Toshiba MMU-AP0091H - Manuals

5 Before troubleshooting or repair work, check the earth wire is connected to the earthterminals of the main unit, otherwise an electric shock is caused when a leak occurs.If the ear th wire is not correctly connected, contact an electric engineer for rework. Do not modify the products.Do not also d...

6 After the work has finished, be sure to use an insulation tester set (500V mugger) tocheck the resistance is 2M Ω Ω Ω Ω Ω or more between the charge section and the non-charge metal section (Earth position).If the resistance value is low, a disaster such as a leak or electric shock is caused at us...

7 • 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 ofrefrigerant, th...

8 5. Recharge of Refrigerant When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in theprocedure as described below. Q Never charge the refrigerant over the specified amount. R Do not charge the additional refrigerant.If charging refrigerant additionall...

9 1. OUTLINE “Super Heat Recovery Multi System” is a multi air conditioning system which enables eachindoor unit in a refrigerant line to independently select cooling or heating operation.As it is able to operate simultaneously in cooling and heating modes, further heat recoverybecomes possible. Thi...

10 1-1. Component Multi Using High-efficiency Refrigerant R410A 1. Outdoor units Inverter unit Corresponding HP 8 HP 10 HP 12 HP Appearance Model name Heat pump MMY- MAP0802FT8 MAP1002FT8 MAP1202FT8 Cooling capacity (kW) 22.4 28.0 33.5 Heating capacity (kW) 25.0 31.5 37.5 No. of connectable indoor u...

11 4. Flow selector units (FS unit) * Accessory par t (Sold separately): Connection cable kit (RBC-CBK15FE), up to 15m. 5. Indoor units Model name Usage Appearance RBM-Y1121FE Capacity rank for indoor unit : Type 007 to 030 RBM-Y1801FE Capacity rank for indoor unit : Type 036 to 056 RBM-Y2802FE Capa...

13 n Remote controllers Receiver section ON / OFF FAN TEMP. SWING/FIX TIME MODE VENT UNIT SET CL FILTERRESET TEST TIMER SET CODE No. UNIT No. TEST SETTING DATA SET R.C. No. H ˚C˚F TEST SETTING WEEKLY TIMER ERROR SuMoTu WeTh Fr Sa PROGRAM1 PROGRAM2 PROGRAM3 ADR ADR ADR Receiver section Receiver secti...

14 2.WIRING DIA GRAM 2-1. Indoor Unit 2-1-1. 4-wa y Air Disc har g e Cassette T ype Model: MMU-AP0091H, AP0121H, AP0151H, AP0181H, AP0241H, MMU-AP0271H, AP0301H, AP0361H, AP0481H, AP0561H CN104 (YEL) CN102 (RED) CN101 (BLK) 1 2 3 4 51 2 3 4 5 1 2 3 4 51 2 3 4 5 1 2 3 4 51 2 3 4 5 1 2 3 4 5 61 2 3 4 ...

18 2-1-4. 1-wa y Air Disc har g e Cassette T ype Model: MMU-AP0152SH, AP0182SH, AP0242SH 1 3 1 3 CN104 (YEL) TA 2 1 2 1 CN102 (RED) TCJ 2 1 2 1 CN101 (BLK) CN100 (BRW) 1 3 CN80 (GRN) TC2 PNL EXCT 2 1 CN73 (RED) 2 2 1 Filter CN70 (WHI) 2 1 2 1 TC1 1 2 1 2 3 4 5 6 1 2 3 4 5 CN061 (YEL) 1 2 3 4 5 6 CN6...

22 2-1-8. High W all T ype Model: MMK-AP0071H, AP0091H, AP0121H, AP0151H, AP0181H, AP0241H FMTATC1,TC2,TCJPMVLMRY303 Fan motorIndoor temp sensorTemp sensorPulse motor valveLouver motorLouver control relay Symbol Parts name Color indication RED : REDWHI : WHITEYEL : YELLOWBLU : BLUEBLK : BLACKGRY : G...

27 2-1-12. Slim Duct T ype Model: MMD-AP0071SPH, AP0091SPH, AP0121SPH, AP0151SPH, AP0181SPH Control P.C. board for undoor unit MCC-1402 FMTATC1,TC2,TCJRY302PMVDMFS Fan motorIndoor temp sensorTemp sensorDrain control relayPulse motor valveDrain pump motorFloat switch Symbol Parts name 5 4 1 5 55 4 3 ...

28 RED : REDWHI : WHITEYEL : YELLOWBLU : BLUEBLK : BLACKGRY : GRAYPNK : PINKORN : ORANGEBRN : BRWNVLT : VIOLET Noise filter P.C. board MCC-1366 Fan IPDUMCC-896 Interface control P.C. board (I/F) MCC-1429 Power supply terminal Comp. IPDU No.1 MCC-1502 MG- SW OCR Comp. IPDU No.2 MCC-1502 Power supply ...

29 2-3. Flo w Selector Unit (FS Unit) Model: RBM-Y1122FE, Y1802FE, Y2802FE SVDD SVD SVD SVS SVS SVS SVSS SVDD SVSS SVD COM SVS S(N) R(L) 99 77 5 5 33 4 5 5 4 3 1 2 3 2 1 11 33 11 1 1 3 3 4 5 2 1 3 5 1 2 3 4 RBM-Y1802FE only RBM-Y2802FE only RBM-Y2802FE only Earth screw WHI ORN BLU YEL BRW CN10 (WHI)...

30 3. PARTS RATING 3-1. Indoor Unit 4-way Air Discharge Cassette Type Model MMU-AP 0091H 0121H 0151H 0181H 0241H 0271H 0301H Fan motor SWF-230-60-1 Drain pump motor ADP-1409 Float switch FS-0218-102 TA sensor Lead wire length : 155mm TC1 sensor Ø4 size lead wire length : 1200mm Vinyl tube (Blue) TC2...

31 1-way Air Discharge Cassette (Compact type) Type Model MMU-AP 0071YH 0091YH 0121YH Fan motor AF-200-22-4N-1 Running capacitor for fan motor AC 400V, 1µF Drain pump motor PJD-05230TF-1 Float switch FS-0208-602 Control P.C. board transformer TT-13 Pulse motor EDM-MD12TF-3 Pulse motor valve EDM-B25Y...

32 Concealed Duct High Static Pressure Type Model MMD-AP 0181H 0241H 0271H 0361H 0481H Fan motor STF-200-160-4B STF-200-160-4A STF-200-260-4C STF-200-260-4B Running capacitor for fan motor AC 500V, 4µF AC 400V, 8µF AC 450V, 6µF AC 400V, 8µF Drain pump motor ADP-1409 Float switch FS-0218-102-6 Pulse ...

33 Floor Standing Cabinet Type Model MML-AP 0071H 0091H 0121H 0151H 0181H 0241H Fan motor AF-200-19-4F AF-200-45-4F AF200-70-4K Running capacitor for fan motor AC450V, 1.2µF AC400V, 1.8µF AC450V, 2µF Transformer TT13 Pulse motor EDM-MD12TF-3 Pulse motor valve EDM-B25YGTF EDM-B40YGTF TA sensor Lead w...

34 3-2. Outdoor Unit 3-3. Outdoor Control Unit 3-4. Flow Selector Unit (FS Unit) Model MMY- MAP0802FT8 MAP1002FT8 MAP1202FT8 Compressor DA421A3FB-23M Output: : 3.75kW × 2 4-way valve coil (Heat pump only) LB64046 AC220-240V 50Hz Pulse motor valve coil VPV-MOAJ524C0 HAM-MD12TF-3 DC12V AC220–240V 50Hz...

35 3-5. P a rts La y out in Outdoor Unit Low pressure sensor SV3E valve SV3C valve TK1, TK2 sensor TK3 sensor TK4 sensor TS2 sensor SV2 valve SV3D valve SV11 valve SV6 valve SV42 valve SV41 valve High pressure SW1 High pressure SW2 TD1 sensor TD2 sensor SV3A valve SV3B valve TL sensor TO sensor TE s...

36 2-way discharge/3-way discharge2-way discharge or 3-way discharge can be selected according to the shape or arrangement of the room. For details, consult with the dealer from which you have purchased the air conditioner. Air outlet/Air outlet louverSelect air flow direction in cooling or heating ...

37 Air outlet/Air outlet louverChanges the direction of the air flow. Earth screwSituated inside the electric parts box. Air inlet grille Air filterFilters dust and other trash.(Situated inside the air grille.) Air outlet port Drain pan (With drain filter)This accessory is installed at the local sit...

38 Operation section Push each button to select the desired operation. This remote controller can operate up to a maximum 8 indoor units. • The remote controller can memorize user settings and can be recalled and activated by a single press of the ON / OFF button. 1 Fan mode select button Selects th...

39 REQUIREMENT [In Cooling operation] • The operation star ts after approximately 1 minute. [In Heating operation] • In heating operation, the fan operation may continue for approximately 30 seconds after the air condi- tioner has stopped. • The indoor fan continues in preheat operation for 3 to 5 m...

41 Right/Left air direction adjustment To change the air outlet direction to the right or left side, set the ver tical louver located behind the horizontallouver to the desired direction. INFORMATION • If cooling operation is performed with a donwards discharge, dew may form on the surface of the ca...

42 Floor Standing Type Adjustment of air Flow direction upwards/downwards [In Cooling operation] In cooling operation, move the louver with your hands so that the horizontalair outlet points in a direction so that the cold air diffuses the entire room. [In Heating operation] In heating operation, mo...

44 Push the air filter, and pull it downward. Front panel (Lower) Air filter knob Filter holder High Wall Type (Model : 1H series) • Push the projection at the center of the air filter. • Undo the clip on the air filter, pull the air filter downwards while pushing it towards the main unit side. (Mod...

45 If you do not plan to use the unit for more than 1 month 1. Operate the fan for 3 to 4 hours to dry the inside of the unit • Operate “FAN” mode. 2. Stop the air conditioner and turn off the main power supply or the circuit breaker. Checks before operation 1. Check that the air filters are install...

46 Air conditioner operating conditions For specified performance, operate the air conditioner under the following temperature conditions: 3-14. Re-Installation DANGER If the unit position is to be changed and re-located to a new position ask your local dealer orinstallation specialist. Do not attem...

48 4. REFRIGERANT PIPING SYSTEMATIC DRAWING 4-1. Inverter Unit (8, 10, 12HP) Model: MMY-MAP0802FT8, MAP1002FT8, MAP1202FT8 Capillary tube Capillary tube Capillary tube Capillary tube FM Propeller fan Fan motor Sensor (TO) Sensor (TS1) Sensor (TS2) Sensor (TL) Sensor(TE1) (Right side) Main heat excha...

50 Functional part name Functional outline High pressure sensor (Connector CN501: Red)1) Detects high pressure and uses it to control the capacity of the compressor.2) Detects high pressure during all cooling operation and uses it to control the fan when cooling with low outside air. 3) Detects unde...

51 * RBM-Y1801FE has two “SVS” valves. Check valve Strainer SVS SVSS SVDD SVD Liquid pipe Strainer Discharge gas pipe Suction gas pipe To indoor gas side To indoor liquid side Strainer Capillary tube Capillary tube Capillary tube Check valve Strainer SVS SVS SVSS SVDD SVD Liquid pipe Strainer Discha...

52 4-3. Indoor Unit Functional part name Pulse Motor Valve PMV Temp. sensor 1. TA 2. TC1 3. TC2 4. TCJ Functional outline (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation2) Controls under cool in heating operation3) Recovers refrigerant oil in cooling operation4) Recovers ref...

53 5. SYSTEM REFRIGERANT CYCLE DRAWING 5-1. Refrigerant Piping Systematic Diagram in System Selection of operation mode For the selection of each operation mode, refer to the below table: “Stop Once” this means the system does not operate for 3 minutes after operation before update has stopped. Note...

54 5-2. All cooling operation (Operation of cooling only) In high outside temperature (10°C or more: Criterion) (Note 1) SV4 on the stopped compressor is ON. Outdoor unit Flow selector/Indoor unit 4-way valve OFF SV3A OFF Cooling thermo.-ON Stop SV4 (n) (Note 1) SV3B OFF SVD OFF SVD OFF SV5 OFF SV3C...

64 6-2. Outdoor Unit 6-2-1. Operation Start/Operation End The compressor, solenoid valve, pulse motor valve (PMV), outdoor fan, etc. are controlled by a command fromthe indoor controller. The follower outdoor unit star ts/stops by a command from the header outdoor unit. PMV opening 45 90 500 550 100...

69 Other cautions 1. Cooling operation in low ambient temperatures 1) The indoor unit freeze prevention control system (TC sensor) may decrease the command frequency to the outdoor unit when low coil temperatures are detected. 2) The cooling capacity control may decrease the command frequency to the...

70 Oil equation control schematic diagram Unit to send oil Unit to received oil FM Sensor TO TS1 TS2 TL Main heat exchanger * SV2 SV12 TE1 SV5 SV41 SV3A SV3E SV3B SV3D SV6 SV11 SV3C 4-Way valve OFF Accumulator Pd sensor Pd sensor TK1 TK4 TK3 SV42 HP HP Compressor 2 (Inverter) Compressor 1 (Inverter)...

71 7. APPLIED CONTROL 7-1. Indoor Unit 7-1-1. 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. 1 Push SET , CL , and TEST buttons simultaneously for 4 seconds or more. The firstly di...

73 TYPE Item code [10] Type 1-way Air Discharge Cassette 4-way Air Discharge Cassette 2-way Air Discharge Cassette 1-way Air Discharge Cassette (Compact type) Concealed Duct Standard Slim Duct Concealed Duct High Static Pressure Under Ceiling High Wall Floor Standing Cabinet Floor Standing Concealed...

75 Control wiring between indoor unit and FS unit Piping Remote controller FS unit Group control Indoor unit Control wiring between indoor unit and FS unit Piping Piping Remote controller FS unit Group control Indoor unit Control wiring between indoor unit and FS unit FS unit NG NG Piping Remote con...

76 Cooling operation Hot air Cooling operation Hot air Heating operation Hot air FS unit SVS SVD SVSS Suction gas pipe Liquid pipe Discharge gas pipe SVDD Indoor unit Control wiring between indoor unit and FS unit High-pressure gas Liquid Liquid Liquid Liquid High-pressure gas High-pressure gas High...

77 7-1-4. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E) [Wiring and setup] • Use the exclusive connector for connection with the indoor control P.C. board. • In a group control, the system can operate when connecting with any indoor unit (Control P.C. board) in th...

78 n Ventilating fan control from remote controller [Function] • The star t/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. • Use a fan wh...

79 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 - is set to the c...

80 7-2. Outdoor Unit 7-2-1. Applied Control in Outdoor Unit The following functions become available by setting the switches on the outdoor interface P.C. board. No. 1 Function Outdoor fan high static pressure shift Switch No. SW10 Bit 2 Interface P.C. board of outdoor unit SW10 Bit 2 For setup of o...

81 7-2-2. Applied Control in Outdoor Unit The following functions are available by using a separately supplied P.C. board. Set up the switches on the outdoor unit (U1). Outdoor unit interface P.C. board SW07 Bit 1 Bit 2 For power peak-cut control selection For power peak-cut control (expansion) sele...

82 7-2-2-1. Power Peak-cut Control (Standard) Setup when Power peak-cut control requested Power peak-cut control board (TCB-PCDM2E) Power peak-cut ON signal is input. Power peak-cut OFF signal is input. SW1 SW2 L1 ON OFF ON OFF ON OFF Outdoor unit interface P.C. board SW07: Bit 1 OFF SW07: Bit 1 ON ...

83 SW07 Bit 1 Bit 2 Operation stop to 60%, 80%, 100% ON 60% to 60%, 75%, 85%, 100% Power peak-cut (expansion) ON OFF ON ON CN513 Blue 7-2-2-2. Power Peak-cut Control (Expansion) Setup at power peak-cut control (expansion) request CN513 (BLU) Header outdoor unit interface P.C. board (Setup to Header ...

85 7-2-2-5. Night Operation Control Operation Reduce emitted noise during night by resting the compressor andfan speed. The control contents are accepted during leading and trailing ofthe input signal.(The status of leading and trailing should be held for 100mm. sec.or more.)Capacity criterion durin...

86 8. TEST OPERATION 8-1. Procedure and Summary of Test Operation A test operation is executed in the following procedure. When a trouble or an error occurs in each step, removecauses of a trouble or an error referring to the section “9. Troubleshooting”. Check the basic items, mainly the installati...

87 3. Connection check between Flow Selector Unit (FS Unit) and indoor unit Note) The above figure does not cover all the electric wirings.For details, refer to the Installation Manual of Flow selector unit. U1/U2 L N A B L N L N A B Earth terminal Earth leakage breaker Power switch PullBox PullBox ...

88 8-3. Check at Main Power-ON After turning on the main power of the indoor units and outdoor unit in the refrigerant line to be executed with atest operation, check the following items in outdoor and each indoor unit. (After turning on the main power, be sure to check in order of indoor unit → → →...

89 8-4-3. Address Setup Procedure In this air conditioner, it is required to set up address to the indoor unit before starting opera-tion. Set up the address according to the following setup procedure. CAUTION 1. Set up address after wiring work. 2. It requires maximum 10 minutes (Usually, approx. 5...

90 8. How to set up the terminal resistance When all the address setups have finished in the same refriger-ant circuit system, put the terminal resistance in the samecentral control line into one. • Remain only SW30-2 of the header outdoor unit with address 1 as ON. (With end terminal resistance) • ...

91 Note 1) When setting the line address from the remote controller, do not use address 29 and 30. The address 29 and 30 cannot be set up in the outdoor unit. Therefore if they are incorrectly set up, a checkcode [E04] (Indoor/outdoor communication circuit error) is output. Confirmation of indoor un...

92 • To change all the indoor addresses from an arbitrary wired remote controller; (When the setup operation with automatic address has finished, this change is available.) Contents : Using an arbitrary wired remote controller, the indoor unit address can be changed for each same refrigerant line ∗∗...

94 8-5. Troubleshooting in Test Operation If the phenomena appear, such as a check code is output or the remote controller is not accepted in power-ONafter cabling work or in address setup operation, the following causes are considered. 8-5-1. A check Code is Displayed on the Remote Controller ( ∗ )...

96 Header unit U3/U4 Indoorunit Indoorunit Header unit U1/U2 Indoorunit A/B Indoorunit Header unit U1/U2 Indoorunit Indoorunit Header unit U1/U2 Follower unit U1/U2 Indoorunit Header unit U1/U2 Follower unit U3/U4 Indoorunit Header unit U3/U4 U1/U2 Follower unit Indoorunit Header unit U1/U2 Follower...

97 8-6. Test Operation Check 8-6-1. Fan Operation Check When an error code has been displayed on the remote controller, refer to Section 8-5-1. Check indoor fan, fan motor and fan circuit. (Ensure power has been isolated before removing any covers.) Check for items in contact with fan.(Ensure power ...

98 Wireless remote controller (Except 4-way Air Discharge Cassette type, Under Ceiling type and 1-way Air Discharge Cassette type (2 Series)) 1 Remove the screw which fixes the name plate to the receiver part on the wireless remote controller. Remove the nameplate of the receiver section by inser ti...

99 2 3, 4, 5, 6 2, 7 Be sure to set the air speed to [High] In case of wireless remote controller(for Under Ceiling type and 1-way Air Discharge Cassette type (2 Series)) Procedure 1 2 3 4 5 6 7 Description Turn on power of the air conditioner. The operation is not accepted for 5 minutes when power ...

103 1. All cooling test operation function This function is provided to change collectively the mode of all the indoor units connected to the samesystem for cooling test operation mode, using switches on the interface P.C. board of the header unit. Operation procedure [A] [C ] [B] [ –C] Power ON Be ...

105 4. Individual start/stop (ON/OFF) individual test operation function This function is provided to start/stop (ON/OFF) individually each indoor unit connected to the same systemby using switches on the interface P.C. board of the header unit. Set SW01 [16] and set SW02, SW03 to indoor address No....

106 8-7-2. Error Clearing Function 1. Clearing from the main remote controller [Error clearing in outdoor unit] Error of the outdoor unit is cleared by the unit of one refrigerant circuit system to which the indoor units oper-ated by the remote controller. (Error of the indoor unit is not cleared.) ...

107 2. Clearing from the interface P.C. board Using the switches on the interface P.C. board, this function is to clear the currently detected error for eachrefrigerant circuit system without resetting the power supply. ( → Restar t of error detection) Errors in both outdoor and indoor units are onc...

108 8-7-3. Remote Controller Distinction Function This function is provided to distinguish the remote controller connected from the outdoor unit to the indoor unitfor a refrigerant circuit system using switches on the interface P.C. board of the header unit. Distinction procedure Power ON Be sure tu...

109 8-7-4. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit This function is provided to fully open or close forcibly the PMV for 2 minutes in all indoor units, using the switchoperation on the interface P.C. board of the header unit. This function is also used to open the PMV fully...

110 8-7-6. Solenoid Valve Forced Open/Close Function in Outdoor Unit This function is provided to forcibly open/close each solenoid valve mounted in the outdoor unit by use of theswitches provided on the outdoor unit interface P.C. board. This function confirms the operation of each solenoidvalve. [...

111 8-7-7. Fan Operation Check in Outdoor Unit This function is provided to check the fan operation on the interface P.C. board in the outdoor unit. The frequencyof the fan speed can be controlled. Therefore utilize this function to check the operation or abnormal sound in the fan system. NOTE) Do n...

112 7-segment display [A] [B] Outdoor unit No. Error code display 8-7-8. Abnormal Outdoor Unit Discrimination Method <By Fan Operating Function> This function is provided to forcedly operate the fan of the outdoor unit in which an error occurred or the fan ofthe normal outdoor unit by the swit...

113 NOTE) Emergent operation should be restricted to one day or so on. If operating TO sensor fixed with this function, the system control operation of the air conditioner may not become one based upon thespecification of the product. Therefore an emergent operation should be restricted to a day or ...

114 8-7-10. Indoor Fan Operation Check Function This function is provided to check operation of single indoor unit without using communication with the remotecontroller or outdoor unit. This function can be used regardless operating or stopping of the system. However, if this function is used for a ...

115 8-7-12. Monitor Function of Remote Controller Switch When using a remote controller with the model name RBC-ATM21E, the following monitorfunctions can be used. Calling of display screen [Contents] The temperature or the operation status of the remote controller, indoor unit, or each sensor of th...

116 9. TROUBLESHOOTING 9-1. 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, Flat), spanner, longnose pliers, nipper, push pin...

117 Check code Wireless remote controller Outdoor 7-segment display Sensor block display of receiving unit Main remote controller display Auxiliary code AI-NET central control display O peration Timer Ready Flash Check code name Detecting device E01 — — — ¤ l l Communication error between indoor and...

119 Error detected by TCC-LINK central control device Check code Wireless remote controller Outdoor 7-segment display Sensor block display of receiving unit Main remote controller display Auxiliary code AI-NET central control display O peration Timer Ready Flash Check code name Detecting device P01 ...

120 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 onwards. Used characters Characteristics of codeclassification Block display AI-NET check code Hexadecimal notation, 2 digits Few classification of communicat...

121 9-3. Troubleshooting by Check Display on Remote Controller In case of wired remote controller (RBC-AMT31E) CODE No. UNIT No. R.C. No. Check code Indoor unit No. in which an error occurred 3 2 1 ON / OFF FAN TEMP. SWING/FIX TIME MODE VENT UNIT SET CL FILTERRESET TEST TIMER SET Procedure 1 2 3 Des...

122 In case of central remote controller (TCB-SC642TLE) 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on thedisplay section of the remote controller. The check code is displayed while the air conditioner operates. If th...

123 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 isdisplayed in the UNIT No. display section, and the check code is displayed in the set up temp. display section. CHECK swi...

125 Check code Outdoor 7-segment display Main remote controller Check code Sub-code AI-NET central control remote controller Detected position Check code name Status Error detection condition Check item (position) E12 E12 01: Indoor/outdoor communication 02: Between outdoors communication 42 I/F Aut...

137 Cautions when servicing for compressor 1. Removing wires of both compressors check output of the inver ter 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....

138 9-5. Diagnosis Procedure for Each Check Code Check code [E01] / [–] (TCC-L / AI-NET) Check code name Communication error between indoor and remote controller (Detected at remote controller side) Cause of operation 1. Remote controller interconnecting cable error 2. Indoor power supply error 3. I...

163 9-6. 7-Segment Display Function n 7-segment display on the outdoor unit (Interface P.C. board) On the interface control P.C. board, a 7-segment LED is provided to check the operating status. The displayed contents are changed by combining the setup numbers of the rotary switches (SW01, SW02and S...

164 G A D F B E C Dp Display A Display B F in the left figure goes on: Header requests oil equalization.C in the left figure goes on: Follower requests oil-equalization.(Outdoor unit number) U2 U3 U4 1. Data display of system information (Displayed on the header outdoor unit only) SW01 1 SW02 1 2 3 ...

166 3. Data display of outdoor cycle (Displayed on each outdoor unit) SW01 1 SW02 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SW03 2 Display contents Pd pressure data Pd pressure (MPaG) is displayed with decimal data.(MPaG: Approx. 1/10 value of kg/cm 2 G data) Ps pressure data Ps pressure (MPaG) is disp...

167 -10 10 0 20 30 40 0 10 20 30 40 50 60 70 Characteristic-3 Temperature [˚C] Outdoor TS1, TS2, TO, TL sensors Resistance [k ] 50 0 100 150 200 0 5 10 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Characteristic-4 Temperature [˚C] Outdoor TD1, TD2, TK1, TK2, TK3, TK4 sensors Resistance [k ] Re...

168 Output at high pressure side (V) Pressure (MPa) 0.5 0 3.9 5 3.33 4.41 5.1 Output at lo w pressure side (V) Pressure (MPa) 0.5 0 3.5 5 0.98 1.47 5.1 10 0 20 30 40 10 20 30 40 50 Characteristic-1 Temperature [˚C] Indoor TA sensor Resistance [k ] 50 0 100 150 200 5 0 10 15 20 -20 -30 -10 0 10 20 30...

169 9-8. Pressure Sensor Output Check 9-8-1. Outdoor Unit n Pd sensor characteristics 0 to 4.41MPa (0.5 to 5V output with 0 to 4.41MPa)Voltage check between CN501 ‚ and ƒ pins on the outdoor unit I/F P.C. board (Tester rod at ƒ pin side) VOLT 0.000.020.040.060.080.100.120.140.160.180.200.220.230.250...

170 n Ps sensor characteristics 0 to 1.48MPa (0.5 to 5V output with 0 to 1.48MPa)Voltage check between CN500 ‚ and ƒ pins on the outdoor unit I/F P.C. board (Tester rod at ƒ pin side) VOLT 0.000.020.040.060.080.100.120.140.160.180.200.220.230.250.270.290.310.330.350.370.390.410.430.450.470.490.510.5...

174 Display LCD Function setup Display LED CPU Remote controller communication circuit Remote controller communication circuit CPU H8/3039 Driver Remote controller communication circuit Key switch Powercircuit Power circuit Transformer Switch setup DC5V Display LCD LCD driver Function setup CPU Key ...

178 Remote controller communication circuit Remote controller communication circuit Emergent operation SW Function setup SW CPU CPU H8/3039 Driver Remote controller communication circuit Power circuit Transformer Switch setup Same as left *2 #2 A B L U1 U2 N L A B N U1 U2 U1 U2 Power supply Outdoor ...

180 DC fan output PMV output DC fan return *1 Float SW Flap(Used only for 4-way Air Discharge Cassette Type,Under ceiling type) Fan output Optional output HA (T10) CHK DISP TA sensor EXCT Used for servicing TC2 sensor TC1 sensor TCJ sensor Remote controller inter-unit cable Indoor/Outdoor communicat...

182 MCC-1520-01 COMPONENT SIDE IC01 16 CN01 1 6 + + + + C03 CN02 C90 I G O +15V GND Control P.C. board side (Output) Power supply trans side (Input) MCC-15202-way Air Discharge Cassette Type, 1-way Air Discharge Cassette Type (1 Series),Concealed Duct High Static Pressure Type, Floor Standing Cabine...

187 Part type Exchange contents Initial setup at shipment SW01 Rotary SW 4bit 16 step Display / Operation switch (1) For 7-segment display / service operation [1] SW02 Rotary SW 4bit 16 step Display / Operation switch (2) For 7-segment display / service operation [1] SW03 Rotary SW 4bit 16 step Disp...

188 11. BACKUP OPERATIONS (EMERGENCY OPERATION) When a trouble occurs in an outdoor unit or in one of the compressors in an outdoor unit, the malfunctioningunit or compressor stops and a backup operation (emergency operation) is available through the other function-ing outdoor units and compressors....

189 Turn on bit 1 and bit 2 of dip SW06. 11-3. Backup Setup for Outdoor Unit Outline In this model, setup of the backup operation is available in either the header unit or the follower unit in a situa-tion where the outdoor units are defective. In a system in which two or more outdoor units are conn...

190 Interface P.C. board on the outdoor unit which displays oil level judgment 1) Operation starts. 3) Result of oil level judgment is displayed. 2) Set SW01/SW02/SW03 to 1/16/1. 4) After confirmation, return SW01/SW02/SW03 to 1/1/1. 12. OIL LEVEL JUDGMENT DISPLAY The judgment result of the current ...

191 4 Set rotary SW01/02/03 to 2/11/1. [rd] [ ] are displayed. ¯ Push the push SW04 for 5 seconds or more. 5 [rd] [ FF] are displayed. Operation during pump down operation Outdoor unit Operation contents Outdoor unit with trouble Compressor stops.Outdoor fan ONPMV1 and PMV2 open.SV3A/3B/3C/3D/3E ON ...

192 9 Fully close the balance pipes of the outdoor units except the unit for pressure adjustment and unit with the malfunction. 6 Fully close the service valve of the gas pipe approx. 10 minutes after the system has started. 11 Close service valve of the gas pipe gradually while checking the low pre...

193 4 Set rotary SW01/02/03 to 2/5/1. [C. ] [ ] are displayed. ¯ Push SW04 for 5 seconds or more. 5 [C. ] [ –C] are displayed (Test cooling operation starts.) ¯ 6 Low pressure (MPa) is displayed by pushing the push SW04. Pd ® Ps ® Td1 ® Td2 ® TS ® TE ® C — C Header unit with trouble Unit selected as...

195 13-2. How to Operate the System During Repair of the Malfunctioning Outdoor Unit Procedure 1. Follow the aforementioned “13-1. Refrigerant Recovery in the Malfunctioning Outdoor Unit”. 2. Recover the refrigerant in the system by using a recovery device. The refrigerant amount to be recovered is ...

197 14. LEAKAGE/CLOGGING OF OIL-EQUALIZATION CIRCUIT Check code list for leakage, clogging of outdoor refrigerant circuit and oil circuit parts Trouble by clogging Part name Outdoor PMV Check valve of main discharge pipecollective section Check valve of discharge pipe Check valve of oil-equalization...

199 ( ) START YES NO * This flowchart is the standard for replacing compressors. Each case must be considered on individual circumstances. Replace the compressors based on the following conditions of judgement. 1. Oil of 1900 cc is charged in a compressor for service. 2. The amount of oil is 3800 cc...

200 Claw for temporary hooking M5 screws(2 positions) Hooks Positions to be removed (3 positions)(In case of right side) * Left side is same as right side Lower duct M4 screws (4 positions) Compressor/Sound-insulation mat 15-2. Replacing Compressor Exchanging a compressor When changing the compresso...

201 Compressor Oil-equation pipe Compressor Color check of oil in the defective compressor • Lay the defective compressor down, extract a little oil from the oil-equalization pipe and then check the oil colour based on theoil colour sample. • Determine the number of compressors to replace based on t...

202 Compressor When replacing both the defective and normal compressors Removal of normal compressor • Remove the normal compressor in the same way as the defective compressor. Note) • Be sure to apply insulation to the removed cable terminals with insulating tape, etc. WARNING Be aware that if oil ...

204 YES YES NO NO Check oil-equalization circuit in the following procedure once the compressor is removed. Correct miscabling or incorrect installation of the sensors:TK1: CN514/TK2: CN515TK3: CN516/TK4: CN523 Sensor error ® Exchange Is there any disconnection, mis-cabling, or incorrect installatio...

205 Capillary tube Capillary tube Capillary tube Capillary tube FM Propeller fan Fan motor Sensor (TO) Sensor (TS1) Sensor (TS2) Sensor (TL) Sensor(TE1) (Right side) Main heat exchanger Solenoid valve (SV2) Solenoid valve (SV12) Solenoid valve(SV41) Solenoid valve(SV3A) Solenoid valve(SV3E) Solenoid...

206 Discharge cabinet Screws (4 corners) 5 Suction cabinet (Front and rear) 3 Lower cabinet tab (Front and rear) 6) Side board (Right and left) 5) Suction cabinet (Front and rear) 3) Lower cabinet tab (Front and rear) 6) Side board (Right and left) 4) Service panel Discharge cabinet * Hooking tab 2 ...

207 No. 2 Part to be exchanged Propeller fanmotor Work procedure 3) Remove the flange nut fixing on the fan motor and propeller fan.(To tighten the nut, turn it clockwise.) 4) Remove the square washer. 5) Remove the propeller fan. NOTE Gently pull the straight upwards. 6) Remove the connectors (3 po...

208 No. 3 Part to be exchanged Heatexchanger Work procedure REQUIREMENT Wear protective clothing on your hands asother components may cause and injury etc. Before beginning the procedure, ensure therefrigerant has been reclaimed from theoutdoor unit, using a suitable refrigerantrecovery device. M Di...

209 2) When pushing in the lower part, be sure to check that the cable is not be stretched. 5) 2) 3 Scre Screw 3 Scre Screw 4) 4) Fixing cla Fixing claw Pull out to Pull out toward y ard you. ou. 3) Screw 3) Screw Pull out toward you. 4) Fixing claw No. 4 Part to be exchanged HeInver terassembly M R...

211 No. 5 Part to be exchanged Inver ter assembly M Removal of P.C.board andelectric par ts 5. Reactor 6. Transformer 7. Electrolytic capacitor Work procedure REQUIREMENT Wear protective clothing on your handsas other components may cause andinjury etc. 1) Stop operation, and then turn the power sup...

212 Front side TS2 sensor TS1 sensor(Grasy) TD2 sensor(Red) TD1 sensor(Yellow) Accumulator Compressor(1) Compressor(2) Rear side Oil tank SV3C SV3A SV3B Liquid tank SV3D SV2 SV6 Oil separator PS sensor SV12 SV11 PD sensor SV5 SV41 Compressor(1) SV42 Compressor(2) Front side Accumulator No. 6 Part to...

213 Rear side TK3 sensor(White) Accumulator TK1 sensor(Black)Accumulator side(Front side) TK2 sensor(Blue)Rear side Oil tank TK4 sensor(Green) Liquid tank Oil separator Ø6.35 Û Ø15.88 between SV3E valve and suction Ø6.35 Û Ø15.88 between SV3C valve and discharge pipe Ø8.0 Û Ø25.4 between SV2 valve a...

214 Push the tab side up against the rubber. Compress the rubber to release the cup. Push in the band towards the arrow mark. Align the direction of the slits and then attach to each pipe. Matching the tabs, the slide them. Align the tabs to the slit side of the rubber. Push the band against the rub...

215 4) Brazing part with SV2 assembly 6) Accumulator cover 6) Two screws each at front and rear 8) 6) 7) Cut pipe at entrance/exit ports. 3) Accumulator fixing board Middle par Middle partition board tition board Middle partition board 4) SV2 valve 3) Two screws Accumulator 2) Three screws No. 9 Par...

216 No. 10 Part to be exchanged Exchange of4-way valve Work procedure REQUIREMENT Wear protective clothing on your hands asother components may cause and injury etc. Before beginning the procedure, ensure therefrigerant has been reclaimed from theoutdoor unit, using a suitable refrigerantrecovery de...

217 17. P.C. BOARD 17-1. Indoor Unit 17-1-1. Exchange of P.C. Board for Indoor Service Part code 431-6V-207 431-6V-210 431-6V-269 Model type MMU-AP ✻✻ ✻✻ ✻✻ ✻✻ ✻✻ 1WH series MMU-AP ✻✻ ✻✻ ✻✻ ✻✻ ✻✻ 1YH series MMU-AP ✻✻ ✻✻ ✻✻ ✻✻ ✻✻ 1SH series MMD-AP ✻✻ ✻✻ ✻✻ ✻✻ ✻✻ 1H series MML-AP ✻✻ ✻✻ ✻✻ ✻✻ ✻✻ 1H ser...

218 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, ...

219 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 (shor t-circuit) connecting connector setup on the previous P.C.board should be reflected on P.C. board for service. (See the blow figures.) 2. ...

220 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.) 1. Push SET + CL + TEST buttons simultaneously for 4 seconds or more. 1 (Corresponds to number of the operation diagram of the r...

222 17-2. Outdoor Unit 17-2-1. Cautions in Service for Compressor 1. When checking the inverter output, remove the both wires of the compressor as follows. 17-2-2. How to Check Inverter Output 1. Turn off the power supply. 2. Remove the compressor lead from the compressor. (Be sure to remove lead wi...

223 17-2-4. How to Check Fan Power Supply P.C. Board and Fan IPDU The fan power supply P.C. board supplies DC power. It supplies DC280V for the fan IPDU, and DC12V andDC7V for the control power supply respectively. If the control power is not supplied, a communication error(Error code [E31]) is out....

224 17-2-5. Interface Board Replacement Procedure This service board is commonly installed in different models. If the board assembly is to be replaced, check thedisplayed inspection contents and replace the board with the correct version for the model and follow thisprocedure. Replacement steps 1. ...

225 17-2-6. Comp-IPDU Board Replacement Procedure Manual This service board is commonly installed in different models. If the board assembly is to be replaced, replace it properly in with the correct version for the model and followthis procedure. Replacement steps 1. Turn off the power supply to th...

226 17-2-7. Notice for Wiring Wiring for service shall be done according to the wiring diagram. Special caution is needed for the reactor, which has different connecting points on the COMP-IPDU1 andCOMP-IPDU2. DANGER The electrolytic capacitors in this panel are charged to 660 volts D.C. Before serv...

227 Inverter Assembly Configuration Fan IPDU Power supply P.C. board for fan Noise filter Power supply terminal block Over-current relay BUS terminal block Magnet swith Relay connector IPDU1 IPDU2 Interface P.C. board

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