11.4 High pressure protection device................................................................................................. 448
11.5 Noise filter (NF).......................................................................................................................... 449
11.5.1 Noise filter for IVX Series............................................................................................................ 449
11.5.2 Noise filter for ES Series............................................................................................................. 450
11.6 Capacitor (CB1, CB2)................................................................................................................. 452
11.7 Reactor (DCL)............................................................................................................................ 453
11.7.1 Reactor (DCL) for IVX Series ..................................................................................................... 453
11.7.2 Reactor (DCL) for ES Series ...................................................................................................... 453
11.8 Scroll compressor....................................................................................................................... 455
11.8.1 Reliable mechanism for low vibrating and low sound................................................................. 455
11.8.2 Principle of compression............................................................................................................. 455
12 Maintenace notes............................................................................................. 457
12.1 Checking the power source and the wiring connection.............................................................. 458
12.2 Burnt-out compressor due to an insufficient refrigerant charge................................................. 459
12.3 Insufficient cooling performance when a long piping is applied................................................. 460
12.4 Abnormally high operation sound (in the ceiling type indoor unit).............................................. 461
12.5 Alarm code "31".......................................................................................................................... 462
12.6 Not cooling well due to insufficient installation space for the outdoor unit................................. 463
12.7 Caution with the refrigerant leakage........................................................................................... 464
12.7.1 Maximum permissible concentration of the HCFC gas............................................................... 464
12.7.2 Calculation of the refrigerant concentration................................................................................ 464
12.7.3 Countermeasure for the refrigerant leakage according to the KHK standard............................. 464
12.8 Maintenance work...................................................................................................................... 465
12.9 Service and maintenance record................................................................................................ 466
12.10 Service and maintenance record using the 7-segment display.................................................. 468
12.11 Service and maintenance record by remote control switch........................................................ 470
12.12 Pump-down method for replacing the compressor..................................................................... 472
Index
vi
SMGB0060 rev. 1- 12/2010
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