Hitachi RAI-50NH5 - Troubleshooting Module and Thermistor Errors

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Ye s N o
No
Ye s
Ye s
Ye s
No
No
No
LD301 blinks 8 time.
Acceleration defect.
LD301 blinks 7 time.
Thermistor abnormal.
Is the power module normal?
Is the drive circuit normal?
Is the thermistor connector
disconnected?
❈ The problem may be
“forgetting
to connect after servicing
”.
Is the continuity of thermistor normal?
Is the thermistor circuit normal?
Replace the power module.
Replace any defective parts.
Connect the thermistor.
Replace the thermistor.
Replace parts in the
thermistor circuit.
Check continuity of pattern and
lead wires according to the
P.W.B. and schematic diagrams.
Check continuity of pattern and
lead wires according to the
P.W.B. and schematic diagrams.
0274E Pg 97-118(RAI-50NH5) 19/10/05, 3:37 PM105