Toshiba MMU-AP0121MH, MMU-AP0181MH, MMU-AP0151MH H06 Low-pressure protective operation

Page 74

Check code name

Check code name

Cause of operation

[H04]

Compressor 1 case thermo operation 1. Case thermo circuit error

[H14]

Compressor 2 case thermo operation

2.

I/F P.C. board error

3.

Service valve closed

 

 

 

 

4.

Outdoor PMV clogging

 

 

5.

SV4 valve leak, Coil misinstallation

 

 

6.

4-way valve error

 

 

7.

Compressor error

 

 

8.

Refrigerant shortage

Check code name

Check code name

Cause of operation

[H06]

Low-pressure protective operation

1. Service valve close

 

 

2.

Ps sensor error

 

 

3.

SV2, SV4 circuit error

 

 

4.

Miscabling of communication between

 

 

 

indoor and outdoor

 

 

5.

Indoor/outdoor fan and condenser error

 

 

6.

Indoor/outdoor PMV clogging

 

 

7.

Indoor/outdoor heat exchanger clogging

 

 

8.

Refrigerant shortage

Is case thermo circuit normal?

1.Connector connection

2.Wiring

3.I/F P.C. board (Note 1)

YES

Are service valves of

gas pipe and liquid pipe of outdoor unit fully opened?

NO

(Note 1)

1.Case thermo is usually closed.

2.Operation temperature of case thermo is 120˚C.

NO

Repair case thermo circuit.

Open service valves fully.

Are service valves of gas and

liquid pipe of outdoor unit fully opened?

YES

Are characteristics of low-pressure sensor normal?

YES

NO

Open service valves fully.

NO

Exchange low-pressure sensor.

1 Pressure by pressure gauge (Check joint)

2Pressure display on 7-segment display

3Output voltage of I/F P.C. board

If 1 and 2, 3 are different, an error of pressure sensor error is considered. If 2 and 3 are different, check I/F P.C. board.

74

YES

Are outdoor PMV1/2/3 normal? 1. Connector connection

2. Wiring

3. Coil

4. Valve body

5. I/F P.C. board

 

YES

 

Operation starts.

Are SV41 and SV42

Valve circuits normal?

1.Misinstallation installation and connector connection of SV41 and SV42

2.Leakage from SV41, 42 circuit

YES

Does not refrigerant

bypass from discharge of

suction through 4-way valve?

NO

Is not refrigerant bypassed from discharge to suction?

NO

Is compressor normal? (Note 2)

NO

Connector CN300, 301, White

NO

SV4 valve: Connector CN311, Blue

YES

YES

NO

Repair outdoor PMV.

Correct SV4, SV5, SV11

valve circuits.

Check 4-way valve.

Check piping.

Compressor error

 

 

Are SV2 and SV4 circuits normal?

 

NO

 

Correct SV2 and SV4 circuits.

 

 

 

Check miscabling, misinstallation and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

connector connection.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is there no mispiping of discharge gas

 

YES

 

 

 

 

 

 

 

 

 

 

Correct piping.

 

 

 

and suction gas main pipes?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is not indoor unit with different circuit connected?

 

YES

 

 

 

Correct cabling.

 

 

 

(Check with miscabling check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

function of outdoor unit.)

 

 

 

 

 

 

 

 

 

Is flow selector normal?

 

NO

 

 

 

Check flow selector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In cooling season, go to (A), In heating season, go to (B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(A) Cooling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are following items concerned

 

 

 

 

 

 

 

 

 

Does indoor fan normally

NO

 

 

to indoor fan motor normal?

 

NO

 

 

 

 

 

 

 

 

1. Connector connection

 

 

 

Repair faulty parts.

 

 

 

 

operate in cooling season?

 

 

 

2. Condenser

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

3. Motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4. Fan

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

Cleaning

 

 

 

Is there clogging of indoor

 

 

 

 

YES

 

 

 

Check indoor P.C. board.

 

 

 

air filter or heat exchanger?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

NO

 

 

Is connector connection

 

NO

Failure Replace

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is indoor PMV normal?

 

 

 

 

 

 

 

 

 

 

 

 

or coil normal?

 

 

 

Repair faulty parts.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

YES

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerant shortage or

 

 

 

Is there clogging on whole valve?

 

 

 

Replace PMV body.

 

 

 

 

clogging or pipe deformed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(B) Heating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

Is outdoor fan normally

NO

 

 

Is indoor fan system normal?

 

Check outdoor

YES

(Note 2) Check the following items mainly.

 

1. Existence of abnormal sound and abnormal vibration during operation at start time

operated in heating season?

 

• Fan crack

 

I/F P.C. board.

 

 

 

• Fan coming-off

 

Failure Replace

 

 

 

2.

Abnormal overheat of case during operation or stop (Never touch with hands.)

3.

Current of compressor lead during operation or starting (No rapid current change)

 

YES

 

Is flow selector unit normal?

Check flow selector unit.

 

 

 

Cleaning

YES

YES

Is there clogging of

outdoor heat exchanger?

YES

Repair faulty parts.

NO

Refrigerant shortage,

NO

Is outdoor PMV normal?

YES

NO

clogging, pipe breakage

(After checking there is no slogging or pipe breakage, charge refrigerant again.)

 

Refrigerant shortage,

clogging, pipe deformed

Image 74
Contents Compact 4-Way Air Discharge Cassette Type Contents Safety Caution Fire is caused at user’s side Check the following items after reinstallationCatch the inner cables Metal section Earth positionPiping Safety Caution Concerned to New RefrigerantPipe Materials Flare nutTools R410A Conventional air Air conditioner installationConditioner installation General tools Conventional tools can be used4mm-hexagonal wrench is required Recharge of RefrigerantEnvironment Cylinder with siphonConstruction Views External Views Space required for Installation and servicingWired remote Drain-up standing-up sizeMCC-1402 Wiring DiagramFor Indoor unit Control P.C. boardName of Each Part Parts RatingParts Rating ModelParts Name of Remote Controller Display sectionButton Remote controller sensorOperation section Wind direction and SwingPreparation Turn on the main power switch and/or the leakage breakerCorrect Usage StopStart Automatic Operation Super Heat Recovery Type OnlyWhen restarting the operation after stop Cancel of timer operation Timer OperationTimer operation To select SET TimeHow to start swinging Adjustment of Wind DirectionHow to set up the air direction How to stop swingingInformation Air Conditioner Operations and Performance When the Following Symptoms are Found StandbyTo Disconnect the Appliance from Main Power Supply Precautions for SafetyNew Refrigerant Air Conditioner Installation 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 hanging bolt Ceiling opening and installation of hanging boltsInstallation of ceiling panel Sold separately Installation of remote controller Sold separatelyDrain Piping Work Thermal insulating process Piping material and dimensionsRefrigerant Piping Permissible pipe length and permissible height differenceAirtight test/Air purge, etc Electric WorkConnection of refrigerant pipe Open fully valves of the outdoor unit Gas leak checkIndoor/Outdoor inter-unit wiring, Central controller wiring Power supply specificationsIndoor unit power supply *1 Remote controller wiring *4Applicable Controls Change of lighting time of filter sign Case of installation to high ceilingCase of remote controller-less Group control Increased heating effectCase of wired remote controller How to execute test operationCase of wireless remote controller Test RUNCheck code list TroubleshootingConfirmation of error history Confirmation and check Check methodTroubleshooting Error detected by TCC-LINK central control deviceNew check code MaintenanceDaily maintenance Way Air Discharge Cassette TypeRefrigerating Cycle Diagram Functional part name Functional outlineRemote controller Control outline Command Control SpecificationsOutline of specifications Remarks Control OutlineReset conditions ValueTCB-AX21E Central control mode 4 Cannot select mode Central control mode 1 Cannot operateCentral control mode Procedure Execute the setup operation while the unit stops Applied ControlDescription At shipment HEAT, Heat → CoolRemote location ON/OFF control box TCB-IFCB-4E Applied Control in Indoor UnitIndoor unit capacity Function Ventilating fan control from remote controllerWiring OperationButton, set to the setup data Power peak-cut from indoor unitUsing the setup temp Leaving-ON prevention controlBefore troubleshooting TroubleshootingTroubleshooting Summary Troubleshooting procedureAuxiliary code Check code listCheck Method Judging deviceMG-SW Sensor block displayError detected by TCC-LINK central control device Check code Outdoor 7-segment display Auxiliary codeCheck code Confirmation of error history Troubleshooting by Check Display on Remote ControllerCase of wired remote controller RBC-AMT31E Procedure DescriptionCase of central remote controller TCB-SC642TLE Check code Auxiliary code Check codeOutdoor 7-segment display RemoteMain Outdoor 7-segment display Remote Setup method of No. capacity-over DetectionCheck code Convenient functionsRemote Main Outdoor 7-segment displayCheck code Auxiliary code DetectedRemote Check code Check item positionPosition Remote Status Error detection condition Check item positionDetected Main Check all the outdoor units in the corresponding line Check code Main Outdoor 7-segment displayH07 Check clogging of oil equation pipe between compressorsCheck code Main Outdoor 7-segment display Remote H16L30 Detected indoor address L31 P01 P03 P04 Heating TS error judgment standard temperatureName Remote Check code Auxiliary code Error detection condition Check item position Outdoor 7-segment display Check code nameDisplay on Outdoor 7-segment display Detected positionDevice Check code Central controlHow to check the outdoor fan motor How to check inverter outputHow to check resistance of compressor winding Measured position CriteriaE04 Diagnosis Procedure for Each Check CodeE03 E02E06 Decreased number of indoor units E07E15 E08E12 E09 Duplicated masterE19 E16E18 ReferenceE23 ∗ 1 How to clear the errorE20 E25F02 E31F01 F03F06 TE1 sensor error F04 TD1 sensor errorF05 TD2 sensor error F08 To sensor errorTE1, TL F29 Indoor other errorF15 Outdoor temp sensor miscabling F23H01 F31H02 H03H06 Low-pressure protective operation Clogging check for SV3D valve Leakage check for SV3C valveClogging for SV3E valve Clogging check for oil-equalization circuit H08Oil level detective circuit system error TK3 temperature detective circuit errorL05 H16 TK4 temperature detective circuit errorL04 L03L17 L07 Group line in individual indoor unitL10 L08L20 L18L29 L28P03 P01 Indoor fan motor errorL30 Interlock in indoor unit L31High-pressure SW P05 Open phase, negative phaseP04 Actuation Auxiliary code Compressor 1 sideIndoor fan motor error P07 Heat sink overheat errorP10 Indoor overflow error P12Gas leak detection P13 Outdoor liquid back detection error 1. PMV1/PMV2 errorP15 TS condition Auxiliary codeP17 Discharge temp TD2 errorP15 Gas leak detection TD condition Auxiliary codeJudgment criteria P19 Way valve operation errorP20 High-pressure protective operation P22 Outdoor fan Ipdu error Auxiliary code 0 ∗P29 P26 Tr short-circuit protection errorDetective circuit error P31Segment Display Function Check procedure in case of stop with troubleHow to read the check monitor Segment display Segment display on the outdoor unit Interface P.C. boardSW01 SW02 SW03 Display contents There is auxiliary code Check code ∗ ∗ ∗ for 3 seconds Data display of outdoor cycle Displayed on each outdoor unit SW03 SW02 Indoor address Segment display aW01 SW02 SW03 Display contents Segment display Sensor CharacteristicsTemperature sensor characteristics Segment display A, BWeekly timer Configuration of Control CircuitWired remote controller Up to 2 units Indoor UnitCompact 4-way Air Discharge Cassette Type Connection of wireless remote controllerKit Remote WirelessCassette Type Controller Compact4-way Air Discharge Connection of both remoteMCC-1402 Compact 4-way Air DischargeType CassetteOptional Connector Specifications of Indoor P.C. Board Function Connector Pin Specifications RemarksPreparing work Part name Procedure RemarksDetachments Attachment100 No. Part name Procedure Remarks 101102 Fan guard 1. Detachment No. Part name Procedure103 Bell mouth 1. Detachment104 Fan motor 1. Detachment105 Drain pump 1. DetachmentArrow view B Details of sensor lead wire drawing106 Details of a partHeat Exchanger Recover refrigerant gas107 Exchange procedure 10. P.C. Board Exchange ProceduresExchange of P.C. Board for Indoor Service 108Procedure 1 Readout setup contents from Eeprom Remote controller operation diagramProcedure 2 Exchange of P.C. board for service 110Procedure 3 Writing-in of setup contents to Eeprom Eeprom layoutMake a note of the setup contents. Item code list Example 113 Exploded Views and Parts ListCeiling Panel Description211 Compact 4-way Air Discharge Cassette TypeMMU-AP0071MH, AP0091MH, AP0121MH, AP0151MH, AP0181MH 1140071MH 0091MH 0121MH 0151MH 0181MH 115Description Remarks Model Name 116 Description Model NameToshiba Carrier Corporation

MMU-AP0181MH, MMU-AP0071MH, MMU-AP0091MH, MMU-AP0151MH, MMU-AP0121MH specifications

The Toshiba MMU-AP series, consisting of models MMU-AP0121MH, MMU-AP0151MH, MMU-AP0091MH, MMU-AP0071MH, and MMU-AP0181MH, represents a significant advancement in the realm of power management and energy efficiency for a variety of applications. These modules are designed to optimize performance while ensuring minimal energy consumption, making them suitable for both commercial and industrial uses.

One of the standout features of the MMU-AP series is its intelligent power management technology. This feature allows for adaptive energy distribution based on real-time demands. By leveraging precise control algorithms, the modules can adjust their output to match the specific requirements of connected devices, ultimately leading to reduced power loss and increased efficiency. This adaptability not only benefits end-users by lowering operational costs but also contributes to a greener environment by minimizing waste.

The versatility of the MMU-AP series is evident in its wide range of operational capabilities. These power modules are designed to work effectively in various voltage levels and load conditions. With input voltage ranges suitable for standard industrial environments, they can easily be integrated into existing systems, enhancing overall functionality without requiring extensive modifications.

Moreover, the compact design of the MMU-AP modules is another notable characteristic. Their size and light weight facilitate easier installation and integration into tight spaces, making them ideal for applications where real estate is a premium. This compact profile does not compromise performance, as these modules are engineered to deliver robust power output while maintaining thermal efficiency.

In terms of reliability, the MMU-AP series is built with high-grade components that withstand harsh operating conditions. With features such as over-voltage protection, short-circuit protection, and thermal shutdown capabilities, users can trust that their equipment would operate safely and efficiently, thereby extending the lifespan of both the power modules and the devices they serve.

Finally, Toshiba’s commitment to innovation ensures that the MMU-AP series incorporates cutting-edge technology. The series supports communication protocols that enable seamless integration with smart systems, paving the way for advanced monitoring and control functions. This levels up the user experience, providing insights into performance and diagnostics that are crucial for uptime and reliability in demanding environments.

In conclusion, the Toshiba MMU-AP series offers a blend of efficiency, adaptability, and advanced technology, making it a valuable asset for various industrial and commercial applications. Its intelligent design and robust features ensure that users can optimize energy use while maintaining high performance and reliability.