24
States
Possible causes
Check items
Solutions
No home sen-
sor signal
Faulty wiring
If the signal and power lines are
connected in place? See page 15.
•
Correct wiring and resume opera-
tion.
Home sensor failure Use a tester to check the voltage
between GND and signal output
terminals. The result should be:
0V at sensor "ON"
Power voltage at sensor "OFF"
•
Replace as necessary*
No pressure
sensor signal
Faulty wiring
If the signal and power lines are
connected in place? See page 15.
•
Correct wiring and resume opera-
tion.
Pressure sensor fail-
ure
Use a tester to check the voltage
between GND and signal output
terminals. The result should be:
1V when pump is stopped
Above 1V when pump is running
•
Replace as necessary*
No encoder
signal
Faulty wiring
If the signal and power lines are
connected in place? See page 15.
•
Correct wiring and resume opera-
tion.
Encoder failure
A counter does not work.
• Replace as necessary*
*
Solutions marked with * are conducted by us.
Inspection
Perform daily inspection to keep pump performance and safety.
Daily inspection
Check for a leak or any other abnormality during operation. If you notice any abnormal condition, suspend
operation immediately and inspect/solve problems according to "Troubleshooting".
Inspection
