TECHNICAL & SERVICE MANUAL
Contents
1. aq epis eu S Buipunouns Joopino 5 WIRING DIAGRAM PUH 4VKSA UK SYMBOL NAME SYMBOL NAME SYMBOL NAME CN3 O B CONNECTOR CONNECTING MC COMPRESSOR X12 lt 0 B gt COMPRESSOR RELAY WIRES INDOOR OUTDOOR MF FAN MOTOR X13 lt 0 B gt SOLENOID COIL RELAY 4 lt gt CONNECTOR TRANSFORMER OUTDOOR CONTROLLER BOARD 14 lt gt SOLENOID COIL RELAY HC CRANKCASE HEATER 21R SOLENOID COIL BYPASS VALVE X16 HIGH PRESSURE RELAY C1 FAN MOTOR CAPACITOR SW1 2 3 0 B SELECT SWITCH CHECK SERVICE ZNR lt O B gt SURGE ABSORBER C2 COMPRESSOR CAPACITOR T TRANSFORMER 2184 4 WAY VALVE SOLENOID COIL lt gt FAN CONTROLLER TB1 3 TERMINAL BLOCK 52C COMPRESSOR CONTACTOR lt gt __ TH OUTDOOR COIL THERMISTOR 63 1 CONTROL HIGH PRESSURE SWITCH LD1 LD8 lt 0 B gt2. 43 2 42 0 820mm 5 Q 215 e e e s S70 993 418 RESTRICTOR VALVE 570 42L 450 STRAINER S70 260 403 4 WAY VALVE S70 A02 20 DISCHARGE PIPE THERMOSTAT 570 11 450 STRAINER S70 943 413 CHARGE PLUG S70 A01 413 CHARGE PLUG 570 670 411 BALL VALVE 570 943 410 BALL VALVE 570 14 490 OIL SEPARATOR 570 A12 440 ACCUMULATOR 70 A00 202 OUTDOOR COIL THERMISTOR 570 610 300 COMPRESSOR NH 56VNDT S70 A02 236 CRANKCASE HEATER 240V 38W S70 A00 208 CONTROL HIGH PRESSURE SWITCH OFF ON 2 55MPa 2 1MPa 570 04 208 PROTECT HIGH PRESSURE SWITCH OFF ON 3 3MPa 2 1MPa S70 012 408 OUTDOOR HEAT EXCHANGER S70 30L 097 NUT M8 S07 113 425 CAPILLARY TUBE 2 5 60 6 1000 570 737 215 HIGH PRESSURE RELAY LY 2F 230V 10A 570 040 723 COMPRESSOR CAPACITOR 60uF 450V S70 A00 242 4WAY COIL a a nin ss ax ad td 5 lt 5 a dad ad lt lt 9 OPTIONAL PARTS AIR OUTLET GUIDE This guide is for changing the outdoor unit air discharge direction For PUH 4 5 6 type 2 sets of PAC 292SG are needed Part No PAC 292SG 1 pc set Applied Ser
3. LED CHECK SERVICE X11 lt 0 B gt CRANKCASE HEATER RELAY 63 2 PROTECT HIGH PRESSURE SWITCH 26C DISCHARGE PIPE THERMOSTAT 77 EARTH TOINDOORUNIT LED TH CONNECTING WIRES 2 RN 5 cu 3 abono gt sw 28999999 H eee 3 oo as 1 9 x14 x13 x12 26 o ER ENS _ Wa 1 510M 1 4321 _ _ E zm Sv 2184 520 T cH Ahh 5p ala gt gt Zia see BD dal 8 BRN 1 rd WHT WHT nw 63H1 X16 om 7 gt LU LS ol MF RED WHT 12 3 220V WHT T WHT WHT RED BLU 4 BLU T scm T1 2 erases the past check contents stored on the microcomputer The output display light remains during operation Swa in flashing mode Pressing the switch again returns displays the past check contents BOWER SUPE E RED RED BLK R b BLU S m PEREPERE GRANUW 5205 Main functions of LED when both No 1 and No 2 of SW3 are OFF How to use SW1 and SW2 LED No Output Display light Check Display flashing Pressing SW1 LD1 Compressor indoor command LD2 Heating indoor command LD3 63H1 ON Pipe sensor short open but pressing LD4 Compressor ON 63H2 functions LD5 Outdoor fan ON to output display light LD6 4 way valve ON 26C Overhe
4. C 15 C WB 5 C DB Upper limit 27 C DB 24 C DB 18 C WB Heating Lower limit 20 C DB 5 C DB 6 C WB 3 Above values are as follows Indoor Unit 1 phase 240V 50Hz Outdoor Unit 1 phase 240V 50Hz 3 DATA 1 REFILLING REFRIGERANT CHARGE R 22 kg Refrigerant pipimg length one way Service Ref 20m 25m 30m 35m PUH 4VKSA UK 3 9 4 1 4 2 4 4 2 COMPRESSOR TECHNICAL DATA Outdoor unit PUH 4VKSA UK Compressor Model NH56VNDT U V Winding R C Resistance U W Q R C at 20 C W V OUTLINES AND DIMENSIONS 4 Unit mm inch PUH 4VKSA UK sounBy rejop Buidid La gt 99 n EN oq prepueis GZ SS 9 1 eu 10 sajoy no i 09 Poli ial Ip eoeds 001 008 Ol PI Buum pue 59104 payojou p deus n z lou no 99990 YY Y UY Y E ejou MO V 9 ON z 2 pu
5. 0 240 Input 3 52 Running current 16 3 Starting current 79 External finish Munsell 5Y 7 1 Refrigerant control Capillary tube Compressor Hermetic Model NH56VNDT Motor output 2 7 Starter type Line start Protection devices Internal thermostat thermal switch Hp switch Cranckcase heater 38 Heat exchanger Plate fin coil Fan drive x No Propeller direct x2 Fan motor output 0 065 0 065 Airflow 95 Defrost method Reverse cycle Noise level 54 870 34 1 4 Dimensions 295 24 11 5 8 add 1 1258 49 1 4 Weight 94 207 REFRIGERANT PIPING Refrigerant R 22 Charge 4 2 9 2 Oil Model 1600 MS 32 Liquid 9 52 3 8 Pipe size O D 12 Gas 19 05 3 4 Indoor side Flared Connection method Outdoor side Flared Height difference Max 50m Between the indoor amp outdoor unit Piping length Notes1 Rating Conditions JIS B8616 Cooling Indoor 27 C 80 F DB 19 C 66 F WB Outdoor 35 C Heating Indoor 20 C 68 F DB Refigerant piping length one way 5m 16ft 2 Guaranteed operating range Max 50m 95 F DB 24 C 75 F WB Outdoor 7 C 45 F DB 6 C 43 F WB Indoor Outdoor Coolin Upper limit 32 C DB 23 C WB 43 C DB Lower limit 21
6. ADVANCED AND EVER ADVANCING MITSUBISHI ELECTRIC ad SPLIT TYPE HEAT PUMP AIR CONDITIONERS 1 999 No OC184 Outdoor unit Model names Service Ref PUH 4VKSA PUH 4VKSA UK CONTENTS 1 PART NAMES AND 65 2 2 2 SpEGIEIGATIONS 2 Su DATA OE E A 3 0 J 4 OUTLINES AND DIMENSIONS 4 SA 5 WIRING DIAGRAM 5 d 6 REFRIGERANT SYSTEM 6 7 DISASSEMBLY PROCEDURE 7 SSPARTS LISTo B 9 9 OPTIONAL Back cover OUTDOOR UNIT The Slim Line From Mitsubishi Electric i SLIM Air intake PUH 4VKSA UK PART NAMES AND FUNCTIONS CHARGELESS SYSTEM PRE CHARGED REFRIGERANT IS SUPPLIED FOR UP TO 30m PIPING LENGTH AT SHIP MENT The unique refrigerant circuit and a large accumulator always control the optimal refrigerant level regardless of the length 50m max and 5m min of piping The addi tional refrigerant charging work during installation often causes problems Therefore it is completely eliminated This unique system improves the quality and reliability of the work done It also helps to speed up the installation work z cc Q Q a o Service Ref PUH 4VKSA UK Power supply phase cycle voltage Single 50Hz 22
7. at protection LD7 Bypass valve ON TH overheat protection LD8 Crankcase heater ON Defective input CAUTION FOR SERVICING CAUTIONS FOR POWER SUPPLY WIRING NOTE If the operation of the protection device stops to function then check the display flashes Connect the lead wires according to the colour indication of the sticker on the compressor terminal Since LD8 lights when normal power is turned ON check the power supply with the ON or OFF LD8 Since the outdoor transformer T is connected with 240V power if 220V or 230V power is used change the wiring connections according to the following procedure CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES When Power Supply is 220V YELLOW 240 nS ee ORANGE 230V RED 220V WHITE Since the indoor and outdoor connecting wires have sure to connect the same terminal numbers 1 2 3 for indoor and outdoor units PUH 4VKSA UK 6 REFRIGERANT SYSTEM DIAGRAM Unit mm Refrigerant flow in cooling gt Refrigerant flow in heating a Protective high ontro switch pressure switch Oil separator Outdoor unit check Refrigerant pipe T doarea option 4 ervice utd
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9. ge plug Accumulator Ball valve Compressor 8 PARTS LIST STRUCTURAL PARTS PUH 4VKSA UK 6 12 1043 1 9 14 Q ty set Part name Specification PUH 4 Remarks pDiagrammended VKSA UK Symbol Q ty Wiring Recom TOP PANEL 1 FRONT PANEL FAN GUARD PANEL HANDLE SERVICE PANEL SIDE PANEL REAR PANEL PANEL COVER REAR GUARD MOTOR SUPPORT BASE F ST SCREW Z004M203H10 MOTOR PLATE BG00G231G01 LABEL MITSUBISHI BC79G510H01 FUNCTIONAL PARTS PUH 4VKSA UK 5 79 x PF 21 20 26 25 28 19 numbers are circled are shown in figure Part No Part name Specification Q ty set PUH 4 VKSA UK Remarks Wiring Diagram Symbol Recom mended Q ty 570 040 763 MOTOR PN6V60 UA 2 MF S70 001 115 PROPELLER S70 A04 315 OUTDOOR CONTROLLER BOARD O B S70 A01 529 D P ASSY S70 509 716 TERMINAL BLOCK 3P L N O S70 516 716 TERMINAL BLOCK 3P 1 2 3 S70 106 799 TRANSFORMER 570 39J 255 FAN MOTOR CAPACITOR 4uF 440V S70 956 708 COMPRESSOR CONTACTOR S N35 S70 272 428 SOLENOID VALVE S70 106 242 SOLENOID COIL S70 A00 425 CAPILLARY TUBE
10. nel is hooked by 3 catches on the left side 2 Remove the propeller nuts and the propellers 3 Remove the 3 screws each and the fan motors Disconnect the lead connectors High pressure 1 switch Propeller nut 5 a a Valve bed OPERATING PROCEDURE PHOTOS 3 Removing the heat exchanger and the compressor Photo 4 NOTE When removing the panels move them up and down to unhook catches Screws 1 Remove the rear panel set screws 2 screws at the front 1 screw on the side and 3 screws at the rear 2 Remove the valve bed 3 Open the rear panel rearward to remove 4 Remove the 4 screws of the right side panel and remove it 5 Remove the 3 screws of the rear guard and remove it 6 Remove the 4screws of the separator support plate and remove it 7 Remove the 2 screws of the motor support and remove it 8 Remove the 5 screws of the valve bed Lift the valve bed to unhook the catches on both sides 9 Remove the electrical parts box 10 Disconnect the connectors of the high pressure switch crankcase heater shell thermo and fan motor 1 Remove the 2 screws of the separator and remove it 12 Remove the 2 screws of the heat exchanger and remove it 13 Detach the brazed points of the pipe Photo 5 14 Remove the 3 nuts of the compressor and remove it 15 Detach the welded points of the suction pipe and dis charge pipe Screws Heat exchanger Photo 6 Char
11. oor heat exchanger Indoor unit 19 05nm 3 4 Barva enn with heat insulator _ Strainer EN 5 lt Indoor Flexible tube Thermistor Shite PS TH3 port Ht LES Restrictor heat exchanger PA Strainer Flared Bypass waive 34 connection Capillary Thermal Y Thermisto Restrictor switch tube 1 TH2 valve Accumulator Compressor Discharge p 15 Strainer Distributor H with strainer Capillary tube Refrigerant pipe Ball valve option 9 52mm 4 3 8 with heat insulator with service port 1 0 0 3 2 1 0 2 0 820 x2pcs 7 DISASSEMBLY PROCEDURE PUH 4VKSA UK OPERATING PROCEDURE PHOTOS 1 Removing the electrical parts Photo 1 1 Remove the 3 screws at the front and 2 screws at the Screws rear of the top panel en 2 Remove the top panel 3 Remove the screw from the panel cover Unhook the catches from the side panel and pull the panel cover toward you to remove 4 Remove the screw from the service panel Pull down the service panel to unhook the catches Pull the ser vice panel toward you to remove Panel cover Photo 2 Photo 3 Motor support Separator support plate 2 Removing the fan motors 1 Remove the 3 screws and the front panel Open the panel to a 45 degree angle and lift it to remove The pa
12. vice PUH 1 6 6K S A type 238 4 holes 7 524 6 7 i RS RS RS S y S PB RS RS RS 72 a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUCHI 100 8310 TELEX J24532 CABLE MELCO TOKYO Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO LTD Issued in 1999 No OC184 242 New publication effective Mar 1999 Printed in Japan Specifications subject to change without notice
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