CONTENTS ORIGINAL INSTRUCTION ..................... 3 WARNING INDICATIONS ON THE AIR CONDITIONER UNIT ..........5 PRECAUTION FOR SAFETY ....................6 NEW REFRIGERANT (R410A) .................... 11 1. SPECIFICATIONS ......................13 1-1. Indoor Unit ..........................13 1-2. Outdoor Unit ..........................29 1-3. Operation Characteristic Curve ....................30 2.
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.
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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 indication Description WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD...
Precaution for Safety WARNING 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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Even if the circuit breaker has been set to the OFF position before the service panel is removed and the electrical parts are repaired, you will still risk receiving an electric shock. For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before proceeding with the repair work.
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The refrigerant used by this air conditioner is the R410A. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see.
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Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and water drainage. Then perform a trial run to check that the air conditioner is running properly. After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or injury may be caused.
Toshiba Carrier Corporation 336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN Authorized Nick Ball Representative/TCF holder: Toshiba EMEA Engineering Director Toshiba Carrier UK Ltd. Porsham Close, Belliver Industrial Estate, PLYMOUTH, Devon, PL6 7DB. United Kingdom Hereby declares that the machinery described below:...
New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
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4. Tools 1. Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.
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RBC-TWP30E2, RBC-TWP50E2 (Simultaneous Twin) Inner diameter Ø C Inner Inner diameter Ø D diameter Ø D Model (RBC-) Liquid side Ø9.5 Ø6.4 TWP30E2 Gas side Ø15.9 Ø12.7 Liquid side Ø9.5 Ø9.5 TWP50E2 Gas side Ø15.9 Ø15.9 – 33 –...
5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Outdoor Unit Parts name Type Specifications Compressor DA422A3F-27M — Outdoor fan motor ICF-280-A100-1 DC 280 V, 100 W 4-way valve coil STF-01AJ502E1 AC 220 – 240 V, 50/60 Hz PMV coil UKV-A038 DC 12 V High pressure switch ACB-4UB83W OFF : 4.15 MPa...
6. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC 6. When an air conditioning system charged with a (R410A) which does not damage the ozone layer. large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, The working pressure of the new refrigerant R410A even when refrigerant leaks, its concentration is 1.6 times higher than conventional refrigerant...
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Table 6-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A 0.80 0.80 0.80 0.80 12.7 0.80 0.80 15.9 1.00 1.00 1. Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm.
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c) Insertion of Flare Nut d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conventional flare tool. ØD Flare processing dimensions differ according to the type of flare tool.
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Fig. 6-2-2 Relations between flare nut and flare seal surface 2. Flare Connecting Procedures and Precautions a) Make sure that the flare and union portions do not have any scar or dust, etc. b) Correctly align the processed flare surface with the union axis. c) Tighten the flare with designated torque by means of a torque wrench.
6-3. Tools 6-3-1. Required Tools Refer to the “4. Tools” 6-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment.
1) Be sure to make setting so that liquid can be charged. 2) When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.
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2. Characteristics required for flux 6-5-3. Brazing • Activated temperature of flux coincides with As brazing work requires sophisticated techniques, the brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. • Due to a wide effective temperature range, flux is hard to carbonize.
Operation System age of the pipe at the worst. • In the concurrent twin system, when TOSHIBA- specified branching pipe is used, it can be reused. Pipe diameter and thickness (mm) Branching pipe model name: RBC-TWP30E2, RBC-TWP50E2, RBC-TRP100E.
6-6-5. Final Installation Checks Is there no scratch or dent on the existing pipes? Existing pipe: NO * Use a new pipes. Is it possible to operate the existing air conditioner? ∗ After the existing air conditioner operated in cooling mode for approx.
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6-6-6. Handling of Existing Pipe 6-6-7. Recovery Method of Refrigerant When using the existing pipe, carefully check it for • Use the refrigerant recovery switch SW801 on the the following: P .C. board of the outdoor unit to recover refrigerant when the indoor unit or outdoor unit is moved.
7. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS 7-1. Outdoor Unit Control 7-1-1. Print Circuit Board, MCC-1596 (Compressor IPDU) CN851 CN101 (Red) (White) Connector for MCC-1597 (CN505) Connector for MCC-1597 (CN502) CN13 (Black) Terminal for power relay Electric circuit protective fuse (500V, 31.5A) CN12 (White) Terminal for MCC-1600 (CN17)
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7-1-2. Print Circuit Board, MCC-1597 (Fan Motor IPDU) CN750 CN700 CN500 (White) (Blue) (Red) Fan motor output (Upper side) Fan motor output (Lower side) Connector for MCC-1600 (CN23) and reactor CH68 CN504 CN602 F500 (Blue) (Black) Connector for MCC-1599 Connector for MCC-1600 (CN51) Electric circuit protective fuse (CN802) (250V, 15A)
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7-1-3. Print Circuit Board, MCC-1599 (Interface (CDB)) CN708 CN608 (Blue) (White) Connector for power relay coil Connector for MCC-1600 (CN50) CN02 (Red) CN802 (White) Connector for MCC-1600 (CN10 and CN19) Connector for MCC-1597 (CN504) CN700 (Yellow) Power supply protective fuse (250V, 3.15A) 4-way valve connector Temp.sensor connector...
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7-1-4. Print Circuit Board, MCC-1600 (Noise Filter) CN05 CN16 (Red) CN10 (Red) (Red) ower supply terminal (L1) erminal for power relay erminal for MCC-1599 (CN02) and Terminal for PTC thermistor aristor protective fuse (250V, 6.3A) CN06 (White) ower supply terminal (L2) CN17 (White) erminal for...
7-2. Outline of Main Controls 1. PMV (Pulse Motor Valve) control 1) PMV is controlled between 30 and 500 pulses during operation. 2) In cooling operation, PMV is usually controlled with the temperature difference between TS sensor and TC sensor aiming 1 to 4K as the target value. 3) In heating operation, PMV is usually controlled with the temperature difference between TS sensor and TE sensor aiming –1 to 4K as the target value.
3. Outdoor fan control Revolution frequency allocation of fan taps [rpm] SP110 to SP160 Down — — 3-1) Cooling fan control The outdoor fan is controlled by TL sensor, TO sensor and the operation frequency. The outdoor fan is controlled by every 1 tap of DC fan control (14 taps). ...
4. Coil heating control 1) This control function heats the compressor by turning on the stopped compressor instead of a case heater. It purposes to prevent stagnation of the refrigerant inside of the compressor. 2) As usual, turn on power of the compressor for the specified time before a test run after installation; otherwise a trouble of the compressor may be caused.
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7. Current release value shift control Current release control value (11) 1) This control purposes to prevent troubles of the electronic parts such as the compressor Temperature range SP110 SP140 SP160 driving elements and the compressor during 47°C d To cooling operation.
10. Defrost control 1) In heating operation, defrost operation is performed when TE sensor satisfies any condition in A zone to D zone. 2) During defrosting operation, it finishes if TE sensor continued 12°C or higher for 3 seconds or continued 7°C d TE <...
8. TROUBLESHOOTING 8-1. Summary of Troubleshooting <Wired remote controller type> 1. Before troubleshooting 1) Required tools/instruments – • screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal.
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<Wireless remote controller type> 1. Before troubleshooting 1) Required tools/instruments – • screwdrivers, spanners, radio cutting pliers, nippers, etc. • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal. 1. Compressor does not operate. •...
8-2. Troubleshooting 8-2-1. Outline of judgment The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with the following method. Method to judge the erroneous position by flashing indication on the display part of the indoor unit (sensors of the receiving part) The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis are displayed restricted to the following cases if a protective circuit works.
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8-2-2. Others (Other than Check Code) Lamp indication Check code Cause of trouble occurrence Operation Timer Ready — During test run Simultaneous flash Operation Timer Ready Disagreement of cool/heat — (Automatic cool/heat setting to automatic cool/heat prohibited model, or setting of heating to cooling-only model) Alternate flash –...
8-2-3. Monitor Function of Remote Controller Switch n Calling of sensor temperature display <Contents> Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor mode from the remote controller. <Procedure> TEST Push buttons simultaneously for 4 seconds to call the service monitor mode.
Error mode detected by indoor unit Operation of diagnostic function Judgment and measures Check Status of Cause of operation Condition code air conditioner 1. Check cables of remote controller and communication adapters. No communication from remote Stop Displayed when controller (including wireless) and •...
Error mode detected by outdoor unit The check code has been ramified from 4 series and after. The ramified check code is displayed only when both the indoor unit and the outdoor unit are 4 series and after. (Ex. Combination of RAV-SM1404UT-E with RAV-SP1404AT8-E) When the indoor unit is 3 series and before, the conventional check code is displayed.
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Operation of diagnostic function Check code Indoor unit Status of Judgment and measures Cause of operation Condition air conditioner before after 3 series 4 series Displayed when 1. Check outdoor P .C. board (MCC-1596). Current detection circuit error Stop error is detected (AC current detection circuit) 1.
Error mode detected by remote controller or central controller (TCC-LINK) Operation of diagnostic function Judgment and measures Status of Check code Cause of operation Condition air conditioner Power supply error of remote controller, Indoor EEPROM error 1. Check remote controller inter-unit wiring. No communication with master indoor unit 2.
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8-2-5. Diagnostic Procedure for Each Check Code (Outdoor Unit) 1) This section describes the diagnostic method for each check code displayed on the remote controller. 2) In some cases, a check code indicates multiple symptoms. In this case, confirm LED display on the outdoor P.C. board to narrow the contents to be confirmed. 3) The check code on the remote controller is displayed only when the same error occurred continuously by multiple times while LED of the outdoor P.C.
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F04] <Display 1> <Display 2> [Discharge temp. sensor (TD) error] ¡ ¡ ¡ Correct connector. Is CN603 connection normal? Sensor error → Replace Is resistance value of TD sensor normal? ¥...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F08] <Display 1> <Display 2> [Outside air temp. sensor (TO) error] ¡ ¡ ¡ Is CN602 connection normal? Correct connector. ¥ Is resistance value of TO sensor normal? Sensor error →...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F31] <Display 1> <Display 2> [EEPROM error] ¡ ¡ ¡ ¥ ¥ Check outdoor P.C. board (MCC-1599). ¥ Defect → Replace ¡ ¥ ¡...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [H03] <Display 1> <Display 2> [Current detection circuit error] ¡ ¡ ¡ Check outdoor P.C. board (MCC-1596). Defect → Replace ¡ ¥ ¥ <Display 1>...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [L29] There is a possibility that it is one of the following errors. Confirm LED on outdoor P .C. board to judge which error it is. Communication error between MCU, Heat sing temp.
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P03] <Display 1> <Display 2> [Discharge temp. error] ¡ ¡ ¡ Repair defective position. Is there no gas leak? Recharge refrigerant. Is refrigerant charge amount adequate? ¡...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P04] Heating operation Are connections of Does the heating indoor fan connectors,capacitors normally operate? and fan motor normal? Is there any element which blocks indoor heat exchanger? Elimination of Repair...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P05] <Display 1> <Display 2> [Power supply error (Voltage error)] ¡ ¡ Is there no open phase Correct wiring. ¡ of the power supply? ¡...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P20] <Display 1> <Display 2> [High pressure protective operation] ¡ ¡ ¥ ¡ Is valve fully opened? Open valve fully. ¥ ¡ ¡ Reset the power supply ¡...
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Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P22] <Display 1> <Display 2> [Fan system error] ¡ ¡ ¥ ¡ Is there no problem on power supply voltage? Check wiring construction. (342 to 457V) Ask repair of power supply.
Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ, TE, TS, TO sensors TD, TL sensors Representative value Representative value Resistance value (k: : : : : ) Resistance value (k: : : : : ) Temperature Temperature (°C) (°C) (Minimum value) (Standard value) (Maximum value)
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Table Inspection of outdoor unit main parts Parts name Checking procedure Compressor Measure the resistance value of each winding by using the tester. (Model : DA422A3F-27M) Position Resistance value Red – White White – Black 0.79 ± 0.04 : White Black Black –...
9. SETUP AT LOCAL SITE AND OTHERS 9-1. Calling of Error History <Contents> The error contents in the past can be called. <Procedure> TEST Push buttons simultaneously for 4 seconds or more to call the service check mode. TEMP. ON / OFF Service Check goes on, the CODE No.
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n Indoor unit power-ON sequence Power ON • The unit without power feed waits entirely → Waiting status is released by system start • Reboot when power is fed on the way <By feed unit> <Automatic address judgment> Not normal Gr construction check 3 minutes elapse Normal...
9-3. Outdoor Unit 9-3-1. Various Setting on Outdoor Unit (Existing piping, Power save, Cooling-only, etc.) The following settings are available by DIP switch setup and jumper line setup. Function Set position Control contents Turn the switch to ON when mounting a duct to the discharge port of the outdoor unit.
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9-3-2. Service Support Function (LED Display, Switch Operation) 1. Outline A various setup and operation check can be performed by DIP switches at 3 positions (SW802, SW803, SW804) and the pushdown button switches (SW800, SW801) at 2 positions. Operation part Part No.
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9-3-3. Others 1. Selection of LED display (SW800, SW803 operation) 1) Display selection list The displayed contents of LED D800 to D804 on the outdoor control P .C. board can be exchanged by operation of SW803. Switch Function / Contents Refer Error display (Error generating at present) Refer to...
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2) Error display The error which is generating at present and the latest error (Latest error information including present) can be confirmed by lighting LED D800 toD804 on the outdoor control P .C. board. a) When all DIP switch SW803 are OFF, the status of error which is generating at present is displayed. b) <1>...
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3) Sensor, current, compressor operation frequency, PMV opening display The values detected by the controller, such as temperature sensor or current value are simply confirmed. (Legend) ¥ ¡ D800 D801 D802 D803 D804 D805 ¡ : Go off, : Go on (Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green) Temperature sensor (°C) Compressor...
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4) Specific operation for maintenance check (SW801, SW804) The following specific operations for the maintenance check are performed by operation of SW801 or SW804. a) Select DIP switch SW804. (See table below) b) Push the pushdown button switch SW801 for approx. 1 second. c) The following functions start.
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SW804 Operation when pushdown button switch SW801 is pushed 4-way valve relay operation (For RY700, CN70 check) SW804 Turn on 4-way valve power relay (RY700). When pushing SW801 again or when 2 minutes elapsed, the operation returns to the normal control. [CAUTION] Although these operations can Heater output relay operation...
10. ADDRESS SETUP 10-1. Address Setup Procedure When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address setup completes with power-ON of the outdoor unit.
10-2. Address Setup & Group Control <Terminology> Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64) Group address : 0 = Single (Not group control) 1 = Master unit in group control 2 = Sub unit in group control Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/from the remote controllers and sub indoor units.
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10-2-2. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single (Master/Sub) Individual 2) Group operation (Twin, Triple operation) (Multiple outdoor units = Miltiple indoor units only with serial communication) Sub/Header Sub/Header Sub/Follower Master/Header Sub/Follower Sub/Follower Only turning on source power supply (Automatic completion) •...
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10-2-3. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single 2) Twin 3) Triple (SP160 only) (1-1) (1-2) (1-1) (1-2) (1-3) Individual Master/Header Sub/Follower Sub/Header Master/Follower Sub/Follower (Master/Header) Only turning on source power supply (Automatic completion) 2.
10-3. Remote Controller Wiring • Strip off approx. 9 mm the wire to be connected. Wiring diagram • For single system, use non polarity, 2 core wire is used for wiring of the remote controller. Terminal block for remote controller Terminal block (0.5 mm²...
10-4. Address Setup (Manual setting from remote controller) In case that addresses of the indoor units will be (Example of 2-lines cabling) (Real line: Cabling, Broken line: Refrigerant pipe) determined prior to piping work after cabling work Outdoor Outdoor • Set an indoor unit per a remote controller. 1 2 3 1 2 3 •...
10-5. Confirmation of Indoor Unit No. Position 1. To know the indoor unit addresses though position of the indoor unit body is recognized • In case of individual operation (Wired remote controller : indoor unit = 1 : 1) (Follow to the procedure during operation) <Procedure>...
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<Maintenance/Check 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. It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time. Check periodically signs of rust or scratches, etc.
11. REPLACEMENT OF THE SERVICE P.C. BOARD (4316V417) MCC-1599 1. Setting the jumper wires and DIP switches Part name Function Setting J800 to J803 Model switching Cut these jumper wires according to the following table. Jumper wire Set these jumper wires to the settings of the P.C. board J804 to J811 Settings before replacement...
12. HOW TO EXCHANGE COMPRESSOR 12-1. Exchanging Procedure of Compressor (Outline) START Open PMV forcedly and then recover refrigerant Has refrigerant recovery work been done? using a refrigerant recovery unit. Turn off the leakage breaker. Never recover the refrigerant to the outdoor unit. For the refrigerant recovery work during reinstallation Remove the defective compressor.
14. DETACHMENTS 14-1. Outdoor Unit RAV-SP1104AT8 (7), RAV-SP1404AT8 (7), RAV-SP1604AT8 (7) series Part name Procedure Remarks Common procedure WARNING Stop operation of the air conditioner and turn off breaker switch. CAUTION Ensure wearing of gloves when performing any work in order to avoid injury from parts, etc. 1.
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Part name Procedure Remarks 1. Detachment Discharge Heat exchanger Motor base port cabinet 1) Carry out the operation in 1. of above. 2) Remove the screws fixing the inverter assembly, the discharge port cabinet and the partition board. (ST1T Ø4 × 8, 4 pcs.) 3) Remove the screws for the discharge port cabinet and the bottom plate.
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Part name Procedure Remarks 1. Detachment Side cabinet Discharge port cabinet Side cabinet 1) Carry out the operation in 1. of above. Inverter ass’y 2) Remove the screws fixing the inverter assembly and the side cabinet. (ST1T Ø4 × 10, 3 pcs.) 3) Remove the screws for the side cabinet and the valve fixing plate.
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Part name Procedure Remarks 1. Detachment Inverter assembly 1) Carry out the operation in 1. of , 1. of above. 2) Remove the connectors connected to the Fan IPDU board, the connector connected to other components from the control board Cut the Cut the banding band...
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Part name Procedure Remarks 1. Detachment Interface board (Control board) 1) Carry out the operation in 1. of , and MCC-1599 1. of above. 2) Remove lead wires and connectors to other components from the interface board (control board). CN01 : Indoor/Outdoor connection terminal (5P: White) CN02 : Power relay (3P: Red) CN600 : TS sensor (3P: White, tube: Gray)
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Part name Procedure Remarks 1. Detachment Fan-IPDU board FAN-IPDU board MCC-1597 1) Carry out the operation in 1. of , and 1. of above. 2) Remove lead wires and connectors to other components from the Fan-IPDU board. CN500 : Connection between reactor and noise filter board (7P, Red) CN502 : Compressor IPDU board (3P, White) CN504 : Interface board (5P, Blue)
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Part name Procedure Remarks 1. Detachment Noise filter Fan-IPDU boardg board 1) Perform the operation in 1. of ,1. of MCC-1600 1.-2 of and 1.-2 of 2) Remove the screws (3 positions) fixing the inverter assem- bly (front). Then slide the inverter assembly (front) upwardly and remove.
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Part name Procedure Remarks 1. Detachment Compressor IPDU board 1) Carry out the operation in 1. of , 1. of MCC-1596 1. of , 1. of and 1. of 2) Remove the screw (4 positions) fixing the inverter assembly (IPDU). 3) Remove the lead wire and connector to other components from the compressor IPDU board.
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Part name Procedure Part name Fan motor 1) Carry out works of item 1 of and work of 2) Remove the flange nut fixing the fan motor and the propeller Propeller fan Propeller fan fan. • The flange nut is loosened by turning it clockwise. Loosened by Loosened by (When tightening it, turn it counterclockwise.)
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Part name Procedure Remarks 1. Removal of defective compressor Compressor Piping panel (Front) Piping panel (Front) Compressor 1) Recover the refrigerant gas. lead 2) Carry out work of item 1 of , 1 of and 1 of 3) Remove the piping panel (Front). Remove the piping panel (Front) and screws of the bottom plate.
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Part name Procedure Remarks 2. Mounting of compressor Compressor Wrap the ferrite core with the compressor Compressor lead 1) Mount the compressor in the reverse lead wire for 1 time. procedure for removal. (Continued) Compressor lead Compressor lead NOTE • After replacement of the compressor, be sure to replace the compressor lead.
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Part name Procedure Remarks 1. Detachment PMV coil Concave part PMV main unit 1) Carry out work of item 1 of 2) Turn the coil while pulling upward and then remove the coil from the PMV main unit. 2. Attachment 1) Surely match the positioning projection of the coil with the concave part of PMV main unit and then fix it.
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WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will NOTE 2 : not exceed a set limit. The standards for minimum room volume are as follows.