Hitachi RAS-18YH4 - Page 88

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LD301 blinks 2 times.
Peak current-cut.
Is the intelligent power module (IPM) normal?
Replace the intelligent power module (the control P.W
.B.).
LD301 blinks 1 time. Reset stop.
However, the unit always r
esets and
stops just after power is supplied:
this does not indicate a fault.
Is the reset circuit normal?
Normally, pin 7 of CN18 is approx. 5V.
Replace the control P.W
.B.
Make sure again that connectors are connected securely.
Perform final operation check.
Yes
Yes
Yes
No
No