Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy MUZ-A09YV - MUZ-A12YVH - E1

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1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS Revision A: MUZ-AYV- E and MUZ-AYVHcan be connected to MCFZ-AWV- E. E Some mistakes were corrected. Please void OB8. SERVICE MANUAL Wireless type Models E MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E HFC utilized R40A. OB8 REVISED EDITION-A Indication of model name MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - E MUZ-AYVH - E CONTENTS. TECHNICAL CHANGES. PART NAMES AND FUNCTIONS 5. SPECIFICATION 5 4. NOISE CRITERIA CURVES 7 5. OUTLINES AND DIMENSIONS 8 6. WIRING DIAGRAM 9 7. REFRIGERANT SYSTEM DIAGRAM 8. PERFORMANCE CURVES 9. ACTUATOR CONTROL 0. SERVICE FUNCTIONS. TROUBLESHOOTING. DISASSEMBLY INSTRUCTIONS 4. PARTS LIST 8 NOTE: This service manual describes technical data of the outdoor units. As for indoor units MSZ-A09YV- E and MSZ-AYV- E, refer to the service manual OB7. As for indoor unit MCFZ-AWV- E, refer to the service manual OB44.

2 Revision A: MUZ-AYV- E and MUZ-AYVH- E can be connected to MCFZ-AWV- E. Some mistakes were corrected. TECHNICAL CHANGES INFORMATION FOR THE AIR CONDITIONER WITH R40A REFRIGERANT This room air conditioner adopts an HFC refrigerant (R40A) which never destroys the ozone layer. Pay particular attention to the following points, though the basic installation procedure is same as that for R air conditioners. As R40A has working pressure approximate.6 times as high as that of R, some special tools and piping parts/ materials are required. Refer to the table below. Take sufficient care not to allow water and other contaminations to enter the R40A refrigerant during storage and installation, since it is more susceptible to contaminations than R. For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R40A. (Refer to. Refrigerant piping.) 4 Composition change may occur in R40A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent composition change. Refrigerating Refrigerant oil New refrigerant Refrigerant R40A Composition (Ratio) HFC-: HFC-5 (50%:50%) Refrigerant handling Pseudo-azeotropic refrigerant Chlorine t included Safety group (ASHRAE) A/A Molecular weight 7.6 Boiling point (:) -5.4 Steam pressure [5:](Mpa).557 Saturated steam density [5:](Kg/K) 64 Combustibility n combustible ODP w 0 GWP w 70 Refrigerant charge method From liquid phase in cylinder Additional charge on leakage Possible Kind Incompatible oil Color n Smell n w :Ozone Destruction Parameter : based on CFC- w :Global Warmth Parameter : based on CO Previous refrigerant R R (00%) Single refrigerant Included A n combustible Gas phase Possible Compatible oil Light yellow n Compressor New Specification Current Specification The incompatible refrigerating oil easily separates from refrigerant and is in the upper layer inside the suction muffler. Raising position of the oil back hole enables to back the Since refrigerant and refrigerating oil are compatible each, refrigerating oil backs to the compressor through the lower position oil back hole. refrigerating oil of the upper layer to flow back to the compressor. Suction muffler Suction muffler Compressor Oil back hole Refrigerating oil Compressor Oil back hole Refrigerant Refrigerating oil /Refrigerant NOTE : The unit of pressure has been changed to MPa on the international system of units(si unit system). The conversion factor is: (MPa [Gauge]) =0.(kgf/f [Gauge])

3 Conversion chart of refrigerant temperature and pressure (MPa [Gauge]) R40A Saturated liquid pressure R NOTE : The unit of pressure has been changed to MPa on the international system of units(si unit system). The conversion factor is: (MPa [Gauge]) =0.(kgf/f [Gauge]) (:).Tools dedicated for the air conditioner with R40A refrigerant The following tools are required for R40A refrigerant. Some R tools can be substituted for R40A tools. The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being charged into the unit. Cap size has been changed from 7/6 UNF with 0 threads to / UNF with 0 threads. R40A tools Gauge manifold Charge hose Gas leak detector Torque wrench Flare tool Flare gauge Vacuum pump adapter Electronic scale for refrigerant charging : t Substitutable for R40A Can R tools be used? New New New Description R40A has high pressures beyond the measurement range of existing gauges. Port diameters have been changed to prevent any other refrigerant from being charged into the unit. Hose material and cap size have been changed to improve the pressure resistance. Dedicated for HFC refrigerant. 6.5 mm and 9.5 mm.7 mm Clamp bar hole has been enlarged to reinforce the spring strength in the tool. Provided for flaring work (to be used with R flare tool). Provided to prevent the back flow of oil. This adapter enables you to use vacuum pumps. It is difficult to measure R40A with a charging cylinder because the refrigerant bubbles due to high pressure and high-speed vaporization : Substitutable for R40A.Refrigerant piping Specifications Use the refrigerant pipes that meet the following specifications. Pipe For liquid For gas Outside diameter mm Wall thickness 0.8 mm 0.8 mm 0.8 mm Insulation material Heat resisting foam plastic Specific gravity Thickness 8 mm Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a thickness less than 0.8mm, as the pressure resistance is insufficient.

4 Flaring work and flare nut Flaring work for R40A pipe differs from that for R pipe. For details of flaring work, refer to Installation manual FLARING WORK. Pipe diameter mm Dimension of flare nut R40A 7 6 R 7 4.Refrigerant oil Apply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces. 4.Air purge Do not discharge the refrigerant into the atmosphere. Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit. Use the vacuum pump for air purging for the purpose of environmental protection. 5.Additional charge For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the outdoor unit. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However, charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly. Indoor unit Refrigerant gas cylinder operating valve Union Liquid pipe Gas pipe Service port Stop valve Outdoor unit Gauge manifold valve (for R40A) Charge hose (for R40A) Refrigerant gas cylinder for R40A with siphon Refrigerant (liquid) Electronic scale for refrigerant charging 4

5 PART NAMES AND FUNCTIONS MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E OUTDOOR UNIT Air inlet (back and side) Piping Drain hose Air outlet ACCESSORIES OUTDOOR UNIT MUZ-A09YV - E MUZ-AYV - E Drain socket Drain outlet SPECIFICATION Capacity Electrical data Compressor Fan motor Special remarks Outdoor model Function Power supply Capacity Rated frequency(min.~max.) Dehumidification Air flow Starting current Compressor motor current Fan motor current Coefficient of performance(c.o.p) Model Output Winding resistance(at 0:) Model Winding resistance(at 0:) Dimensions WOHOD Weight Sound level Fan speed Fan speed regulator Refrigerant filling capacity(r40a) Refrigerating oil (Model) Thermistor RT6(at 0:) Thermistor RT6(at 00:) Thermistor RT64(at 50:) Thermistor RT65(at 5:) kw r/h K /h A A A W " " mm kg db(a) rpm kg cc k" k" k" k" NOTE : Test conditions are based on ISO 55 Cooling : Indoor DB 7: WB 9: Outdoor DB 5: WB(4:) Heating : Indoor DB 0: WB 5: Outdoor DB 7: WB 6: Refrigerant piping length (one way): 5m Measured under rated operating frequency MUZ-A09YV - E MUZ-A09YVH - E Indoor model MSZ-A09YV - E Cooling Heating Single phase 0V,50Hz.5 (0.9-.). ( ) KNB07FBVH 550 U-V.5 U-W.5 V-W.5 RA6V-AA WHT-BLK 47 BLK-RED 8 800o550o (NEO) MUZ-AYV - E MUZ-AYVH - E Indoor model MSZ-AYV - E Cooling Heating Single phase 0V,50Hz.5 (.0-4.) 4.0 ( ) KNB09FAAH 650 U-V 0.49 U-W 0.49 V-W 0.49 RA6V-AA WHT-BLK 47 BLK-RED 8 800o550o (NEO) MUZ-AYV - E MUZ-AYVH - E Indoor model MCFZ-AWV - E Cooling Heating Single phase 0V,50Hz.5 (.0-4.).9 ( ) KNB09FAAH 650 U-V 0.49 U-W 0.49 V-W 0.49 RA6V-AA WHT-BLK 47 BLK-RED 8 800o550o (NEO)

6 Specifications and rating conditions of main electric parts OUTDOOR UNIT Model Item Current transformer Current transformer Smoothing capacitor (C6A, C6B, C6B) Outdoor fan capacitor Diode module Fuse Fuse Defrost heater (CT) (CT76, CT78) (C65) (DB6, DB65) (F6) (F7, F80) (H) Power transistor module (IPM) Expansion valve coil (LEV) Reactor (L6) Current-detecting resistor (R6) Current-detecting resistor (R8) Current-limiting resistor (R64A, R64B) Solid state relay (SR6) Terminal block (TB) Relay (X6) Relay (X64) Relay (X66) R.V. coil (S4) Heater protector (6H) Outdoor fan motor thermal fuse MUZ-A09YV - E MUZ-A09YVH - E MUZ-AYV - E MUZ-AYVH - E ETQ9Z5AY ETQ9Z7AY V V D5XB60 50V 0A 50V.5A 0V 0W 0V 0W PS44A CAD-MDME VDC 0A.0mH 45m" 5W 50m" 5W ( elements) 5m" 5W 5." 0W GMB P G5N-a/G5NB-a G4A-A-PS G5N-a/G5NB-a G5N-a/G5NB-a LD00 Open 45: Open 45: Open 5: 6

7 4 NOISE CRITERIA CURVES MUZ-A09YV - E MUZ-A09YVH - E MUZ-AYV - E MUZ-AYVH - E SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE High COOLING HEATING High COOLING HEATING Test conditions, Cooling : Dry-bulb temperature 5: Wet-bulb temperature (4:) Heating : Dry-bulb temperature 7: Wet-bulb temperature 6: 90 OCTAVE BAND SOUND PRESSURE LEVEL, db re MICRO BAR APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE BAND CENTER FREQUENCIES, Hz NC-70 NC-60 NC-50 NC-40 NC-0 NC-0 Test conditions, Cooling : Dry-bulb temperature 5: Wet-bulb temperature (4:) Heating : Dry-bulb temperature 7: Wet-bulb temperature 6: 90 OCTAVE BAND SOUND PRESSURE LEVEL, db re MICRO BAR APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE BAND CENTER FREQUENCIES, Hz NC-70 NC-60 NC-50 NC-40 NC-0 NC-0 OUTDOORUNIT m MICROPHONE 7

8 5 OUTLINES AND DIMENSIONS MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E Unit: mm OUTDOOR UNIT REQUIRED SPACE Basically open 00mm or more without any obstruction in front and on both sides of the unit. 400 Air in Drain hole [4 (MUZ-A09/AYV) Drain hole [ (MUZ-A09/AYVH) 00mm or more 00mm or more Air in Bolt pitch for installation 04~5 00mm or more 50mm or more. holes 0o Air out Service panel Handle Open two sides of left, right, or rear side. Liquid refrigerant pipe joint Refrigerant pipe (flared) [ Service port Gas refrigerant pipe joint Refrigerant pipe (flared) [ Bolt pitch for installation 800 8

9 6 WIRING DIAGRAM MUZ-A09YV - E MUZ-AYV - E OUTDOOR UNIT BLK L6 TAB6 BLK BLK L6 L6 TAB6 WHT F6 R64A BLU WHT BLU RED TB MODELS WIRING DIAGRAM U 0V~ BLK WHT RED CN6 U DB6 W RED LD-U LD-V P R64B CT N V F80 MC C6A C6B LD70 X64 TAB6 LD-W N C6B V W R6 T80 BLK CT GRN/YLW TO INDOOR UNIT CONNEC- TING V CT78 IPM BLU BLU 4 DSA WHT LD69 6 LEV X6 GRN NR6 F7 IC80 TR8 S4 LDE C N 7 4 CN7 SR6 C65 INVERTER P.C. BOARD DB65 R8 CN800 MF CN77 CN64 4 CN64 CN64 CN60 C N 7 POWER P.C. BOARD 7 5 C N 7 6 RT6RT6 RT64 RT65 NOTE:. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing..use copper conductors only. (For field wiring). Symbols below indicate. /: Terminal block, : Connector NAME AMBIENT TEMPERATURE THERMISTOR CURRENT-DETECTING RESISTOR CURRENT-LIMITING RESISTOR SOLID STATE RELAY TERMINAL BLOCK SWITCHING POWER TRANSISTOR TRANSFORMER RELAY R.V. COIL SYMBOL RT65 R6,R8 R64A,R64B SR6 TB TR8 T80 X6,X64 S4 NAME EXPANSION VALVE COIL REACTOR CMC COIL COMPRESSOR OUTDOOR FAN MOTOR (INNER FUSE) VARISTOR DEFROST THERMISTOR DISCHARGE TEMPERATURE THERMISTOR FIN TEMPERATURE THERMISTOR SYMBOL LEV L6 L6,L6 MC MF NR6 RT6 RT6 RT64 NAME CURRENT TRANSFORMER SMOOTHING CAPACITOR OUTDOOR FAN CAPACITOR DIODE MODULE SURGE ABSORBER FUSE (0A) FUSE (.5A) INTELLIGENT POWER DEVICE POWER TRANSISTOR MODULE SYMBOL CT,CT76,CT78 C6A,C6B,C6B C65 DB6,DB65 DSA F6 F7,F80 IC80 IPM 9

10 MUZ-A09YVH - E MUZ-AYVH - E OUTDOOR UNIT L6 BLK BLK BLK TAB6 L6 L6 TAB6 WHT F6 R64A R64B X64 WHT BLU RED TB 0V~ MODELS WIRING DIAGRAM U BLK WHT RED CN6 U DB6 CT76 P N V MC W RED LD-U LD-V F C6A C6B LD70 TAB6 LD-W N C6B V W CT78 R6 T80 BLK BLU BLU 4 CT DSA GRN/YLW TO INDOOR UNIT CONNEC- TING V WHT IPM LD69 6 LEV C N7 X6 F7 NR6 GRN IC80 BLU 4 TR8 S4 LDE CN7 RED DB65 X66 SR6 C65 INVERTER P.C. BOARD BLK BLK BLK BLK R8 CN800 MF CN77 YLW CN7 C N7 6H H BLK BLK BLK CN64 4 CN64 CN64 CN60 7 C N7 5 6 POWER P.C. BOARD RT65 RT6RT6 RT64 0 NOTE:. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing..use copper conductors only. (For field wiring). Symbols below indicate. /: Terminal block, : Connector NAME CURRENT-DETECTING RESISTOR CURRENT-LIMITING RESISTOR SOLID STATE RELAY TERMINAL BLOCK SWITCHING POWER TRANSISTOR TRANSFORMER RELAY R.V. COIL HEATER PROTECTOR SYMBOL R6,R8 R64A,R64B SR6 TB TR8 T80 X6,X64,X66 S4 6H NAME EXPANSION VALVE COIL REACTOR CMC COIL COMPRESSOR OUTDOOR FAN MOTOR (INNER FUSE) VARISTOR DEFROST THERMISTOR DISCHARGE TEMPERATURE THERMISTOR FIN TEMPERATURE THERMISTOR AMBIENT TEMPERATURE THERMISTOR SYMBOL LEV L6 L6,L6 MC MF NR6 RT6 RT6 RT64 RT65 NAME CURRENT TRANSFORMER SMOOTHING CAPACITOR OUTDOOR FAN CAPACITOR DIODE MODULE SURGE ABSORBER FUSE (0A) FUSE (.5A) DEFROST HEATER INTELLIGENT POWER DEVICE POWER TRANSISTOR MODULE SYMBOL CT,CT76,CT78 C6A,C6B,C6B C65 DB6,DB65 DSA F6 F7,F80 H IC80 IPM

11 7 REFRIGERANT SYSTEM DIAGRAM MUZ-A09YV - E MUZ-A09YVH - E MUZ-AYV - E MUZ-AYVH - E OUTDOOR UNIT Refrigerant pipe [9.5 (with heat insulator) Muffler 4-way valve Unit:mm Flared connection Stop valve (with service port) Discharge temperatuer thermistor RT6 Muffler Compressor Defrost thermistor RT6 Outdoor heat exchanger Ambient Temperature Thermistor RT65 Flared connection Refrigerant pipe [6.5 (with heat insulator) Muffler Stop valve (with strainer) Expansion valve Capillary tube [.0 [.0 00 Strainer R.V. coil heating ON cooling OFF Refrigerant flow in cooling Refrigerant flow in heating MAX. REFRIGERANT PIPING LENGTH Model Refrigerant piping Max. length : m A Piping size O.D : mm Gas Liquid Length of connecting pipe : m Indoor unit Outdoor unit MUZ-A09YV - E MUZ-A09YVH - E MUZ-AYV - E MUZ-AYVH - E Gas 0.4 Liquid 0.5 MAX. HEIGHT DIFFERENCE Indoor unit w Max. Height difference m Refrigerant Piping Max. length A Outdoor unit w Height difference should be within m regardless of which unit, indoor or outdoor position is high.

12 ADDITIONAL REFRIGERANT CHARGE (R40A:g) Model Outdoor unit precharged 5m 6m 7m 8m Refrigerant piping length (one way) 9m 0m m m m 4m 5m 0m MUZ-A09YV - E MUZ-A09YVH - E MUZ-AYV - E MUZ-AYVH - E Calculation : Xg=0g/mo(Refrigerant piping length(m) - 5) 8 PERFORMANCE CURVES MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions. Since operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. () GUARANTEED VOLTAGE 98 ~ 64V, 50Hz () AIR FLOW Air flow should be set at MAX. () MAIN READINGS () Indoor intake air wet-bulb temperature : C WB } Cooling () Indoor outlet air wet-bulb temperature : C WB () Outdoor intake air dry-bulb temperature : C DB (4) Total input: W (5) Indoor intake air dry-bulb temperature : C DB (6) Outdoor intake air wet-bulb temperature : C WB (7) Total input : W Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service. } Heating How to measure the indoor air wet-bulb / dry-bulb temperature difference. Attach at least sets of wet and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least sets of wet and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high.. Attach at least sets of wet and dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun.. Check that the air filter is cleaned. 4. Open windows and doors of room. 5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE. 6. When system stabilizes after more than 5 minutes, measure temperature and take an average temperature minutes later, measure temperature again and check that the temperature does not change.

13 INDOOR UNIT OUTDOOR UNIT MSZ type MCFZ type Air out Wet and dry-bulb thermometers Air in Wet and dry-bulb thermometers Wet and dry-bulb thermometers Indoor air Wet-bulb temperature difference (degree) Indoor intake air Wet-bulb temperature (:) Indoor intake air Wet-bulb temperature (:) MSZ-A09YV - E MUZ-A09YV - E MUZ-A09YVH - E Rated frequency 57Hz MSZ-AYV - E MUZ-AYV - E MUZ-AYVH - E Rated frequency 69Hz MCFZ-AWV - E MUZ-AYV - E MUZ-AYVH - E Rated frequency 69Hz Outdoor intake air Dry-bulb temperature (:) Outdoor intake air Dry-bulb temperature (:) Indoor air Dry-bulb temperature difference (degree) Indoor intake air Dry-bulb temperature (:) Indoor intake air Dry-bulb temperature (:) MSZ-A09YV - E MUZ-A09YV - E MUZ-A09YVH - E Rated frequency 75Hz MSZ-AYV - E MUZ-AYV - E MUZ-AYVH - E Rated frequency 76Hz MCFZ-AWV - E MUZ-AYV - E MUZ-AYVH - E Rated frequency 76Hz Outdoor intake air Wet-bulb temperature (:) Outdoor intake air Wet-bulb temperature (:) NOTE:The above curves are for the heating operation without any frost.

14 Capacity correction factors Correction of Cooling capacity MUZ-A09YV - E MUZ-A09YVH - E Input correction factors Correction of Cooling total input MUZ-A09YV - E MUZ-A09YVH - E Capacity correction factors Correction of Heating capacity.0 Correction of Heating total input (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor MUZ-A09YV - E MUZ-A09YVH - E Input correction factors MUZ-A09YV - E MUZ-A09YVH - E MUZ-AYV - E MUZ-AYVH - Indoor unit : MSZ-AYV - E E ( ) Correction of Cooling capacity.5 MUZ-AYV - E MUZ-AYVH - Indoor unit : MSZ-AYV - E E ( ) Correction of Cooling total input.5 MUZ-AYV - E MUZ-AYVH - Indoor unit : MSZ-AYV - E E ( ) Correction of Heating capacity.0 MUZ-AYV - E MUZ-AYVH - Indoor unit : MSZ-AYV - E E ( ) Correction of Heating total input.0 Capacity correction factors Input correction factors Capacity correction factors (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor Input correction factors MUZ-AYV - E MUZ-AYVH - E Indoor unit : MCFZ-AWV - E ( ) Correction of Cooling capacity.5 MUZ-AYV - MUZ-AYVH - Indoor unit : MCFZ-AWV - E E ( E) MUZ-AYV - MUZ-AYVH - Indoor unit : MCFZ-AWV - Correction of Cooling total input Correction of Heating capacity.5.0 E E ( E) MUZ-AYV - MUZ-AYVH - Indoor unit : MCFZ-AWV - E E ( E) Correction of Heating total input.0 Capacity correction factors Input correction factors (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT Capacity correction factors <How to operate fixed-frequency operation (Test run operation)>. Press the EMERGENCY OPERATION switch to COOL or HEAT mode (COOL : Press once, HEAT : Press twice).. Test run operation starts and continue to operate for 0 minutes.. Compressor operates at rated frequency in COOL mode or 58Hz in HEAT mode. 4. Indoor fan operates at High speed. 5. After 0 minutes, test run operation finishes and EMERGENCY OPERATION starts (Operation frequency of compressor varies). 6. To cancel test run operation (EMERGENCY OPERATION), press the EMERGENCY OPERATION switch or any button on remote controller. NOTE : The unit of pressure has been changed to MPa on the international system of units (SI unit system). The conversion factor is: (MPa [Gauge]) =0.(kgf/f [Gauge]) Input correction factors

15 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under the same temperature/humidity condition. Air flow : High speed Operational frequency : 57Hz(MUZ-A09YV, MUZ-A09YVH) 69Hz(MUZ-AYV, MUZ-AYVH) (kgf/f [Gauge]) (MPa [Gauge]) 4.4 Outdoor low pressure MUZ-A09YV - E MUZ-A09YVH - E 57Hz ( C) (%) Ambient temperature( C) Ambient humidity(%) 4 MUZ-A09YV - E MUZ-A09YVH - E (kgf/f [Gauge]) (MPa [Gauge]) 4.4 Outdoor low pressure Hz ( C) (%) Ambient temperature( C) Ambient humidity(%) 6 MUZ-AYV - E MUZ-AYVH - Indoor unit : MSZ-AYV - E E ( ) MUZ-AYV - E MUZ-AYVH - Indoor unit : MSZ-AYV - E E ( ) Dry-bulb temperature (kgf/f [Gauge]) (MPa [Gauge]) 4.4 Outdoor low pressure Hz ( C) (%) Ambient temperature( C) Ambient humidity(%) 6 Relative humidity(%) MUZ-AYV - E MUZ-AYVH - E Indoor unit : MCFZ-AWV - E ( ) MUZ-AYV - E MUZ-AYVH - E Indoor unit : MCFZ-AWV - E ( ) Outdoor unit current(a) Hz Outdoor unit current(a) Hz Outdoor unit current(a) Hz ( C) (%) Ambient temperature( C) Ambient humidity(%) ( C) (%) Ambient temperature( C) Ambient humidity(%) HEAT operation Condition indoor: Dry bulb temperature 0.0 C Wet bulb temperature 4.5 C Condition outdoor: Dry bulb temperature,7,5,0.0 C Wet bulb temperature,6,,4.5 C MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - E MUZ-AYVH - Indoor unit : MSZ-AYV - E Outdoor unit current (A) Hz Outdoor unit current (A) E ( ) 58Hz Outdoor unit current (A) ( C) (%) Ambient temperature( C) Ambient humidity(%) MUZ-AYV - E MUZ-AYVH - E Indoor unit : MCFZ-AWV - E ( ) 58Hz (:) Ambient temperature( C) (:) Ambient temperature( C) (:) Ambient temperature( C) 5

16 PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-A09YV - E : MUZ-A09YV - E MUZ-A09YVH - E CAPACITY:.5(kW) SHF:0.79 INPUT:670(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT NOTE Q : Total capacity (kw) SHF : Sensible heat factor DB : Dry-bulb temperature SHC : Sensible heat capacity (kw) INPUT : Total power input (W) WB : Wet-bulb temperature 6

17 PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-A09YV - : MUZ-A09YV - MUZ-A09YVH - E CAPACITY:.5(kW) SHF:0.79 INPUT:670(W) OUTDOOR DB(:) INDOOR INDOOR DB (:) WB (:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT NOTE Q : Total capacity (kw) SHF : Sensible heat factor DB : Dry-bulb temperature SHC : Sensible heat capacity (kw) INPUT : Total power input (W) WB : Wet-bulb temperature 7

18 PERFORMANCE DATA COOL operation Rated frequency 69Hz MSZ-AYV - MCFZ-AWV - : MUZ-AYV - MUZ-AYVH - E CAPACITY:.5(kW) SHF:0.76 INPUT:090(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT NOTE Q : Total capacity (kw) SHF : Sensible heat factor DB : Dry-bulb temperature SHC : Sensible heat capacity (kw) INPUT : Total power input (W) WB : Wet-bulb temperature 8

19 PERFORMANCE DATA COOL operation Rated frequency 69Hz MSZ-AYV - MCFZ-AWV - : MUZ-AYV - MUZ-AYVH - E CAPACITY:.5(kW) SHF:0.76 INPUT:090(W) OUTDOOR DB(:) INDOOR INDOOR DB (:) WB (:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT NOTE Q : Total capacity (kw) SHF : Sensible heat factor DB : Dry-bulb temperature SHC : Sensible heat capacity (kw) INPUT : Total power input (W) WB : Wet-bulb temperature 9

20 PERFORMANCE DATA HEAT operation MSZ-A09YV - E : MUZ-A09YV - E MUZ-A09YVH - E Rated frequency 75Hz CAPACITY:.(kW) INPUT:840(W) OUTDOOR WB(:) INDOOR DB(:) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT NOTE Q:Total capacity (kw) INPUT:Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature MSZ-AYV - E : MUZ-AYV - E MUZ-AYVH - E Rated frequency 76Hz CAPACITY:4.0(kW) INPUT:080(W) OUTDOOR WB(:) INDOOR DB(:) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT NOTE Q:Total capacity (kw) INPUT:Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature MCFZ-AWV - E : MUZ-AYV - E MUZ-AYVH - E Rated frequency 76Hz CAPACITY:.9(kW) INPUT:080(W) OUTDOOR WB(:) INDOOR DB(:) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT NOTE Q:Total capacity (kw) INPUT:Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature 0

21 9 ACTUATOR CONTROL MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - E MUZ-AYVH - E 9-. Outdoor fan motor control The AC fan motor turns ON/OFF, interlocking with the compressor. [ON] The AC fan motor turns ON 5 seconds before the compressor starts up. [OFF] The AC fan motor turns OFF 5 seconds after the compressor has stopped running. Compressor Outdoor fan motor ON OFF ON OFF 5 seconds 5 seconds 9-. R.V. coil control Heating ON Cooling OFF Dry OFF NOTE: The 4-way valve reverses for 5 seconds right before start-up of the compressor. <COOL> 5 seconds <HEAT> 5 seconds Compressor R.V.coil Outdoor fan motor ON OFF ON OFF ON OFF 9-. Relation between main sensor and actuator Sensor Discharge temperature thermistor Purpose Protection Compressor LEV Actuator Outdoor fan motor R.V.coil Indoor fan motor Defrost heater Indoor coil temperature thermistor Cooling : Coil frost prevention Heating : High pressure protection Defrost thermistor Cooling : High pressure protection Heating : Defrosting Fin temperature thermistor Protection Ambient temperature thermistor Cooling : Low ambient temperature operation Heating : Defrosting (Heater)

22 0 SERVICE FUNCTIONS MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E CHANGE IN DEFROST SETTING <JS> When the JS wire of the outdoor Inverter P.C. board is cut/ soldered, the defrost finish temperature is changed. (Refer to page.) JS Jumper wire none (cut) soldered Defrost finish temperature (Initial setting) 8: 5: MUZ-A09YVH - E MUZ-AYVH - E MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - E MUZ-AYVH - E Model (Serial number 40005~) (Serial number 4000~) (Serial number ~400050) (Serial number ~40000) TROUBLESHOOTING MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E -. Cautions on troubleshooting. Before troubleshooting, check the following: ) Check the power supply voltage. ) Check the indoor/outdoor connecting wire for mis-wiring.. Take care the following during servicing. ) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then after confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug. ) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic control P.C. board. ) When removing the electrical parts, be careful to the residual voltage of smoothing capacitor. 4) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the components. 5) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires. Lead wiring Housing point. Troubleshooting procedure ) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing on and off before starting service work. ) Before servicing check that the connector and terminal are connected properly. ) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the components for bursting and discoloration. 4) When troubleshooting, refer to the flow chart on page and check table on page 4.

23 -. Instruction of troubleshooting Start Indoor unit operates. Outdoor unit doesn't operate. Indoor unit operates. Outdoor unit doesn't operate normally. Indoor unit doesn't receive the signal from remote controller. OPERATION INDICATOR lamp on the indoor unit is flashing on and off. Outdoor unit operates in only Test Run operation. Outdoor unit doesn't operate even in Test Run operation. Unit doesn't operate normal operation in COOL or HEAT mode. Indoor unit operates, when the EMERGENCY OPERATION switch is pressed. Indoor unit doesn't operate, when the EMERGENCY OPERATION switch is pressed. Check room temperature thermistor. Refer to "Test point diagram and voltage". Refer to A "Check of inverter/ compressor" on page 6. Refer to H "Check of R.V. coil" on page 8. Refer to "Check of remote controller and receiver P.C. board".. Check indoor / outdoor connecting wire. (Check if the power is supplied to the indoor unit.). Refer to "Check of indoor electronic control P.C. board". As for indoor unit MSZ type, refer to service manual OB7. As for indoor unit MCFZ type, refer to service manual OB44. MSZ type Both lamps (Left and right) Flash on and off at 0.5-second intervals Cause: Indoor unit The horizontal vanes are not installed correctly. Left lamp Flash on and off at 0.5-second intervals Cause: Indoor/ Outdoor unit Mis-wiring or trouble of serial signal. Left lamp -time flash Cause: Indoor unit Trouble of room temperature/ indoor coil thermistor MSZ type Left lamp -time flash Cause: Indoor unit Trouble of indoor fan motor Left lamp 4-time flash Cause: Indoor unit Trouble of indoor unit control system Left lamp 5-time flash Cause: Outdoor unit Outdoor power system abnormality Left lamp 6-time flash Cause: Outdoor unit Trouble of thermistor in outdoor unit Left lamp 7-time flash Cause: Outdoor unit Trouble of outdoor control system Refer to "Check of installation of the horizontal vanes". Refer to N "How to check of mis-wiring and serial signal error (When outdoor unit doesn't work)" on page. Check room temperature thermistor and indoor coil thermistor. Refer to "Test point diagram and voltage". Refer to "Check of indoor fan motor". Replace the indoor electronic control P.C. board. Refer to A "Check of inverter/ compressor" on page 6. Refer to G "Check of outdoor thermistors" on page 8. Replace the inverter P.C. board.

24 . Troubleshooting check table <Inverter P.C. board> NOTE. The location of LED is illustrated at the right figure. Refer to page.. LED lights up during normal operation. Flashing LED Symptom LED indication Abnormal point/ Condition Detection method Checkpoint Outdoor unit does not operate 'Outdoor unit stops and restarts minutes later' is repeated Outdoor unit operates (at low frequency) Outdoor unit operates -time flash every.5 seconds NOTE: For abnormality location, refer to 'Indoor troubleshooting check table'. Refer to service manual OB7. -time flash.5 seconds OFF -time flash.5 seconds OFF 4-time flash.5 seconds OFF 5-time flash.5 seconds OFF 8-time flash.5 seconds OFF -time flash.5 seconds OFF -time flash.5 seconds OFF 4-time flash.5 seconds OFF 5-time flash.5 seconds OFF Outdoor power system Outdoor thermistors Outdoor control system Bus-bar voltage Overcurrent protection Discharge temperature overheat protection Fin temperature thermistor overheat protection High pressure protection Compressor sinusoidal current Frequency drop by current protection Frequency drop by high pressure protection Frequency drop by defrosting in COOL mode Frequency drop by discharge temperature protection Outdoor thermistors When compressor has stopped by overcurrent protection within minute times in a row after compressor start-up, unit stops. When discharge temperature thermistor, fin temperature thermistor or defrost thermistor shorts or opens during compressor running, compressor stops and restarts minutes later. When nonvolatile memory data cannot be read properly, compressor stops and restarts minutes later. When the bus-bar voltage of inverter cannot be detected normally. When A(MUZ-A09YV, MUZ-A09YVH)/ 0A(MUZ-AYV, MUZ-AYVH) current flows into power transistor module, compressor stops and restarts minutes later. When discharge temperature thermistor exceeds 6:, compressor stops. Compressor can restart if discharge temperature thermistor reads 00: or less minutes later. When temperature at heat sink exceeds 8: or temperature of inverter P.C. board exceeds 79:, compressor stops and restarts minutes later. When indoor coil thermistor exceeds 70:. When the defrost thermistor exceeds 70: in COOL mode. When the waveform of compressor current is distorted. When current from power outlet exceeds 7A(MUZ-A09YV, MUZ-A09YVH)/ 9A(MUZ-AYV, MUZ-AYVH), compressor frequency lowers. When indoor coil thermistor exceeds 55: in HEAT mode, compressor frequency lowers. When indoor coil thermistor reads 6: or less in COOL mode, compressor frequency lowers. When discharge temperature thermistor exceeds 0:, compressor frequency lowers. When ambient temperature thermistor shorts or opens during compressor running. Check stop valve. Reconnect connectors. Refer to A "How to check inverter/ compressor" on page 6. Refer to G "Check of outdoor thermistors" on page 8. Replace inverter P.C. board after check of A "How to check inverter/ compressor" on page 6 and G "Check of outdoor thermistors" on page 8. Refer to A "How to check inverter/ compressor" on page 6. Check stop valve. Reconnect connectors. Refer to A "How to check inverter/ compressor" on page 6. Check refrigerant circuit and refrigerant amount. Refer to G "Check of outdoor thermistors" on page 8. Refer to L "Check of LEV" on page 0. Check around outdoor unit. Check outdoor unit air passage. Refer to I "Check of outdoor fan motor" on page 9. Check refrigerant circuit and refrigerant amount. Check stop valve. Check stop valve. Reconnect connector. Refer to A "How to check inverter/ compressor" on page 6. The unit is normal, but check the following. Check if indoor filters are clogged. Check if refrigerant is short. Check if indoor/outdoor unit air circulation is short cycled. Refer to G "Check of outdoor thermistors" on page time flash.5 seconds OFF 8-time flash.5 seconds OFF 9-time flash.5 seconds OFF Low discharge temperature protection PAM protection PAM: Pulse Amplitude Modulation Inverter check mode When discharge temperature has been 40: or less for 0 minutes. When the overcurrent flows into IGBT(Insulated Gate Bipolar transistor : TR8) or when the bus-bar voltage reaches 00V or more, PAM stops and restarts. When the connector of compressor is disconnected, inverter check mode starts. Refer to L "Check of LEV" on page 0. Check refrigerant circuit and refrigerant amount. This is not malfunction. PAM protection will be activated in the following cases; Instantaneous power voltage drop (Short time power failure) When the power supply voltage is high. Check if the connector is correctly connected. Refer to A "How to check inverter/ compressor" on page 6. The flashing frequency shows the number of times the LED blinks after every.5-second OFF. (Example) When the flashing frequency is. 0.5-second ON 0.5-second ON ON OFF.5-second OFF.5-second OFF 4

25 . Trouble criterion of main parts MUZ-A09YV - E MUZ-AYV - E MUZ-A09YVH - MUZ-AYVH - E Part name Defrost thermistor (RT6) Ambient temperature thermistor(rt65) Discharge temperature thermistor(rt6) Fin temperature thermistor(rt64) Compressor(MC) Check method and criterion Measure the resistance with a tester. (Part temperature 5 C ~ 40 C) rmal 5 k" ~ 65 k" Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up. (Part temperature 0 C ~ 40 C) rmal 50 k" ~ 600 k" rmal 0 k" ~ 80 k" Abnormal Open or short-circuit Abnormal Open or short-circuit Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up. (Part temperature 0 C ~ 40 C) Abnormal Open or short-circuit Measure the resistance between the terminals with a tester. (Part temperature 5 C ~ 40 C) rmal U-V U-W V-W MUZ-A09YV MUZ-A09YVH. " ~.66" MUZ-AYV MUZ-AYVH 0.4 " ~ 0.5 " Abnormal Open or short-circuit Figure WHT RED BLK W V U Outdoor fan motor(mf) INNER FUSE 0 5i 5 : CUT OFF R.V. coil(s4) Measure the resistance between the terminals with a tester. (Part temperature 5 C ~ 40 C) Color of lead wire WHT BLK BLK RED rmal 99 " ~ 74 " 4 " ~ 04 " Measure the resistance between the terminals with a tester. (Part temperature 5 C ~ 40 C) rmal.90 k" ~.9 k" Abnormal Open or short-circuit Abnormal Open or short-circuit FUSE BLK RED WHT LEV(Expansion valve) Measure the resistance with a tester. (Part temperature : 5 C ~ 40 C) Color of lead wire rmal WHT RED RED ORN 9 " ~ 50 " YLW BRN BRN BLU Abnormal Open or short-circuit WHT6 RED ORN4 LEV YLW5 BRN BLU Defrost heater(h) Measure the resistance with a tester. (Part temperature -5 C ~ 40 C) rmal 4 " ~ 47 " Abnormal Open or short-circuit 5

26 When OPERATION INDICATOR lamp flashes 5-time. Outdoor unit does not operate. A How to check inverter/ compressor Disconnect the connector (CN6) between compressor and power transistor module (IPM). Check the voltage between terminals. See B Check of open phase on page 6. Are the voltages balanced? Check the resistance of power transistor module. See C 'Check of power transistor module' on page 6. Check the compressor. See D Check of compressor on page 7. Is the resistance infinite? (0~several ") Replace the inverter P.C. board. B Check of open phase Replace the inverter P.C. board and compressor. With the connector between compressor and power transistor module disconnected, activate the inverter and check if the inverter is normal by measuring the balance of voltage between terminals. Output voltage [V] 5V << Operation method>> Start cooling or heating operation by pressing the EMERGENCY OPERATION switch on the indoor unit. (test-run mode : refer to page 4) <<Measurement point>> at points BLK (U)-WHT (V) BLK (U)-RED (W) WHT(V)-RED (W) w Measure AC voltage between the lead wires at points. Inverter P.C. board LED Flashing NOTE. Output voltage varies according to power supply voltage.. Measure the voltage by analog type tester.. During this check, LED of inverter P.C. board flashes 9 times. 9-time flash.5-second OFF C Check of power transistor module Disconnect the connector (CN6) between compressor and power transistor module, and measure the resistance between terminals on the power transistor module. <<Measurement point>> at 6 points BLK-WHT, WHT-BLK BLK-RED, RED-BLK WHT-RED, RED-WHT ohmmeter indication " X rmal (infinite) <<Judgement>> Infinite ["] rmal 0~dozens of Abnormal (short) " X Abnormal (0~dozens of ") 6