Hitachi RAS-3HVRNME-AF, Installation And Operation Manual, Page: 39 / 40

39
PMML0205A rev.4 - 11/2012
ENGLISH
Alarm
Code
Retry Stop
Code
Origin Detail of Abnormality Main Factors
101
-
2nd
cycle
Activation of high pressure switch The high pressure (Pd) is higher than 3 MPa.
102 P-12
2nd
cycle
Activation of protection control for excessively high
pressure
The high pressure (Pd) is higher than 2.78 MPa during
10 seconds.
103
-
2nd
cycle
Activation of protection control for excessively low
pressure
The suction pressure (Ps) is lower than 0.15 MPa during
1.5 minutes.
104
-
2nd
cycle
Activation of low pressure control
The suction pressure (Ps) is lower than 0.1 MPa during
3 seconds.
105 P-11
2nd
cycle
Excessively low pressure difference
The pressure ratio calculated from high pressure (Pd)
and low pressure (Ps) is lower than 1.8 MPa during 3
minutes.
106
-
2nd
cycle
Excessively high discharge gas temperature
The discharge gas temperature is increased to 120 ºC
during 10 minutes or is higher than 140 ºC at least 5
seconds.
124 -
2nd
cycle
Failure of refrigerant liquid temperature thermistor
The refrigerant liquid temperature thermistor is short-
circuited or cut.
125 -
2nd
cycle
Failure of ambient temperature thermistor
The ambient temperature thermistor is short-circuited or
cut.
126 -
2nd
cycle
Failure of discharge gas temperature thermistor
The discharge gas temperature thermistor is short-
circuited or cut.
127 -
2nd
cycle
Failure of refrigerant evaporation temperature ther-
mistor
The refrigerant evaporation temperature thermistor is
short-circuited or cut.
128 -
2nd
cycle
Failure of suction gas temperature thermistor
The suction gas temperature thermistor is short-circuited
or cut.
129 -
2nd
cycle
Failure of discharge gas pressure sensor The high pressure sensor is short-circuited or cut.
130 -
2nd
cycle
Failure of suction gas pressure sensor The low pressure sensor is short-circuited or cut.
132 -
2nd
cycle
Abnormal transmission between Inverter PCB and
Main PCB
The communication between Main PCB (PCB1) and In-
verter (DIP - IPM/ISPM) is not performed correctly during
30 seconds.
134 -
2nd
cycle
Abnormality of Power Supply Phase
The power source phases are reversely connected or
one phase is not connected.
135 -
2nd
cycle
Incorrect PCB Setting Wrong settings are performed in DIP switches on PCB.
136 -
2nd
cycle
Incorrect operation
Wrong settings are performed in DIP switch on PCB or
prohibited operation is performed.
151 P-18
2nd
cycle
Excessively low voltage or excessively high voltage
for the inverter
The voltage between terminal “P” and “N” of ISPM is
insufficient.
152 P-17
2nd
cycle
Abnormal operation of the current sensor
The compressor frequency is maintained at 15 - 18 Hz
after the compressor’s start up, one of the absolute va-
lues of the running current at each phase U+, U-, V+ and
V- is lower than 1.5 A.
153 P-17
2nd
cycle
Activation of protection for inverter instantaneous
over current
The compressor current is higher than the set value.
154 P-17
2nd
cycle
Transistor module protection activation
The transistor module detects an abnormality 3 times in
30 minutes.
155 P-17
2nd
cycle
Increase in the inverter fin temperature
The temperature of the thermistor for inverter fin exceeds
100 ºC.
TROUBLESHOOTING