Hitachi RAS-5HVRNM1E Service Manual page 268

8 Troubleshooting
42
Alarm code
• The RUN LED flickers and "ALARM" is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section. The unit
number and the alarm code are displayed on the display of the outdoor unit PCB.
– Abnormality indication will appear when the protection device is activated during compressor operation at heating
(see Note), with the outdoor unit evaporation temperature higher than 55 °C and the compressor-top temperature
higher than 95 °C.
RAS-(2-3)HVRN(1)(E)(S)
RAS-(4-6)HVRNS1E
260
SMGB0060 rev. 1- 12/2010
Heating Overload (High pressure switch will be activated) for ES Series