Honeywell NXL - Manual (Page 90)

90(96) Fault tracing Honeywell Honeywell Honeywell Honeywell
9
17 Motor
underload/
Pump Dry
detection/
Broken belt
Detection Motor underload protection has tripped. FAN: check that Belt is not broken
PUMP: check that Pump is not dry
22
EEPROM
checksum fault Parameter save fault
−
faulty operation
− component failure
Contact the distributor near to you
24 Counter fault Values displayed on counters are
incorrect
25 Microprocessor
watchdog fault
− faulty operation
−
component failure
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
29 Thermistor fault The thermistor input of option board has
detected increase of the motor
temperature Check motor cooling and loading
Check thermistor connection
(If thermistor input of the option board is
not in use it has to be short circuited)
34 Internal bus
communication Ambient interference or defective
hardware Should the fault re-occur, contact the
distributor near to you.
35 Application fault Selected application does not function. Contact the distributor near to you.
39 Device removed Option board removed.
Drive removed. Reset
40 Device unknown Unknown option board or drive. Contact the distributor near to you.
41 IGBT temperature IGBT Inverter Bridge overtemperature
protection has detected too high a motor
current. Check loading.
Check motor size.
44 Device change Option board changed.
Option board has default settings. Reset
45 Device added Option board added. Reset
50 Analogue input
I
in
< 4mA
(selected signal
range 4 to 20
mA)
Current at the analogue input is < 4mA.
−
control cable is broken or loose
− signal source has failed
Check the current loop circuitry.
51 External fault Digital input fault. Digital input has been
programmed as external fault input and
this input is active. Check the programming and the device
indicated by the external fault
information. Check also the cabling of
this device.
52 Keypad
communication
fault The connection between the control
keypad and the frequency converter is
broken. Check keypad connection and possible
keypad cable.