Manuals / Toshiba / Household Appliance / Air Conditioner

Toshiba RAV-SM2804AT7, RAV-SM2804AT8ZG-E, RAV-SM2244AT8ZG-E, RAV-SM2804AT8Z-E, RAV-SM2244AT7ZG 74

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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Page 74

– 74 –

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]

¡

¡

¡

l

Is there no gas leak?

NO

Repair defective position.

l

l

Is refrigerant charge amount adequate?

Recharge refrigerant.

¡

l

YES

¡

¥

NO

Repair defective position.

¡

¥

Is PMV

normal?

Replace defective part.

YES

Is it not abnormal overload?

YES

Correct and clear the cause.

NO

Is CN603 connection normal?

NO

Correct connector.

Is resistance value of TD sensor normal?

Sensor error →

Replace

YES

Check outdoor P.C. board (MCC-1599).

Defect → Replace

[P04]

∗ 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. (1) high-pressure SW system error,

(2) power supply error (Vdc), (3) high-pressure protective operation, (4) case thermo operation.

<Display 1>

<Display 2>

[High pressure SW system error]

¡

¡

Power supply error (Vdc), High pressure protective operation, Case thermostat

¡

l

operation.

l

l

Doesn’t high pressure switch

NO

NO

Is circuit wiring normal?

Wiring check,

¥

¡

operate?

Correct.

l

¡

YES

YES

¡

l

Are parts of

NO

Parts check

high pressure switch normal?

Defective →

Replace

YES

NO

Is service valve fully opened?

Open service valve fully.

YES

Reset the power supply and

B

←

Cooling operation

then do a trial operation according

C

←

Heating operation

to the season.

Check Comp. IPDU PC board

B Cooling operation.

Defective →

Replace

NO

Is there no fan breakage

NO

Does cooling outdoor fan

normally operate?

or coming-off?

YES

YES

Repair defective position.

Connection of connectors,

Fan IPDU, Fan motor, Wiring.

Is there any element

YES

which blocks heat exchanger

Elimination of

of the outdoor unit?

blocking element

Clogging of heat exchanger

Short circuit

NO

Overcharge of refrigerant/

Clogging/Pipe breakage/

Abnormal overload

– 74 –

Image 74

Toshiba RAV-SM2804AT7, RAV-SM2804AT8ZG-E, RAV-SM2244AT8ZG-E, RAV-SM2804AT8Z-E, RAV-SM2244AT7ZG, RAV-SM2804AT8-E 74

Contents

SERVICE MANUAL OUTDOOR UNITDIGITAL INVERTER AIR-CONDITIONERCONTENTS REPLACEMENT OF Explanation SAFETY CAUTIONIndication Mark– 5 – – 6 – 2.Cautions on Installation/Service • New Refrigerant R410A1. Safety Caution Concerned to New Refrigerant 3.Pipe Materials4.Tools General tools Conventional tools can be usedSimultaneous double twin RAV-SM2244ATseries Simultaneous twinSimultaneous triple <RAV-SM2804ATseries> Simultaneous twinBranch kit – 10 –RAV-SM2244ATseries RAV-SM2804ATseries1-1-1. 4-WayCassette Type 1. SPECIFICATIONS1-1.Indoor Unit <Twin type>– 12 – 1-1-2.Duct Type <Twin type>– 13 – 1-1-3.Ceiling Type <Twin type>– 14 – 1-1-4. 4-WayCassette Type <Triple type>– 15 – 1-1-5.Duct Type <Triple type>– 16 – 1-1-6.Ceiling Type <Triple type>– 17 – 1-1-7.High Wall Type Triple type– 18 – 1-1-8. 4-WayCassette Type Double twin typeRAV-SM562MUT-E – 19 –Indoor unit RAV-SM562MUT-E– 20 – 1-1-10.Slim Duct Type <Double twin type>– 21 – 1-1-11.Duct Type <Double twin type>1-1-12.Ceiling Type <Double twin type> – 23 – 1-1-12.High Wall Type Double twin type1-2.Outdoor Unit – 24 –Cooling RAV-SM2244AT8Z ZG -E, RAV-SM2804AT8Z ZG -ERAV-SM2244AT7Z ZG, RAV-SM2804AT7Z ZG <Heating>RAV-SM2244AT7Z ZG, RAV-SM2804AT7Z ZG – 26 –RAV-SM2244AT8Z ZG -E, RAV-SM2804AT8Z ZG -E <Cooling>2. CONSTRUCTION VIEWS EXTERNAL VIEWS 2-1.Outdoor UnitBranch pipe – 28 –RBC-DTWP101ESimultaneous Double Twin <Joint pipe>RBC-TRP100ESimultaneous Triple <Gas side><Liquid side> Gas side socket<Branch pipe> – 30 –RBC-TWP101ESimultaneous Twin <Joint pipe>RAV-SM2244AT8Z ZG -E, RAV-SM2804AT8Z ZG -E 3. OUTDOOR UNIT REFRIGERANTING CYCLE DIAGRAM– 31 – RAV-SM2244AT7Z ZG, RAV-SM2804AT7Z ZGRAV-SM2804series Systematic diagram of refrigerating cycleRAV-SM2244series 4. WIRING DIAGRAM 4-1.Outdoor UnitRAV-SM2244AT8Z ZG -E, RAV-SM2804AT8Z ZG -E 5. SPECIFICATIONS OF ELECTRICAL PARTS5-1.Outdoor Unit RAV-SM2244AT7Z ZG, RAV-SM2804AT7Z ZG6. REFRIGERANT R410A 6-1.Safety During Installation/Servicing6-2.Refrigerant Piping Installation 6-2-1.Piping Materials and Joints Used6-2-2.Processing of Piping Materials 1.Flare Processing Procedures and Precautions1.Joints Table 6-2-1Thicknesses of annealed copper pipesFlare and flare nut dimensions for R22 Fig. 6-2-1Flare processing dimensionsFlare and flare nut dimensions for R410A TableOuter diameter 2.Flare Connecting Procedures and PrecautionsNominal Tightening torque6-4.Recharging of Refrigerant Fig. 6-4-1Configuration of refrigerant charging6-3.Tools 6-3-1.Required Tools6-5-1.Materials for Brazing 3.Low temperature brazing filler6-5-2.Flux 1.Reason why flux is necessary 1.Silver brazing filler6-5-3.Brazing 2.Characteristics required for flux3.Types of flux Never use gas other than Nitrogen gasInstruction of Works 6-6-2.Restricted Items to Use the Existing Pipes6-6-4.Curing of Pipes If the definite conditions can be cleared6-6-5.Final Installation Checks – 43 –6-6-6.Handling of Existing Pipe Cautions for using existing pipe6-6-7.Recovering Refrigerant – 44 –7-1.Outdoor Unit Control – 45 –7-1-2.Print Circuit Board, MCC-1597Fan Motor IPDU – 46 –7-1-3.Print Circuit Board, MCC-1599Interface CDB – 47 –7-1-4.Print Circuit Board, MCC-1600Noise Filter – 48 –1.PMV Pulse Motor Valve control 2.Discharge temperature release control7-2.Outline of Main Controls 3-1.Cooling fan control 3.Outdoor fan revolution number control– 50 – 3-2Heating fan control6.Electrical current release control 4.Defrost control5.Short interrupted operation preventive control 9.Over-currentprotective control 7.Heat sink temperature detection control8.Electrical current release value shift control 11.High-pressurerelease control– 53 – 13.Oil recovery control12.SV2 valve control 14.Coil heating control – 54 –1. Before troubleshooting 8. TROUBLESHOOTING8-1.Summary of Troubleshooting 2. Troubleshooting procedure<Wireless remote controller type> 1. Before troubleshooting2.Troubleshooting procedure – 56 –8-2.Troubleshooting 8-2-1.Outline of judgmentCheck code – 58 –Lamp indication Cause of trouble occurrence8-2-2.Others Other than Check Code – 59 –Page Page – 62 – Judgment and measures Error mode detected by indoor unitOperation of diagnostic function Cause of operationError mode detected by outdoor unit – 64 –Judgment and measures Operation of diagnostic functionCheck code Indoor unit– 66 – <Error display, which occurs at present> Dip switch setup<Latest error display> LED display on outdoor P.C. boardPage – 69 – – 70 – – 71 – – 72 – ¡l l l – 74 – – 75 – – 76 – Check Check and troubleshooting– 77 – Outdoor– 78 – TD, TL sensors Temperature sensorTA, TC, TCJ, TE, TS, TO sensors TA, TC, TCJ, TE, TS, TO sensors4 seconds or more to call the service check mode <Contents>Procedure REQUIREMENTnIndoor unit power-ONsequence 9-3.Outdoor Unit – 82 –Operation part D805 D804 D803 D802 D801 D8001.Outline Display part– 84 – 9-3-3.Others1.Selection of LED display SW800, SW803 operation 1Display selection listlllll¡ lllll¡ SW804 – 87 –<Specific operation> – 88 – SW80410. ADDRESS SETUP 10-1.Address Setup Procedure<Terminology> 10-2.Address Setup & Group Control10-2-1.System Configuration – 91 – Example– 92 – Change is necessarySimultaneous twin system 10-3.Remote Controller WiringWiring diagram Simultaneous triple and double twin system1 2 3 4 5 6 7 8 9 10 11 END 2, 5,3, 6, 9 4, 7, 10-5.Confirmation of Indoor Unit No. Position 1 2 END1 2 3 END <Maintenance/Check list> – 96 –Contents 1 ACCESSORY PARTS– 98 – 2 SAFETY PRECAUTIONS3 INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER Digital Inverter„Before installation 4 INSTALLATION CONDITIONS„Required Tools/Equipment and Precautions for Use Electrical wiringDigital Inverter „Installation Location„Necessary Space for Installation Unit: mm Digital InverterSerial installation in front and rear „Installation of Outdoor Unit„Optional Installation Parts Locally procured Knockout procedureBranch pipe installation „Connecting the Gas Side Pipe„Tightening of Connecting Part „Branch Pipe„Airtight Test 6 AIR PURGING„Refrigerant Pipe Length „Air Purge„Insulating the Pipes „How to Open the ValveRefrigerant replenishing procedure „Replenishing RefrigerantDigital Inverter How to wire „ Wiring between Indoor Unit and„Power and Wiring Specifications Wiring diagram9 FINISHING 11 ANNUAL MAINTENANCEStripping length power cord and connecting wire 10 TEST RUNCautions for using existing pipe 14 TROUBLESHOOTING„Recovering Refrigerant 13 FUNCTIONS TO BE IMPLEMENTED LOCALLYD805 15 APPENDIXDigital Inverter D804Digital Inverter Existing pipe SWPage 13-2.Exchange of Compressor 13. HOW TO EXCHANGE COMPRESSOR13-1.Exchanging Procedure of Compressor Outline 2.Attachment RAV-SM224, RAV-SM280series1.Detachment 1. Detachment1. Detachment Procedure– 113 – 2. Attachment– 114 – 2. Attachment2. Attachment – 115 –1. Detachment Attachment – 116 –Detachment 2. Attachment – 117 –1. Detachment – 118 – Procedureof Inverter Assembly front 1. Detachment2. Attachment – 119 –9Compressor 1. Detachment 2. Attachment – 120 –10Fan motor 1. Detachment No. Part name Procedure– 121 – <Compressor terminal>4.Refrigerant charge 11Compressor 2. Attachment3.Vacuuming 12Pulse motor 1. Detachment2. Attachment 12313Fan guard 1. Detachment 15. EXPLODED VIEWS AND PARTS LIST 15-1.Outdoor Unit– 125 – 15-2.Inverter Assembly – 127 – 15-3.Outdoor Unit – 129 – 15-4.Inverter Assembly Model name – 131 –Location RAV-SMWARNINGS ON REFRIGERANT LEAKAGE Check of Concentration LimitTOSHIBA CARRIER CORPORATION