Honeywell HVAC400x Applications Manual page 165

Fault code Fault ID Fault name
39 380 Device removed
40 390 Device unknown
41 400 IGBT temperature
Device changed (different
44 430
type)
Device added (different
45 440
type)
50 1050 AI low fault
51 1051 External fault
1052
Keypad communication
52
fault
1352
Fieldbus communication
53 1053
fault
1354 Slot A fault
1454 Slot B fault
54 1554 Slot C fault
1654 Slot D fault
1754 Slot E fault
continued: Fault codes
Possible cause
An option board was removed
from the slot.
An unknown device was
connected (the power unit /
option board).
The calculated IGBT temperature
(unit temperature + I2T) is too
high.
The option board was replaced
by a new one that you have not
used before in the same slot. No
parameter settings are saved.
There is a new option board of a
different type. No parameters are
available in the settings.
One or more of the available
analog input signals is below
50% of the minimum signal
range. A control cable is
defective or loose. A malfunction
in a signal source.
The digital input signal that is set
with parameter P3.5.1.7 or
P3.5.1.8 was activated.
The connection between the
control panel and the drive is
defective.
The data connection between the
fieldbus master and the fieldbus
board is defective.
Fault A defective option board or
slot.
165
HVAC400X – APPLICATION MANUAL
Remedy
The device is not available. Reset the
fault.
The device is not available.
Check the loading.
Check the motor size.
Set the power unit parameters again.
Set the power unit parameters again.
Replace the defective parts.
Check the analog input circuit.
Make sure that parameter AI1 Signal
Range is set correctly.
Check the input signal.
Check the control panel connection and
the control panel cable.
Check the installation and fieldbus
master.
Check the board and the slot.
EN2B-0417GE51 R0719