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11. Fault finding
Table 25 Fault finding
Symptom
The controller LEDs do not flash for 0.5 seconds when system switched on
The pump does not rotate after a parallel start command is supplied
The pump does not rotate after a serial start command is sent
The controller LEDs do not flash for 0.5 seconds when system switched on
The electrical supply has failed.
Ensure that the electrical supply is switched on and the fuses (and current limiting
devices) have not been tripped.
Cause
The pump rotor is spinning.
Remedy
The LEDs may not flash if the pump is rotating.
Fault
The pump does not rotate after a parallel start command is supplied
Cause
Check that the electricity supply is on and whether the fail output is active.
Remedy
If there is a fail signal, check whether the red alarm LED is flashing. If it is, refer to
Flashing error codes
rotor still does not rotate then there is a fault with the pump.
Fault
The pump does not rotate after a serial start command is sent
Cause
Check whether the pump returns a reply to the start command.
Remedy
If there is no reply then perform the checks given under
98 otherwise perform the checks under
start command is sent
B8J200880_D
300812671_002_C3
B8J200880_D - Fault finding
on page 100. If power is supplied, there is no fail signal and the
on page 96.
Page 96
on page 96
on page 96
The pump does not rotate after a serial
on page 96
No serial comms
on page
08/2021 - ©Edwards Limited
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