STP-301/451 Series Instruction Manual
11-5
Troubleshooting
11.2.2 Displaying Past Abnormalities/Errors and Accumulated Running-Time
(This function is available with the STP pump of "Ver. 2.20" and after. How to check
the version is shown on the next page.)
The STP pump provides a function that the LCD displays a maximum of eight error
messages that occurred in the past, and a total of running-time in hours (acceleration, rated
speed operation, and deceleration).
<How to display error messages>
1) Press and hold the "SELECT" switch for approx. 3 seconds or more when the LCD
displays a pump's state message. The LCD displays the accumulated running time and
then error messages that occurred in the past (error record display mode).
The number displayed at the right of the error message is an error sequence number.
The smaller number indicates that the error occurred more recently.
2) To return to the previous pump's state message, press and hold the "SELECT" switch
again for approx. 3 seconds or more, or leave the error message displayed for approx. 20
seconds without pressing the "SELECT" switch.
< LCD Message >
POWER FAILURE 1
RUN : 1,500 hrs
LEVITATION
LEVITATION
PUMP OVERTEMP 2
Press SELECT switch for
approx. 3 sec. or leave the
message displayed for approx.
20 sec.
Pump’s state display mode
Error record display
Pump’s state display mode
Operating time display
SELECT Switch
SELECT Switch
Press SELECT switch for
about 3 sec.
POWER FAILURE 1
RUN : 1,500 hrs
PUMP OVERTEMP 8
SELECT Switch
SELECT Switch
Changing display in error
record display mode
Switching display between state
message and error record message
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