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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Lost-phase operation of power supply (3-phase models) 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. Check phase sequence, reverse phase, and phase loss. Check high-pressure switch circuit wiring. Failure of electronic expansion valve 3. 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. Check code is displayed only during operation. If indication disappears, check errors following "Checking Error Log" below. Check code Faulty indoor unit No. (2) Checking Error Log When an error occurs in the air conditioner, error log can be checked following the steps below. Error log can be checked in both operation ON and OFF states. Step Operation Press [SET] and [TEST] at the same time for 4 seconds or more. The LCD indication changes as shown below. Indication of "SERVICE CHECK" shows that the unit is in the error log mode. "01" (order of error log) is displayed. · The address of faulty indoor unit is displayed in the UNIT No. / buttons displays stored error log sequentially. [. . . ] with buttons. 4 I/U I/U I/U I/U I/U Refrigerant line address 1 Indoor unit address 1 Group address 1 1 2 2 1 3 2 2 1 2 2 2 2 Indoor unit 5 Set code address 6 For systems like this example, connect a wired remote controller independently without connecting R/C wires, and then set these addresses. Group address Individual: 0000 Header unit: 0001 Follower unit: 0002 Set indoor unit addresses with buttons. Press Indication on the LCD shows normal operation. with buttons. in case of group control 7 Group 8 Set code address 9 Set indoor unit addresses with buttons as follows: Individual= , header unit= follower unit= , 8 5 2 4 7 10 3 6 9 10 Press Indication on the LCD shows normal operation. [. . . ]