Follow the instructions in "Pumphead Replacement (qdos 20, 60, 120 and CWT)" on
page 139.
If the message constantly repeats after several pumphead installations, then there may be
a leak detection sensor failure. Please contact Watson-Marlow for repair.
26.3
Error codes
Note:
For qdos Remote refer to "Error Indication (Remote only)" on the next page
If an internal error occurs, an error screen with a red background is displayed.
Note:
Signal out of range
and
Leak detected
error screens report the nature of an external
condition. They do not flash.
Table 35 - Error codes
Error
code
Error condition
Suggested action
Er 0
FRAM write error
Attempt to reset by switching power OFF / ON. Or seek
support
Er 1
FRAM corruption
Attempt to reset by switching power OFF / ON. Or seek
support
Er 2
FLASH write error during drive
update
Attempt to reset by switching power OFF / ON. Or seek
support
Er 3
FLASH corruption
Attempt to reset by switching power OFF / ON. Or seek
support
Er 4
FRAM shadow error
Attempt to reset by switching power OFF / ON. Or seek
support
Er 9
Motor stalled
Stop pump immediately. Check pumphead and tube.
Power OFF / ON may reset. Or seek support
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