Rectify interference
6 720 643 196
(2010/02)
23
2.5
Alarm from driver circuit board
Alarm from driver circuit board
Code
Alarm text
Check points
NAK 0-0
Stoppage due to overheated heat sink.
B
Check whether the fan runs.
B
Check for contact paste between the heat sink
and electronics.
NAK 0-1
Stoppage due to overcurrent at start.
B
Check whether the inverter circuit board is defec-
tive.
B
Check whether the compressor is defective.
B
Check whether the initiation data is incorrect.
NAK 0-2
Stoppage due to overcurrent.
B
Check whether the inverter circuit board is defec-
tive.
B
Check whether the compressor is defective.
B
Check whether the initiation data is incorrect.
NAK 0-3
Stoppage due to overvoltage (DC). The com-
pressor increases too quickly.
B
Check the supply (15V DC).
NAK 0-4
Current sensor warning.
Current sensor defective.
B
Replace inverter circuit board.
NAK 0-5
Thermistor tripped on inverter circuit board.
Faulty sensor in power transistor.
B
Replace inverter circuit board.
NAK 0-6
Current sensor tripped.
Current sensor defective.
B
Replace inverter circuit board.
NAK 0-7
Data not received.
B
Check the 15-supply to the inverter circuit board,
13-18V on terminal block 5-7.
NAK 0-8
Stoppage due to undervoltage DC.
B
Check the supply (15V DC).
B
Check the condensers.
Tab. 21
Summary of Contents for X Series
Page 1: ...Fault tracing tree X11 X15 6 720 619 265 18 1I 6 720 643 196 2010 02 ...
Page 26: ...6 720 643 196 2010 02 26 Notes ...
Page 27: ...6 720 643 196 2010 02 27 ...
Page 28: ......