Armstrong 4300 - Fault Finding Charts

installation &
operating instructions
Design Envelope 4300 and 4380 vertical in-line
pumping unit with integrated controls
31
Pump won’t
Start
Is the Keypad
display and
on led lit?
no
no no
no
no
no
no
no
no - bms
yes
yes
yesyes
yesyes
yes
yes
Check 3 phase
mains supply
Connect x101
t3 to t6
Connect x101
t3 to t6
Is the
pump being used
in Sensorless
Mode?
Is the Link
made on x101
t3 - t6?
Is the Link
made on x101
t3 to t6?
Is a start
signal applied
to x101 t4?
Check remote
start signal or
link x101
t4 to t6
Check remote
start signal or
link x101
t4 to t6
Check remote
reference
signal from
bms
Press the Key
pad start key
See the alarm
descriptions on
page 17/18
Contact
Armstrong Service
Department
Does the
display show
an alarm?
Has the keypad
stop key been
pressed?
Yes-
Display
Flashing
Is a start
signal applied
to x101 t4?
Is the reference
signal on x101 t2
>0vdc?
fault finding chart - keypad available