ABB ACQ580 Firmware Manual page 354

350 Fault tracing
Code
Warning / Aux. code
(hex)
D510 Inlet minimum
pressure
Programmable warning:
82.40 Inlet minimum
pressure protection
Cause
Measured inlet pressure is
below the defined warning
level.
What to do
Check the pump inlet for blockages or
closed valve.
Check the configuration of inlet
pressure protection.
See parameters 82.40 Inlet minimum
pressure protection and
minimum pressure warning
82.41 Inlet
level.