Hitachi RAS-25CNH1 - Page 99

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NO
NO
NO
YES
YES
YES
LD301: Blinks 6 times.
OH thermistor temperature rises
LD301: Blinks 5 times.
Overload lower limit cut
LD301: Blinks 4 times.
Switching failure
LD301: Blinks 3 times.
Abnormally low rotation speed
Is the thermistor circuit normal?
Leakage of refrigerant or
compressor defective.
Replace the control P.W.B.
Is the power module normal?
Are position detection circuit and
drive circuit PS-HIC normal?
Replace parts in the thermistor
circuit.
Replace defective parts.
Check the continuity of replaced
parts.
Replace the power module.
Replace defective parts.
Perform continuity check of the
leads and pattern according to the
P.W.B. diagram and circuit dia-
gram.