SERVICE MANUAL - Toshiba

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Warning Indications on the Air Conditioner Unit[Confirmation of warning label on the main unit]Confirm that labels are indicated on the specified positionsIf removing the label during parts replace, stick it as the original.Warning indicationDescriptionWARNINGELECTRICAL SHOCK HAZARDDisconnect all remoteelectric power suppliesbefore servicing.WARNINGELECTRICAL SHOCK HAZARDDisconnect all remote electric power supplies before servicing.WARNINGMoving parts.Do not operate unit with grilleremoved.Stop the unit before the servicing.WARNINGMoving parts.Do not operate unit with grille removed.Stop the unit before the servicing.CAUTIONHigh temperature parts.You might get burnedwhen removing this panel.CAUTIONHigh temperature parts.You might get burned when removing this panel.CAUTIONDo not touch the aluminumfins of the unit.Doing so may result in injury.CAUTIONDo not touch the aluminium fins of the unit.Doing so may result in injury.CAUTIONBURST HAZARDOpen the service valves beforethe operation, otherwise theremight be the burst.CAUTIONBURST HAZARDOpen the service valves before the operation, otherwise there might be theburst.CAUTIONDo not climb onto thefan guard.Doing so may result in injury.CAUTIONDo not climb onto the fan guard.Doing so may result in injury.7
Precautions for SafetyThe manufacturer shall not assume any liability for the damage caused by not observing the description of thismanual.DANGERTurn offbreaker.Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker forboth the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result.Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the circuit breaker tothe OFF position.Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interiorparts.Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the intake grille of the indoorunit or service panel of the outdoor unit and do the work required.Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuitbreaker to the OFF position, and place a “Work in progress” sign on the circuit breaker.When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF withoutfail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work.When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smellof burning, abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking) has occurredin the air conditioner, do not touch the air conditioner yourself but set the circuit breaker to the OFF position,and contact a qualified service person. Take steps to ensure that the power will not be turned on (by marking“out of service” near the circuit breaker, for instance) until qualified service person arrives. Continuing to use theair conditioner in the trouble status may cause mechanical problems to escalate or result in electric shocks orother failure.Electric shockhazardProhibitionStay onprotectionWhen you access inside of the service panel to repair electric parts, wait for about five minutes after turning offthe breaker. Do not start repairing immediately.Otherwise you may get electric shock by touching terminals ofhigh-voltage capacitors. Natural discharge of the capacitor takes about five minutes.Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removalwork is being carried out.There is a danger of electric shocks if the circuit breaker is set to ON by mistake.Before operating the air conditioner after having completed the work, check that the electrical parts box coverof the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position.You may receive an electric shock if the power is turned on without first conducting these checks.If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts withthe electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unitremoved in order to find out exactly where the trouble lies, wear insulated heat-resistant gloves, insulated bootsand insulated work overalls, and take care to avoid touching any live parts.You may receive an electric shock if you fail to heed this warning. Only qualified service person (*1) is allowedto do this kind of work.8
Page 1 and 2: FILE No. A10-005AIR CONDITIONER (MU
Page 3 and 4: 4-1. Normal Operation (COOL Mode /
Page 5 and 6: 9-4. Cooling-Season Outdoor Unit Ba
Page 7: Definition of Protective GearWhen t
Page 11 and 12: Use specifiedparts.When any of the
Page 13 and 14: Only a qualified installer (*1) or
Page 15 and 16: SpecificationsModelMMY-MAP0804HT8-E
Page 17 and 18: Carrying in the Outdoor UnitCAUTION
Page 19 and 20: Selection of Pipe SizeCoupling size
Page 21 and 22: Table 2Standard typeHigh Efficiency
Page 23 and 24: 4. Tools(1) Required Tools for R410
Page 25 and 26: Models: MMY-MAP1404 and MAP160424
Page 27 and 28: 1-2-2. Compact 4-way Cassette TypeM
Page 29 and 30: 1-2-4. 1-way Air Discharge Cassette
Page 31 and 32: 1-2-6. 2-way Air Discharge Cassette
Page 33 and 34: 1-2-8. Concealed Duct High Static P
Page 35 and 36: 1-2-9. Slim Duct TypeModels: MMD-AP
Page 37 and 38: 1-2-11.High Wall Type 2 seriesModel
Page 39 and 40: 1-2-13.Floor Standing Cabinet TypeM
Page 41 and 42: 1-2-15.Floor Standing TypeModels: M
Page 43 and 44: Models: MMD-AP0721HFE and MMD-AP096
Page 45 and 46: 2-2. Outdoor Unit (60Hz model: MMY-
Page 47 and 48: 2-4. Outdoor Inverter (60Hz model:
Page 49 and 50: 2-way Air Discharge Cassette TypeMo
Page 51 and 52: Concealed Duct High Static Pressure
Page 53 and 54: Floor Standing TypeModel MMF-AP 015
Page 55 and 56: 14, 16HPModel: MMY-MAP1404, MAP1604
Page 57 and 58: Outdoor Unit (14, 16HP)Model: MMY-M
Page 59 and 60:
2-8-2. Inverter P.C. board for comp
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3 Refrigerant Piping Systematic Dra
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Explanation of Functional PartsFunc
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4 Combined Refrigerant Piping Syste
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4-3. Normal Operation (HEAT Mode)He
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4-5. Emergency Operation (Heating O
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5 Control Outline Indoor UnitContro
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NO. Item Specification outline Rema
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NO. Item Specification outline Rema
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Outdoor UnitItem Description of ope
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Item Description of operation, nume
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1 Cooling operation under low outsi
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Centralcontrolremotecontroller(opti
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6-1-2. When Wireless Remote Control
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Centralcontrolremotecontroller(opti
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XYDC5VPower supply circuitMain (sub
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6-2. Indoor Printed Circuit BoardMC
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MCC-1403 Power supplyPower supplytr
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6-4. Test Operation of Indoor Unit
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Function CODE No. (DN Code) Table (
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TypeDN code “10”Value Type Mode
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▼ Ventilating fan control from re
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6-7. Applied control for Outdoor Un
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(2) Indoor unit setup method for pr
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6-8-1. Power peak-cut Control (Stan
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6-8-3. Snowfall Fan ControlHeader o
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6-8-6. Operation Mode Selection Con
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6-8-8. Compressor Operation OutputO
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7 TEST OPERATION7-1. Procedure and
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(2) In the case that a central cont
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• Check the additional amount of
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7-4. Address SetupThis product requ
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(Example)Controlling 2 or more refr
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10 Set the central control address.
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Manual address setup from the remot
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To find an indoor unit’s position
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4 Push the TIME / buttons repeatedl
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2) Turn on dip switch 2 of SW30 on
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7-4-4. Check after Address Setup wh
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7-5-2. Operation from the indoor re
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Miswiring exampleFigureRemotecontro
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7-6-2. Cooling/Heating Test Operati
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(2) Test operationSTARTTest operati
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7-7. Service Support Function7-7-1.
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7-7-2. Function to Start/Stop (ON/O
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(2) Heating test operation function
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(4) Individual start/stop (ON/OFF)
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(2)Clearing error by using switches
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7-7-5. Pulse Motor Valve (PMV) Forc
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7-7-8. Fan Operation Check in Outdo
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7-7-10.Manual Adjustment Function o
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7-7-11.Monitor Function of Remote C
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8 TROUBLESHOOTING8-1. Overview(1) B
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(Error detected by main remote cont
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F12 - F12 ALTF15 - F15 ALTF16 - F16
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(Errors detected by IPDU featuring
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Using TCC-LINK central control remo
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Light block Check code Cause of fau
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8-4. Check Codes Displayed on Remot
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MainremotecontrollerCheck codeOutdo
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MainremotecontrollerP04P05P07P10Che
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Errors Detected by TCC-LINK Central
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8-5. Diagnosis procedure for each c
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Check code Check code name CauseChe
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Check code Check code nameCause[E18
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Check code Check code nameCause[E31
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Check code Check code nameCause[F15
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Check code Check code nameCause[H01
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(*3) Check for solenoid valve of al
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Check code Check code nameCause[L17
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Check code Check code nameCause[P04
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(C)Heating operationDoes heatingind
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(1)Display of System Information (D
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(3)Display of Outdoor Cycle Data (D
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(5)Display of Indoor Unit Informati
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8-8. Leakage/Clogging of Refrigerat
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List of Check Codes Generated upon
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8-9. Sensor CharacteristicsOutdoor
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Indoor TC1 sensor200150Resistance[k
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240Outdoor Unit▼ Ps sensor charac
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9-2. Compressor Backup Operation Se
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(6) Turn on the power supply to all
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(8) Set Bits 1 and 2 of SW30 on the
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10OUTDOOR UNIT REFRIGERANTRECOVERY
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[Setup of failed outdoor unit](13)W
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[Setup of outdoor units other than
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10-3.Work procedure after RepairWhe
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11-2.Replacement of Compressors•
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[When replacing normal as well as f
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11-3.Check Procedure to Search Caus
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Check items and procedures to follo
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No. Part to be replaced Work proced
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13P.C. BOARD EXCHANGE PROCEDURES In
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Procedure 1: Reading Setting Data f
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Procedure 3: Writing Setting Data i
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CODE No. list (Example)CODE No. (DN
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13-2-3.Interface board (MCC-1606) r
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(6) Set the dip switch (SW800) sett
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13-2-6.Noise Filter P.C. Board (MCC
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(7) Install the service P.C. boards
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040010033046050078045 046 078044 04
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SMMS-i OUTDOOR UNITMMY-MAP1404HT8(Z
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REFRIGERATION CIRCUIT DIAGRAMMMOTOR
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Ref.No.Part No.DescriptionMAP0804HT
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NSW08ONOFFSW10ONSW09ONSW07ONSW06ONB
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SMMS-i OUTDOOR UNITMMY-MAP0804T8(Z)
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032010026 027(SV41)046 050 078031 (
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Ref.No.Part No.DescriptionMAP0804T8
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NONOFFONONONON3 4211BLKWHIONONONONB
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040010033046050078045 046 078044 04
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SMMS-i OUTDOOR UNITMMY-MAP0804T8(Z)
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032010026 027(SV41)046 050 078031 (
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040010033046050078045 046 078044 04
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032010026 027(SV41)046 050 078046 0
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040010033046050078045 046 078044 04
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SMMS-i OUTDOOR UNITMMY-MAP1404T8-SG
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WARNINGS ON REFRIGERANT LEAKAGEChec
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SERVICE MANUAL - Toshiba

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