
STP-603/1003 Series Instruction Manual
10.6
Overheating Inside the STP Control Unit
When the temperature inside the STP control unit overheats due to a failure in
the air cooling fan, external heat source, and other, the WARNING message
"CAUTION: CNT heat*" is displayed. In this case, the STP pump does not stop.
If the STP control unit overheats further, the STP pump decelerates and stops.
The "FAILURE" lamp lights and the LCD displays error message
"CNT Overheat".
10.7 Overspeed
When the rotational speed of the STP pump exceeds the specified rotational
value due to a failure in the motor driver, the breaker in the STP control unit
switches "OFF." The STP pump has no power supplied and stops.
The "FAILURE" lamp lights and the LCD displays error message
"OVERSPEED*".
Troubleshooting
Troubleshooting
10-4