Hitachi RAS-(4-12)HNP(1)(E) - Protection Control Code on 7-Segment Display

8 Troubleshooting
298
SMGB0087 rev.0 - 12/2013
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Protection control code on 7-segment display
1 Protection control code is displayed on 7-segment when a protection control is activated.
2 Protection control code is displayed while function is working, and goes out when released.
3 When several protection control are activated, code number with higher priority will be indicated (see below for the
priority order).
a. Higher priority is given to protection control related to frequency control than the other. Priority order:
 High-pressure increase protection
 Over current protection
 Cold draft protection
b. In relation to retry control, the latest retrial will be indicated unless a protection control related to frequency control
is indicated.
RAS-(2-2.5)HVNP1 / RAS-3HVNC1
Priority Protection control Code
1 Low-Pressure Ratio Control at Cooling Operation
p00
2 High-pressure ratio control at heating operation
p01
3 High-pressure rise protection
p02
4 Current protection
p03
5 Inverter n temperature rise prevention
P04
6 Discharge gas temperature rise protection
p05
7 Unbalance Power Source Detecting
p09
8 Demand current control
p0A
9 Low-Pressure Decrease Protection
p0b
RAS-(3-12)H(V)N(P/C)(1)(E)
Priority Protection control Code
1 Pressure ratio control
p01
2 High-pressure rise protection
p02
3 Current protection
p03
4 Inverter n temperature rise prevention
P04
5 Discharge gas temperature rise protection
p05
6 Demand current control (running current limit control)
p0A
7 High pressure decrease protection (only Premium series)
p09
N O T E
The protection control code being indicated on 7-segment display is changed to an alarm code when the abnormal opera-
tion occurs. Also, the same alarm code is indicated on the remote control switch.