User manual TOSHIBA RAV-387 CED SERVICE MANUAL

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Manual abstract: user guide TOSHIBA RAV-387 CEDSERVICE MANUAL

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[. . . ] WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS OF ELECTRICAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REFRIGERANT R410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDOOR UNIT CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] For details, see the Service Guide of applicable outdoor unit. ­ 29 ­ Others (Excluding check code) Lamp indication OPERATION TIMER PREPARING Check code ­ Possible causes Trial operation in progress Simultaneous blinking OPERATION TIMER PREPARING ­ Invalid setting (Auto cooling/heating setting for auto cooling/heating unavailable unit or heating setting for cool only unit) Alternate blinking Error mode detected by remote controller or central controller Check code No indication (remote controller disabled) Diagnosis function Possible causes Air conditioner status No communication with OFF header indoor unit Remote controller is not connected correctly. No communication with header indoor unit Disconnection between remote controller and header indoor unit (detected by R/C) Signal transmission error to indoor unit (detected by R/C) OFF (auto reset) *Operation continues under central control Conditions ­ Judgment and action Failure of remote controller power supply or indoor unit EEPROM 1. Check central control network address setting. E01 *2 Indicated when an error is detected E02 E09 OFF (auto reset) *Operation continues under central control Multiple remote controller OFF (Follower R/C headers (detected by R/C) continues operation) Duplication of indoor unit collective address during communication of central control system (detected by indoor unit/ central controller) Failure of central control communication circuit (detected by central controller) OFF (auto reset) Indicated when an error is detected Indicated when an error is detected L20 Central controller L20 ­ *3 Central controller (T ransmission) C05 (Reception) C06 ­ Central controller P30/b7 Indicated when an error is detected Operation Indicated when an continues (following error is detected R/C) 1. Check communication line, wrong connection, and indoor unit power supply. Check the unit's check code with remote controller Failure of indoor unit group Continue/OFF (depending on follower unit. situation) Indicated when an error is detected *2 No check code can be indicated by wired remote controller. (Normal operation of air conditioner cannot be controlled by wired remote controller. ) Check codes are indicated by the lamps for wireless models. *3 This is an error related to communication of remote controller (A, B) or central control system (TCC-LINK U3, U4). Remote controller indicates E01, E02, E03, E09, E18 or no code according to situation. ­ 30 ­ ON, Blinking, OFF, Alternate: Two LEDs blink alternately, Simultaneous: Two LEDs blink simultaneously (Detected by indoor unit) A/C operation Main faulty location Auto reset Operation continuation Indoor unit ­ R/C communication error Indoor unit ­ out door unit serial communication error Duplication of indoor unit address Communication error between indoor unit MCUs Communication error between header and follower indoor units Indoor unit heat exchange sensor TCJ Indoor unit heat exchange sensor TC Indoor unit room temp. sensor TA Indoor unit other boards Duplication of indoor group header unit setting Group line in individual indoor unit Indoor group address not set Indoor unit capacity not set Duplication of central control refrigerant line address External alarm input into indoor unit (interlock) Indoor unit AC fan Indoor unit water overflow Indoor unit DC fan Four-way valve system Other indoor unit errors When float switch is turned on When indoor unit DC fan alarm (overcurrent, locking, etc. ) is detected When an alarm is detected during heating due to temperature drop of heat exchange sensor Follower units in the group are disabled due to alarm (E03/L03/L07/L08) of header unit Alarm stop by external alarm input (CN80) When indoor unit AC fan alarm is detected (Fan motor thermal relay is activated. ) Duplicated central control refrigerant line address is set. When indoor group address is not set When multiple header units exist in the group When there is at least one group connection indoor unit in individual indoor unit Failure of EEPROM (Other errors are also detected in some cases. Failure of current detect circuit · Large AC current even during compressor OFF · Phase loss in power supply Low-pressure switch ON (applicable models) COOL : 30 seconds HEAT : 10 minutes Other outdoor unit errors · CDB-IPDU communication error (connector disconnection) · Abnormal heatsink temperature (over specified value) Phase detection protection circuit activated (normal models) OFF Conditions Indicated when an error is detected Indicated when an error is detected Judgment and action 1. Lost-phase operation of power supply Check 3-phase power voltages and wiring. Freezing cycle overload operation H02 H03 Indicated when an error is detected H06*1 OFF Indicated when an error is detected L29 OFF Indicated when an error is detected L31*1 Operation continued (compressor OFF) OFF Indicated when an error is detected 1. Overcurrent protection circuit operation of outdoor unit fan driver 3. The circuit is activated even after compressor's 3P connector is disconnected. Check outdoor unit CDB board. P03 Abnormal discharge temperature (over specified value) Indicated when an error is detected Indicated when an error is detected P04 P22 Failure of high-pressure protection circuit OFF (Temperature over specified value detected by TE sensor) High-pressure switch (normal models) OFF Failure of outdoor unit DC fan Indicated when an error is detected P26 P29 OFF Inverter overcurrent protection circuit activated (short time) Main circuit short voltage operation OFF Failure of IPDU position detect circuit Improper mounting, disconnection OFF or short-circuit of outdoor unit temp. sensor TD Improper mounting, disconnection OFF or short-circuit of outdoor unit temp. sensor TE, TS Improper mounting, disconnection or short-circuit of outdoor unit outside air temp. sensor TO Operation continued Indicated when an error is detected Indicated when an error is detected Indicated when an error is detected Indicated when an error is detected Indicated when an error is detected F04 F06 F08 *1 ROA-P*** is not detected by 1HS models. Fan continues rotating in a failure mode detected by outdoor unit because there is no communication between outdoor unit and follower indoor unit in twin group. ­ 34 ­ Troubleshooting (Continued) 2. Troubleshooting by Remote Controller Check Indication Main Remote Controller (RBC-AMT31E) (1) Checking When an error occurs in the air conditioner, a check code and an indoor unit number appear on the LCD of remote controller. [. . . ] Sub indoor unit : Indoor units except the main indoor unit in a twin, triple or double twin system. (Sub unit) Communicates with the main indoor unit with the same refrigerant line address, and provides control in synchronization with the main indoor unit. It does not (Twin follower) communicate with O/U (no detection of serial signal alarm). Group address [1] System Configuration b) Twin a) Single Outdoor unit Indoor unit 1:1 (H/M) individual 1-2 H/M 1-1 F/S 1-4 F/S 1-3 F/S R/C c) Single group operation 2-1 F/M 1-1 F/M 4-1 H/M 3-1 F/M 8-1 F/M · Each indoor unit controls outdoor unit individually. d) Multiple single/twin/triple group operation (manual address setting) 2-1 F/M 1-1 F/M 1-2 F/S 1-3 F/S 3-3 H/M 3-4 F/S 3-2 F/S 3-1 F/S H: F: M: S: Header indoor unit Follower indoor unit Main indoor unit Sub indoor unit · Main indoor unit : Receives data (thermo status, etc. ) from sub indoor units with same refrigerant line address, and controls O/U compressor referring to the self thermo status. [. . . ]

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