Watson-Marlow 520Du - Manual (Page 81)

Watson-Marlow 520Du User Manual 81
25.1 Error codes
If an internal error occurs, a flashing error screen is displayed. Note: Signal out of
range, Over signal, No signal and Leak detected error screens report the nature
of an external signal. They do not flash.
Error condition Suggested action
RAM write error
Attempt to reset by switching power OFF / ON. Or seek
support
RAM corruption
Attempt to reset by switching power OFF / ON. Or seek
support
OTP ROM error /
corruption Attempt to reset by switching power OFF / ON. Or seek
support
OTP ROM read
error Attempt to reset by switching power OFF / ON. Or seek
support
Unknown pump
type Check the interface card and cables. Attempt to reset by
switching power OFF / ON. Or seek support
Display failure Seek support
Wrong key-press
Attempt key-press again. Attempt to reset by switching OFF
/ ON
Motor stalled
Stop pump immediately. Check pumphead and tube. Power
OFF/ON may reset. Or seek support
Tacho fault
Stop pump immediately. Power OFF/ON may reset. Or seek
support
Speed error
Stop pump immediately. Power OFF/ON may reset. Or seek
support
Over current
Stop pump immediately. Check system. Power OFF/ON may
reset. Or seek support
Over voltage
Stop pump immediately. Check mains voltage selector
switch. Check supply. Power OFF/ON may reset. Or seek
Under voltage
Stop pump immediately. Check mains voltage selector
switch. Check supply. ON/OFF may reset. Or seek support
Watchdog error
Attempt to reset by switching power OFF / ON. Or seek
support
Over temperature Stop pump immediately. Turn OFF. Seek support
Signal out of
range Check analogue control signal range. Trim signal as
required. Or seek support
Over signal Reduce the analogue control signal
No signal Connect analogue control signal or return to manual control
Leak detected.
Check and reset
Remove the cause of any leak. The STOP key resets
Unrecognised
key-press Attempt key-press again. Attempt to reset by switching
power OFF/ON. Or seek support
Work overload
Turn OFF. Check power supply. Check pumphead and tubing.
Wait 30 minutes. Power ON may reset. Or seek support
Network not
detected
Turn OFF. Check network and connections. Or seek support
RS232 fault Turn OFF. Check network and connections. Or seek support
RS232 lost Turn OFF. Check network and connections. Or seek support
General error
condition
Turn OFF. Seek support