User manual TOSHIBA RAV-SM802KRT-E SERVICE MANUAL

[. . . ] FILE NO. SVM-05053 SERVICE MANUAL HI WALL TYPE (INDOOR UNIT) RAV-SM562KRT-E RAV-SM802KRT-E R410A October, 2005 CONTENTS 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONSTRUCTION VIEWS (EXTERNAL VIEWS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SYSTEMATIC REFRIGERATING CYCLE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] and details. ) Auto reset ­ ­ ­ ­ Operation continuation ­ ­ ­ ­ Check code Lamp indication TCC-LINK central control Block indication OPERATION TIMER PREPARING Blinking C05 C06 No indication (when R/C is used together) C12 ­ P30 Depends on alarm No. above Note: Check code varies in some cases depending on the unit which detects errors even if its content is the same. Check codes detected by R/C or central controller are not always related to air conditioner operation. This table does not include check codes detected by outdoor unit or thermal storage unit. ON, Blinking, OFF, Alternate: Two LEDs blink alternately, Simultaneous: Two LEDs blink simultaneously (Main errors detected by outdoor unit) A/C operation Main faulty location Blinking Simultaneous Alternate Alternate Alternate Compressor breakdown Compressor locking Current detect circuit error Low-pressure system error Simultaneous Simultaneous Alternate Alternate Alternate Alternate Alternate Position detect error Inverter Idc activated Outdoor unit fan alarm High-pressure system error Abnormal outdoor unit discharge temperature Phase sequence error or others Other outdoor unit errors When compressor locking is detected When abnormal current is detected by AC-CT or when phase loss is detected Ps pressure sensor error. Other outdoor unit errors 1) MCU communication error between PDU and CDB, 2) IGBT heatsink temp. detect error When phase sequence of 3-phase current is abnormal (thermo sensor OFF operation continued) or other errors When discharge temperature release control detects an error When high-pressure switch or IOL is activated or when high-pressure release control by TE detects an error When outdoor unit fan drive circuit error (overcurrent, locking, etc. ) is detected When short-circuit prevention control for compressor drive circuit devices (G, Tr, IGBT) is activated When compressor motor position error is detected Short-circuit current Idc after direct current excitation is detected when reaching minimum frequency in current release control. sensor TO error When open-circuit or short-circuit of TO is detected Outdoor unit temp. sensor TE, TS error When open-circuit or short-circuit of TE, TS is detected Outdoor unit heat discharge sensor TD error When open-circuit or short-circuit of TD is detected Thermal storage unit error Typical error of thermal storage unit (Details are checked by R/C. ) Auto reset Description of failures Operation continuation Check code Lamp indication TCC-LINK central control and remote controller Block indication OPERATION TIMER PREPARING C15 F04 F06 F08 H01 H02 H03 H06 Check Code Table (Outdoor Unit) L29 L31 P03 P04 ­ 32 ­ P22 P26 P29 Note: The above check codes are typical examples. They vary with outdoor unit (including thermal storage unit) of combination. For details, see the Service Guide of applicable outdoor unit. Troubleshooting (Continued) Check Code Table Failure mode detected by indoor unit Diagnosis function Check code Possible causes E03 No signal reception from remote controller Air conditioner status Conditions OFF Indicated when an (auto reset) error is detected Judgment and action 1. · No indication on remote controller LCD (disconnection) · Central controller [C06] check code 1. When outdoor unit does not work at all · Check wires, correct wrong connection. When outdoor unit works normally Check boards (indoor unit receiver, outdoor unit transmitter) 1. Check remote controller connection (group/individual) change after power on. * If group configuration or address is not correct, the unit enters auto address setting mode automatically for address re-setting. Check indoor unit boards. E04 Serial signal from outdoor unit does OFF not reach indoor unit. (auto reset) · Wrong wire connection · Failure of outdoor unit serial transmitter · Failure of indoor unit serial receiver Duplication of indoor unit address Duplication of header indoor unit Group line in individual indoor unit Indoor unit group address not set Indoor unit capacity not set External interlock alarm input Failure of indoor unit DC fan OFF Indicated when an error is detected E08 L03 L07 L08 L09 L30 P12 Indicated when an error is detected OFF OFF OFF Indicated when an error is detected Indicated when an error is detected Indicated when an error is detected P19 Failure of 4-way valve system · Indoor unit heat exchange temperature lowers after HEAT operation starts. Indoor unit OFF during alarming to other indoor units Improper mounting, disconnection or short-circuit of indoor unit heat exchange sensor TCJ Improper mounting, disconnection or short-circuit of indoor unit heat exchange sensor TC Improper mounting, disconnection or short-circuit of indoor unit room temp. sensor TA Failure of indoor unit EEPROM · EEPROM access error Communication error between header and follower indoor units OFF (auto reset) Indicated when an error is detected P31 OFF (follower units) (auto reset) OFF (auto reset) OFF (auto reset) OFF (auto reset) OFF (auto reset) OFF (auto reset) 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 Indicated when an error is detected F01 F02 F10 F29 E18 ­ 33 ­ Failure mode detected by outdoor unit (Representative codes) · The check code used varies depending on the combination with the outdoor unit. Check code H01 Diagnosis function Possible causes Air conditioner status OFF Compressor breakdown · Compressor stops due to operating frequency decrease. · Overcurrent protection circuit is activated after a certain time from compressor startup. 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. [. . . ] · Sub indoor unit : Receives data from the main indoor unit with same refrigerant line address and serial interface with O/U, and performs thermo operation in synchronization with the main unit. (Example) 1-1 main unit communicates with 1-2 and 1-3 sub units without being affected by indoor units with refrigerant line address 2 or 3. ­ 72 ­ [2] Examples of Auto Address Setting from No Address Setting 1) Standard (one outdoor unit) a) Single b) Twin (1-1) (1-2) 1-1 (H/M) individual 1-2 H/M 1-1 F/S *** Turn ON the power. *** 2) Group operation (multiple O/U = multiple indoor units with serial communication interface, no twin) 2-1 F/M 1-1 F/M 3-1 H/M 8-1 F/M 8 indoor units maximum *** Turn ON the power. *** 3) Multiple group operation A (single) B (triple) C (double) 2-1 F/M 1-1 F/M 2-1 F/S 3-3 H/S 3-1 F/M 2-2 F/S 1-2 F/S 3-2 F/S *** Address change required *** Change sub unit addresses at the same time manually from remote controller. 2-1 1-1 1-2 1-3 3-1 3-2 3-3 3-4 H: F: M: S: Header indoor unit Follower indoor unit Main indoor unit Sub indoor unit ­ 73 ­ 3. [. . . ]