CONTENTS PRECAUTIONS FOR SAFETY ..................6 1. SPECIFICATIONS ....................12 1-1. Compact 4-way cassette type ................... 12 1-2. 2-way cassette type ......................14 1-3. 1-way cassette type ......................17 1-4. Floor standing cabinet type ....................18 1-5. Floor standing concealed type ..................19 1-6.
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9. TROUBLESHOOTING .................... 91 9-1. Overview ..........................91 9-2. Troubleshooting method ....................92 9-3. Troubleshooting based on information displayed on remote controller ..... 98 9-4. Check Codes Displayed on Remote Controller and SMMS series Outdoor Unit (7- Segment Display on I/F Board) and Locations to Be Checked ........103 9-5.
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• The qualified service person is a person who installs, repairs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation...
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Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.
Warning Indications on the Air Conditioner Unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect all remote Disconnect all remote electric power supplies before servicing.
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PRECAUTIONS FOR SAFETY The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for both the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result.
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WARNIG Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person (*1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and / or other problems.
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Do not modify the products.Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. Prohibition of modification. When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications given in the Service Manual (or use the parts contained on the parts list in the Service Manual).
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After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the cabinet or panel does not catch the inner wires. If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused Assembly / at user’s side.
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When the service panel of the outdoor unit is to be opened in order for the compressor or the area around this part to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel. If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes and other parts will be very hot to the touch.
1. SPECIFICATIONS 1-1. Compact 4-way cassette type Model name MMU-UP0051MH-E(TR) MMU-UP0071MH-E(TR) MMU-UP0091MH-E(TR) MMU-UP0121MH-E(TR) Cooling Capacity (*1) Heating Capacity (*1) Electrical Power supply 220-240 ~, 50Hz / 208-230 ~, 60Hz i t s 0.16 / 0.15 0.23 / 0.21 0.24 / 0.22 0.25 / 0.23 0.016 / 0.016 0.023 / 0.023...
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Model name MMU-UP0151MH-E(TR) MMU-UP0181MH-E(TR) Cooling Capacity (*1) Heating Capacity (*1) 220-240 ~, 50Hz / 208-230 ~, 60Hz i t s 0.28 / 0.26 0.46 /0.46 0.030 / 0.030 0.052 / 0.052 0.50 / 0.47 0.80 / 0.81 l a i n i l (*2) l l e...
4. PARTS RATING Indoor unit Compact 4-way cassette type Model MMU-UP***MH-E(TR) Fan motor ICF-340D60-1 Drain pump motor MDP-1401 Float switch FS-0218-102 Pulse motor valve PAM-B25YGTF-1 PAM-B40YGTF-1 P.C. board MCC-1643 TA sensor Lead wire length: 818 mm Vinyl tube TC1 sensor Dia.4 size lead wire length: 400 mm Vinyl tube TC2 sensor Dia.6 size lead wire length: 500 mm Vinyl tube (Black)
5. REFRIGERANT CYCLE DIAGRAM Indoor unit Liquid side Gas side Cooling Heating Strainer Capillary tube Heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) Explanation of functional parts in indoor unit Functional part name Functional outline Pulse Motor Valve...
6. CONTROL OUTLINE Control Specifications Item Outline of specifications Remarks When power 1) Distinction of outdoor unit supply is reset When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2) Setting of indoor fan speed and existence of air direction adjustment Based on EEPROM data, select setting of the indoor fan...
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Item Outline of specifications Remarks Room temp. 2) By setting the CODE No. 06, the setup temperature in Return air temperature control heating operation can be compensated. shift of heating operation (Continued) Setup data Setup temp. compensation +0˚C +2˚C +4˚C +6˚C Except while sensor of the remote controller is...
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Item Outline of specifications Remarks Fan speed 1) By the command from remote control, fan speed is HH > H+ > H > L+ > L > UL selection changed. ((HH), (H+), (H), (L+), (L) or [AUTO]) 2) When the fan speed mode [AUTO] is selected, the fan Depends on fan speed mode speed varies by the difference between TA and Ts.
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Item Outline of specifications Remarks Fan speed selection Setting of height ceiling mode at CODE No. [5D] or (Continued): at SW501 on P.C. board. Compact 4-way (only UP015), 2-way, 1-way (SH) (Fan speed selection of UP012 or less and UP018 for Compact 4-way are only Standard.) Factory default Type 1 Type 3...
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Item Outline of specifications Remarks Prevention of cold 1. In heating operation, the lowest temperature between TCJ: Temperature of indoor TC1 sensor and the highest temperature between air discharge heat exchanger sensor TC2 and TCJ sensor is set as the upper bound of the •...
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Item Outline of specifications Remarks Refrigerant (Oil) Indoor units during stop/thermostat OFF or FAN Control is performed per two recovery control in operation perform following controls when a refrigerant hours or when the outdoor unit cooling operation (compressor oil) recovery signal is received from determines its need.(It varies outdoor unit at the cooling operation, depending on the indoor units...
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Item Outline of specifications Remarks Alarm output The alarm output from the indoor P.C. board is output in each Connector CN61 setup indoor unit during group control, but it can be set so as to be (Refer to 8-3-1,8-3-2. output in the header unit and follower units. Optional connector Following the table below, register the setting data in DN Code "79".
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Item Outline of specifications Remarks Subject model : Louver control 1) Louver position setup Compact 4-way • When the louver position is changed, the position moves 2-way cassette necessarily to downward discharge position once to return to 1-way cassette (SH) the set position.
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Item Outline of specifications Remarks Louver control <<Individual air direction setup>> Subject model : (Continued) UNIT LOUVER Compact 4-way • Pushing Louver select button enables every discharge port to set up the air direction. The louver numbers that are displayed on the display part Setup from the remote correspond to those in the following figure.
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Item Outline of specifications Remarks Louver control <<Selection of Swing mode>> Subject model : Compact 4-way (Continued) • For the Swing mode, the following three types of modes are selectable and settable by keeping Swing/Direction SWING/FIX button pushed for 4 seconds or more on the remote controller.
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Item Outline of specifications Remarks Louver control • If there is the locked louver in the unit, [ ] goes on the For the setting operation, remote controller screen. refer to [How to set louver (Continued) lock] of Installation Manual. •...
7. COMMUNICATION TYPE, MODEL NAMES AND THE MAXIMUM NUMBER OF CONNECTABLE UNITS 7-1. This air conditioning (U series) has new communication specifications, and TU2C- Link (U series) and TCC-Link (other than U series) differ in a communication type. For the communication type and the model names such as each unit or remote controllers, refer to the following table.
8. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION) 8-1. Indoor controller block diagram (MCC-1643) 8-1-1. In case of connection of wired remote controller Wired remote controller (Up to 2 units) Schedule timer Display LCD Function setup Display driver Key switch Display LED Function setup DC5V...
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8-1-2. In case of connection of wireless remote controller Indoor unit #1 (Header) Wireless remote (Follower) (Follower) controller kit Receiving Indoor control P.C. board P.C. board (MCC-1643) DC20V Remote controller Remote controller communication circuit communication circuit Emergent Power operation circuit EEPROM DC5V DC5V...
8-1-2. In case of connection of wireless remote controller (Compact 4-way cassette type) Indoor unit #1 (Header) (Follower) (Follower) Indoor control P.C. board (MCC-1643) DC20V Remote controller communication circuit EEPROM DC5V TA sensor DC12V Same Same TC1 sensor as left as left TC2 sensor Driver...
8-1-3. Connection of both wired remote controller and wireless remote controller Wired header remote controller Schedule timer Display LCD Function setup Display driver Key switch EEPROM Function setup DC5V DC5V Power Display LED Key switch circuit Power Remote controller Secondary circuit communication circuit battery...
8-2. Indoor controller block diagram (MCC-1744) 8-2-1. In case of connection of wired remote controller Wired header remote controller (Up to 2 units) Schedule timer (weekly timer mode) Function setup Display Display LCD driver Key switch Function setup DC5V DC5V Power Display LED Key switch...
8-2-2. In case of connection of wireless remote controller Indoor unit #1 (Header) (Follower) (Follower) Indoor control P.C. board Wireless remote (MCC-1744) controller receiver DC20V Receiving Remote controller communication circuit P.C. board Remote controller DC5V EEPROM communication circuit Emergent TA sensor Power operation DC12V...
8-4. Test run of indoor unit Cooling/Heating test run check The test run for cooling/heating can be performed from either indoor remote controller or outdoor interface P.C. board. Refer to the Installation Manual and Service Manual of outdoor unit for the procedure of the test run from an outdoor interface P.C.
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<RBC-ASCU11- > Be sure to stop the air conditioner before making settings. (Change the setup while the air conditioner is not working.) Push and hold OFF timer button and [ ] setting button simultaneously for 10 seconds or more. [TEST] is displayed on the display part and the test run is permitted. Push ON/OFF button.
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In case of wireless remote controller Turn on the power of the air conditioner. When power is turned on for the first time after installation, it takes approx. 5 minutes until the remote controller becomes available. In the case of subsequent power-on, it takes approx. 1 minute until the remote controller becomes available.
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Check function for operation of indoor unit (Functions at indoor unit side) This function is provided to check the operation of the indoor unit individually without connecting to the remote controller or the outdoor unit. This function can be used regardless of the ON/OFF operation. However, it is recommend to avoid using this function for along time, otherwise the trouble of the equipment may occurred.
8-5. Method to set indoor unit function DN code (When performing this task, be sure to use a wired remote controller.) Procedure Be sure to stop the air conditioner before making settings <RBC-AMT > Push the buttons simultaneously and hold for at CODE No.
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Push OFF timer button to confirm the selected indoor unit. Code No. Set data Push the menu button to make Code No. [ ] flash. Change Code No. [ ] with [ ] setting button. Push the menu button to make Set data [ ] flash.
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Indoor unit function Code No. (DN Code) table (includes functions needed to perform applied control on site) Description Item At shipment Filter display delay timer 0000: None 0001: 150H Depending on model 0002: 2500H 0003: 5000H type 0004: 10000H t l i f 0001: High degree of dirt (Half of standard time) Central control address 0001: No.1 unit...
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Item Description At shipment ° : F ° ° : c i t Depending on model type High-ceiling adjustment (Air flow selection) Timer setting 0000: Available 0001: Unavailable 0000: Available (wired remote controller) (can be performed) (cannot be performed) Dual set point 0000: Unavailable 0002: Available 0000: Unavailable...
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[5d] External static pressure & High-ceiling adjustment <2-way Cassette, 1-way Cassette SH Type> High-ceiling adjustment Set data 0000 Standard (Factory default) 0001 High ceiling 1 0003 High ceiling 3 <Compact 4-way Cassette> Set data High-ceiling adjustment 0000 Standard (Factory default) 0001 High ceiling 1 (UP015 only) 0003...
8-6. Applied control of indoor unit Control system using Remote location ON/OFF control box (TCB-IFCB-4E2) Wiring and setting • In the case of group control, the control system functions as long as it is connected to one of the indoor units (control P.C.
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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. •...
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Auto-off feature control [Function] • This function controls the indoor units individually. It is used when the start operation from outside is unnecessary but the stop operation is necessary. • A card switch box or card lock helps protect customers from forgetting to turn off the indoor unit. (not including the following Card Input 3) •...
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[Control items] External contact terminal Function Close (Status that card is inserted) Open (Status that card is taken out) Manual prohibition release Manual prohibition Card Input 1 (Manual operation) (Operation stop) Manual prohibition release Manual prohibition Card Input 2 (Automatic operation) (Operation stop) Operation status continues Operation status continues and setting temperature...
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[The example of Card Input 5 setting] Code No. (DN) setting External contact terminal Case. [16A] [16b] [16C] [16d] [16F] [170] [171] [172] [173] Close (Status that card is inserted) Open (Status that card is taken n out) data data data data data...
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Notice code signal Notice code is a function dedicated to TU2C-Link communication. See service manual for u series outdoor unit for details of Notice code. [Function] • Notice Code is issued if there is signal input to connector of outdoor unit P.C. board. This can be used in cases such as when confirming state of outdoor unit (filter clogging, etc.) by air conditioner system.
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Manual address setting using the remote controller Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller) Wiring example of 2 refrigerant lines Refrigerant line 1 Refrigerant line 2 Outdoor...
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<Indoor unit address> 13 13 13 13 13 Push the TEMP. buttons repeatedly to set the CODE No. to Push the TIME buttons repeatedly to set an indoor unit address. Push the button. (It is OK if the display turns on.) <Group address>...
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<Indoor unit address> Push the [menu] button until the CODE No. flashes. And using the [ ] buttons, specify the CODE No.13. Push the [menu] button until the SET DATA flashes. And using the [ ] buttons, set an indoor unit address. Push the [OFF timer] button to confirm the SET DATA.
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Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To know the indoor unit addresses though position of the indoor unit is recognized When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or it is a group-controlled one.
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To find an indoor unit’s position from its address When checking unit numbers controlled as a group <RBC-AMT > TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT Stop FILTER RESET TEST SWING/FIX UNIT LOUVER (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another.
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To check all the indoor unit addresses using an arbitrary wired remote controller. (When communication wirings of 2 or more refrigerant lines are interconnected for central control) <RBC-AMT > TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX...
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Changing the indoor unit address using a remote controller To change an indoor unit address using a wired remote controller. The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one-to-one), or an indoor unit in a group. (The method is available when the addresses have already been set automatically.) <RBC-AMT >...
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<RBC-ASCU11- > 3, 4 2, 5 3, 4 3, 4 Push and hold the [menu + ] buttons at same time for more than 10 seconds. Push the [OFF timer] button to confirm the selected indoor unit. Push the [menu] button until the CODE No. flashes. And using the [ ] buttons, specify the CODE No.13.
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To change all the indoor unit addresses using an arbitrary wired remote controller. (The method is available when the addresses have already been set automatically.) (When communication wirings of 2 or more refrigerant lines are interconnected for central control) NOTE You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller.
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Check code clearing function How to clear the check code using the wired remote controller <RBC-AMT > Clearing a check code of the outdoor unit Clear the currently detected outdoor unit for each refrigerant line to which the indoor unit controlled by the remote controller is connected.
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<RBC-ASCU11- > Clearing a check code of the outdoor unit Clear the currently detected outdoor unit for each refrigerant line to which the indoor unit controlled by the remote controller is connected. (The indoor unit check code is not cleared.) Use the service monitoring function of the remote controller.
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Monitoring function of wired remote controller <RBC-AMT > TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Content Enter the service monitoring mode using the remote controller to check the sensor temperature or operation status of the remote controller, indoor unit, and outdoor unit.
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Indoor service monitor list Code No. Data name Display format Unit Remote controller display example Room temperature (Use to control) ×1 °C Room temperature (Remote controller) ×1 °C Indoor suction air temperature (TA) ×1 °C Indoor coil temperature (TCJ) ×1 °C Indoor coil temperature (TC2) ×1...
9. TROUBLESHOOTING 9-1. Overview (1) Before engaging in troubleshooting (a) Applicable models All Super Modular Multi System (SMMS- ) models. (Indoor units: MM -UP , Outdoor units: MMY-M P (b) Tools and measuring devices required • Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. •...
9-2. Troubleshooting method The remote controllers (main remote controller and central control device) and the interface P.C. board of an outdoor unit are provided with an a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the trouble site / trouble part may be identified in the event of a trouble by following the method described below.
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(Check code detected by remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical trouble site Description of trouble Remote control Operation Timer Ready Sub-code Flash No master remote control, Signals cannot be received from indoor unit; –...
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List of Check Codes (Outdoor Unit) (Check code detected by outdoor interface - typical examples) If "HELLO" is displayed on the oudoor 7-segment for 1 minute or more, turn off the power supply once and then turn on the power supply again after passage of 30 seconds or more. When the same symptom appears, it is considered there is a possibility of I/F board trouble.
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Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block control or main Typical problem site Description of problem remote Operation Timer Ready Sub-code Flash controller display Outdoor suction 01: TS1 sensor Outdoor suction temperature sensor temperature sensor 03: TS3 sensor (TS1,TS3) has been open/short-circuited.
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Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block Typical problem site Description of problem control or main remote Operation Timer Ready Sub-code controller Flash display P.C.board P.C.board Compressor Fan Motor Compressor Fan Motor Trouble in number of There are insufficient number of P.C.
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(Check code detected by Inverter of Compressor featuring in outdoor unit - typical examples) Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block Typical problem site Description of proplem control or main remote Operation Timer Ready Sub-code controller Flash...
9-3. Troubleshooting based on information displayed on remote controller <RBC-AMT > (1) Checking and testing When a trouble occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation.
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<RBC-ASCU11- > (1) Confirmation and check If a problem occurs with the air conditioner, the OFF timer indicator alternately shows the check code and the indoor Unit No. in which the problem occurred. Check code The indoor Unit No. in which the problem occurred.
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Using indoor unit indicators (receiving unit light block) (wireless type) To identify the check code, check the 7-segment display on the header unit. To check for check codes not displayed on the 7-segment display, consult the “List of Check Codes (Indoor Unit)” in “9-2. Troubleshooting method”. : Blinking (0.5 seconds) : Lighting : Goes off...
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Cause of trouble Light block Check code Heat exchanger temperature sensor (TCJ) trouble Operation Timer Ready Heat exchanger temperature sensor (TC2) trouble Indoor unit temperature Heat exchanger temperature sensor (TC1) trouble sensor trouble Ambient temperature sensor (TA) trouble Alternate blinking Discharge temperature sensor (TF) trouble Discharge temperature sensor (TD1) trouble Discharge Operation Timer...
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Cause of trouble Light block Check code Operation Timer Ready Occupancy sensor trouble Outdoor EEPROM trouble Synchronized blinking Other (indications not involving check code) Cause of trouble Light block Check code Operation Timer Ready – Test run in progress Synchronized blinking Operation Timer Ready Setting incompatibility...
9-4. Check Codes Displayed on Remote Controller and SMMS series Outdoor Unit (7-Segment Display on I/F Board) and Locations to Be Checked For other types of outdoor units, refer to their own service manuals. Check code Location Check code detection Main Outdoor 7-segment display Description...
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code No. of indoor Indoor unit Indoor-outdoor All stop Condition 1 • Check power supply to units from communication One indoor unit or more indoor unit.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Too many All stop • Combined capacity of • Check capacities of indoor Capacity over indoor units indoor units is too large.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected Outdoor All stop Outdoor header unit • Check check code check outdoor unit No. follower unit receives trouble code from displayed on outdoor code...
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code TD2 sensor All stop Sensor resistance is infinity • Check connection of TD2 trouble or zero (open/short circuit). sensor connector.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor All stop Readings of high-pressure • Check connection of high- pressure Pd sensor and low-pressure pressure Pd sensor sensor wiring Ps sensor are switched.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code TD1 sensor All stop Discharge temperature of • Check installation of TD1 miswiring compressor 1 (TD1) does sensor.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 01: TK1 oil Oil level All stop No temperature change is • Check for disconnection of circuit trouble detection detected by TK1 despite TK1 sensor.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor All stop Initial setting of I/F P.C. • Check model setting of — capacity not set board has not been P.C.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 1∗: Compressor Activation of All stop High-pressure SW is • Check connection of high- 1 side high-pressure activated.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected indoor Indoor unit Indoor overflow All stop • Float switch operates. • Check float switch address trouble •...
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Discharge All stop Discharge temperature • Check outdoor service temperature (TD2) exceeds 115 ˚C. valves (gas side, liquid TD2 trouble side) to confirm full opening.
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Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 1∗: Fan P.C. Fan INV. Outdoor fan All stop Protected operation of Fan • Check fan motor. board 1 P.C.
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Check codes Detected by Central Control Device Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Central Central control Continued Central control device is • Check for failure in central control device operation...
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Points to Note When Servicing Compressor (1) When checking the outputs of inverters, remove the wiring from all the compressors. How to Check Inverter Output (1) Turn off the power supply. (2) Remove compressor leads from the compressor P.C. board. (The model with two compressor should remove the wiring for two sets (6 leads).
Winding resistance of PMV (Pulse Motor Vale) coil Measure position Resistance value White - Red (COM) Yellow - Red (COM) 180 to 220 Ω Orange - Red (COM) Blue - Red (COM) at 20ºC 9-7. Maintenance list Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units of the operating air conditioning system regularly to secure effective operation of the air conditioner.
10. P.C. BOARD EXCHANGE PROCEDURES Indoor unit 10-1. Replacement of indoor P.C. boards <Note: when replacing the P.C. board for indoor unit servicing> The nonvolatile memory (hereafter called EEPROM, IC503) on the indoor unit P.C. board before replacement includes the model specific type information and capacity codes as the factory-set value and the important setting data which have been automatically or manually set when the indoor unit is installed, such as system/ indoor/group addresses, high ceiling select setting, etc.
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[1] Setting data read out from EEPROM The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out. <RBC-ASCU11- > (header unit No. when the group operation control) Step2 Step3 Step1 Step1 Push and hold the [menu + ] buttons at same time for more than 10 seconds.
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CODE No. required at least Contents 1. The Code No. for the Indoor unit type and Indoor unit capacity are required to set the rotation number setting of the fan. Type 2. If the system/indoor/group addresses are different from those Indoor unit capacity before replacement, the auto-address setting mode starts and System address...
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[2] P.C. Board for indoor unit servicing replacement procedures (e.g. MCC-1643) Step1 Replace the P.C. board to the P.C. board for indoor unit servicing. At this time, perform the same setting of the jumper wire (J01, J08, J09) setting (cut), switch SW501, (short-circuit) connector CN34 as the setting of the P.C.
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[3] Writing the setting data to EEPROM The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values. <RBC-ASCU11- > Step 1 Push and hold the [menu + ] buttons at same time for more than 10 seconds. * When the group operation control is performed, the unit No.
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<RBC-AMT > Step 1 Push buttons on the remote controller simultaneously for more than 4 seconds. * In the group control operation, the unit No. displayed for the first time is the header unit No.. At this time, the CODE No. (DN) shows “ ”.
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Table 1. Setting data (CODE No. table (example)) CODE No. (DN) Item Setting data Factory-set value Filter sign lighting time Depending on Type Filter pollution level 0000: standard Central control address 0099: Not determined Heating suction temperature shift Depending on Type Cooling only 0000: Heat pump Type...
11. DETACHMENTS 11-1. Compact 4-way cassette MMU-UP WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. No.
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No. Part name Procedure Remarks 1. Detachment Adjust corner cap 1) Remove the air intake grille. (Refer to 1 of 2) Loosen the fixing screws on the adjust corner cap. Adjust corner (M 4 × 12, 4 pcs.) Screw 3) Slide the adjust corner cap to outside to remove it. 2.
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No. Part name Procedure Remarks 1. Detachment Control Clamp P.C. board 1) Remove the electric parts cover. (Refer to 1 of 2) Remove connectors which are connected from the control P.C. board to the other parts and then remove wiring from the clamp. NOTE Unlock the lock of the housing part and then remove the connector.
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No. Part name Procedure Remarks 1. Detachment Turbo fan Nut cap Fixing screw 1) Remove the air intake grille. (Refer to 1 of of bell mouth 2) Loosen the fix screws (2 positions) of the bell mouth, rotate the bell mouth, and then take off it. (M 4 ×...
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No. Part name Procedure Remarks 1. Detachment Drain pan 1) Remove the ceiling panel and the electrical parts covers. Fixing screws (Refer to items -1 and -1.) 2) Remove the wiring cover. (Fixing screw M 4 × 8, 3pcs.) 3) Remove the wiring fixing plate. Wiring cover (Fixing screw M 4 ×...
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No. Part name Procedure Remarks 1. Detachment Drain pump Fixing screw 1) Remove the drain pan. (Refer to -1.) 2) Remove the drain pump connector (CN504: 2P, White) connected to the control P.C. board and remove the lead wires from the clamp. 3) Remove the fixing screws to remove the drain pump.
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No. Part name Procedure Remarks 1. Detachment Fan motor Shoulder screws (Black) 1) Remove the turbo fan, electric parts cover, wiring cover and wiring fixing plate. (Refer to -1-2, -1-3.) 2) Remove the fan motor connector (CN210, White, 7P) Motor lead wire cover connected to the control P.C.
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No. Part name Procedure Remarks 1. Detachment 1) Remove the drain pan. (Refer to -1.) 2) Pull out the sensor to be exchanged from the sensor Sensor holder. 3) Remove the connector connected to the control P.C. board, and take off wires from the clamp. (Refer to 2.
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No. Part name Procedure Remarks 1. Detachment Heat exchanger 1) Recover refrigerant gas. 2) Remove the refrigerant pipe at indoor unit side. 3) Remove the drain pan. (Refer -1.) 4) Disconnect the heat exchanger sensor (TC1, TC2, TCJ), PMV lead wires connectors from the control P.C. board, and then remove their lead wires from the clamp.
11-2. 2-way cassette MMU-UP WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. Ceiling Panel (RBC-UW283PG(W)-E, UW803PG(W)-E, UW1403PG(W)-E)) For detachment, they are expediently expressed as follows: UP009: MMU-UP0071WH to UP0151WH (Ceiling panel: RBC-UW283PG(W)-E)
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No. Part name Procedure Remarks 2. Attachment Center panel 1) Insert hook of the center panel into shaft of the adjust (Continued) cover. (2 positions at left and right sides) Insert hook attached with a panel stopper. Note Be sure to attach a hook with panel stopper at first. If Adjust cover attaching a hook without panel stopper at first, the center Wire fixing part...
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No. Part name Procedure Remarks 1. Detachment Electric Electric parts box Electric parts box Electric parts box parts 1) Perform work Detachment 1 of 2) Take off screws. (M 4 × 8, 2 pcs.) Screws Screws Screws 3) When sliding the box to the arrow direction (1) in the Electric parts box Electric parts box Electric parts box...
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No. Part name Procedure Remarks 1. Detachment Control Cord clamp Binding band P.C. board 1) Perform work from 1) to 5) Detachment 1 of 2) Unlock the locks of the card edge spacers (at 4 positions) in the electric parts box and then remove the control P.C.
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No. Part name Procedure Remarks 1. Detachment (In cases of UP027) Fan motor In case of UP027 Claw 1) Perform work Detachment 1 of Fan case Claw 2) In the works of 1 of , perform works to open the electric parts box cover and remove connectors of the fan motor wiring.
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No. Part name Procedure Remarks 1. Detachment (In cases of UP048) Fan motor In case of UP048 Claw 1) Perform work Detachment 1 of Fan case Claw Bearing 2) In the works of 1 of , perform works to open the electric parts box cover and remove connectors of the fan motor wiring.
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No. Part name Procedure Remarks 1. Detachment Frame cover 1) Perform work of Detachment 1 of Adjust cover 2) Take off screw (M 4 × 10, 1 pc.) and then remove the frame cover while pushing the claw to inner side. 3) Take off screws which fix the adjust cover.
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No. Part name Procedure Remarks 1. Detachment Ceiling panel 1) Perform work Detachment 1 of Tentative hook Tentative hook Tentative hook 2) In the works of 1 Detachment of , perform works to open the electric parts box cover and remove connector of the louver motor wiring.
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No. Part name Procedure Remarks 1. Detachment (In case of UP009) Drain pan Fan motor wire 1) Perform work Detachment 1 of In case of UP009 Drain pan Perform work Detachment 1 of Screw Screw Screw 2) Take off the drain cap and then extract accumulated drain water in the drain pan.
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No. Part name Procedure Remarks 1. Detachment (In cases of UP027/UP048) Drain pan In cases of UP027/UP048 (Continued) 1) Perform work Detachment 1 of Perform work Detachment 1 of Partition board Partition board Partition board 2) Take off the drain cap and then extract accumulated drain water in the drain pan.
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No. Part name Procedure Remarks 1. Detachment Drain pump 1) Perform work Detachment 1 of 2) Pick the hose band and shift it from the pump A hose band is moved A hose band is moved A hose band is moved connecting part and then remove the drain hose.
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No. Part name Procedure Remarks 1. Detachment PMV coil 1) Perform work Detachment 1 of 8 . 2) Remove the relay connector of PMV coil. Relay connector: AP048 type only Relay connector: AP048 type only Relay connector: UP048 type only (Only relay connector of UP048 type is connected in (Inside of vinyl tube (Black)) (Inside of vinyl tube (Black))
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No. Part name Procedure Remarks 1. Detachment (In case of UP009) Heat In case of UP009 exchanger 1) Recover the refrigerant gas and then remove the End board refrigerant pipe of the indoor unit. 2) Perform work of Detachment 1 of 3) Pull out wires of TC1 sensor, TC2 sensor and TCJ sensor from the holder.
11-3. 1-way cassette (SH) MMU-UP WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. Ceiling panel: RBC-US21PGE No.
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No. Part name Procedure Remarks 1. Detachment Adjust cap 1) Perform work of procedure 1. of 2) Take off fixing screws. (M4 × 12, 2 pcs) 3) Hold handle of the cap, and then slide it toward suction side to remove cap. 2.
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No. Part name Procedure Remarks 1. Detachment Electrical control box 1) Perform work of procedure 1. of Fixing screw 2) Take off the fixing screws. (M 4 × 8, 4 pcs) 3) Remove the cord clamp on the ceiling surface, pull the electrical control box downward, and then hook the hooking claw at the rear side to square hole for temporary hanging of the panel.
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No. Part name Procedure Remarks 1. Detachment Control P.C. 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.
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No. Part name Procedure Remarks 1. Detachment Fan motor Remove the banding band CN210 : Fan motor 1) Perform work of procedure 1. of 2) Remove the banding band and clamps of the lead wires which are connected to the following connectors of the control P.C.
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No. Part name Procedure Remarks 1. Detachment Drain pan Fixing screw 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.
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No. Part name Procedure Remarks 1. Detachment Drain CN504 : Drain pump pump 1) Perform work of procedure 1. of 2) Remove clamps of the lead wires 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.
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No. Part name Procedure Remarks 1. Detachment PMV coil Relay connector (In vinyl tube (Black)) Banding band 1) Perform work of procedure 1. of 2) Remove the relay connector of PMV coil. (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.) 3) A little PMV coil is rotated, pressing down so that a...
11-4. Floor standing cabinet MML-UP WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. Spare parts Work procedure Remarks...
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Spare parts Work procedure Remarks Refrigerant 1. Detachment cycle (1) Recover the refrigerant gas. assembly (2) Take off the connecting pipe. (Liquid pipe and gas pipe) (3) Following to works 1 of , and (1) to (10), detach the parts. (4) Take off the reinforcement plate.
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Spare parts Work procedure Remarks Horizontal 1. Detachment louver (1) Following step 1 of and those in (3) to (5), PMV motor detach the parts. (2) Remove the PMV connector : CN082 (6P Blue) from the P.C.board. (3) Turn the PMV coil slightly clockwise while holding the PMV body so that the body does not turn, and remove the PMV coil in the arrow direction.
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Spare parts Work procedure Remarks M4 screw Fan assembly 1. Detachment (1) Following step 1 of , (1) to (3), (6 )and (7), detach the parts. (2) Take off the nut which fixes the fan assembly. (M6 nut: 1 position) (3) Draw out the fan assembly toward you.
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Spare parts Work procedure Remarks Capacitor 1. Detachment (1) Following step 1 of and (1) to (2), detach the parts. (2) Remove the capacitor. (M4 screw: 1 position) 2. Attachment Following step 1 of , and (1) to (3), attach the parts as original in the reverse procedure.
11-5. Floor standing concealed MML-UP WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. No.
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No. Part name Procedure Remarks 1. Detachment Control CN030 P.C.board (Red) (1) Remove the electric parts cover. (2) Remove following connectors from the control P.C. board. * Remove the connectors by unlocking the locks of the housing part. CN030: Short-circuit pin (3P: Red) CN041: Terminal block for controller (2P: Blue) CN040: Terminal block for communication wire between indoor and outdoor unit (2P:Blue)
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No. Part name Procedure Remarks 1. Detachment Refrigerating cycle (1) Recover the refrigerating gas. assembly (2) Remove the connecting pipes. (Liquid pipe and gas pipe) (3) Following to works in 1 of and (1) to (5), detach the parts. (4) Remove the filter. (No screw fixing) (5) Remove the wire guard.
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No. Part name Procedure Remarks 1. Detachment PMV coil Relay lead wire connector (1) Following to works of 1 of and (1) to (9), detach for PMV coil Binding band the parts (2) Cut the binding band to remove the tube on the relay connector for the PMV lead wire.
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No. Part name Procedure Remarks 1. Detachment Clamp assembly (1) Following to the works in 1 of of (1) to (3) detach the parts. (2) Remove CN083 connector from the control P.C. board. (3) Remove the fan motor lead from the clamp. (4) Slide the glass tube fixing the fan motor lead and remove the connector.
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No. Part name Procedure Remarks [UP007 to UP012] Fan motor 1. Detachment (1) Following to works of 1 of and (1) to (5), detach the Fan assembly parts. (2) Remove the wire clamps which fixes the fan motor Wire lead. (Two positions) Wire clamp Fan motor...
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No. Part name Procedure Remarks 2. Attachment Fan motor Fan motor (Continued) reinforcement plate (1) Attach the fan motor, motor band, fan motor reinforcement plate, and fan case as original. Fan motor * When attaching the fan motor, be sure that the fan motor does not hit the motor base reinforcement Lead wire Motor band...
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No. Part name Procedure Remarks Fan motor [UP015 to UP024] Wire clamp Fan motor lead (Continued) 1. Detachment (1) Following to works of 1 of and (1) to (5), detach the Fan assembly parts. (2) Remove the wire clamps which fixes the fan motor lead.
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No. Part name Procedure Remarks Capacitor [UP007 to UP012] 1. Detachment (1) Following to ‚1 of , and (1) to (2), detach the parts. Capacitor (2) Remove the capacitor cover and remove the capacitor cover lead from the capacitor. (M4 screw: 2 pieces) (3) Remove the capacitor.
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No. Part name Procedure Remarks Drain pan 1. Detachment (1) Remove the front panel (lower) and electric parts assembly. Refer to the works of 1 of and (6), and the work of Screw Screw Screw 1 of Drain pan Drain pan Drain pan (2) Remove the screws fixing the drain pan (3) Slide the drain pan in the direction of piping side to...
11-6. Floor standing MMF-UP WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. Part name Procedure Remarks...
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Part name Procedure Remarks Electric parts 1. Detachment 1) Carry out the work of item Screw 1 2) Remove the Screw 1 (two screws) from the Screw 1 drip-proof cover on the bottom plate. * This work is unnecessary for Models Drip-proof Screw 2 UP036 to UP056.
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Part name Procedure Remarks Access panel 1. Detachment 1) Carry out the work of item 2) Remove the two screws of the Access panel, slide the Access panel approx. 30mm upward, and remove the Access panel while drawing it toward you. •...
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Part name Procedure Remarks Fan, 1. Detachment Fan motor 1) Carry out the works of items -1 and 2) Cut off the banding band that fixes the fan <UP015 to UP027> motor lead wire to remove the fan motor Screw 1 Screw 1 Screw 1 connector in the electric parts box.
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Part name Procedure Remarks Heat 1. Detachment exchanger 1) Carry out the works of items -1 and UP015 to UP027 <UP015 to UP027> 2) Remove the tube of the relay part of PMV, and then remove the relay connector. To PMV coil Upper shield Screw 2 Screw 2...
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No. Part name Procedure Remarks PMV coil 1. Detachment View A (1) Carry out the works items (2) Cut the binding bands (2 places) to remove the tube of the relay part of PMV. (3) Remove the PMV lead from the relay connector Binding band Binding band Binding band...
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No. Part name Procedure Remarks Horizontal 1. Detachment louver (1) Remove the intake grille and the access panel. Shield plate (Carry out the works items -1 and -1.) assembly (2) Remove three screws that fixes the shield plate assembly to remove the shield plate assembly. (3) Remove two screws that fixes the discharge grille assembly.