Honeywell NX Series Pocket Programming Manual page 19

Fault Fault Possible Cause
Code
17 Motor under load Motor underload protection has tripped.
22 EEPROM Parameter save fault:
checksum fault
- Faulty operation.
- Component failure.
24 Counter fault Values displayed on counters are
incorrect.
25 Microprocessor - Faulty operation.
watchdog fault
- Component failure.
29 Thermistor fault The thermistor input has detected
increase of the motor temperature.
32 Fan cooling Cooling fan of the inverter does not start,
when ON command is given.
34 Internal bus Ambient interference of defective
communication hardware.
35 Application fault Selected application does not function.
39 Device removed Option board removed. Drive removed.
40 Device unknown Unknown option board or drive.
41 IGBT temperature IGBT Inverter Bridge overtemperature
protection has detected to high a motor
current.
44 Device change Option board changed. Option board has
default settings.
45 Device added Option board added.
50 Analogue input I Current at the analogue input is < 4 mA.
in
< 4 mA (selected
- Control cable is broken or loose.
signal range 4 to
- Signal source has failed.
20 mA)
51 External fault Digital input fault. Digital input has been
programmed as external fault input and
this input is active.
52 Keypad The connection between the control
communication keypad and the frequency converter is
fault broken.
53 Fieldbus fault The data connection between the
fieldbus Master and the fieldbus board is
broken.
54 Slot fault Defective option board or slot.
55 Actual value Actual value has exceeded or fallen
supervision below the actual value supervision limit.
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Correcting measures
FAN: check that belt is not broken.
PUMP: check that pump is not dry.
Contact the technical support.
Contact the technical support.
Reset the fault and restart. Should the
fault recur, contact the technical
support.
Check motor cooling and loading.
Check thermistor connection.
(If thermistor input is not in use, it has
to be short circuited.)
Contact the technical support.
Should the fault recur, contact the
technical support.
Contact the technical support.
Reset.
Contact the technical support.
Check loading.
Check motor size.
Reset.
Reset.
Check the current loop circuitry.
Check the programming and the device
indicated by the external fault
information. Check also the cabling of
this device.
Check keypad connection and possible
keypad cable.
Check installation.
If installation is correct, contact the
technical support.
Check board and slot.
Contact the technical support.
Check the process.
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