User manual TOSHIBA RAS-3M31SAH-E-1 SERVICE MANUAL

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Manual abstract: user guide TOSHIBA RAS-3M31SAH-E-1SERVICE MANUAL

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[. . . ] A00-9805 SUPPLEMENT SERVICE MANUAL AIR-CONDITIONER MULTI SPLIT WALL TYPE RAS-10SKH-E-1 x 2 / RAS-M18SAH-E RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1 RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E x2 x3 x4 PRINTED IN JAPAN, Apr. , 1998 ToMo CONTENTS 1. DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONSTRUCTION VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] From " " up to " " check operations of protection circuits for each block, and " " to " " check operations of the typical protection circuits. Table 9-2-3 Operating key Indication after operation " ON/OFF " TEMP . (Up) 1 is added to data before operation. (Example) " "" " TEMP . (Down) 1 is subtracted from data before operation. (Example) " "" " "AUTO" LOUVER 10 is subtracted from data before operation. (Example) " "" " "SET" LOUVER Data before operation is directly transferred. (Example) " "" " ­ 38 ­ Table 9-2-4 Block level Check code Check code Diagnosis function Air conditioner status Judgment and action Condition Block Indoor P . C. sensor (TA) short/break. Continued Indicated when 1. board. Indoor heat exchanger sensor (TC) short/break. Indoor fan lock, abnormality of indoor fan. Continued Indicated when 1. Check heat exchanger operation detected abnormal sensor. Disconnect the power plug detected abnormal from AC outlet, and pull out the connector (CN10) for the motor, then connect the plug of AC power cord again and turn the power on. Check the voltage between pin 1 and 2 of the connector (CN10). board is OK, check motor. Abnormality of other indoor unit P. C. Cable connection All off Indicated when Replace P. C. detected abnormal 1) Wrong wiring or All off disconnection of connective cable. 2) Outdoor heat exchanger sensor (TE) short/break. Indicated when 1. Check connective cable detected abnormal correct if wiring is wrong. If connective cable is OK, check outdoor heat exchanger sensor. Refrigerant system Compressor break down. All off 1. board. Contents detected by the check codes " "to " "are stored in memory of the microcomputer even if the power supply is turned off. Therefore, contents of operations in the past are all displayed. ­ 39 ­ 9-3. Power can not be Turned on (No Operation at All) <Preliminary checks> (1) Is the supply voltage normal?(2) Is the connection to the AC output OK? Operation Check Items Main cause Shut off the power supply from AC outlet once and turn it on after 5 seconds. Countermeasure Symptom NO Does the OPERATION lamp blink? [. . . ] (2 screws) 4) Remove the base plate (Left). (2 screws) x 2 Screws × 3 Screws * The method of replacing parts of lower unit is the same as upper unit. ­ 63 ­ 11. Set the switch (SW03) provided on the P board as follows. ON 1 2 3 4 5 6 1 2 3 4 5 6 ON 1 OFF ON 2 3 4 5 6 1 2 3 4 5 6 OFF ON OFF ON OFF <RAS-10SKH-E> OFF <RAS-13SKH-E> 2. [. . . ]

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