Hitachi RAS-(4-12)HNP(1)(E) - Maintenance Notes

12 Maintenance notes
471
SMGB0087 rev.0 - 12/2013
12
Index
12.1. General notes ......................................................................................................................................472
12.1.1. Checking the power source and the wiring connection ........................................................................... 472
12.1.2. Burnt-out compressor due to an insufcient refrigerant charge ............................................................... 472
12.1.3. Insufcient cooling performance when a long piping is applied ............................................................... 473
12.1.4. Abnormally high operation sound (in the ceiling type indoor unit) ........................................................... 473
12.1.5. Alarm code “03” ....................................................................................................................................... 474
12.1.6. Not cooling well due to insufcient installation space for the outdoor unit ............................................... 474
12.2. Maintenance work ...............................................................................................................................475
12.3. Service and maintenance record.........................................................................................................476
12.4. Service and maintenance record using the 7-segment display ...........................................................477
12.5. Service and maintenance record by remote control switch .................................................................479
12.6. Pump-down method for replacing the compressor..............................................................................480
1 2 . M ai n t en a n ce n ot e s