indoor controller board. (4) Remove the corner box. (5) Pull the nozzle assembly and detach. (6) Push the fixture and remove the drain hose. Switch board cover Holder of wireless Nozzle assembly controller board 6. REMOVING THE INDOOR FAN MOTOR AND THE LINE FLOW FAN (1) Remove the front panel (Refer to 2.) and the corner box at right lower side. (2) Remove the electrical box (Refer to 4.) and the nozzle assembly (Refer to 5.). (3) Remove the screws fixing the motor bed. (See Photo 8) (4) Loosen the screw fixing the line flow fan. (See Photo 9) (5) Remove the motor bed together with fan motor and motor band. (6) Release the hooks of the motor band. Remove the motor band. Pull out the indoor fan motor. (7) Remove the screws fixing the left side of the heat exchanger. (See Photo 10) (8) Lift the heat exchanger, and pull out the line flow fan to the lower-left. Photo 10 Motor band Photo 8 Fan motor Heat exchanger Screw of the motor bed Photo 9 Screw of the left side of the heat exchanger 7. REMOVING THE VANE MOTOR Screw (side cover) Screw of the line flow fan Photo 11 Screws of the vane motor unit (1) Remove the nozzle assembly. (Refer to 5.) (2) Remove the screws of the vane motor unit, and pull out the vane motor unit. (3) Remove the screws of the vane motor unit cover. (4) Remove the vane motor from the vane motor unit. (5) Disconnect the connector from the vane motor. Screws of the vane motor unit cover 8. REMOVING THE LIQUID PIPE THERMISTOR AND GAS PIPE THERMISTOR (1) (2) (3) (4) (5) (6) Photo 12 Gas pipe thermistor (TH23) Gas pipe thermistor (TH24) Remove the front panel. (Refer to 2) Remove the electrical box cover. Remove the motor band. Cut the wiring fixed band. Remove the liquid pipe thermistor and gas pipe thermistors. Disconnect the connector (CN44) (CN2G) on the indoor controller board. (TH22 and TH23/CN44, TH24/CN2G) Liquid pipe thermistor (TH22) 23 OPERATION PROCEDURE 9. REMOVING THE HEAT EXCHANGER AND LEV (1) Remove the front panel (Refer to 2.) and the corner panel at right lower side. (2) Remove the electrical box (Refer to 4.) and the nozzle assembly (Refer to 5.). (3) Remove the motor band. (4) Remove the pipe thermistors (Refer to 8.). (5) Disconnect the connector (CN60) on the indoor controller board and the connector for ground wire. (See Photo 5) (6) Remove the screws fixing the left side of the heat exchanger. (See Photo 9) (7) Remove the heat exchanger with LEV. PHOTOS Photo 13 Electrical box cover (side) Electrical box cover (top) Screw (side cover) Screw (top cover) Water cover Screw (side cover) Switch board cover Holder of wireless Nozzle assembly controller board Photo 14 Ground wire LEV Heat exchanger 10. REMOVING THE ROOM TEMPERATURE THERMISTOR (1) (2) (3) (4) Remove the front panel (Refer to 2.). Remove the electrical box cover. Remove the room temperature thermistor. Disconnect the connector (CN20) on the indoor controller board. NOTE: When room temp. thermistor is replaced, be sure to use service parts No. R01 N20 202. Photo 16 Photo 15 Indoor controller board (I.B) Terminal block (TB2) Terminal block (TB5) Terminal block (TB15) Room temp. thermistor (TH21) Wire clip Caution: There is a case that room temp. thermistor (TH21) is fixed with electrical box side cover screw. Fixture (right) Room temp. thermistor (TH21) Fixture (right) HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Feb. 2009 No. OCH442 REVISED EDITION-A PDF 7 Distributed in Jul. 2008 No. OCH442 PDF 7 Made in Japan New publication, effective Feb. 2009 Specifications subject to change without notice
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Frequently Answers and Questions
What are the precautions related to new refrigerant R407C?
Do not use the existing refrigerant piping, use liquid refrigerant to charge the system, use 'low residual oil piping', do not use a refrigerant other than R407C.
What is the filter made of?
The filter is a photocatalytic filter.
What are the available colors?
Model PKFY-P50VGM-A is available in the color White.
What is the set temperature range?
The set temperature range is 16 to 30 degree Celsius.
What is the power consumption of the outdoor unit?
The power consumption of the outdoor unit is 1.6 kW.
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