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Toshiba MMU-AP0091H service manual Low outside temperature 15C or less Criterion, OFF SV3E

Models: MMU-AP0091H

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Page 55

In low outside temperature (15°C or less: Criterion)

Header unit

Follower unit

FM

	TE1	Sensor
	Main heat exchanger	Sensor
		TO
	Main heat exchanger *
	SV12
PMV1	PMV2
	PMV3	4-Way valve	OFF
			OFF

	SV11
	SV5		TS1
			Pd sensor
	Pd sensor		TS2
	Pd sensor
TL	SV6	SV2

		OS
	SV3D
Liquid	SV41	SV42
tank	SV41	SV42

HP				HP
				Accumulator
TD1			SV3C	TD2
TD1				TD2
1	(Inverter)			2
Compressor	(Inverter)	TK3		Compressor (Inverter)
		TK1	TK2
			Oil tank
SV3E		TK4
SV3E
		SV3A
				SV3B

FM

	TE1	Sensor
	Main heat exchanger	Sensor
		TO
	Main heat exchanger *
	SV12
PMV1	PMV2
	PMV3	4-Way valve	OFF
			OFF

	SV11
	SV5		TS1
			Pd sensor
	Pd sensor		TS2
	Pd sensor
TL	SV6	SV2

OS

SV3D

Liquid	SV41				SV42
tank	SV41				SV42
	HP				HP
					Accumulator
	TD1			SV3C	TD2
	TD1				TD2
	1	(Inverter)			2
	Compressor	(Inverter)	TK3		Compressor (Inverter)
			TK1	TK2
				Oil tank
	SV3E		TK4
	SV3E
			SV3A
					SV3B

Suction gas pipe

Discharge gas pipe

Liquid pipe

FS unit

SVS

SVD

SVDD SVSS

SVS

SVD

SVDD SVSS

SVS

SVD

SVDD SVSS

SVS

SVD

SVDD SVSS

Indoor unit

ST

ST

ST

ST

	PMV	TC1	PMV	TC1
	TC2	TC1	TC2	TC1
	TC2		TC2
	TCJ		TCJ

Cooling

Cooling

High pressure gas or condensed liquid refrigerant

	ST	ST	ST	ST
	PMV	TC1	PMV	TC1
	TC2	TC1	TC2	TC1
	TC2		TC2
	TCJ		TCJ
		Cooling		Stop

Low pressure gas refrigerant (Refrigerant recovery line)

Low pressure gas refrigerant

High pressure refrigerant (Push-in circuit)

	Outdoor unit

4-way valve	OFF	SV3A	OFF

SV4 (n)	(Note 1)	SV3B	OFF

SV5	ON	SV3C	OFF

SV6	Control	SV3D	Control

SV11	OFF	SV3E	ON

SV12	OFF	PMV1, 2	Control

Outdoor fan	Control	PMV3	Close

(Note 1) SV4 on the stopped compressor is ON.

	Flow selector/Indoor unit

Cooling thermo.-ON			Stop

SVD	OFF	SVD	OFF

SVS	ON	SVS	OFF

SVDD	OFF	SVDD	OFF

SVSS	ON	SVSS	ON

PMV	Control	PMV	Close

55

Image 55

Toshiba MMU-AP0091H service manual Low outside temperature 15C or less Criterion, OFF SV3E, Cooling thermo.-ON Stop

Contents

MML-AP0071H, AP0091H, AP0121H MML-AP0151H, AP0181H, AP0241H MMD-AP0181H, AP0241H, AP0271H MMD-AP0361H, AP0481HMMD-AP0071SPH, AP0091SPH, AP0121SPH MMC-AP0151H, AP0181H, AP0241H MMC-AP0271H, AP0361H, AP0481HCheck of Concentration Limit Contents Indication Explanation Explanation of indicationsExplanation of illustrated marks Confirmation of warning label on the main unitFor spare parts, use those specified ∗ ∗ For details, refer to the parts listNever recover the refrigerant into the outdoor unit Do not modify the productsLimit even if the refrigerant leaks Check the following items after reinstallationMetal section Earth position SideTools Safety Caution Concerned to New RefrigerantNew Refrigerant R410A Pipe MaterialsCylinder with siphon Cylinder without siphon Recharge of RefrigerantEnvironmental concern 4mm-hexagonal wrench is requiredOperation mode Outline Operation modeBranching joints and headers Component Multi Using High-efficiency Refrigerant R410AOutdoor units Combination of outdoor unitsRBM-Y1801FE Flow selector units FS unitIndoor units RBM-Y1121FEMMD-AP0241H Remote controllers Air Discharge Cassette Type IndoorUnit WayIndoor control P.C. board AP0241WH, AP0271WH, AP0301WH AP0071WH, AP0091WH, AP0121WHAP0481WH AP0151WH AP0181WHIndication Compact typeAP0071YH, AP0091YH, AP0121YH ColorOption Symbol Parts nameModel MMU-AP0151SH, AP0181SH, AP0241SH Network adapterWay Air Symbol Parts nameAP0241BH ConcealedDuct Standard Type AP0481BH, AP0561BHMMD-AP0181H, AP0241H, AP0271H, AP0361H Symbol Parts nameConcealed Duct High Static Pressure Type ModelAP0151H, AP0181H UnderCeiling Type AP0241H, AP0271H, AP0361HAP0121H, AP0151H, AP0181H, AP0241H High Wall TypeModel MMK-AP0071H, AP0091H Model MMK-AP0072H AP0122HAP0092H Color Floor Standing Cabinet TypeAP0151H, AP0181H, AP0241H Model MML-AP0071H, AP0091H, AP0121HColor indication Floor Standing Concealed TypeModel MML-AP0071BH, AP0091BH, AP0121BH AP0151BH, AP0181BH, AP0241BHColor Symbol Parts nameAP0241H, AP0271H, AP0361H, AP0481H, AP0561H Model MMF-AP0151H, AP0181HColor indication Model MMD-AP0071SPHAP0091SPH, AP0121SPH,AP0151SPH For undoor unitParts layout Outdoor UnitModel MMY-MAP0801FT8 MAP1001FT8, MAP1201FT8Model RBM-Y1122FE, Y1802FE, Y2802FE Flow Selector Unit FSWay Air Discharge Cassette Type Indoor UnitConcealed Duct Standard Type Way Air Discharge Cassette Compact type TypeHigh Wall Type Concealed Duct High Static Pressure TypeSlim Duct Type Under Ceiling TypeFloor Standing Concealed Type Floor Standing Cabinet TypeFloor Standing Type MAP0802FT8 MAP1002FT8 MAP1202FT8 Heat Recovery ModelOutdoor Control Unit Flow Selector Unit FS UnitFront side Rear side Parts Layout in Outdoor UnitIndoor Unit Name of Each PartSold Separately Parts Outdoor Unit Parts Name of Remote ControllerDisplay section Stop Correct UsageOperation section PreparationHow to stop louver swinging Adjustment of Wind DirectionHow to set up the air direction How to start louvre swingingAdjustment of air direction upward/downward How to set up the air flow directionHow to start swinging How to stop swingingSetup of air direction and swinging Right/Left air direction adjustmentAdjustment of air Flow direction Upwards/Downwards Adjustment of air Flow direction rightwards/leftwardsTimer operation Timer OperationCancel of timer operation Maintenance InstallationModel 2H series Cleaning the air inlet grilleCleaning of main unit / remote controller High Wall Type Model 1H seriesAir Conditioner Operations and Performance When the Following Symptoms are Found Re-InstallationAir conditioner operating conditions Procedure Description Confirmation of error historyConfirmation and check Model MMY-MAP0802FT8, MAP1002FT8, MAP1202FT8 Inverter Unit 8, 10, 12HPFunctional part name Functional outline Explanation of Functional PartsOperation mode Outline Operation modeSvss SVDSVS SvddTC2 TC1TCJ Selection of operation mode Refrigerant Piping Systematic Diagram in SystemON-OFF list of Flow Selector Unit FS Unit valve Flow selector/Indoor unit Cooling thermo.-ON Stop High outside temperature 10C or more CriterionAll cooling operation Operation of cooling only Outdoor unitFlow selector/Indoor unit Low outside temperature 15C or less CriterionOFF SV3E Cooling thermo.-ON StopHeating thermo.-OFF All heating operation Operation of heating onlySV3B SV5 OFF SV3C SV6 Flow selector/Indoor unit Heating thermo.-ONHeating thermo.-ON Mainly Cooling, Partly Heating OperationOutdoor unit Flow selector/Indoor unit Mainly Heating, Partly Cooling OperationCooling thermo.-ON Heating thermo.-ON Stop Flow selector/Indoor unit Cooling thermo.-ON Others DefrostAllcooling All heating Control SpecificationsOutline of specifications Remarks Remote controller Control outline CommandTC1 Reset conditionsTCB-AX21E Central control mode Central control mode 1 Cannot operateCentral control mode 4 Cannot select mode Operation explanation and applied data, etc Remarks Operation Start/Operation EndOil SV2 Operation explanation and applied data, etc Remarks Operation explanation and applied data, etc Remarks Ipdu PMV Pulse Motor Valve for outdoor unit Cooling operation in low ambient temperaturesOther cautions Release control listReceived oil Oil equation control schematic diagramHeader outdoor unit MMY-MAP1202FT8 Unit to send oil Follower outdoor unit MMY-MAP1202FT8 Unit toEvery pushing Procedure Execute the setup operation while the unit stopsHEAT, Heat → Cool Description At shipmentItem code Indoor unit capacityDescription How to Set Up the Cooling Only Indoor UnitSetup data Cooling Only setup Heat pumpPush Vent + Test buttons simultaneously for Seconds or more Setting When Connecting Multiple Indoor Units to a FS unitUsage/Features How to set up Item codeSVD OFF Svdd SVS Case of not setting 01 to Item code 0ESVS OFF SVD OFFRemote location ON/OFF control box TCB-IFCB-4E Wiring and setupWiring diagram using remote control interface TCB-IFCB-4E Applied Control in Indoor UnitOperation Ventilating fan control from remote controllerWiring FunctionLeaving-ON prevention control Using the timer timeUsing the setup temp Button, set to the setup dataOutdoor fan High Static Pressure Shift Applied Control in Outdoor UnitFunction Switch No Bit Connector No Used control P.C. board Outdoor unit interface P.C. board Connector position detailOutdoor unit interface P.C. board Power Peak-cut Control StandardSetup when Power peak-cut control requested Relay contact capacity of operation portCN513 Power Peak-cut Control ExpansionSetup at power peak-cut control expansion request SW1 SW2External master ON/OFF control Input signal OperationTerminal Input signal Operation Snowfall Fan ControlNight operation sound Capacity Reduction dB a Operation Mode Selection ControlNight Operation Control Cool OFFCase that a center control Procedure and Summary of Test OperationMain check items for electric wiring Check Items before Test OperationAdditional amount of refrigerant Check listAdditional amount of refrigerant by pipe length Corrective amount of refrigerant by system capacityCheck on outdoor unit Check at Main Power-ONAddress Setup Address Setup and Check ProcedureAddress setup procedure Address Setup ProcedureLine address switch on outdoor interface P.C. board Group address Turn on the power Wiring example in 2 linesOperation procedure Push SET buttonButton to Operation procedure Confirm the changed contents Using Unit + SWING/FIX buttons, select the line AddressUsing the setup temp UsingDisplayed. Only fan of the selected indoor unit operates Push SET button to determine the setup dataPush Test button to finish the procedure EndSW01 SW02 SW03 SW04 Setup procedureCause Countermeasures Troubleshooting in Test OperationCheck Code is Displayed on the Remote Controller Check codeDisplay Remote SegmentCause Countermeasures Status Cause CountermeasuresStatus Incorrect example Incorrect wiring example FigRemote Header unit Incorrect example Controller status Segment displayTest operation start/stop operation Test Operation CheckFan Operation Check Cooling/Heating Test Operation CheckTest operation from outdoor unit Wireless remote controllerTurn OFF the power to the air conditioner Button on the wireless remote controllerTest cooling operation Test heating operation Procedure Description100 Test operation101 102 Service Support FunctionFunction Outline Setup/Release Segment display Function to Start/Stop ON/OFF Indoor Unit from Outdoor Unit103 Operation procedureAll cooling test operation function All heating test operation function104 Batch start/stop ON/OFF functionSW01 SW02 SW03 Units to be operated 105Section a Error Clearing FunctionError clearing in indoor unit MethodClearing from the interface P.C. board Clearing of error check code by power reset107 Distinction procedure Remote Controller Distinction Function108 Operation Heater Solenoid Valve Forced Open/Close Function in Outdoor UnitClear 110Fan step Fan Operation Check in Outdoor Unit111 SW01 SW02 SW03112 ReleaseCase to operate the fan in the erroneous outdoor unit only Case to operate the fans in all the normal outdoor units113 Manual Adjustment Function of Outside Temp to SensorService support function list Function contentsIndoor Fan Operation Check Function Indoor Fan Only Operating Mode114 Calling of display screen Monitor Function of Remote Controller SwitchContents Procedure116 Troubleshooting SummaryBefore troubleshooting Troubleshooting procedureCheck Method Check code list117 118 Device Error detected by TCC-LINK central control device119 Main Outdoor 7-segment display Sensor block displayNew check code Confirmation and check Troubleshooting by Check Display on Remote ControllerCase of wired remote controller RBC-AMT31E Confirmation of error history122 Case of central remote controller TCB-SC642TLECase of AI-NET central remote controller Check code name Error detection condition Check item position124 Check codeConvenient functions Error detection condition Check item positionSetup method of No. capacity-over detection 125126 Status Error detection condition Check item positionOutdoor 7-segment display 127 Detected Check code name 128Check all the outdoor units in the corresponding line Error detection condition129 Status130 Check code Detected Main Outdoor 7-segment display 131Remote Central control Controller Check code Name 132Heating 133134 Check code Status Error detection Check item positionName Condition Sub-code E 135Sub-code C Sub-code DController 136 Error detected by TCC-LINK central control deviceError detected by AI-NET central control device Error detection Check item position137 How to check inverter outputHow to check resistance of compressor winding How to check the outdoor fan motor138 Diagnosis Procedure for Each Check CodeDetected at outdoor side 139E06 E07140 E19 141E16 E18 / 97/99142 143 Indoor TCJ sensor errorIndoor TC2 sensor error F03 Indoor TC1 sensor error144 145 146 H02 / 1d Compressor error LockF31 / 1C H01 / 1FH14 Compressor 2 case thermo operation 147H06 Low-pressure protective operation Clogging check for SV3E valve 148Low oil level protection Leakage check for SV3C valve149 150 TK3 temperature detective circuit errorL06 151L05 L03152 L28 L18 / 8A Flow selector unit system error153 L20L30 / b6 L31 Extended IC errorP01 Indoor fan motor error 154High-pressure SW P05 / AF Open phase, negative phase155 P04 Actuation156 P07 / 1C Heat sink overheat errorP10 / 0b Indoor overflow error Indoor fan motor errorGas leak detection P13 Outdoor liquid back detection error 1. PMV1/PMV2 error157 P15 / AETD condition Sub-code P17 / bb Discharge temp TD2 error158 P15 / AE Gas leak detectionJudgment criteria P19 Way valve operation error159 P20 High-pressure protective operation160 P22 / 1A Outdoor fan Ipdu errorP29 Compressor position P26 Tr short-circuit protection errorDetective circuit error 161162 163 How to read the check display Segment displaySegment Display Function Segment display on the outdoor unit Interface P.C. board164 SW01 SW02 SW03 Display contents165 SW03 SW02 Indoor address Segment display a 166Segment display A, B Sensor CharacteristicsTemperature sensor characteristics Outdoor Unit168 Pressure sensor characteristicsLead wire color Indoor UnitMPa Kg/cm² Pd sensor characteristicsPressure Sensor Output Check 169170 Ps sensor characteristics171 Flow Selector Unit FS UnitMay become 172Detection Flow Almost normal Cooled 173 ReferenceRefrigerant Series Indoor Controller Block DiagramWired remote controller Weekly timerWeekly timer Wired remote controller Up to 2 units175 Slim DuctType 176Series 177 178 Wired remote controllerSlimDuctType 179 MCC-1402 Indoor P.C. BoardType CHK 181Eeprom DispMCC-1431-01 Flow Selector Unit P.C. Board182 DC12V COM Optional Connector Specifications of Indoor P.C. BoardFunction Connector Pin Specifications Remarks 183RMV 184SV3D SV3E Uart185 Inverter P.C. board MCC-1502 IPDU1, IPDU2186 Power supply P.C. board for fan MCC-1439187 Part type Exchange contentsOutline Before Backup OperationCompressor Backup Setup ProcedureSet up procedure for the malfunctioning outdoor unit Backup Setup for Outdoor Unit189 190 Operation procedureDisplay example Segment display oil level resultsSet up the malfunctioning outdoor unit as follows Refrigerant Recovery in the Malfunctioning Outdoor UnitBefore Refrigerant Recovery Operation Refrigerant Recovery Procedure192 Select an outdoor unit for pressure adjustment as followsSet up all other outdoor units as follows Setup for outdoor unit for adjustment of pressureSet up the unit selected as the header unit as follows Refrigerant recovery procedure backup193 194 Setup for header unit195 Refrigerant amount to be recovered = 37.5 28.0 = 9.5 kgSystem Combination of outdoor units Refrigerant amount 196 Process after RepairCheck code Corresponding unit Trouble by leakage197 Unit issuing Check code to be detected Phenomena198 Never recover the refrigerant into outdoor unit Compressor Replacing Procedure Outline199 200 Replacing CompressorExchanging a compressor Removal of defective compressor201 Color check of oil in the defective compressorMeasurement of oil amount in the normal compressor Adjustment of oil amount in the service compressor202 Full opening of PMV1, PMV2 Installation of compressorVacuuming Case of single outdoor system Case of multiple outdoor unit systemsCheck items Position Procedure Procedure to Identify the Cause of Compressor Oil Shortage204 Nitrogen 205Pressure Disassembling Reassembly206 RemarksPart to be Work procedure Remarks207 Fan motorDisassembling Example 208Heat exchanger Right 209 Reassembly and cautionsExchange of service P.C. board Inverter assembly210 211 SV3C SV3A SV3B Work procedureTemperature Front side of air conditioner sensor posi 212213 Temperature Rear side of air conditionerUsed positions of SUS fixing band Total 5 positions 214 AssemblyPull the accumulator upwards 215216 Exchange procedure Exchange of P.C. Board for Indoor Service217 Remote controller operation diagram Procedure 1 Readout setup contents from Eeprom219 Procedure 2 Exchange of P.C. board for serviceEeprom layout Procedure 3 Writing-in of setup contents to Eeprom221 Type Indoor unit capacity Item codePart name Procedure How to Check Inverter OutputHow to Check Outdoor Fan Motor How to check resistance or compressor windingMCC-1439 Front View How to Check Fan Power Supply P.C. Board and Fan IpduHow to check fan power supply P.C. board MCC-1439 How to check fan Ipdu224 Interface Board Replacement ProcedureReplacement steps Dip Switch Setting contents225 Comp-IPDU Board Replacement Procedure ManualComp-IPDU No SW801 Bit COMP-IPDU No.1 226COMP-IPDU No.2 227 Inverter Assembly ConfigurationToshiba Carrier Corporation