Mitsubishi Electric MXZ-160VA-A Manual de servicio

TECHNICAL & SERVICE MANUALSPLIT-TYPE, HEAT PUMP AIR CONDITIONERSCONTENTS1. SAFETY PRECAUTION ······································22. OVERVIEW OF

10 (3) When installing multiple outdoor units Leave 10 mm space or more between the units. ● Obstacles at rear only (Fig. 2-10) ● Obstacles at rear

112-5. SIMPLIFIED PIPING SYSTEMPiping connection sizeLiquid (mm)Gas (mm)W9.52W15.88The piping connection size differs according to the type and capaci

123 SPECIFICATIONSkWWkW*/min (CFM)dBdBmm (in.)mm (in.)mm (in.)kg (lbs)kg (lbs)LmmmmExternal finish Refrigerant control Compressor Model Motor output S

134-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS4-1-1. Method for obtaining system cooling and heating capacity:To obtain the system cooling an

144-2. CORRECTING COOLING AND HEATING CAPACITY4-2-1. Correcting Changes in Air Conditions(1) The performance curve charts (Figure 4-1, 4-2, 4-3, 4-4)

154-2-2. Correcting Capacity for Changes in the Length of Refrigerant PipingTo obtain the ratio (and the corrected piping length) of the outdoor units

161.5m1mMICROPHONEUNITGROUND4-3. NOISE CRITERION CURVES90807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETHRESHOLD OFHEARING FORCONTINUOU

175 OUTLINES AND DIMENSIONSMXZ-8B140VA MXZ-8B140YA MXZ-8B160VA MXZ-8B160YA unit : mmOverOverOverOverLess thanPiping and wiring connectionscan b

186 WIRING DIAGRAMMXZ-8B140VA MXZ-8B160VAPower turned onLED on the controller board display the operation and inspection status as follows.If LED do

19MXZ-8B140YA MXZ-8B160YAPower turned onLED on the controller board display the operation and inspection status as follows.If LED does not light, it

21 SAFETY PRECAUTIONCautions for units utilizing refrigerant R410A1-1. ALWAYS OBSERVE FOR SAFETYUse new refrigerant pipes.Charge refrigerant from liqu

207NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTIONREFRIGERANT SYSTEM DIAGRAM MXZ-8B140VA MXZ-8B140YA MXZ-8B160VA MXZ-8B160YAPiping connection size

21Indoor unit typePipe size (mm)(kW)LiquidGas22:6.35:9.5225:6.35:9.5235:6.35:9.5250:6.35:12.760:6.35:15.88 *71:9.52:15.8880:9.52:15.8815:6.35:9.5218:6

228 TROUBLESHOOTING<Error code display by self-diagnosis and actions to be taken for service (summary)>Present and past error codes are logged a

238-2. CHECK POINTS FOR TEST RUN8-2-1. Before test run● Turn on the main power switch more than 12 hours before starting operation. Starting operatio

24During the test run set with the outdoor unit, operation on/off or operation mode change cannot be performed by the remote controller, and the opera

258-3. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is put on>(Note 1) Refer to indoor unit section for code P and code E

26Error CodeAbnormal point and detection method Judgment and actionEb(6845)Miswiring of indoor–branch box/branch box–outdoor unit connecting wire (c

27Error CodeAbnormal point and detection method Judgment and actionCaseFaulty connection of LEVFor the connection of P100 indoor unit(s), the connecti

28Error CodeAbnormal point and detection method Judgment and actionU1(1302)(1) High-pressure switch (63H) operatedAbnormal if high-pressure switch 63H

29U2(1102)(1) High discharging temperature Abnormal if compressor temperature thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes. Abno

3GravimeterUnit[3] Service tools(1) Use the below service tools as exclusive tools for R410A refrigerant.[2] Additional refrigerant chargeWhen chargin

30ThermistorsOpen detection Short detectionSymbolNameTH3TH7TH8Branch box unitTH-A~E(Room A-E)– 40 or below– 40 or below– 27 or below90 or above90

31Error CodeAbnormal point and detection method Judgment and actionCaseUF(4100)Compressor overcurrent interruption (When compressor locked)Abnormal i

32Error CodeAbnormal point and detection method Judgment and actionCaseE0(No display)Remote controller communication error (Signal receiving error)(1)

33Error CodeAbnormal point and detection method Judgment and actionCaseE9(6841)Indoor - branch box/branch box - outdoor unit communication error (Tra

34PhenomenaFactorCountermeasure2. Remote controller display operates normally and the unit performs heating operation, however, the capacity cannot be

35CN51X543 YL1 : Error display lampL2 : Compressor operation lampX, Y : Relay (Coil standard of 0.9W or less for DC 12V) CN3SXYSW1SW

368-6. HOW TO CHECK THE PARTSMXZ-8B140VA MXZ-8B140YA MXZ-8B160VA MXZ-8B160YAParts nameCheck pointsDisconnect the connector then measure the resi

37Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1, 2

38<Thermistor feature chart>Low temperature thermistorsPipe temperature thermistor <Liquid> (TH3)Pipe temperature thermistor <Cond.>

398-7. TEST POINT DIAGRAM8-7-1. Outdoor controller circuit boardMXZ-8B140VA MXZ-8B140YA MXZ-8B160VA MXZ-8B160YA<CAUTION> TEST POINT 1 is

4(2) Cautions for refrigerant piping workNew refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R4

408-7-2. Outdoor noise filter circuit boardMXZ-8B140YAMXZ-8B160YALI1, LI2, LI3, NIPOWER SUPPLYLI1-LI2/LI-LI3/LI3-LI1 : AC380/400/415V inputLI1-NI/LI2-

418-7-3. Outdoor power circuit boardMXZ-8B140VAMXZ-8B160VACNAC1, CNAC2220-240 V ACConnect to the out-door controller circuit board (CNAC)NI, LIVoltage

42Outdoor power circuit boardMXZ-8B140YAMXZ-8B160YACN5Detection of primary current(Connect to the outdoor noise filter circuit board (CNCT))CN4Connect

438-7-4. Outdoor converter circuit boardMXZ-8B140YAMXZ-8B160YAL1-A2, L2-A2, L3-A2Connect to the ACL1, ACL2, ACL3CN7Connect to the outdoor power circui

44Forced defrost StartNormalNormal—When compressor is operating in heating operation.*Abnormal history clearNo functionSelf-diagnosis(Indoor unit sele

45SW6SW9Model selectionSwitching function of defrosting prohibited timeDuring the FAN or COOL mode, and thermo - OFF in heating operation, set the ope

46<Outdoor unit operation monitor function>Digital indicator LED3 displays 2 digit number or code to inform operation condition and the meaning

47SW2 setting1ON23456Display detailExplanation for display UnitPipe temperature / Liquid (TH3) – 40~90– 40~90(When the coil thermistor detects 0: o

48SW2 setting1ON23456Display detailExplanation for displayUnitPipe temperature / Liquid (TH3) on erroroccurring– 40~90– 40~90(When the coil thermistor

49SW2 setting1ON23456Display detailExplanation for displayUnitCapacity setting displayDisplayed as an outdoor capacity code.Codedisplay1ON234561ON2345

52 OVERVIEW OF UNITS2-1. CONSTRUCTION OF SYSTEMMXZ-8B140YA/160YA6HPMXZ-8B140VA/160VA5HP14.016.015.518.0R410AIndoor unit that can be connectedBranch bo

501ON23456°CDischarge superheat. SHd0~2550~255(When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns

51SW2 settingDisplay detailExplanation for displayUnitCode displayError postponement code history (2)of outdoor unitPostponement code displayBlinking:

52SW2 settingDisplay detailExplanation for displayUnit:Indoor pipe temperature / Liquid on error occurring– 39~88– 39~88(When the temperature is 0 °C

53SW2 settingDisplay detailExplanation for display UnitThermostat-on time until error stops0~9990~999(When it is 100 minutes or more, hundreds digit,

548-9. SELECTING FUNCTIONS USING THE REMOTE CONTROLLEREach function can be set according to necessity using the remote controller. The setting of func

55 Warning:Be sure to connect the power supply cords and con-necting wires for the indoor units, outdoor units, branch boxes directly to the units (no

56TB3ES1S2S3TB3DS1S2S3S1S2S3S1S2S3S1S2S3S1S2S3S1S2S3S1S2S3S1S2S3S1S2S3TB3CNTB2BLTB3ATB3B(A)E(A)(B)(C)(D)(D)Fig. 9-2Notes:Notes:• When • When wiring a

5710 WIRING SPECIFICATIONS Warning:In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design

58OCBC (3- branch type)AB CICRCICRCICRCOCBC(3- branch type)ABCICRCICRCRCICBC(3- branch type)ABCICRCICRCRCICOC11-2-1. Only 3-branch type 11-2-3. 2-bran

59OCBC (3- branch type)AB CICRCIC ICRC11-3-1. Group operation by single remote controller• Plural indoor units cannot be operated by a single remote c

6Indoor unit (Ceiling concealed type)Indoor unit (Wall mounted type)Outdoor unitBranch Box2-2. SYSTEM OUTLINEThe additional connection of the Branch B

6012 REFRIGERANT PIPING TASK12-1. ADDITIONAL REFRIGERANT CHARGELIh2b2b1a6a5a4a3a2h3h1Ha1a7 a8Outdoor unitBranch boxIndoor unitPermissibl

61Total piping length(b1+ b2 + a1+ a2 + a3 + a4 + a5 + a6 + a7 + a8)If connecting an indoor unit with :9.52 liquid pipes (model number 71 or more for

62Indoor unitThe smallestroomThe secondsmallest roomOutdoor unitVentilation apparatusBranch boxIndoor unitBranch boxOpeningWallOutdoor unit(situation

6313 DISASSEMBLY PROCEDUREOPERATING PROCEDUREPHOTOS & ILLUSTRATION 1. Removing the service panel and top panel (1) Remove 3 service panel fixing

64OPERATING PROCEDURE PHOTOSPhoto 5 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) (1) Remove the service panel. (See Photo 1) (2) R

65 9. Removing solenoid valve coil <Bypass valve> (SV1) and bypass valve (1) Remove the service panel. (See Photo 1) (2) Remove the top panel

11. Removing the high pressure switch (63H) and low pres-sure switch (63L) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating15 1500 1700 0.80 0.58 3.7 2.7 3.5 2.5 3.4 2.416 1600 1800 0.84 0.62 3.

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/220V Current(A)/230V Current(A)/240VTotal capacity ofindoor

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/220V Current(A)/230V Current(A)/240VTotal capacity ofindoor

72-3. TYPICAL COMBINATION EXAMPLEBranch box is located INSIDE of condominiumBranch box(Inside)Installing branch box indoorsOnly 1 piping is required b

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating15 1500 1700 0.80 0.58 3.7 2.7 3.5 2.5 3.4 2.416 1600 1900 0.84 0.65 3.

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/220V Current(A)/230V Current(A)/240VTotal capacity ofindoor

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/220V Current(A)/230V Current(A)/240VTotal capacity ofindoor

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating15 1500 1700 0.80 0.58 1.2 0.9 1.2 0.8 1.1 0.816 1600 1800 0.84 0.62 1.

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/380V Current(A)/400V Current(A)/415VTotal capacity ofindoor

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/380V Current(A)/400V Current(A)/415VTotal capacity ofindoor

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating15 1500 1700 0.80 0.58 1.2 0.9 1.2 0.8 1.1 0.816 1600 1900 0.84 0.65 1.

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/380V Current(A)/400V Current(A)/415VTotal capacity ofindoor

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling HeatingCurrent(A)/380V Current(A)/400V Current(A)/415VTotal capacity ofindoor

82-4. INSTALLATION2-4-1. Outdoor unit installation location For best performance, select proper position. ● Avoid places where combustible gas may b

9 (2) When installing a single outdoor unit Minimum dimensions are as follows, except for Max., meaning Maximum dimensions, indicated. Refer to the