Hitachi RAS-2-HVNP Service Manual page 209

8. Troubleshooting
02
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.
- This alarm is indicated when one of safety devices is activated during compressor running.
Model
RAS-(2-2.5)HVNP
RAS-3HVNC
RAS-(4-6)H(V)NCE Faulty PCB (IPM)
Other than above See next diagram
RAS-3HVNPE / RAS-(4-6)H(V)NPE / RAS-(8-12)HN(P/C)(E)
195
SMGB0079 rev.0 - 01/2013
Activation of the safety device (high pressure switch) in the outdoor unit
Cause
Faulty PCB
(Except Alarm codes 41 and 42)
(*)
Model PCB connector
RAS-(2-2.5)HVNP
PCN401 (PCB1)
RAS-3HVNC
RAS-(4-6)H(V)NCE CN401 (PCB)
Other than above PCN8 (PCB1)
Pin
#1-#3
#1-#2
#1-#3
8