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Toshiba RAV-SM2804AT7ZG, RAV-SM2804AT8ZG-E service manual Outdoor Unit Refrigeranting Cycle Diagram

Models: RAV-SM2244AT8Z-E RAV-SM2804AT7ZG RAV-SM2804AT7 RAV-SM2804AT7Z RAV-SM2244AT7 RAV-SM2804AT8-E RAV-SM2244AT7Z RAV-SM2244AT7ZG RAV-SM2804AT8Z-E RAV-SM2244AT8ZG-E RAV-SM2804AT8ZG-E

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3. OUTDOOR UNIT REFRIGERANTING CYCLE DIAGRAM

RAV-SM2244AT8 (Z) (ZG) -E, RAV-SM2804AT8 (Z) (ZG) -E

RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG)

Muffler

Ø45 × 230 L

TD sensor

Compressor

DA550A3F-11M

Solenoid valve
			Check joint


			High-pressure side
				TO sensor
	Check	P	Pressure switch
	Check	P	Pressure switch
	valve

TL sensor

4-way

valve

Check joint

Low-pressure side

P	TE sensor

Pressure

sensor

Heat exchanger

Ø8, 2 rows, 60 stages + Ø9.5, 1 row, 60 stages

13-13 pass + under cool pass

TS sensor

Liquid tank

Ø45 × 420 L

Accumulator

(8500cc) Ø161.6

: Cooling		: Strainer
: Cooling		: Strainer
: Heating

Distributor

PMV 1

Packed valve

Ø12.7

PMV 2

Ball valve

Ø19.1

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Toshiba RAV-SM2804AT7ZG, RAV-SM2804AT8ZG-E, RAV-SM2244AT8ZG-E, RAV-SM2804AT8Z-E Outdoor Unit Refrigeranting Cycle Diagram

Contents

AIR-CONDITIONER Contents Replacement Indication Explanation Explanation of indicationsExplanation of illustrated marks Confirmation of warning label on the main unit Do not modify the products ∗ For details, refer to the parts listNever recover the refrigerant into the outdoor unit Catch the inner wires After repair work has finished, check there is no trouble Check the following items after reinstallationMetal section Earth position Limit even if the refrigerant leaks Flare nut Safety Caution Concerned to New RefrigerantPipe Materials Copper pipe Piping Used tool Usage General tools Conventional tools can be used Simultaneous double twin Combination Pattern Indoor Unit / Outdoor UnitRAV-SM2244AT series Simultaneous twin Simultaneous triple RAV-SM2804AT series Branch kit RAV-SM2244AT series Branch kit Way Cassette Type Indoor UnitTwin type Duct Type Twin type Ceiling Type Twin type Way Cassette Type Triple type Duct Type Triple type Ceiling Type Triple type High Wall Type Triple type Way Cassette Type Double twin type RAV-SM562MUT-E Compact 4-Way Cassette 600 × 600 Type Double twin type RAV-SM564SDT-E Slim Duct Type Double twin type Duct Type Double twin type Ceiling Type Double twin type High Wall Type Double twin type 2244AT8-E 2804AT8-E 2244AT7 2804AT7 Model Outdoor unit RAV-SM2244AT8 Z ZG -E, RAV-SM2804AT8 Z ZG -E Operation characteristic curve Digital InverterRAV-SM2244AT7 Z ZG, RAV-SM2804AT7 Z ZG Cooling Heating Capacity variation ratio according to temperature Construction Views External Views Joint pipe RBC-DTWP101E Simultaneous Double Twin Branch pipeModel ’ty Gas side socket Gas sideLiquid side RBC-TRP100E Simultaneous Triple Gas side 25.4 15.9 Liquid side 12.7 RBC-TWP101E Simultaneous Twin Branch pipe Outdoor Unit Refrigeranting Cycle Diagram RAV-SM2244 series Systematic diagram of refrigerating cycleRAV-SM2804 series Wiring Diagram Parts name Type Specifications Specifications of Electrical Parts Piping Materials and Joints Used Safety During Installation/ServicingCopper Pipes Joints Flare Processing Procedures and PrecautionsProcessing of Piping Materials R410A R22 R410A, R22 Clutch type Wing nut type 3 Dimensions related to flare processing for R410A / R22Flare and flare nut dimensions for R410A Flare and flare nut dimensions for R22 Nm kgfm Flare Connecting Procedures and PrecautionsWrenches available on the market Required Tools 1 Configuration of refrigerant charging Phosphor bronze brazing filler Low temperature brazing fillerFlux Reason why flux is necessary Materials for Brazing Silver brazing filler Brazing Characteristics required for fluxTypes of flux Piping materials for brazing and used brazing filler/flux Curing of Pipes Basic Conditions Needed to Reuse the Existing PipeRestricted Items to Use the Existing Pipes Branching Pipe for Simultaneous Operation System Existing pipe SW Switch Final Installation Checks Handling of Existing Pipe Recovering Refrigerant Outdoor Unit Control Circuit Configuration and Control SpecificationsPrint Circuit Board, MCC-1596 Compressor Ipdu F500 Print Circuit Board, MCC-1597 Fan Motor IpduCN700 Blue CN500 Red CN504 Blue Print Circuit Board, MCC-1599 Interface CDB Print Circuit Board, MCC-1600 Noise Filter Outline of Main Controls Discharge temperature release controlPMV Pulse Motor Valve control Fan Taps Revolution number Allocation rpm Outdoor fan revolution number controlCooling fan control Heating fan control Short interrupted operation preventive control Defrost controlElectrical current release control Over-current protective control Heat sink temperature detection controlHigh-pressure switch/Compressor case thermostat control Electrical current release value shift control 12. SV2 valve control Oil recovery control To ˚C Coil heating control Troubleshooting procedure TroubleshootingSummary of Troubleshooting Before troubleshooting Trouble Confirmation of lamp display Wireless remote controller type Cause of trouble occurrence TroubleshootingOutline of judgment Lamp indication Lamp indication Check code Cause of trouble occurrence Lamp indication Check code Others Other than Check Code Monitor Function of Remote Controller Switch Way valve inverse error Check Code List Outdoor Representative defective position Cause of operation Status Error mode detected by indoor unit Series Error mode detected by outdoor unit H03 Current detection circuit error Stop Power supply error of remote controller, Indoor Error display, which occurs at present Diagnostic Procedure for Each Check Code Outdoor UnitLED display on outdoor P.C. board Dip switch setup Latest error display Display Heat exchanger temp. sensor TL error → Display Display 2 Heat exchanger temp. sensor TE errorF07 Display Display 2 Heat exchanger temp. sensor TL error F13 Display 1 Display 2 Heat sink temp. sensor TH error F12 Display Display 2 Suction temp. sensor TS error H01 Display 1 Display 2 Compressor break down F31 Display 1 Display 2 Eeprom error H04 Display 1 Display 2 Case thermostat operation H03 Display Display 2 Current detection circuit error L10 Display Display 1 Display 2 Unset model type → Refer to L10 column Display Display 2 Communication error between MCU P04 Display High pressure SW system error Display Display 2 High pressure protective operation → Display Case thermostat operation → Refer to H04 column P19 Display Way valve inverse error P07 Display Heat sink overheat errorP15 Display Gas leak detection Cooling season Display 2 Short-circuit of compressor drive element Position detection circuit errorSingle operation check for outdoor fan P26 Representative value Temperature sensorTA, TC, TCJ, TE, TS, to sensors TD, TL sensors Calling of Error History Setup AT Local Site and OthersGroup Control Operation Usual regular communication Indoor unit power-ON sequenceBy feed unit Automatic address judgment Initial communication Defrost control Function Set position Control contents Operation part Specifications Operation contentsDisplay part Others Selection of LED display SW800, SW803 operation Switch Function / Contents ReferDisplay selection list ¥¥ll¡ Error display Kg/cm²G SetupDisplay Pressure SW804 Operation when pushdown button switch SW801 is pushed Specific operation for maintenance check SW801, SW804Specific operation For check RY703, CN703 check Address Setup Procedure Address Setup System Configuration Address Setup & Group ControlTerminology Only turning on source power supply Automatic completion Automatic Address Example from Unset Address No miswiringExample Standard One outdoor unit Single Twin Triple Simultaneous triple and double twin system Remote Controller WiringWiring diagram Simultaneous twin system Address Setup Manual setting from remote controller Button if the unit stops Confirmation of Indoor Unit No. PositionTo know the position of indoor unit body by address Button Part name Object Contents of check Contents of maintenance Maintenance/Check list Contents New Refrigerant Air Conditioner Installation Connect the connecting wire correctly Flare nuts and flare machining Tools/equipment Use How to use tools/equipmentWhen using the conventional piping When using general copper pipes 100 Parts name ’ty 101 102 Pipe diameter mm Allowable pipe length mTotal length Branch piping Indoor-outdoor H Upper Maximum SM2244 SM2804 104 Be sure to connect the earth wire grounding work Using the specified wires, ensure that the wires areConnected, and fix wires securely so that the external Tension to the wires does not affect the connecting That the valve is open 106 8 EarthingCheck the following before starting a test run That all pipes are connected securely without leaks SW802 107Reference outside Wall thickness Material Diameter mm Placement location Term Curing manner Cause Display mode108 Flare nut width H Existing pipe SW 110 Replacement of the Service P.C. Board 4316V392 MCC-1599Setting the jumper wires and DIP switches Model switching J800 to J803 111 HOW to Exchange CompressorExchanging Procedure of Compressor Outline Exchange of Compressor Detachment Detachments112 RAV-SM224, RAV-SM280 series 113 No. Part name Procedure 114 115 116 Part name Procedure Remarks 117 118 Temporary Suspended State Inverter Assembly front 119 Temporary suspended state Inverter Assembly IpduCompressor 1. Detachment Fan motor 1. Detachment 120 Compressor terminal 121 122 Fan guard 1. Detachment 123 25, 26 22, 23 47, 55 33, 34 124 Exploded Views and Parts List Location Model name Description RAV-SM2244 RAV-SM2804 125 704 Inverter Assembly126 127 128 25, 26 22, 23 47, 55 33, 34 AT7 AT7Z AT7ZG 129 130 712 2804AT7ZG 131Location Model name 2244AT7ZG Check of Concentration Limit Toshiba Carrier Corporation