User manual TOSHIBA RAV-SM2804AT7ZG SERVICE MANUAL

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[. . . ] A09-004 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE OUTDOOR UNIT <DIGITAL INVERTER> RAV-SM2244AT8-E RAV-SM2804AT8-E RAV-SM2244AT8Z-E RAV-SM2804AT8Z-E RAV-SM2244AT8ZG-E RAV-SM2804AT8ZG-E RAV-SM2244AT7 RAV-SM2244AT7Z RAV-SM2244AT7ZG RAV-SM2804AT7 RAV-SM2804AT7Z RAV-SM2804AT7ZG R410A PRINTED IN JAPAN, Jun, 2009 ToMo Adoption of New Refrigerant This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer. WARNING Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it. The cleaning diagram for the air filter is there for the service person, and not for the customer. CONTENTS SAFETY CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indoor Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] YES Isn't any indoor unit which has different refrigerant system connected?NO Correct wiring to regular wiring. (Using miss-wiring check function of the outdoor unit, check them. ) In cooling season, go to A . In heating season, go to B . A Cooling Does cooling indoor fan normally operate?YES Is there clogging of indoor filter or heat exchanger?NO Refrigerant shortage, clogging or pipe breakage is considered. NO Are parts related to the indoor fan motor normal?Fan YES Cleaning NO Repair the defective position. YES Check indoor P. C. board Defective Replace Are connection of connectors and coils normal?YES NO Repair the defective position. YES Is blocking found in entire valve? B Heating Replace PMV with new one. NO NO Is indoor fan system normal?· Fan breakage · Fan coming-off YES Cleaning NO Check outdoor P. C. board Defective Replace NO Does heating outdoor fan normally operate?YES Is there clogging of outdoor heat exchanger?YES Repair the defective position. YES Shortage of refrigerant/blocking/pipe breakage [L10] <Display 1> <Display 2> [Unset model type]: Only when service P board is used . C. ¡ ¡ ¡ ¡ ¡ l ¥ ¥ l l Cut jumper line according to the explanation sheet packaged with the service P board. . C. l l ­ 72 ­ Check code [L29] Outdoor LED display Check and troubleshooting (Item without special mention Indicates part of outdoor unit. ) There is a possibility that it is one of the following errors. Confirm LED on outdoor P board to judge which error it is. Communication error between MCU, Heat sing temp. sensor (TH) error, EEPROM error, Unset model type, Heat sink overheat error, Gas leak detection, 4-way valve inverse error <Display 1> <Display 2> ¡ ¡ ¡ ¡ l ¡ ¥ ¥ ¥ l ¥ ¡ [Heat sink temp. sensor (TH) error] Refer to [F13] column. l [Communication error between MCU] 1. Connection check between CN802 of MCC-1599 and CN504 of MCC-1597 and also connection check between CN505 of MCC-1597 and CN851 of MCC-1596. Check outdoor P board (MCC-1596, MCC-1597, MCC-1599). Defect Replace <Display 1> <Display 2> ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l l ¥ ¥ ¥ ¡ ¥ ¥ ¥ ¥ ¥ ¡ [EEPROM error] Refer to [F31] column. l l <Display 1> <Display 2> l l <Display 1> <Display 2> [Unset model type] Refer to [L10] column. l ¥ ¥ l l l l <Display 1> <Display 2> ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ [Heat sink overheat error] Refer to [P07] column. l ¥ ¥ ¥ ¡ [Gas leak detection] Refer to [P15] column. l l <Display 1> <Display 2> l ¥ ¥ ¥ ¥ ¡ ¥ [4-way valve inverse error] Refer to [P19] column. l <Display 1> <Display 2> l ¥ ¥ ­ 73 ­ l l Check code [P03] Outdoor LED display <Display 1> <Display 2> Check and troubleshooting (Item without special mention Indicates part of outdoor unit. ) [Discharge temp. Is resistance value of TD sensor normal?Sensor error Replace YES Correct and clear the cause. [. . . ] P Board Ass'y, MCC-1597, Fan-IPDU . C. Holder, Sensor, 6-6. 35, 8 P Board Ass'y, MCC-1436 . C. Fuse, 6. 3A, AC250V Bushing Collar Supporter Ass'y Fuse, 25A, 250V Supporter 2244AT8-E 2804AT8-E 1 1 2 1 1 3 2 1 2 1 1 1 1 1 1 1 3 5 5 2 1 4 RAV-SM 2244AT8ZG-E 2804AT8ZG-E 1 1 2 1 1 3 2 1 2 1 1 1 1 1 1 1 3 5 5 2 1 4 2244AT8Z-E 2804AT8Z-E 1 1 2 1 1 3 2 1 2 1 1 1 1 1 1 1 3 5 5 2 1 4 ­ 127 ­ 15-3. Outdoor Unit RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG) 42 4 25, 26, 27 1 44, 45 16, 17 39 38 2 3 22, 23, 24 58, 59 29 28 46 8 53 41 13, 14 11, 12 60 30 7 20, 21 19 35 18 36, 37 10, 49 9, 48 47, 55, 56 15 40 43 31 32 6 51 5, 52 50 61 33, 34, 57 ­ 128 ­ Location No. [. . . ]

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