SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS December 2012 TECHNICAL & SERVICE MANUAL No. OCH418 REVISED EDITION-C R410A Indoor unit [Model names] PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E [Service Ref.] PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3 Revision: • PKFY-P15/20/25VBM-ER3 have been added in REVISED EDITION-C. • Some descriptions have been modified.
1 TECHNICAL CHANGES PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3 PKFY-P15VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 INDOOR CONTROLLER BOARD (I.B.) has been changed. (S/W version up) HEAT EXCHANGER and WATER CUT have been changed. INDOOR CONTROLLER BOARD (I.B.) has been changed.
2 SAFETY PRECAUTION Cautions for units utilizing refrigerant R410A Do not use the existing refrigerant piping. 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. Use a vacuum pump with a reverse flow check valve. Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc. Use the following tools specifically designed for use with R410A refrigerant.
[1] Cautions for service (1) Perform service after collecting the refrigerant left in the 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.
3 PART NAMES AND FUNCTIONS 3-1.
3-2. WIRED REMOTE CONTROLLER Wired remote controller function * The functions which can be used are restricted according to the model.
The main display can be displayed in two different modes: "Full" and "Basic". The factory setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting. * All icons are displayed for explanation. Fri Fri Cool Room Cool Set temp. Mode Temp. Set temp. Auto Auto Mode Fan Temp. Fan Operation mode Indoor unit operation mode appears here. Appears when the buttons are locked. Preset temperature Preset temperature appears here.
Menu structure Main menu Press the MENU button. Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button. Vane · Louver · Vent. (Lossnay) High power Timer On / Off timer Auto-Off timer Filter information Error information Weekly timer Energy saving Auto return Schedule Night setback Restriction Temp.
Main menu list Setting and display items Setting details Vane · Louver · Vent. (Lossnay) Use to set the vane angle. • Select a desired vane setting from f ve different settings. Use to turn ON / OFF the louver. • Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation. • Select a desired setting from "Off," "Low," and "High." High power Use to reach the comfortable room temperature quickly. • Units can be operated in the High-power mode for up to 30 minutes.
Setting and display items Initial setting Display details Auto mode Setting details Make the settings for the remote controller related items as necessary. Clock: The factory settings are "Yes" and "24h" format. Temperature: Set either Celsius (°C) or Fahrenheit (°F). Room temp. : Set Show or Hide. Auto mode: Set the Auto mode display or Only Auto display. Whether or not to use the AUTO mode can be selected by using the button.
3-3. WIRED REMOTE CONTROLLER “Sensor” indication Display Section For purposes of this explanation, all parts of the display are shown. During actual operation, only the relevant items will be lit. Identifies the current operation Displays 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.
3-4. 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 Blinks when model is selected. display Lights up while the signal is transmitted to the indoor unit when the button is pressed. display 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.
4 SPECIFICATION 4-1. SPECIFICATIONS Power source Cooling capacity (Nominal) *1 *1 *1 *2 Power input Current input Heating capacity (Nominal ) *3 *3 *3 Power input Current input External finish External dimension H x W x D Net weight Heat exchanger Fan Type x 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 1.7 1,450 5,800 1,500 0.04 0.20 1.9 1,600 6,500 0.04 0.20 mm in.
4-2. ELECTRICAL PARTS SPECIFICATIONS Service ref. Parts name Symbol PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3 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 Resistance 0 /15k , 10 /9.
295 Drain hose (Effective length: 640) 3 24.4 54 5 R1 R8 45 R1 5 Knockout hole for under piping Knockout hole of remote controller wiring Knockout hole for left piping 45 16 R8 10 50 91.5 2.5 10 R8 34 Knockout hole of right piping Knockout hole for remocon wiring 520 Liquid pipe 450 Gas pipe 695 Air outlet 640 Air intake 640 Air intake 815 116 110 N The first side L The second side M1 Terminal block Detailed 3 106.7 115 M2 60 100.
WIRING DIAGRAM PKFY-P25VBM-E Symbol MV LEV TB2 TB5 TH21 Symbol Name Vane motor SW5 Linear expansion valve SW11 SW12 Terminal Power supply block Transmission SW14 Thermistor Room temp.detection W.B (0 /15k ,25 /5.4k ) RU Pipe temp.detection/liquid BZ TH22 (0 /15k ,25 /5.4k ) LED1 Pipe temp.detection/Gas LED2 TH23 (0 /15k ,25 /5.4k ) SW1 Address board A.B SW2 Mode selection SW1 Switch 9 ON OFF 240V SW1 (RED) 4 ADDRESS CN43 1 CN51 5 1 CN52 8 SW12 0 SW11 0 10ths DIGIT 1s DIGIT BRANDH No.
PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 Symbol MV LEV TB2 TB5 TH21 Symbol Name Vane motor SW5 Linear expansion valve SW11 SW12 Terminal Power supply block Transmission SW14 Thermistor Room temp.detection W.B (0 /15k ,25 /5.4k ) RU Pipe temp.detection/Liquid BZ TH22 (0 /15k ,25 /5.4k ) LED1 Pipe temp.detection/Gas LED2 TH23 (0 /15k ,25 /5.4k ) SW1 Address board A.B SW2 Mode selection SW1 Switch 1 RED ON OFF SW5 1 240V SW1 (RED) 4 ADDRESS CN43 1 1 M 1~ CN52 8 SW12 SW11 0 0 10ths 1s DIGIT DIGIT BRANCH No.
Symbol MV LEV TB2 TB5 TH21 Symbol Name Vane motor SW5 Linear expansion valve SW11 SW12 Terminal Power supply block Transmission SW14 Thermistor Room temp,detection W.B (0°C/15kΩ,25°C/5.4kΩ) RU Pipe temp,detection/Liquid BZ TH22 (0°C/15kΩ,25°C/5.4kΩ) LED1 Pipe temp,detection/Gas LED2 TH23 (0°C/15kΩ,25°C/5.4kΩ) SW1 Address board A.B SW2 Mode selection SW1 Switch MV 9 t° CNB BZ 1 CN60 6 LEV (WHT) LED1 LED2 A.
7 REFRIGERANT SYSTEM DIAGRAM PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3 Gas pipe temperature thermistor TH23 Gas pipe Strainer (#100mesh) Flare Liquid pipe temperature thermistor TH22 Strainer (#100mesh) Heat exchanger Room temperature thermistor TH21 Linear expansion valve Strainer (#100mesh) Unit: mm(inch) PKFY-P15, 20, 25VBM-E PKFY-P20, 25VBM-ER1 PKFY-P15, 20, 25VBM-E
Thermistor for lower temperature < Thermistor for lower temperature > 50 Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe temperature thermistor (TH23) 40 Rt=15exp { 3480( 1 273+t 0: 15k' 10: 9.6k' 20: 6.3k' 25: 5.4k' 30: 4.3k' 40: 3.
8-2.
The black square ( 78 78 90 1 Address board Before power supply ON SW14 F01 45 6 CDE AB 78 78 45 6 45 6 CDE AB SW11 90 1 23 How to set branch number SW14 (Series R2 only). Match the indoor unit’s refrigerant pipe with the BC contoller’s end connection number Remain other than series R2 at "0". F01 SW12 23 SW14 789 45 6 1 How to set address Example : If address is "3", remain SW12 (for over 10) at "0", and match SW11 (for 1 to 9) with "3".
8-3. TEST POINT DIAGRAM 8-3-1. Indoor controller board PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 CN60 Linear expansion valve output (LEV) CN5V Vane motor output (MV) PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 CN42 Connected to the address board (CN43) CN90 Connected to the wireless remote controller board (W.
Indoor controller board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 CN60 Linear expansion valve output (LEV) CN5V Vane motor output (MV) CN42 Connected to the address board (CN43) CN90 Connected to the wireless remote controller board (W.
8-3-2. Indoor power board PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3 FAN Fan motor output (MF) CN2M Connected to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar) FUSE 6.3A 250V CN35P Connected to the indoor controller board (CN35M) CN53P Connected to the indoor controller board (CN53M) Between 1 to 2 24-30V DC (non-polat) Between 3 to 5 12.
8-3-2. Indoor power board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3 CND Power supply for indoor controller board Between 1 to 3 220-240V AC FAN Fan motor output (MF) CN2M Connected to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar) FUSE 6.
9 DISASSEMBLY PROCEDURE PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-E PKFY-P25VBM-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 When there is removing plate (1) Remove the corner box at right lower side of the indoor unit and remove the removing plate from the corner box.
OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 3. REMOVING THE INDOOR CONTROLLER BOARD AND INDOOR POWER BOARD Electrical box cover Photo 2 (1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover (screw 4 × 10). (See Photo 2) INDOOR CONTROLLER BOARD (1) Disconnect the following connectors from the indoor controller board. CN60, CN5V, CN90, CN29, CN21 CN42, CN81, CN3A, CN20 (2) Pull out the indoor controller board toward you, then disconnect the rest of connectors.
OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 5. REMOVING THE NOZZLE ASSEMBLY AND DRAIN HOSE (1) Remove the front panel (Refer to procedure 2). (2) Remove the electrical box cover. (See Photo 2) (3) Disconnect the connector (CN5V) on the indoor controller board. (4) After unhook the right side of the corner box, press the upper left side and remove the corner box. (5) Remove the nozzle assembly from the fixture. (See Photo 5) (6) Remove the drain hose. 6.
PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3 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 When there is removing plate (1) Remove the corner box at right lower side of the indoor unit and remove the removing plate from the corner box.
OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 3. REMOVING THE INDOOR CONTROLLER BOARD AND INDOOR POWER BOARD Photo 2 Electrical box cover (1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover (screw 4 × 10). (See Photo 2) INDOOR CONTROLLER BOARD (1) Disconnect the following connectors from the indoor controller board. CN60, CN5V, CN90, CN29, CN21 CN42, CN81, CN3A, CN20 (2) Pull out the indoor controller board toward you, then disconnect the rest of connectors.
OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 6. REMOVING THE ELECTRICAL BOX Photo 6 (1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover. (See Photo 2) (3) Remove the water cut. (See Photo 3) (4) Pull the nozzle assembly toward you as opening the catch of the nozzle assembly. (See 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.
OPERATION PROCEDURE 8. REMOVING THE VANE MOTOR (1) Remove the front panel. (Refer to procedure 2) (2) Remove the screw of the electrical parts box cover, and remove the cover. (3) Remove the 2 screws of the vane motor. (See Photo 10) Disconnect the relay connector and remove the motor from the shaft. (4) Disconnect the vane motor connector (CN5V) on the indoor controller board. PHOTOS & ILLUSTRATIONS Photo 10 Heat exchanger Vane motor fixing screws Vane motor 9.
