Hitachi SAMURAI Series Service Manual page 132

4. Troubleshooting
Troubleshooting by alarm code
C1-h1
Alarm code
Alarm stop reason
Discharge pressure (Pd) becomes higher than 1.92MPa for more than 10 seconds. (Enabled for electronic control)
N O T E
Causes alarm stop with 3 occurrences in 30 minutes. Retry control is performed until the second one. (Compressor
stops, and restarts automatically after 3 minutes)
Retry indication
LCD: By touching "Inspection", "Pd Retry" is shown in "No.1 Cycle".
Retry code
C1-P2
PCB monitoring position
PCBd (I/O PCB) CN31PD (Discharge pressure sensor)
C1-1
Alarm code
Alarm stop reason
Suction pressure (Ps) becomes lower than 0.01MPa for more than 3 seconds. (Enabled for electronic control, cooling ·
heating)Alternatively, interruption of PCN205 short line.
PCB monitoring position
PCBd (I/O PCB) CN32PS (Suction pressure sensor), PCN205 (Short line)
124
SMGB0082 rev.1 - 07/2015
Discharge pressure over-increase
Low pressure interruption device