Hitachi YUTAKI S80 Series - Page 155

13. Troubleshooting
TCGB0075 rev.0 - 11/2012
155
13
LCD dis-
play
7 segment
display
Origin Detail of abnormality Main factors
135 30
2nd cycle Incorrect PCB Setting
Wrong settings are performed in DIP switches
on PCB.
136 40
2nd cycle Incorrect operation
Wrong settings are performed in DIP switch on
PCB or prohibited operation is performed.
151 06
2nd cycle
Excessively low voltage or excessively high
voltage for the inverter
The voltage between terminal “P” and “N” of
ISPM is insufcient.
152 51
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 values of the running current
at each phase U+, U-, V+ and V- is lower than
1.5 A.
153 52
2nd cycle
Activation of protection for inverter instanta-
neous over current
The compressor current is higher than the set
value.
154 53
2nd cycle Transistor module protection activation
The transistor module detects an abnormality 3
times in 30 minutes.
155 54
2nd cycle Increase in the inverter n temperature
The temperature of the thermistor for inverter
n exceeds 100 ºC.