STP-H803/H1303 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*".
10.8
Abnormality/Error in the TMS Unit (for Use with the TMS Unit)
1) Abnormality/Error in the TMS Unit
i If the temperature of the STP pump base unit is +10
°
C higher or -10
°
C
lower than the setting value due to the occurrence of an
abnormality/error in the TMS heater or other causes, the STP pump
decelerates and stops.
Output of the heater and the cooling water unit is OFF.
The "FAILURE" lamp lights and the LCD displays error message "TMS
Higher Temp." (over +10
°
C) or "TMS Lower Temp. " (below -10
°
C).
T
ro
ub
le
sh
oo
tin
g
◇
An abnormality/error is not detected even at -10
°
C or less lower than
the setting value within approx. one hour after the STP pump starts.
ii If an abnormality/error shown in "i" above is not detected and the TMS
heater overheats, the STP pump decelerates and stops.
Output of the heater and the cooling water unit is OFF.
The "FAILURE" lamp lights and the LCD displays error message "TMS
Overheat".
10-4
