Toshiba MMU-AP0091MH, MMU-AP0181MH, MMU-AP0151MH Oil level detective circuit system error

Page 77

77

Check code name

Check code name

Cause of operation

[H16]

Oil level detective circuit system error

1. Detachment of TK2 sensor, miscabling,

 

 

 

(Auxiliary code : 02)

characteristics error of resistance value

 

 

 

 

 

 

2. Oil-equalization circuit error

 

 

 

 

 

 

(Check valve, capillary clogging,

 

 

 

 

 

 

strainer clogging)

 

 

 

 

 

 

3. Refrigerant stagnation in compressor

 

 

 

 

 

 

shell

 

 

 

 

 

 

 

 

 

Is not TK2 sensor detached?

YES

 

 

Correct installation of sensor.

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct miscabling/misinstallation.

 

 

 

 

 

 

Is there no miscabling or misinstallation

YES

 

 

TK1: CN514

 

 

 

 

 

TK2: CN515

on TK1/TK2/TK3/TK4 sensors?

 

 

 

 

 

( TK3: CN516 )

 

 

 

 

 

 

 

 

 

NO

 

NO

 

 

TK4: CN523

 

 

 

 

 

 

 

 

 

 

Are characteristics of TK2 sensor

 

 

 

 

 

Sensor error

resistance value normal?

 

Outdoor unit temp sensor characteristics-4

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

Does OCR of MG-SW operate?

 

 

Reset OCR manually.( 2)

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

After power reset

 

 

 

 

Error

 

 

 

 

 

 

 

Start a test operation in COOL or HEAT mode.

 

 

 

 

Replace clogging part.

 

 

 

 

 

 

 

 

 

 

 

 

TK2 sensor temp is displayed on 7-segment display with SW01/02/03=[1] [12] [2].

Check TK2 sensor temp approx. 10 minutes after compressor 2 has operated.

If low temperature continues (approximately outside temp) or temperature

does not almost change, a clogging of strainer of oil-equalization circuit,

 

 

Compressor 2

clogging of capillary, or malfunction of check valve is considered.

 

 

 

 

 

 

 

 

 

 

 

 

 

No error

 

 

 

 

 

 

 

 

 

 

 

Strainer

 

 

 

 

 

Capillary tube

 

 

 

 

 

 

TK2

Check the clogging of SV3E valve.

Error

 

Oil tank

(*1)

1 Refer to item [H07] error.

 

 

 

 

 

 

 

No error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check I/F P.C. board

 

 

Replace SV3E valve.

 

 

 

 

 

 

 

 

2 If OCR operates even after manual reset of OCR, check whether the wiring to the current sensor (T02) of Comp-IPDU is correct or not.

Check code name

Check code name

Cause of operation

[H16]

 

TK3 temperature detective circuit error

1. Detachment of TK3 sensor, miscabling,

 

 

 

(Auxiliary code : 03)

characteristics error of resistance value

 

 

 

 

 

 

2. Error of SV3C valve circuit periphery

 

 

 

 

 

 

(Check capillary clogging, strainer

 

 

 

 

 

 

clogging)

 

 

 

 

 

 

3. Refrigerant stagnation in compressor

 

 

 

 

 

 

shell

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

Is not TK3 sensor come off?

 

 

Correct installation of sensor.

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct miscabling/misinstallation.

 

 

 

 

 

 

Is there no miscabling or misinstallation

YES

 

 

TK1: CN514

 

 

 

 

 

TK2: CN515

on TK1/TK2/TK3/TK4 sensors?

 

 

 

 

 

( TK3: CN516 )

 

 

 

 

 

 

 

 

 

 

NO

NO

 

 

TK4: CN523

 

 

 

 

 

 

Are characteristics of TK3 sensor

 

 

 

 

 

Sensor error Replace

 

 

 

 

 

resistance value normal?

* Outdoor unit temp sensor characteristics-4

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

After power reset,

 

 

 

 

 

 

 

 

check capillary choke of SV3C valve bypass.

 

 

 

 

 

 

 

 

Error

 

Start a test operation in COOL or HEAT mode.

 

Replace clogged part (Capillary).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TK3 sensor temp is displayed on 7-segment display with SW01/02/03=[1] [13] [2].

Check TK3 sensor temp approx. 10 minutes after compressor 2 has operated.

Strainer

 

If low temperature continues (approximately outside temp) or temperature

 

does not almost change, a clogging of parallel capillary is considered.

 

 

 

 

 

No error

 

 

 

 

 

SV3E valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TK3

 

 

 

Error

 

 

 

 

Check the clogging of SV3E valve.

 

 

 

 

 

 

 

Replace SV3E valve.

 

 

 

 

 

(Note 1)

(Note 1) Refer to item [H07] error.

 

 

 

 

 

 

 

 

No error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check I/F P.C. board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 76 Page 78
Image 77
Page 76 Page 78
Contents
Compact 4-Way Air Discharge Cassette Type Contents Safety Caution Catch the inner cables Check the following items after reinstallationFire is caused at user’s side Metal section Earth positionPipe Materials Safety Caution Concerned to New RefrigerantPiping Flare nutConditioner installation R410A Conventional air Air conditioner installationTools General tools Conventional tools can be usedEnvironment Recharge of Refrigerant4mm-hexagonal wrench is required Cylinder with siphonWired remote Space required for Installation and servicingConstruction Views External Views Drain-up standing-up sizeFor Indoor unit Wiring DiagramMCC-1402 Control P.C. boardParts Rating Parts RatingName of Each Part ModelDisplay section Parts Name of Remote ControllerOperation section Remote controller sensorButton Wind direction and SwingCorrect Usage Turn on the main power switch and/or the leakage breakerPreparation StopStart Automatic Operation Super Heat Recovery Type OnlyWhen restarting the operation after stop Timer operation Timer OperationCancel of timer operation To select SET TimeHow to set up the air direction Adjustment of Wind DirectionHow to start swinging How to stop swingingInformation Air Conditioner Operations and Performance Standby When the Following Symptoms are FoundNew Refrigerant Air Conditioner Installation Precautions for SafetyTo Disconnect the Appliance from Main Power Supply Connect all of the installation wiring correctlyInstallation space Selection of Installation PlaceInstallation space Installable ceiling height listDimensional view Installation of Indoor UnitCase of wireless type Installation of ceiling panel Sold separately Ceiling opening and installation of hanging boltsInstallation of hanging bolt Installation of remote controller Sold separatelyDrain Piping Work Refrigerant Piping Piping material and dimensionsThermal insulating process Permissible pipe length and permissible height differenceConnection of refrigerant pipe Electric WorkAirtight test/Air purge, etc Open fully valves of the outdoor unit Gas leak checkIndoor unit power supply *1 Power supply specificationsIndoor/Outdoor inter-unit wiring, Central controller wiring Remote controller wiring *4Applicable Controls Case of remote controller-less Group control Case of installation to high ceilingChange of lighting time of filter sign Increased heating effectCase of wireless remote controller How to execute test operationCase of wired remote controller Test RUNConfirmation of error history TroubleshootingCheck code list Confirmation and check Check methodError detected by TCC-LINK central control device TroubleshootingDaily maintenance MaintenanceNew check code Way Air Discharge Cassette TypeFunctional part name Functional outline Refrigerating Cycle DiagramOutline of specifications Remarks Control SpecificationsRemote controller Control outline Command Control OutlineValue Reset conditionsTCB-AX21E Central control mode 4 Cannot select mode Central control mode 1 Cannot operateCentral control mode Applied Control Procedure Execute the setup operation while the unit stopsHEAT, Heat → Cool Description At shipmentRemote location ON/OFF control box TCB-IFCB-4E Applied Control in Indoor UnitIndoor unit capacity Wiring Ventilating fan control from remote controllerFunction OperationUsing the setup temp Power peak-cut from indoor unitButton, set to the setup data Leaving-ON prevention controlTroubleshooting Summary TroubleshootingBefore troubleshooting Troubleshooting procedureCheck Method Check code listAuxiliary code Judging deviceSensor block display MG-SWCheck code Outdoor 7-segment display Auxiliary code Error detected by TCC-LINK central control deviceCheck code Case of wired remote controller RBC-AMT31E Troubleshooting by Check Display on Remote ControllerConfirmation of error history Procedure DescriptionCase of central remote controller TCB-SC642TLE Outdoor 7-segment display Check codeCheck code Auxiliary code RemoteCheck code Setup method of No. capacity-over DetectionMain Outdoor 7-segment display Remote Convenient functionsCheck code Auxiliary code Main Outdoor 7-segment displayRemote DetectedCheck item position Remote Check codePosition Remote Status Error detection condition Check item positionDetected Main H07 Check code Main Outdoor 7-segment displayCheck all the outdoor units in the corresponding line Check clogging of oil equation pipe between compressorsH16 Check code Main Outdoor 7-segment display RemoteL30 Detected indoor address L31 P01 P03 P04 Heating TS error judgment standard temperatureName Remote Check code Auxiliary code Outdoor 7-segment display Check code name Error detection condition Check item positionDevice Check code Outdoor 7-segment display Detected positionDisplay on Central controlHow to check resistance of compressor winding How to check inverter outputHow to check the outdoor fan motor Measured position CriteriaE03 Diagnosis Procedure for Each Check CodeE04 E02E07 E06 Decreased number of indoor unitsE12 E08E15 E09 Duplicated masterE18 E16E19 ReferenceE20 ∗ 1 How to clear the errorE23 E25F01 E31F02 F03F05 TD2 sensor error F04 TD1 sensor errorF06 TE1 sensor error F08 To sensor errorF15 Outdoor temp sensor miscabling F29 Indoor other errorTE1, TL F23 H02 F31 H01 H03H06 Low-pressure protective operation Clogging check for SV3D valve Leakage check for SV3C valveClogging for SV3E valve H08 Clogging check for oil-equalization circuitTK3 temperature detective circuit error Oil level detective circuit system errorL04 H16 TK4 temperature detective circuit errorL05 L03L10 L07 Group line in individual indoor unitL17 L08L29 L18L20 L28L30 Interlock in indoor unit P01 Indoor fan motor errorP03 L31P04 Actuation P05 Open phase, negative phaseHigh-pressure SW Auxiliary code Compressor 1 sideP10 Indoor overflow error P07 Heat sink overheat errorIndoor fan motor error P12P15 P13 Outdoor liquid back detection error 1. PMV1/PMV2 errorGas leak detection TS condition Auxiliary codeP15 Gas leak detection Discharge temp TD2 errorP17 TD condition Auxiliary codeJudgment criteria P19 Way valve operation errorP20 High-pressure protective operation Auxiliary code 0 ∗ P22 Outdoor fan Ipdu errorDetective circuit error P26 Tr short-circuit protection errorP29 P31How to read the check monitor Segment display Check procedure in case of stop with troubleSegment Display Function Segment display on the outdoor unit Interface P.C. boardSW01 SW02 SW03 Display contents There is auxiliary code Check code ∗ ∗ ∗ for 3 seconds SW03 SW02 Indoor address Segment display a Data display of outdoor cycle Displayed on each outdoor unitTemperature sensor characteristics Sensor CharacteristicsW01 SW02 SW03 Display contents Segment display Segment display A, BWired remote controller Up to 2 units Configuration of Control CircuitWeekly timer Indoor UnitCompact 4-way Air Discharge Cassette Type Connection of wireless remote controllerKit Cassette Type Controller WirelessRemote Compact4-way Air Discharge Connection of both remoteType Air DischargeMCC-1402 Compact 4-way CassetteFunction Connector Pin Specifications Remarks Optional Connector Specifications of Indoor P.C. BoardDetachments Part name Procedure RemarksPreparing work Attachment100 101 No. Part name Procedure Remarks102 103 No. Part name ProcedureFan guard 1. Detachment Bell mouth 1. DetachmentFan motor 1. Detachment 104Drain pump 1. Detachment 105106 Details of sensor lead wire drawingArrow view B Details of a partHeat Exchanger Recover refrigerant gas107 Exchange of P.C. Board for Indoor Service 10. P.C. Board Exchange ProceduresExchange procedure 108Remote controller operation diagram Procedure 1 Readout setup contents from Eeprom110 Procedure 2 Exchange of P.C. board for serviceEeprom layout Procedure 3 Writing-in of setup contents to EepromMake a note of the setup contents. Item code list Example Ceiling Panel Exploded Views and Parts List113 DescriptionMMU-AP0071MH, AP0091MH, AP0121MH, AP0151MH, AP0181MH Compact 4-way Air Discharge Cassette Type211 1140071MH 0091MH 0121MH 0151MH 0181MH 115Description Remarks Model Name Description Model Name 116Toshiba Carrier Corporation
Top Page Image Contents