STP SERIES Install, Operation, and Maintenance Manual
SECTION 3: OPERATION AND CONTROLS
Page
28
of
97
Diversified Heat Transfer, Inc.
•
439 Main Road
•
Towaco, New Jersey 07082
Rev-1
09/11/2019 PHONE: 800-221-1522
•
WEBSITE: www.dhtnet.com
STP Manual
WARNING!
The pump should never be installed in unauthorized positions which can cause damage.
CAUTION!
Electrical power wiring must be in accordance with all local, state, and national codes that apply.
WARNING!
Misconnection or overload of electrical or signal connections could cause pump to shut down
or cause permanent damage. Carefully follow all installation and operations instructions in
pump manufacturer’s instruction sheet.
CAUTION!
Do not operate the pumps without water! Do not turn on power before filling with water! Failure
to do so can cause damage to the pump.
WARNING!
Hazardous voltages are present within the enclosure. Installation or service should be carried
out only by trained personnel.
3.6.4 Controller Status LED Indication and Error Codes
LED Status monitors Pump On (solid green) for normal operation and Standby (flashing green).
The pump Status LED will flash red during errors and overload conditions. The sequence of the
flash is determined by the type of error as shown in following table:
Error Codes
Blinks in 1/2
second intervals
Description
Probable Cause(s)
1 blink
Locked Rotor
Impeller is unable to turn
–
debris in system
2 blinks
Over Current
High Motor Load
3 blinks
Over Temperature
Motor might be faulty or viscous medium is present. High
Motor Load, Water Temperature too hot, Pump running
dry.
4 blinks
Over Voltage
Line voltage is too high.
5 blinks
Under Voltage
Line voltage is too low for proper operation.
6 blinks
Communication Fault
7 blinks
Motor Temperature Fault Control temperature near maximum limit.
Control reduces rpm to reduce heat.
8 blinks
Staging Fault
The LED will typically assume only the conditions in this table.
