Armstrong 4300 - Page 32

installation &
operating instructions
Design Envelope 4300 and 4380 vertical in-line
pumping unit with integrated controls
32
Pump won’t
Start
Is led
302 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 to t6?
Is the Link
made on x101
t3 - t6?
Is a start
signal applied
to x101 T4?
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
Local Stop - A
keypad is
reqired to
start the unit
There is a fault
- use a keypad
to diagnose
Contact
Armstrong Service
Department
Is led
301 flashing
slowly?
Is red led
300 lit?
Yes
Is the reference
signal on x101 t2
>0vdc?
fault finding chart - no keypad available