Toshiba MMU-AP0152SH Service Manual
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Toshiba MMU-AP0152SH Service Manual

Toshiba MMU-AP0152SH Service Manual

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Download this manual See also: Owner's Manual, Owner's Manual Installation and Operation

SERVICE MANUAL

MMU-AP0152SH, AP0152SH-K
MMU-AP0182SH, AP0182SH-K
MMU-AP0242SH, AP0242SH-K
• This Service Manual describes contents of the new 1-Way Discharge Cassette indoor unit.
For the outdoor unit, refer to the Manual with FILE NO. A03-009.
<1-Way Discharge Cassette Type>
FILE NO. A05-007
PRINTED IN JAPAN, Jul, 2005 ToMo

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Summary of Contents for Toshiba MMU-AP0152SH

  • Page 1: Service Manual

    FILE NO. A05-007 SERVICE MANUAL <1-Way Discharge Cassette Type> MMU-AP0152SH, AP0152SH-K MMU-AP0182SH, AP0182SH-K MMU-AP0242SH, AP0242SH-K • This Service Manual describes contents of the new 1-Way Discharge Cassette indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A03-009.

  • Page 2: Table Of Contents

    CONTENTS SAFETY CAUTION .................... 3 1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........8 2. WIRING DIAGRAM ..................9 3. PARTS RATING ..................10 4. REFRIGERANTING CYCLE DIAGRAM ........... 35 5. CONTROL OUTLINE ................36 6. APPLIED CONTROL ................40 7. TROUBLESHOOTING ................45 8.

  • Page 3: Safety Caution

    SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents, and keep them. WARNING Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.
  • Page 4 WARNING After repair work, surely assemble the disassembled parts, and connect and lead the removed cables as before. Perform the work so that the cabinet or panel does not catch the inner cables. If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or Assembly/Cabling fire is caused at user’s side.
  • Page 5 • New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
  • Page 6 4. Tools (1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.
  • Page 7 5. Recharge of Refrigerant When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below. Recover the refrigerant and check there is no refrigerant in the equipment. Leave it as it is for 1 to 2 minutes and check the indicator of the compound gauge does not return.

  • Page 8: Construction Views (External Views)

    1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Wire inlet (Knockout hole) Drain pipe connecting port (Be sure to connect the attached flexible hose.) Fresh air inlet (Ø92 knockout hole) Ø112 (4-tapping screw under-hole) Wire inlet 1060 Hanging bolt pitch 1190 Ceiling opening size 1230 Panel external size Refrigerant pipe connecting port Gas side B...

  • Page 9: Wiring Diagram

    Color Parts name Symbol indication Fan motor RED : RED Indoor temp sensor WHI : WHITE Temp sensor YEL : YELLOW Temp sensor BLU : BLUE Temp sensor BLK : BLACK Louver motor GRY: GRAY High ceiling setup Drain pump motor PNK : PINK 1 2 3 4 5 Float switsh...

  • Page 10: Parts Rating

    3. PARTS RATING 3-1. Parts Rating Model MMU-AP 0152SH 0182SH 0242SH Fan motor SWF-280-60-1 Driving motor for horizontal grille MP24GA1 Pulse motor EDM-MD12TF-3 Pulse motor valve EDM-B40YGTF-3 TA sensor Lead wire length : 155mm Vinyl tube TC1 sensor Ø4 size lead wire length : 1100mm Vinyl tube (Blue) TC2 sensor Ø6 size lead wire length : 1100mm Vinyl tube (Black) TCJ sensor...

  • Page 11: Parts Name Of Remote Controller

    3-3. Parts Name of Remote Controller Display section CODE No. DATA SETTING TEST Display In the display example, all indicators are displayed for the explanation. UNIT No. section R.C. In reality only, the selected contents are indicated. TEMP. ON / OFF •...

  • Page 12: Operation Section

    Operation section Push each button to select a desired operation. This remote controller can operate the maximum 8 indoor units. • The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing ON / OFF button only.

  • Page 13: Correct Usage

    3-4. Correct Usage When you use the air conditioner for the first time or when you change the SET DATA value, follow the proce- dure below. From the next time, the operation displayed on the remote controller will start by pushing the ON / OFF button only.
  • Page 14 3-5. Automatic Operation (Super Heat Recovery Type Only) When you set the air conditioner in mode or switch over from AUTO operation because of some settings change, it will automatically select either cooling, heating, or fan only operation depending on the indoor tem- perature.

  • Page 15: Timer Operation

    3-6. TIMER Operation A type of timer operation can be selected from the following three types. OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts when the time of timer has reached the set time.

  • Page 16: Adjustment Of Wind Direction

    3-7. Adjustment of Wind Direction • While the air conditioner stops, the horizontal flap (Up/Down air direction adjustment plate) automati- cally directs upward. • While the air conditioner is in ready status for heating, the horizontal flap (Up/Down air direction adjustment plate) directs upward.
  • Page 17 3-8. Information Confirmation before operation Protective device (High pressure switch) • Turn on the power switch 12 hours before starting This device stops automatically an operation when the operation. excessive force is applied on the air conditioner. • Make sure whether earth wire is connected. If the protective device works, the operation stops and the operation lamp flashes.

  • Page 18: Air Conditioner Operations And Performance

    3-9. Air Conditioner Operations and Performance 3 minutes protection function 3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main power switch/circuit breaker is turned on for re-starting the air conditioner. Power failure Power failure during operation will stop the unit completely. •...

  • Page 19: When The Following Symptoms Are Found

    3-10. When the Following Symptoms are Found Check the points described below before asking repair servicing. Symptom Cause Outdoor unit • White misty cold air • Fan of the outdoor unit stops automatically and performs defrost or water is out. operation.

  • Page 20: Precautions For Safety

    If the connecting wire is connected in a wrong way, electric parts may be damaged. (6.4mm (diam.), Nominal (diam.) 1/4” thick 0.8mm) MMU-AP0152SH, MMU-AP0182SH • When moving the air conditioner for the installation into another place, be very careful not (9.5mm (diam.), Nominal (diam.) 3/8”...

  • Page 21: Selection Of Installation Place

    SELECTION OF INSTALLATION PLACE PRECAUTIONS FOR SAFETY WARNING • Do not install in a place that might increase the vibration of the unit. • Install the air conditioner where there is sufficient strength to weight of the unit. • To avoid personal injury (with sharp edges), be careful when handling parts. If strength is insufficient, the unit may fall down resulting in human injury.

  • Page 22: Installation Of Indoor Unit

    SELECTION OF INSTALLATION PLACE External view Height of ceiling The installable ceiling height of the air conditioner is within 4.2m. If the height exceeds 4.2m, distribution of the air volume becomes poor. Wire inlet (Knockout hole) If the ceiling height exceeds the standard value (At shipment) in the following table, hot air is difficult to arrive at floor.
  • Page 23 INSTALLATION OF INDOOR UNIT Ceiling opening and installation of hanging bolts Hanging up of unit • Considering pipe/wire connecting work inside the ceiling after the indoor unit has been hanged, select an CAUTION installation place and determine piping direction. • After installation place of the indoor unit has been determined, open the installation hole on the ceiling and install This unit is incorporated with drain pump and float switch.

  • Page 24: Drain Piping Work

    DRAIN PIPING WORK INSTALLATION OF INDOOR UNIT Installation of ceiling panel (Sold separately) Pipe material/Insulator and size CAUTION The following materials for piping work and insulating Install the ceiling panel according to Installation Manual after piping/wiring work has completed. • Following the Installation Manual, perform process are procured locally.
  • Page 25 DRAIN PIPING WORK Connection of drain pipe Check the draining Heat insulating process • Connect the hard socket (local supply) to the hard After drain piping work, check that water drain is • After drain check, using the attached heat insulator for drain connecting section, wrap the flexible hose without socket side of the attached flexible hose which has properly performed and water does not leak from the clearance from the end of the drain pipe connecting port of the indoor unit.

  • Page 26: Refrigerant Piping

    REFRIGERANT PIPING • Projection margin in flaring : WARNING Airtight test/Air purge, etc. B (Unit : mm) For airtight test, air purge, addition of refrigerant, and • If refrigerant gas has leaked during the installation work, ventilate the room immediately. gas leak check, follow the Installation Manual attached •...

  • Page 27: Electric Work

    ELECTRIC WORK Power supply cord and communication wires specifications WARNING Power supply cord and communication wires are procured locally. 1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external strength of the wires do not transmit to the connecting part of the terminals. For the power supply specifications, follow to the table below.
  • Page 28 ELECTRIC WORK <Wiring diagram> Cable connection Remote controller wiring • As the remote controller wire has no polarity, Terminal block for REQUIREMENT remote controller Terminal block there is no problem if connections to indoor wiring of indoor unit unit terminal blocks A and B are reversed. •...

  • Page 29: Applicable Controls

    APPLICABLE CONTROLS NOTIFICATION In case of high ceiling installation If the ceiling height exceeds 3.5m (3.8m for AP024 type), adjustment of the air volume is necessary. When using the equipment at the first time, it will take a lot of time that the remote controller accepts an Set up the high ceiling.

  • Page 30: Test Run

    TEST RUN APPLICABLE CONTROLS Before test operation Change of lighting term of filter sign Group control WARNING According to the installation condition, the lighting term In a group control, a remote controller can control up • Before turning on the power supply, carry out the following items. To protect the compressor at of the filter sign (Notification of filter cleaning) can be to maximum 8 units.

  • Page 31: Troubleshooting

    TROUBLESHOOTING TEST RUN In case of wireless remote controller Confirmation and check CODE No. When a trouble occurred in the air conditioner, the Procedure Description check code and the indoor unit No. appear on the UNIT No. display part of the remote controller. Remove a small screw which fixes the nameplate of the receiver unit.
  • Page 32 TROUBLESHOOTING Check code Wireless remote controller Check method Sensor block display Main Outdoor 7-segment display Check code name Judging device AI-NET central On the remote controller (Main remote controller, Central control remote controller) and the interface P.C. board of remote of receiving unit controller control display...
  • Page 33 Group control branching unit error Differs according to error contents of unit with occurrence of alarm TCC-LINK AI-NET central control Main — — (L20 is displayed.) Duplicated central control addresses remote controller remote controller Terminology TCC-LINK : TOSHIBA Carriea Cominication Link.
  • Page 34 MAINTENANCE For maintenance, be sure to turn off the main power switch. CAUTION Do not handle the buttons with wet hands; otherwise an electric shock may be caused. <Daily maintenance> Cleaning of air filter CODE No. • [FILTER] is displayed on the remote controller, maintain the air filter.

  • Page 35: Refrigeranting Cycle Diagram

    4. REFRIGERANTING CYCLE DIAGRAM Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) Functional part name Functional outline Pulse Motor Valve (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation 2) Controls under cool in heating operation...

  • Page 36: Control Outline

    5. CONTROL OUTLINE 5-1. Control Specifications Item Outline of specifications Remarks Power supply (1) Distinction of outdoor unit is reset. When the power supply is reset, the outdoor units are distinguished, and control is exchanged according to the distinctive results. (2) Check code clear When the power supply is reset, the check code is also reset once.
  • Page 37 Item Outline of specifications Remarks Prevention of (1) In all heating operation, the upper limit of the fan tap is set by cold air one with higher temperature of TC2 sensor and TCJ sensor. discharge • When B zone has continued for 6 minutes, the operation •...
  • Page 38 Item Outline of specifications Remarks Recovery control (1) The indoor unit which stops operation, thermostat is OFF, • Recovery operation is for cooling or operates in FAN mode opens PMV of the indoor unit by usually executed every 2 refrigerant and oil the specified opening degree when cooling refrigerant or oil hours.
  • Page 39 Item Outline of specifications Remarks “ ” and “ ” <Operation standby> ..Display on remote controller • “ ” goes on. display (1) • “P05” is one of displays of power wire missing. (Operation and • “P05” of power cable is detected. heating stand-by) •...

  • Page 40: Applied Control

    6. APPLIED CONTROL 6-1. Setup of Selecting Function in Indoor Unit (Be sure to Execute Setup by a Wired Remote Controller) <Procedure> Execute the setup operation while the unit stops. TEMP. ON / OFF TIMER SET MODE TIME SWING/FIX VENT FILTER RESET TEST SET CL...
  • Page 41 Table: Function selecting item numbers (DN) (Items necessary to perform the applied control at the local site are described.) Item Description At shipment Filter display delay 0000 : None 0001 : 150H According to type timer 0002 : 2500H 0003 : 5000H 0004 : 10000H Dirty state of filter 0000 : Standard...
  • Page 42 TYPE Indoor unit capacity Item code [10] Item code [11] Setup data Type Abbreviated Setup data Model Model name 0007 0000 1-way Air Discharge Cassette MMU-AP XXX SH 0009 0011 6-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E) [Wiring and setup] •...
  • Page 43 n Ventilating fan control from remote controller [Function] • The start/stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system. • The fan can be operated even if the indoor unit is not operating. •...
  • Page 44 n Leaving-ON prevention control [Function] • This function controls the indoor units individually. It is connected with cable to the control P .C. board of the indoor unit. • In a group control, it is connected with cable to the indoor unit (Control P .C. board), and the item code set to the connected indoor unit.

  • Page 45: Troubleshooting

    7. TROUBLESHOOTING 7-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models Super Heat Recovery Multi type models (Indoor unit: MMX-APXXX, Outdoor unit: MMY-MAPXXXFT8) 2) Required tools / measuring devices • Screwdrivers (Philips, Minus), spanner, radio pinchers, nipper, push pin for reset switch, etc. •...

  • Page 46: Check Code List

    7-2. Check Method On the remote controller (Main remote controller, Central control remote controller) and the interface P .C. board of the outdoor unit, a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P .C. board) to display the operation is provided. Therefore the operation status can be known. Using this self-diagno- sis function, a trouble or position with trouble of the air conditioner can be found as shown in the table below.
  • Page 47 Check code Wireless remote controller Sensor block display Outdoor 7-segment display Judging of receiving unit Main remote Check code name AI-NET central device controller control display Operation Timer Ready Flash display Sub code ¤ ¤ — — Indoor TCJ sensor error Indoor ¤...
  • Page 48 Check code Wireless remote controller Sensor block display Outdoor 7-segment display Judging Main remote of receiving unit Check code name AI-NET central device controller control display Operation Timer Ready Flash display Auxiliary code ¤ ¤ — — Indoor fan motor error Indoor ¤...
  • Page 49 New check code 1. Difference between the TCC LINK and AI-NET check code The displaying method of the check code changes in this model and after. AI-NET check code TCC Link Used characters Hexadecimal notation, 2 digits Alphabet + Decimal notation, 2 digits Characteristics of code Few classification of communication/ Many classification of communication/incorrect setup system...
  • Page 50 7-3. Troubleshooting by Check Display on Remote Controller In case of wired remote controller (RBC-AMT31E) 1. Confirmation and check When a trouble occurred on the air conditioner, CODE No. the check code and the indoor unit No. are UNIT No. displayed on the display section of the remote controller.
  • Page 51 In case of central remote controller (TCB-SC642TLE) ZONE ZONE GROUP CODE 1234 TEST UNIT No. SET DATA SETTING R.C. GROUP SELECT ZONE 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller.
  • Page 52 In case of AI-NET central remote controller 1. Operation for CHECK display When pushing the CHECK switch, the indoor unit No. (Network address No.) including the check data is displayed in the UNIT No. display section, and the check code is displayed in the set up temp. display section. CHECK switch Push for 0.5 seconds to display CHECK code.
  • Page 53 7-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit (7-Segment Display of Interface) Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main AI-NET position remote central control controller Check code remote controller Sub-code...
  • Page 54 Check code Detected Main Outdoor 7-segment display AI-NET Check code name Status Error detection condition Check item (position) position remote central control controller Check code Sub-code remote controller 01: Indoor/outdoor Automatic address start All stop • When indoor automatic address started, other •...
  • Page 55 Check code Detected Check code Status Error detection condition Check item (position) Outdoor 7-segment display Main AI-NET position name remote central control controller Check code remote controller Sub-code 01: IPDU1 error IPDU All stop Communication of each IPDU • Check connection of communication connector and communication (P .C.
  • Page 56 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main AI-NET position remote central control controller Check code remote controller Sub-code 01: Compressor 1 side IPDU TH sensor error All stop • Resistance value of sensor is •...
  • Page 57 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main AI-NET position remote central control controller Check code remote controller Sub-code 01: Compressor 1 side IPDU Current detection All stop While header compressor •...
  • Page 58 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main AI-NET position remote central control controller Check code remote controller Sub-code — Protection for oil All stop The operating compressor <Check all the outdoor units in the corresponding line.> level drop detection detected oil shortage •...
  • Page 59 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main AI-NET position remote central control controller Check code remote controller Sub-code 01: TK1 oil circuit system error Oil level detective circuit system error All stop Temperature change of TK1 •...
  • Page 60 Check code Detected Main Outdoor 7-segment display AI-NET Check code name Status Error detection condition Check item (position) position remote central control controller Check code Sub-code remote controller No. of indoor units with priority Duplicated indoor units with All stop Indoor units with priority were •...
  • Page 61 Check code Detected Check code Outdoor 7-segment display Status Error detection condition Check item (position) Main AI-NET position name remote central control controller Check code remote controller Sub-code — — Indoor Indoor fan Corresponding • Check the lock of fan motor (AC fan). motor error unit only stops.
  • Page 62 Check code Detected Check code Outdoor 7-segment display Status Error detection condition Check item (position) Main AI-NET position name remote central control controller Check code remote controller Sub-code 01: Compressor IPDU Heat sink All stop IGBT built-in temp sensor (TH) •...
  • Page 63 Check code Detected Check code Error detection Outdoor 7-segment display Status Check item (position) Main AI-NET position name condition remote central control controller Check code remote controller Sub-code — Discharge All stop Discharge temperature • Check full opening of outdoor service valves (gas side, liquid side). temp TD2 error (TD2) exceeded 115°C.
  • Page 64 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main AI-NET position remote central control controller Check code remote controller Sub-code 0: IGBT shortage FAN-IPDU Outdoor fan IPDU All stop (Sub-code: 0) • Check fan motor. (Interphase short-circuit) error 1: Position detection •...
  • Page 65 Error detected by TCC-LINK central control device Check code Error detection Outdoor 7-segment display Detected position Check code name Status Check item (position) Display on AI-NET condition central control central control device remote controller Sub-code • Check central control device error. —...
  • Page 66 Cautions when servicing for compressor 1. Removing wires of both compressors check output of the inverter as described below. How to check inverter output 1. Turn off the power supply. 2. Remove the compressor lead cables from the compressors. (Be sure to remove lead cables of both compressors.) 3.

  • Page 67: Diagnosis Procedure For Each Check Code

    7-5. Diagnosis Procedure for Each Check Code Check code Check code name Cause of operation [E03] / [97] Communication error between No communication from remote controller and Check code Check code name Cause of operation indoor and remote controller communication adaptor (d07 / AI-NET) (Detected at indoor side) [E01] / [–]...
  • Page 68 Check code Check code name Cause of operation Check code Check code name Cause of operation [E06] / [04] Decreased number of indoor units [E07] / [–] Indoor/Outdoor 1. Communication lines (U1, U2) connection 1. Indoor/outdoor communication end terminal error between indoor and outdoor communication circuit error resistance setup error (d07 / AI-NET)
  • Page 69 Check code Check code name Cause of operation Check code Check code name Cause of operation [E08] / [96] Duplicated indoor addresses [E12] / [42] Automatic address start error Indoor addresses are duplicated. 1. When indoor automatic address started, other refrigerant circuit system was setting (d07 / AI-NET) (d07 / AI-NET) automatic address.
  • Page 70 Check code Check code name Cause of operation Check code Check code name Cause of operation [E16] / [89] Connected indoor units [E18] / [97/99] Communication error between 1. There are 48 or more connected indoor units. Regular communication between indoor header capacity over indoor header and follower and follower is unavailable.
  • Page 71 Check code Check code name Cause of operation Check code Check code name Cause of operation [E20] / [42] Unit connected to other line When starting automatic indoor address, a [E25] / [15] Duplicated address setup of Addresses are duplicated by manual setting of during automatic address device in other line is connected.
  • Page 72 Check code Check code name Cause of operation Check code Check code name Cause of operation [E31] / [CF] IPDU communication error 1. Connection error of communication line [F01] / [0F] Indoor TCJ sensor error TCJ sensor Open/Short between IPDU and I/F P.C. board (d07 / AI-NET) (d07 / AI-NET) 2.
  • Page 73 Check code Check code name Cause of operation Check code name Check code name Cause of operation [F04] / [19] TD1 sensor error [F10] / [0C] Indoor TA sensor error TD1 sensor Open/Short TA sensor Open/Short (d07 / AI-NET) (d07 / AI-NET) This error code means detection of Open/Short of TD1 sensor.
  • Page 74 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [F15] / [18] Outdoor temp sensor miscabling 1. Misinstallation and misconnection of TE1 [F23] / [43] Ps sensor error Output voltage error of Ps sensor (TE1, TL) sensor and TL sensor (d07 / AI-NET)
  • Page 75 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [H02] / [1d] Compressor error (Lock) [F31] / [1C] Outdoor EEPROM error 1. Outdoor unit power line error 1. Outdoor unit power error (Voltage, noise, etc.) (d07 / AI-NET) (d07 / AI-NET) 2.
  • Page 76 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [H04] / [44] Compressor 1 case thermo operation [H06] / [20] Low-pressure protective operation 1. Case thermo circuit error 1. Service valve close (d07 / AI-NET) 2.
  • Page 77 Check code name Check code name Cause of operation In some cases, it may be difficult to check the leakage of clogging in the following condition of refrigerant stagnation in low ambient temperature condition. [H07] / [d7] Oil level down 1.
  • Page 78 Check code name Check code name Cause of operation (*3) Check for solenoid valve of outdoor unit (For multiple outdoor unit system) [H08] / [d4] Oil level detective TK1 to TK4 sensor Open/Short a) Clogging check for SV3A valve temperature sensor error (d07 / AI-NET) •...
  • Page 79 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [H16] / [d7] Oil level detective circuit system error [H16] / [d7] TK3 temperature detective circuit error 1. Detachment of TK2 sensor, miscabling, 1.
  • Page 80 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [H16] / [d7] TK4 temperature detective circuit error [L04] / [96] Duplicated setup of outdoor line address 1. Detachment of TK4 sensor, miscabling, Outdoor line addresses are duplicated.
  • Page 81 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [L07] / [99] Group line in individual indoor unit [L10] / [88] Outdoor capacity unset The group line is connected in the On the outdoor IF P .C.
  • Page 82 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [L18] / [8A] Flow selector unit system error [L29] / [CF] IPDU quantity error An indoor unit which has been operated in 1.
  • Page 83 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [L30] / [b6] Interlock in indoor unit Outside error was input. [P03] / [1E] Discharge temp TD1 error 1. Service valve of outdoor unit closed. from outside (d07 / AI-NET) (d07 / AI-NET)
  • Page 84 Check code name Check code name Cause of operation C All heating operation [P04] / [21] Actuation of 1. High-pressure SW error high-pressure SW Repair SV4 circuit. (d07 / AI-NET) 2. Service valve closed Is SV4 circuit normal? Coil error, clogging, 3.
  • Page 85 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [P07] / [1C] Heat sink overheat error [P12] / [11] Indoor fan motor error 1. Power voltage error 1. Cabling error of fan motor connector (d07 / AI-NET) 2.
  • Page 86 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [P13] / [47] Outdoor liquid back detection error [P15] / [AE] Gas leak detection 1. PMV1/PMV2 error 1. Outdoor unit service valve closed (d07 / AI-NET) 2.
  • Page 87 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [P15] / [AE] Gas leak detection [P17] / [bb] Discharge temp TD2 error 1. Outdoor unit service valve closed 1. Outdoor unit service valve closed (d07 / AI-NET) 2.
  • Page 88 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [P19] / [08] 4-way valve operation error [P20] / [22] High-pressure protective operation 1. 4-way valve error 1. Pd sensor error (d07 / AI-NET) 2.
  • Page 89 Check code name Check code name Cause of operation [P22] / [1A] Outdoor fan IPDU error 1. Fan lock (d07 / AI-NET) 2. Fan IPDU P.C. board error 3. Overload cause All heating operation 4. External cause such as blast 5.
  • Page 90 Check code name Check code name Cause of operation Check code name Check code name Cause of operation [P26] / [14] G-Tr short-circuit protection error [P29] / [16] Compressor position 1. Outdoor unit power error 1) Cable/connector connection error detective circuit error (d07 / AI-NET) 2.
  • Page 91 Check code name Check code name Cause of operation [–] / [97] AI-NET communication line error AI-NET communication line error (d07 / AI-NET) Are AI-NET X and Y Correct communication line. communication lines normal? Are connections of CN01, CN02, and CN03 connectors on network adaptor P.C.

  • Page 92: Segment Display Function

    7-6. 7-Segment Display Function n 7-segment display on the outdoor unit (Interface P.C. board) On the interface control P .C. board, 7-segment LED to check the operating status is provided on the control P .C. board. The displayed contents are changed by combining the setup numbers of the rotary switches (SW01, SW02, and SW03) on P .C.
  • Page 93 1. Data display of system information (Displayed on the header outdoor unit only) SW01 SW02 SW03 Display contents Refrigerant name Displays refrigerant name. Model with refrigerant R410A Model with refrigerant R407C System capacity [ 5] to [48] : 5 to 48HP [HP] No.
  • Page 94 2. Data display of outdoor unit information (Displayed on each outdoor unit) SW01 SW02 SW03 Display contents Error data Displays outdoor unit number: [U1] to [U4] Displays check code (Latest code only is displayed.) There is no check code: [– – –] There is sub-code: Check code [∗...
  • Page 95 3. Data display of outdoor cycle (Displayed on each outdoor unit) SW01 SW02 SW03 Display contents Pd pressure data Pd pressure (MPaG) is displayed with decimal data. (MPaG: Approx. 1/10 value of kg/cm G data) ∗. ∗ ∗ P d. ∗.

  • Page 96: Sensor Characteristics

    5. Outdoor EEPROM write-in error code display (Displayed on the header unit only) ∗ The latest error code written in EEPROM of each outdoor unit is displayed. (It is used when confirming the error code after power supply has been reset.) Set SW01 to 03 as shown in the following table, and the push SW04 for 5 seconds or more to display an error code.

  • Page 97: Configuration Of Control Circuit

    Wired remote controller (Up to 2 units) Weekly timer Display Display driver Function setup Display Function setup Key switch Key switch DC5V Remote DC5V controller Power Power Secondary communication circuit circuit battery circuit Indoor unit Network adaptor (Option) Max. 8 units are connectable. *1 Network Indoor control P.C.
  • Page 98 Indoor unit Network adaptor (Option) Wireless remote controller kit Network Sensor P.C. board Indoor control P.C. board (MCC-1402) Remote adaptor Remote Remote controller EEPROM P.C. board controller controller communication (MCC-1401) communication communication Emergent circuit Power circuit circuit operation DC20V circuit Central control DC12V AI-NET...
  • Page 99 Wired remote controller Weekly timer Display Display driver Function setup Display Function setup Key switch Key switch DC5V Remote DC5V controller Power Power Secondary communication circuit circuit battery circuit Indoor unit Network adaptor (Option) Wireless remote controller kit Network Sensor P.C. board Indoor control P.C.
  • Page 100 Filter/Option error input Microcomputer operation LED EEPROM DC fan output Power supply Optional power supply PMV output Remote controller power supply LED DC fan return Drain pump output Float SW Fan output TCJ sensor EXCT Remote controller inter-unit cable HA (T10) TC1 sensor TA sensor Used for...
  • Page 101 8-1-3. Optional Connector Specifications of Indoor P.C. Board Connector Function Specifications Remarks  Humidifier output CN66 DC12V In heating, thermo ON, Fan ON, Humidifier output ON * Humidifier provided, Drain pump ON is set up by CN70 ‚ Output short-circuit or from remote controller. (DN=40) ...

  • Page 102: Detachments

    9. DETACHMENTS MMU-AP0152SH, AP0182SH, AP0242SH Ceiling panel: RBC-US21PGE Part name Procedure Remarks  Suction grille REQUIREMENT Be sure to put on gloves when working; otherwise an injury may be caused. Knob Knob Knob 1. Detachment 1) Stop operation of the air conditioner, and then turn off switch of the breaker.
  • Page 103 Part name Procedure Remarks ƒ Adjust cap 1. Detachment  1) Perform work of procedure 1. of 2) Take off fixing screws. (Ø4 × 12, 2 pcs) 3) Hold handle of the cap, and then slide it toward suction side to remove cap. 2.
  • Page 104 Part name Procedure Remarks … Electric parts 1. Detachment ‚ 1) Perform work of procedure 1. of Fixing screw 2) Take off the fixing screws. (Ø4 × 8, 4 pcs) 3) Remove the cord clamp on the ceiling surface, pull the electric parts box down- ward, and then hook the hooking claw at the rear side to square hole of the panel.
  • Page 105 Part name Procedure Remarks † Control P.C. 1. Detachment Card edge spacer … board 1) Perform work of procedure 1. of 2) Remove connectors connected from the control P.C. board to other parts. NOTE) Be sure to unlock the lock of the housing before removing the connector.
  • Page 106 Part name Procedure Remarks ‡ Fan motor fan 1. Detachment ‚ 1) Perform work of procedure 1. of Hooking claw 2) Remove clamps of the lead wires which are connected to the following connectors of the control P.C. board. NOTE) Be sure to unlock the lock of the housing before removing the connector.
  • Page 107 Part name Procedure Remarks ˆ Drain pan 1. Detachment „ 1) Perform work of procedure 1. of 2) Remove the drain cap, and then drain the drain water accumulated in the drain pan. NOTE) When removing the drain cap, be sure to catch drain water using bucket, etc.
  • Page 108 Part name Procedure Remarks ‰ Drain pump 1. Detachment ˆ 1) Perform work of procedure 1. of CN68 2) Remove clamps of the lead wires con- CN34 nected to the following connectors of the control P.C. board. NOTE) Be sure to unlock the lock of the housing before removing the connector.
  • Page 109 Part name Procedure Remarks Š PMV motor 1. Detachment Relay connector ˆ 1) Perform work of procedure 1. of (In vinyl tube (Black)) Banding band 2) Remove the relay connector of PMV motor. (As the relay connectors are connected in the vinyl tube, cut off the banding band fixing the both ends of the tube and shift the tube to remove relay connector.)

  • Page 110: Board Exchange Procedures

    10. P.C. BOARD EXCHANGE PROCEDURES 10-1. Exchange of P.C. Board for Indoor Service Part code Model type P.C. board model Label display on P.C. board MMU-AP 1H series MMC-AP 1H series 431-6V-269 MMK-AP 1H series MCC-1402 03DD M03 MMD-AP 1SPH/SH series MMU-AP 2SH series Requirement at exchange of P.C.
  • Page 111 Method 2 Before exchange, it is impossible to read out the setup contents due to EEPROM error. Exchange of P .C. board for service & power ON: Procedure 2 ò Writing-in of the setup data such as the model name, capacity code, indoor unit address high ceiling setup, connection setup of option, etc to EEPROM based upon customer’s information: Procedure 3 ò...
  • Page 112 Procedure 2 : Exchange of P.C. board for service 1. Exchange P .C. board with a P .C. board for service. In this time, the jumper line (cut) setup or the (short-circuit) connecting connector setup on the previous P .C. board should be reflected on P.C.
  • Page 113 Procedure 3 : Writing-in of setup contents to EEPROM (The EEPROM contents which are installed on the service P .C. board have been set up at shipment from the factory.) TEST 1. Push buttons simultaneously for 4 seconds or more. is displayed in the UNIT No box.) In this time, is displayed in the item code (DN).
  • Page 114 <Make a note of the setup contents. (Item code list (Example))> Item Memo Setup at shipment from factory Filter sign lighting time According to type Dirty condition of filter 0000: Standard Central control address 0099: Undefined Heating inlet temp. shift 0002: +2°C (Floor standing: 0) * Automatic selection Cooling Auto mode existence...

  • Page 115: Exploded Views And Parts List

    Air Filter 43107254 Hinge, Glille Inlet 43108014 Base, Receiver, ABS 43107255 Hook, Glille Inlet 43401025 Cover Ass’y 43408033 Mark, TOSHIBA 43401026 Cover Ass’y 43419015 Supporter, Outlet, ABS 43419011 Cover, Motor, PS 43419016 Supporter, Shaft, POM 43419012 Panel, Air Outlet, PS-F...
  • Page 116 11-2. 1-Way Discharge Cassette Type 201, 233 203, 204 236, 238 TEST SETTING GROUP SELECT ZONE AP0152SH, SH-K / AP0182SH, SH-K AP0242SH, SH-K 213, 230, 215 214, 226, 229 227, 218, 216 217, 219, 228...
  • Page 117 Model Name MMU-AP Location Part Description 0152SH(-K) 0182SH(-K) 0242SH(-K) 43121703 Pump, Drain, ADP-1409, 220–240V 43172182 Pan Ass’y, Drain 4314J255 Refrigeration Cycle Ass’y 4314J256 Refrigeration Cycle Ass’y 43121715 Motor, Fan, SWF-280-60-1, 60W 43146555 Motor, P .M.V., EDM-MD12TF-3 43146671 Valve, P.M.V., EDM-B40YGTF-30 43120222 Fan, Multi Blade, 140DIA, 180L 43170232...
  • Page 118 L301 R420 T301 IC330 D306 SG301 F302 C318 C380 C307 C381 R420 F301 IC340 D340 C302 IC341 D341 DB301 R330 C312 C309 IC342 C301 R302 D342 C329 IC302 C322 IC312 IC311 IC10 IC308 IC41 C202 C325 C201 R329 Q343 Q344 Q345 IC01 Q201...
  • Page 119 TOSHIBA CARRIER CORPORATION 2 CHOME 12-32, KONAN, MINATOKU, TOKYO, 108-0075, JAPAN Copyright © 2005 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

This manual is also suitable for:

Mmu-ap0242sh-kMmu-ap0152sh-kMmu-ap0182shMmu-ap0182sh-kMmu-ap0242sh

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