Toshiba RAV-GM1601AT8P-E Service Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. Air Conditioner
  5. RAV-GM1601AT8P-E
  6. Service manual

Toshiba RAV-GM1601AT8P-E Service Manual

Outdoor unit
Hide thumbs Also See for RAV-GM1601AT8P-E:
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL
OUTDOOR UNIT
<DIGITAL INVERTER>
RAV-GM1601AT8P-E
RAV-GM1601AT8JP-E
RAV-GM1601AT8P-TR
R32
AIR-CONDITIONER
FILE NO. SVM-20058-1
(SPLIT TYPE)
Revised on May, 2020

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RAV-GM1601AT8P-E and is the answer not in the manual?

Questions and answers

Related Manuals for Toshiba RAV-GM1601AT8P-E

Summary of Contents for Toshiba RAV-GM1601AT8P-E

  • Page 1 FILE NO. SVM-20058-1 SERVICE MANUAL AIR-CONDITIONER (SPLIT TYPE) OUTDOOR UNIT <DIGITAL INVERTER> RAV-GM1601AT8P-E RAV-GM1601AT8JP-E RAV-GM1601AT8P-TR Revised on May, 2020...

  • Page 2: Table Of Contents

    Adoption of R32 Refrigerant Original instruction This air conditioner adopts the HFC refrigerant (R32) which does not destroy the ozone layer. This outdoor unit is designed exclusively for use with R32 refrigerant. Be sure to use in combination with a R32 refrigerant indoor unit. CONTENTS SAFETY CAUTION ...................
  • Page 3 8. TROUBLESHOOTING ................55 .............. 55 8-1. Summary of Troubleshooting ................. 57 8-2. Troubleshooting ......... 76 8-3. Table Inspection of outdoor unit main parts 9. SETUP AT LOCAL SITE AND OTHERS ..........77 ..............77 9-1. Calling of error history Unit ....................

  • Page 4: Safety Caution

    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.
  • Page 5 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.
  • Page 6 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. Meaning of symbols displayed on the unit This mark is for R32 refrigerant only.
  • Page 7 WARNING Capacitor connected within WARNING this disconnect or Open the service valves before the downstream upon shutdown operation, otherwise there might be the burst. wait 5 minute to allow capacitors to discharge. CAUTION CAUTION BURST HAZARD BURST HAZARD Open the service valves before the Open the service valves before operation, otherwise there might be the burst.
  • Page 8 Precaution for Safety The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker to the OFF position.
  • Page 9 When you access inside of the electric cover to repair electric parts, wait for about five minutes after turning off the breaker. Do not start repairing immediately. Otherwise you may get electric shock by touching terminals of high-voltage capacitors. Natural discharge of the capacitor takes Electric about five minutes.
  • Page 10 When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that coats the pipes may otherwise burn. When repairing the refrigerating cycle, take the following measures. 1) Be attentive to fire around the cycle. When using a gas stove, etc., be sure to put out fire before work;...
  • Page 11 When the refrigerant gas leaks, find up the leaked position and repair it surely. If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. When gas touches to fire such as fan heater, stove or cocking stove, it may generate noxious gases, causing a fire though the refrigerant gas itself is innocuous.
  • Page 12 Only a qualified installer ( 1) or qualified service person ( 1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
  • Page 13 1) Refer to the “Definition of Qualified Installer or Qualified Service Person.” Declaration of Conformity Manufacturer: TOSHIBA CARRIER (THAILAND) CO., LTD. 144 / 9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambol Bangkadi, Amphur Muang, Pathumthani 12000, Thailand TOSHIBA CARRIER EUROPE S.A.S...
  • Page 14 Specifications Sound power level (dBA) Model Weight (kg) Cooling Heating RAV-GM1601AT8P-E RAV-GM1601AT8JP-E RAV-GM1601AT8P-TR - 14 -...
  • Page 15 Refrigerant R32 This air conditioner adopts a new HFC type refrigerant (R32) which does not deplete the ozone layer. 1. Safety Caution Concerned to Refrigerant R32 Be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with refrigerant R32 during installation work or service work.
  • Page 16 <Caution items> 1) The opposite side dimension of the air-conditioner's flared nut using R32 and the shape of the charge port are the same as those of R410A. 2) Be careful not to charge refrigerant by mistake. Should the different type of refrigerant mix in, be sure to recharge the refrigerant 3) Do not mix the other refrigerant or refrigerating oil with the refrigerant.
  • Page 17 4. Tools Tools exclusive for R32/R410A (The following tools for R32/R410A are required.) : R32/R410A tools available : Partly unavailable, : R32/R410A tools un available Installation/service tools Applicability to R32 air Applicability to R22 air conditioner or not conditioner or not Tools / Equipment specification 1 Flare tool...

  • Page 18: Specifications

    1. SPECIFICATIONS 1-1. Outdoor Unit RAV-GM1601AT8P-E Model name Outdoor unit RAV-GM1601AT8JP-E 3 phase 380-415V 50Hz Power supply 3 phase 380V 60Hz (Power exclusive to outdoor is required.) Type Hermetic compressor Compressor Motor (kW) 3.75 Pole Refrigerant charged (kg) Refrigerant control...
  • Page 19 RAV-GM1601AT8P-TR Model name Outdoor unit 3 phase 380-415V 50Hz Power supply 3 phase 380V 60Hz (Power exclusive to outdoor is required.) Type Hermetic compressor Compressor Motor (kW) 3.75 Pole Refrigerant charged (kg) Refrigerant control Pulse motor valve Standard length Max. total length Inter connecting Additional refrigerant charge 35g/m...

  • Page 20: Operation Characteristic Curve

    1-2. Operation Characteristic Curve • Operation Characteristic Curve <Cooling> <Heating> 14.0 14.0 12.0 12.0 10.0 10.0 Compressor speed (RPS) Compressor speed (RPS) • Capacity variation ratio according to temperature <Heating> <Cooling> Capacity variation Condition Indoor: 27°C DB/19°C WB Condition Indoor Air flow volume: High Indoor: 20°C DB Pipe length: 7.5m Indoor Air flow volume: High...

  • Page 21: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Outdoor Unit - 21 -...
  • Page 22 RAV-TWP30E2, RAV-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 - 22 -...
  • Page 23 RBC-TRP100E (Simultaneous Triple) <Gas side> Header assembly Inner diameter Ø15.9 <Liquid side> Branch pipe assembly Inner diameter Ø9.52 Insulator Gas side socket Liquid side socket Ø15.9 Ø12.7 Ø9.5 Ø6.4 Ø15.9 Ø25.4 Ø9.5 Ø12.7 (External (External (External (External diameter) diameter) diameter) diameter) 3 pcs.

  • Page 24: Systematic Refrigerating Cycle Diagram

    3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM 3-1. Indoor Unit Single type (Combination of 1 indoor unit and 1 outdoor unit) (Indoor unit) Distributor (Strainer incorporated) TCJ sensor Strainer Air heat exchanger TC sensor Cooling Refrigerant pipe Refrigerant pipe at liquid side at gas side (Outer dia : ØB) (Outer dia : ØA)
  • Page 25 Triple type (Combination of three indoor units and one outdoor unit) Indoor A unit Indoor B unit Indoor C unit Distributor Distributor Distributor (Strainer (Strainer (Strainer TCJ sensor TCJ sensor TCJ sensor incorporated) incorporated) incorporated) Air heat Air heat Air heat exchanger exchanger exchanger...

  • Page 26: Outdoor Unit

    3-2. Outdoor Unit REFRIGERATING CYCLE DIAGRAM Heat exchanger Ø8, 2rows, 52 stages FP.1.3, flat fin Ø25 x L160 Cooling Heating Accumulator Rotary compressor R32: 2.4 kg. (1,700 CC) 3-3. Operation data Pressure Pipe surface temperature (°C) Temp Comp. (MPa) (kg/cm (TD) (TS) (TC)

  • Page 27: Wiring Diagram

    4. WIRING DIAGRAM Outdoor Unit D805 D804 D803 D802 D801 D800 - 27 -...

  • Page 28: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS Outdoor Unit Parts name Type Specifications Q'ty Compressor RX380A2T-20M 4P, 3750W Outdoor fan motor ICF-280-A100-1 Output 100W High pressure switch ON : 3.5MPa, OFF : 4.5MPa ACB-4UB166W PMV-Coil CAM-MD12TCTH-8 DC12V Reactor CH-86-2Z-T 5.46 - 6.14mH, 18.5A P.C.board for control and 1 fan motor drive (Upper) MCC-1626 —...

  • Page 29: Refrigerant R32

    6. . REFRIGERANT R This air conditioner adopted the R32 refrigerant 6. When an air conditioning system charged with a 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 refrigerant R32 is even when refrigerant leaks, its concentration 1.6 times higher than conventional refrigerant...
  • Page 30 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 19.1 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.
  • Page 31 c) Insertion of Flare Nut d) Flare Processing ØD 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/R32 or conventional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 32 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.

  • Page 33: Tools

    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. When the compound gauge’s pointer has indicated –0.1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn...

  • Page 34: Brazing Of Pipes

    3. Types of flux 6-5. Brazing of Pipes • Noncorrosive flux Generally, it is a compound of borax and boric 6-5-1. Materials for Brazing acid. 1. Silver brazing filler It is effective in case where the brazing temperature is higher than 800°C. Silver brazing filler is an alloy mainly composed of silver and copper.
  • Page 35 6-5-3. Brazing As brazing work requires sophisticated techniques, experiences based upon a theoretical knowledge, it Flow meter must be performed by a person qualified. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to Stop valve proceed with brazing while letting dry Nitrogen gas flow.

  • Page 36: Instructions For Re-Use Piping Of R22 Or R410A

    • In case the pipe diameter is Ø12.7 mm or less In the concurrent twin triple system, when TOSHIBA and the thickness is less than 0.7 mm, be sure to has specified that branching pipe is to be used, it can use new pipes for the refrigerant piping works.
  • Page 37 6-6-4. Curing of pipes When removing and opening the indoor or outdoor unit for a long time, cure the pipes as follows •Otherwise rust may be generated when moisture or foreign matter due to condensation enters the pipes. •The rust cannot be removed by cleaning, and new pipes are necessary.
  • Page 38 Existing piping The following settings are required when using a pipe Ø19.1 mm as the existing piping at the gas pipe side. Steps taken to s pport existing piping 1. Cut J805 (Jumper). 2. Set the circuit breaker to the ON position to turn on the power. Jumper wires ∗...

  • Page 39: Charging Additional Refrigerant

    6-6-6. Handling of Existing Pipe 6-6-7. Recovering Refrigerant When using the existing pipe, carefully check it for Use the refrigerant recovery equipment to recover the following: the refrigerant. • Wall thickness (within the specified range) 6-7. Charging additional refrigerant • Scratches and dents Amount of additional refrigerant shall be restricted by the •...

  • Page 40: Tolerance Of Pipe Length And Pipe Head

    6-8. Tolerance of Pipe Length and Pipe Head Twin system Total length (L + a or L + b) 50 m Pipe length Branch pipe length (a, b) 15 m (one way) Maximum difference between indoor units 10 m Refrigerant pipe (b –...
  • Page 41 n Triple system Total length (L + a, L +b, L+c) 50 m Pipe length Branch pipe length (a, b, c) 15 m (one way) Maximum difference between indoor units 10 m Refrigerant pipe (|a – b|, |b – c|, |c – d|) specification Between indoor units ( ∆...

  • Page 42: Additional Refrigerant Amount

    6-9. Additional Refrigerant Amount n Twin system <Formula for Calculating Additional Refrigerant Amount> Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of calculations by the following formula and operate the air conditioner as it is. Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) + Branch piping additional refrigerant amount (kg) α...
  • Page 43 n Triple system <Formula for Calculating Additional Refrigerant Amount> Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of calculations by the following formula and operate the air conditioner as it is. Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) + Branch piping additional refrigerant amount (kg) α...

  • Page 44: Piping Materials And Sizes

    6-10. Piping Materials and Sizes n Twin system Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40mg/10m or less in the amount of oil stuck on inner walls of pipe and 0.8mm in pipe wall thickness for diameters for diameters 6.4, 9.5 and12.7mm and 1.0mm, for diameter 15.9mm.

  • Page 45: Branch Pipe

    6-11. Branch Pipe n Twin system Now the refrigerant pipe is installed using branch pipes supplied as accessories. • Bend and adjust the refrigerant piping so that the branch pipes and pipe after branching become horizontal. • Fix the branch pipes onto a wall in a ceiling or onto a column. •...

  • Page 46: General Safety Precautions For Using R32 Refrigerant

    6-13. General safety precautions for using R32 refrigerant 6-13-1. Recovery 6-13-2. Decommissioning • When removing refrigerant from a system, either • Before carrying out this procedure, it is essential that for servicing or decommissioning,　it is recommended the technician is completely familiar with the good practice that all refrigerants are removed safely.

  • Page 47: Outdoor Control Circuit

    7. OUTDOOR CONTROL CIRCUIT 7-1. Outdoor unit control 7-1-1. P.C.board for Control and 1 fan drive (MCC-1626) - 47 -...
  • Page 48 7-1-2. P.C. board for compressor drive (MCC-1627) - 48 -...
  • Page 49 7-1-3. P.C.board for 2 fan drive (MCC-1603) LED Display D840 SW01 - 49 -...

  • Page 50: Outline Of Main Controls

    7-2. Outline of Main Controls 1. Pulse Modulating Valve (PMV) control 1) For PMV with 40 to 500 pulses during operation, respectively. 2) In cooling operation, PMV is controlled with the temperature difference between TS sensor and TC sensor. 3) For the temperature difference in item 2), 1 to 5K is aimed as the target in both cooling operation. 4) When the cycle excessively rose in both cooling operations, PMV is controlled by TD sensor.
  • Page 51 3. Current release control The output frequency and the output voltage are controlled by AC current value detected by T620 and T621 on the outdoor P.C. board so that input current of the inverter does not exceed the specified value. Current [A] Frequency down Hold...
  • Page 52 4-2. Heating fan control 1) An outdoor fan is controlled by TE sensor, TO sensor and compressor frequency. (It is controlled with W1 for minimum and the maximum is controlled according to the following table.) 2) At the start time, the fan is fixed for 3 minutes only with the maximum fan tap corresponded to the zone in the following table but it is controlled with TE sensor temperature after then.
  • Page 53 (In defective TO sensor) ˚C No power ˚C Intermittent power-ON • Power-ON 10 minutes: ON / condition ˚C 5 minutes: OFF TD < 30˚C ˚C Continuous power-ON Output power REQUIREMENT While heating the coil, the power sound may be heard. However it is not a trouble. 6.
  • Page 54 10. Defrost control 1 In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition in A zone to D zone. 2 The defrost operation is immediately finished if TE sensor temperature has become 12°C continuing for 3 seconds or more, or it also is finished when condition of 7°C <...

  • Page 55: Troubleshooting

    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. 1.
  • Page 56 <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. Is not 3-minutes delay (3 minutes after compressor OFF)? Is not the outdoor unit in standby status though the remote controller reached the setup temperature? Does not timer operate during fan operation?

  • Page 57: Troubleshooting

    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.
  • Page 58 Check code Cause of trouble occurrence Lamp indication Operation Timer Ready Heat exchanger sensor (TCJ) error Heat exchanger sensor (TC) error Indoor unit sensor error Alternate flash Heat exchanger sensor (TA) error Discharge temp. sensor (TD) error Heat exchanger temp. sensor (TE) error Heat exchanger temp.
  • Page 59 8-2-2. Others (Other than Check Code) Check code Cause of trouble occurrence Lamp indication 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 - 59 -...
  • Page 60 - 60 -...
  • Page 61 Error mode detected by outdoor unit Operation of diagnostic function Judgment and measures Check Status of air Cause of operation Condition code conditioner Disconnection, short of discharge Displayed when 1. Check discharge temp. sensor (TD). Stop temp. sensor (TD) error is detected 2.
  • Page 62 Operation of diagnostic function Judgment and measures Check Status of air Cause of operation Condition code conditioner Discharge temp. error 1. Check refrigerating cycle (Gas leak). Displayed when * Discharge temp. (TD) over Stop 2. Trouble of PMV (Pulse Motor Value). error is detected specified value was detected.
  • Page 63 Contents Error Display * When fixations of the errors were overlapped, the latest error is displayed. Display Error D800 D801 D802 D803 D804 D805 Normal Discharge temperature sensor (TD) error Heat exchanger temperature sensor (TE) error Heat exchanger temperature sensor (TL) error Outside air temperature sensor (TO) error Suction temperature sensor (TS) error Heat sink temperature sensor (TH) error...
  • Page 64 8-2-4. Diagnostic Procedure for Each Check Code (Outdoor Unit) 1) This section describes the diagnostic method for each check code displayed on the wired 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 wired remote controller is displayed only when the same error occurred continuously by multiple times while LED of the outdoor P.C.
  • Page 65 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [E04] – [Indoor/Outdoor communication error] Is setting of group address Check CODE No. [14]. of remote controller correct? Are inner wiring and indoor/outdoor Correct wiring indoor/outdoor control wires (1, 2, 3) correct? control wires...
  • Page 66 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F08] [Outside air temp. sensor (TO) error] Correct connector. Is connection of CN602 correct? Is resistance value of TO sensor correct? Sensor error → Replace Check outdoor P.C.
  • Page 67 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F31] [EEPROM error] Check outdoor P.C. board. Defect → Replace [H01] [Compressor break down] Is power supply voltage correct? Correct power supply line. AC342 to 457V Is wire connection correct? Compressor lead...
  • Page 68 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [H03] [Current detection circuit error] Check outdoor P.C. board. Defect → Replace [H04] [Case thermostat operation] Are CN500 connection and Correct connector. case thermostat correct? Case thermostat error →...
  • Page 69 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P04] [High pressure SW system error] Wiring check, Does high pressure switch operate? Is circuit wiring correct? Correct. Are parts of Parts check high pressure switch correct? Defective →...
  • Page 70 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P05] [Power supply error] Is there no open phase Correct wiring of the power supply? Is there no down or up of power supply voltage? Confirm electric construction, etc.
  • Page 71 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P19] [4-way valve inverse error] Is the 4-way valve Is operation of 4-way valve coil is normal? correct? Replace coil (Check pipe temp. and etc. in (Check the resistance value of 4-way valve.
  • Page 72 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P20] [High pressure protective operation] Is service valve Open service valve fully. fully opened? Reset the power supply and then make a test run. Is resistance value Replace TE sensor.
  • Page 73 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P22] [Outdoor Fan Motor (Upper side) error] Is AC mains voltage correct? Check wiring construction. (AC342 to 457V) Ask repair of power supply. Rotate shaft of the fan motor by hands during power-OFF.
  • Page 74 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P26] [Short-circuit of compressor drive element] Are connections of compressor lead and reactor correct? Correct wiring. (Check referring to the Wiring diagram.) Does the same error occur in Replace outdoor P.C.
  • Page 75 8-2-5. Diagnostic Procedure for Each Check Code (Outdoor Unit) Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ, TE, TS, TO sensors TD, TL sensors Representative value Representative value Resistance value (kΩ Ω Ω Ω Ω ) Resistance value (kΩ Ω Ω Ω Ω ) Temperature Temperature (°C)
  • Page 76 8-3. Table Inspection of outdoor unit main parts Parts name Checking procedure Measure the resistance value of each winding by using the tester. Compressor (Model : RX380A2T-20M) Position Resistance value Red – White White – Black 1.42Ω White Black Black – Red Under 20°C Outdoor fan motor Measure the resistance value of each winding by using the tester.

  • Page 77: Setup At Local Site And Others

    9. SETUP AT LOCAL SITE AND OTHERS 9-1. Calling of error history <Contents> The error contents in the past can be called. <Procedure> Push buttons simultaneously for 4 seconds or more to call the service check mode. Service Check goes on, the item code 01 is displayed, and then the content of the latest alarm is displayed.
  • Page 78 ■ 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> Gr construction check 3 minutes elapse Normal ∗...

  • Page 79: Others

    9-2. Others Recovering the refrigerant WARNING Don't admit air into refrigerant during recovery. Otherwise, the pressure in the freezing cycle might increase abnormally. Serious injury could occur if it bursts. [Recovering the refrigerant] • You need to recover the refrigerant when moving or repairing the indoor and/or outdoor units. You cannot do this while the air conditioner is running in cooling mode because a protective device will be tripped.

  • Page 80: Address Setup

    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.

  • Page 81: Address Setup & Group Control

    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.
  • Page 82 4. Single group operation • Each indoor unit controls the outdoor unit individually. Sub/Header Sub/Header Master/Header Sub/Header Sub/Header 5. Multiple groups operation (Manual address setting) Sub/Header Sub/Header Sub/Follower Master/Header Sub/Follower Sub/Follower • Header unit: The header unit receives the indoor unit data (thermo status) of the follower (Without identical line address &...
  • Page 83 10-2-2. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single 2) Twin 3) Triple (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.

  • Page 84: Remote Controller Wiring

    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...

  • Page 85: Confirmation Of Indoor Unit No. Position

    TEST Push buttons simultaneously for 4 seconds or more. (← ← ← ← ← Line address) Using the temperature setup buttons, to the CODE No. Using timer time buttons, set the line address. Push button. (OK when display goes on.) (←...
  • Page 86 2. To know the position of indoor unit body by address • To confirm the unit No. in the group control (Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.) <Procedure> The indoor unit numbers in the group control are successively displayed, and fan, louver, and drain pump of the corresponding indoor unit are turned on.

  • Page 87: Detachments

    11. DETACHMENTS Outdoor Unit Part name Procedure Remarks Common CAUTION procedure Be sure to put on the gloves at working time; otherwise an injury may be caused by a part, etc. 1. Detachment 1) Stop operation of the air conditioner and then turn off switch of the circuit breaker.
  • Page 88 Part name Procedure Remarks Discharge 1. Detachment port cabinet Discharge cabinet Carry out work of 1 of 1. Take off screws for the discharge cabinet and the partition plate. (ST1T Ø4 × 10, 4 pcs.) Take off screws for the discharge cabinet and the bottom plate.
  • Page 89 Part name Procedure Remarks Inverter box 1. How to remove Inverter cover 1) Proceed 1 of 1. WARNING Never disassemble the inverter for 3 minutes after power has been turned off Screw because an electric shock may be caused. 2) Take off the inverter cover. FAN-MOTOR (UPPER) Take off screws between the inverter cover and the inverter box.
  • Page 90 Part name Procedure Remarks 1. Detachment P.C.Board (for control 1) Carry out work of 1 of P.C.Board (For control and 1 fan motor drive) MCC-1626 and 1 fan motor drive) CN02 CN851 WARNING MCC-1626 Never disassemble the inverter for 3 CN502 minutes after power has been turned off because an electric shock may be caused.
  • Page 91 Part name Procedure Remarks P.C.Board 1. Detachment (for 1) Carry out work 1 of Screw compressor WARNING drive) Never disassemble the inverter for 3 MCC-1627 minutes after power has been turned off because an electric shock may be caused. 2) Take off screw 4 pcs. and life the PL-FIX-CDB up.
  • Page 92 Part name Procedure Remarks Fan motor Loosened by 1) Carry out works of 1 of 1 and 2. turning clockwise Propeller fan 2) Take off the flange nut fixing the fan motor and the propeller fan. ∗ The flange nut is loosened by turning clockwise.
  • Page 93 Part name Procedure Remarks 1. Removal of broken compressor Compressor 1) Take off the refrigerant gas. 2) Carry out works of 1 of 1 and 2, 3, 4. 3) Take off the piping panel (Front). Take off screws of the piping panel (Front) and the bottom plate.
  • Page 94 Part name Procedure Remarks 2. Mounting of compressor Compressor (Continued) 1) Mount the compressor in the reverse procedure of removal. NOTES: ∗ After exchange of the compressor, be sure to exchange the compressor lead. In this time, the compressor lead does not contact with the discharge pipe.
  • Page 95 Part name Procedure Remarks PMV coil 1. Detachment PMV coil 1) Carry out works of 1 of 1 and 3. 2) While pulling the coil upward and removing the spring which pinches the copper pipe, take off the coil from PMV main body.
  • Page 96 Part name Procedure Remarks Heat 1. How to remove the frame of heat " TO sensor exchanger exchanger 1) Recover the refrigerant gas. 2) Proceed 1 of 1, 2, 3, 4. 3) Take off TO-sensor. Using a burner remove the discharge pipe connected to the ASM-COND.
  • Page 97 Part name Procedure Remarks 1. Detachment High pressure 1) Recover the refrigerant gas. switch 2) Carry out works of 1 of 1. High pressure swith connector 3) Take off the inverter cover. CABLE-TIE take off screws between the inverter cover and the inverter box. (CTT2T Ø4 ×...

  • Page 98: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST Outdoor Unit 37 36 39 40 38 39 40 10 13 - 98 -...
  • Page 99 Model name Location RAV-GM Part No. Description 1601AT8P-E 1601AT8JP-E 1601AT8P-TR 43T42373 BASE PLATE ASSEMBLY 43T41545 COMPRESSOR(RX380A2T-20M) 43T54319 BIMETAL-THERMO 43T50307 HOLDER-THERMO 43T49357 RUBBER,CUSHION 43T97326 COMPRESSOR NUT 43T43626 DOWN CONDENSER ASSEMBLY 43T43628 DOWN CONDENSER WORKING 43T43627 UPPER CONDENSER ASSEMBLY 43T43629 UPPER CONDENSER WORKING 43T00781 VALVE FIXING PLATE COATING 43T46380...
  • Page 100 Inverter assembly (TD) Location Part Location Part Description Description 43T6W815 PC BOARD ASSY IPDU 43T60519 COMP LEAD ASSY 43T6W758 PC BOARD ASSY CDB & FAN UPPER 43T50372 TEMPERATURE SENSOR,TS 43T6W461 PC BOARD ASSY FAN LOWER 43T50385 TEMPERATURE SENSOR,TE 43T60413 FUSE (CHINA) 43T50376 SENSOR-TD 43T60419...
  • Page 101 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit 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 not exceed a set limit. The refrigerant R32 which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer.
  • Page 102 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

This manual is also suitable for:

Rav-gm1601at8jp-eRav-gm1601at8p-tr

Table of Contents