Toshiba HFC-R407C free download

File name Toshiba Air Conditioner MM Service Manual complete.pdf

A90-0130 Modular Multi System Service Manual Air Conditioner ­ Multi Split Type System HFC R407C Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Outline of MMS (Modular Multi System) . . . . . . . . . . . . . . . . . . . 8 Parts Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Construction Views ­ Outdoor Units . . . . . . . . . . . . . . . . . . . . . . 14 Construction Views ­ Indoor Units . . . . . . . . . . . . . . . . . . . . . . . . 15 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Refrigerant Piping Systematic Drawings . . . . . . . . . . . . . . . . . . 25 Combined Refrigerant Piping Systematic Drawings . . . . . . . . 28 Refrigerant Cycle Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Outline of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Self Diagnostic Display Information . . . . . . . . . . . . . . . . . . . . . . 46 Control Circuit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Backup Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Forced Function of Oil Level Detection . . . . . . . . . . . . . . . . . . . 105 Refrigerant Pipe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Trial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Exploded Views and Service Parts. . . . . . . . . . . . . . . . . . . . . . . 124 Additional Literature and Contacts . . . . . . . . . . . . . . . . . . . . . . 134 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 3 Introduction Precautions 1 Read these Safety Notes carefully before installing this unit. These Safety Notes contain very important safety information. Always be sure to observe these cautions. After installation is complete, trial the operation of the unit to make sure that it is operating normally. Instruct the customer about how to operate the unit, and about necessary maintenance. The dealer or a special contractor must install this unit. Attempts to install this unit by a customer could result in leaks, electric shock, or fire. Improper installation could result in leaks, electric shock, or fire. If this unit is installed in a small room, measures must be taken to ensure that, even in the event of a refrigerant leak, the maximum safe limit for refrigerant concentration levels in the air is not exceeded. Consult the dealer for details on what measures can be taken to keep from exceeding the maximum safe limit. If a refrigerant leak does cause refrigerant concentration levels in the air to exceed the maximum safe limit, asphyxiation could result.