Toshiba RAV-SM404MUT-TR, RAV-SM454MUT-E, RAV-SM1404BT-E, RAV-SM1104BT-E, RAV-SM1404BT-TR P12 error

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[P12 error]

Turn off the power.

Are not there connections errors or

disconnection on connectors CN333 and CN334

of indoor unit P.C. board (MCC-1402)?

NO

Remove connectors CN333 and CN334 of indoor unit P.C. board (MCC-1402).

Does the fan rotate without trouble when handling the fan with hands?

YES

YES

NO

Correct connection of connector.

Replace indoor fan motor.

Are resistance values between phases

at fan motor connector CN333 motor side of indoor P.C. board (MCC-1402) correct? *1

YES

Is resistance value of fan motor connector CN333 at motor side of indoor P.C. board (MCC-1402) correct? *2

YES

Is signal output of indoor fan motor

position detection correct? *3

YES

Check indoor P.C. board

(MCC-1402).

Defect → Replace

NO

Replace indoor fan motor.

*1

• Are not coil windings between 1 (Red lead) and 3 (White lead), between 3 (White lead) and 5 (Black lead), between

5(Black lead) and 1 (Red lead) opened or shorted? → For resistance, see the following values.

Approx. 70 to 100Ω	SM56, SM80
35 to 50Ω	SM110, SM140

NO

Replace indoor fan motor.

*2

Check resistance of fan motor position detection circuit.

Is not coil winding between 1 (Yellow lead) and 4 (Pink lead) opened or shorted? → Resistance: Approx. 5 to 20kΩ

NO

Replace indoor fan motor.

*3

Check fan motor position detection signal.

•Using a tester, measure the voltage between CN334 1 and 5 of indoor P.C. board (MCC-1402) under condition that CN333 and CN334 are mounted and the power is turned on.

→Rotate the fan slowly with hands, and check the pin voltage swings between 0 to 5V voltage.

•Between 4 and 5 : 5V

CN333

CN334

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Contents Split Type Contents Indoort Unit TroubleshootingOriginal instruction Explanation of illustrated marks Explanation of indicationsWork undertaken Protective gear worn Indication ExplanationDescription Confirmation of warning label on the main unitPrecaution for Safety Proceeding with the repair work Refrigerant used by this air conditioner is the R410A Resistance and water drainage Explanations given to user RelocationDeclaration of Conformity Specifications Copper pipe Piping Safety Caution Concerned to New RefrigerantFlare nut JointGeneral tools Conventional tools can be used ToolsSM56 type Round duct Concealed Duct typeSM110 type Round duct RAV-SM404MUT∗, RAV-SM454MUT∗, RAV-SM564MUT∗ Space required for Installation and servicingRAV-SM564BT∗, RAV-SM804BT∗, RAV-SM1104BT∗, RAV-SM1404BT∗ DimensionRAV-SM564CT∗, RAV-SM804CT∗, RAV-SM1104CT∗, RAV-SM1404CT∗ Compact 4-way Cassette Type RAV-SM564BT ∗, RAV-SM804BT ∗, RAV-SM1104BT ∗, RAV-SM1404BT ∗ RAV-SM564CT ∗, RAV-SM804CT ∗, RAV-SM1104CT ∗, RAV-SM1404CT ∗ Ceiling TypeParts name Type Specifications Specifications of Electrical PartsCase of Connection of Wired Simple Remote Controller Indoor Controller Block DiagramWireless remote controller Case of Connection of Wireless Remote ControllerMax units Control outline Command Outline of specifications RemarksTemperature in heating Heat Ceiling type Outline of specificationsTcn TcjTc n ConditionsSetup at shipment All operations Cooling/dry operation Heating/fan operationAll modes AlarmCase of wired remote controller LCD Figure if To 28C Setup AT Local Outline of specifications Remarks TCJ Exct Disp CHK MCC-1402Indoor P.C. Board Optional Connector Specifications MCC-1402 Before troubleshooting Summary of TroubleshootingTroubleshooting procedure Wired remote controller typeWireless remote controller type Lamp indication Check code Cause of trouble occurrence Outline of judgmentLamp indication Check code Others Other than Check Code Remote controller detected Indoor unit detectedCentral control devices detected Error mode detected by indoor unit Check Code ListAir conditioner Error mode detected by outdoor unitOperation of diagnostic function Check Status Power supply error of remote controller, Indoor E09 error Check code E01 errorE10 error E04 errorE18 error E08, L03, L07, L08 errorL09 error L20 error L30 errorP30 error Central controller F10 error P10 errorP12 error Check by tester P19 errorExchange to cooling cycle Exchange to heating cycleF01 error F02 errorC06 error 11 model connection interface E03 error Master indoor unit F29 errorP31 error Follower indoor unit TA, TC, TCJ, TE, TS, to sensor Temperature Resistance value characteristic tableTA, TC, TCJ, TE,TS, to sensor TD, TL sensorPosition Resistance value Part name Checking procedureCase Replacement proceduresSetting data read out from Eeprom C. Board for indoor unit servicing replacement proceduresCode No. required at least Contents MCC-1402 Writing the setting data to EepromSetting data Type Type name abb Setting data Factory-set valueSetting data Type Type Code NoCompact 4-way Cassette Type and Concealed Duct Type Test Run Setup on Remote Controller Wired remote controllerTest cooling operation Test heating operation Procedure DescriptionPractical operation LED Display on Indoor P.C. Board D002 RedD203 Red Using the set temperature Function Selection SetupTo change the selected indoor unit, proceed to Procedure To change item to be set up, proceed to ProcedureDescription At shipment Item No. DN table Selection of functionDescription At shipment When connected 2 remote controllers operate an idoor unit Wireless remote controllerWhen connected 2 remote controllers operate the twin Setup methodContents Pushing Test button returns the display to usual display Calling of error history ContentsGroup control operation System exampleIndoor unit power-ON sequence Initial communicationUsual regular communication Model connection interface wiring connection Microprocessor block diagramModel Connection Interface TCC-LINK adapter Model name TCB-PCNT30TLEC. Board Switch SW01 Setup Wiring SpecificationsExternal view of P.C. board assembly How to set up from indoor unit side by remote controllerAddress setup Push Test + Vent buttons for 4 seconds or moreDuring unset time, At shipment from factory is displayed Address setup procedure Address SetupAddress Setup & Group Control Terminology System configurationExample Only turning on source power supply Automatic completion Automatic Address Example from Unset Address No miswiringPush SET + CL + Test buttons Using timer time Buttons, set the line addressSimultaneously for 4 seconds or more ButtonProcedure To know the position of indoor unit body by addressButton if the unit stops Ceiling panel RBC-UM11PGWE Preparing work Part name ProcedureDetachment AttachmentPart name Procedure Remarks Panel has directionality Part name Procedure Remarks Ceiling panelNo. Part name Procedure RemarksElectric parts box No. Part name Procedure Fan motor 1. Detachment Drain pump 1. Detachment Drain pan 1. DetachmentPart name Procedure Remarks Heat Exchanger Recover refrigerant gasDetails of sensor lead wire drawing RAV-SM∗∗∗BT ∗ Part name Procedure RemarksFan motor Remove the Multi blade fan † Drain pump Remove the drain pan and float switch 100 No. Part name Procedure Remarks101 102 103 237 209222 104105 Location Description Model name404MUT-E 454MUT-E 564MUT-E 404MUT-TR 454MUT-TR 564MUT-TR 106401 Electric parts107 Location Model name108 RAV-SM564BT-E RAV-SM564BT-TR 109110 RAV-SM804BT-E RAV-SM804BT-TR 111112 1104BT-TR 113114 Location Model name RAV-SM Description564BT-E 804BT-E 1104BT-E 1404BT-E 264 220115 116 Description Model name RAV-SMLocation 117 Description 564CT-E 804CT-E 1104CT-E 1404CT-E 118Check of Concentration Limit Toshiba Carrier Corporation