Hitachi RAS-20CNHZ2 - Page 90

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LD301 blinks 6 times.
OH thermistor temperature
rises.
LD301 blinks 5 times.
Over-load lower limit cut.
LD301 blinks 4 times.
Switching Failure.
LD301 blinks 3 times.
Abnormal low speed.
Is thermistor circuit normal?
Is system power module
(SPM2) normal?
Replace main P.W.B.
Is system power module
normal? (SPM2)
Replace thermistor circuit
parts.
Replace system power
module? (SPM2)
Replace system power
module. (SPM2)
No
No
No
Looking at P.W.B. diagram and
circuit diagram, perform continuity
check of pattern and lead wire.
Yes
Yes
No
No
No
Yes
Yes
Yes
Is drive circuit normal?
Replace defective parts.