Flint & Walling Commander Pro 75 User Manual
Page 9
9
95 North Oak Street • Kendallville, IN 46755
Copyright 2012. All Rights Reserved.
SYSTEM TROUBLESHOOTING
The built-in diagnostics will protect the system against an application or system problem. The red “FAULT” light on
the front of the CP WATER SubDrive controller will flash a given number of times to indicate the nature of the fault. In
some cases the system will shut itself off until corrective action has been taken. Fault codes and the recommended
corrective action for each are listed in the following table.
# of Flashes
Fault
Possible Cause
Corrective Action
1
Motor under
load
Over pumped or dry well. Worn
pump. Broken motor shaft.
Blocked pump or screen.
Wait for well to recover and automatically reset timer to
time out. If the problem does not correct, check motor
and pump. See description on “Smart Reset” at the end
of this document.
2
Under voltage Low line voltage.
Check the loose connection. Check the line voltage.
Report low voltage to power company. Unit will start
automatically when proper line voltage will restore.
See “Extended Input Voltage Range” at the end of this
document.
3
Locked pump
Motor/pump is misaligned. Abra-
sive/sand bound pump.
Unit will attempt to free a locked pump. If unsuccessful,
check the motor and pump.
4
Not used
5
Open circuit
Loose connection, defective mo-
tor or cable.
Check motor wiring. Make certain all connections are
tight. Make certain proper motor is installed. Cycle input
power * to reset.
6
Short circuit
Defective cable, splice or motor.
Check motor wiring. Cycle input power * to reset.
7
Overheated
controller
High ambient temperature. Direct
sunlight. Obstruction of airflow.
This fault automatically resets when the temperature
returns to safe level.
* Cycle input power means, turn the power off and until both lights fade off and apply power again.
TROUBLESHOOTING GUIDE
Symptom
Possible Cause
Corrective Action
Water flow rate is not as
high as expected
Motor is running backwards
Switch two of the three wires leading from the
controller to the motor (3-phase motor)
Temperature in the controller is too high. If
the controller’s heat exchanger becomes too
hot, the controller will reduce the speed of
the pump to lower the pump consumption.
Make sure there is at least six inches of room
around the controller for movement of air.
Pump capacity cannot supply demand.
Use pump with higher flow rating (if head re-
quirement is still satisfied).
Lower input line voltage.
Check the loose connection. Check the line volt-
age. Report low voltage to power company.
Excessive pressure
fluctuations
Waterlogged tank
Check tank for bladder damage-replace if neces-
sary.
Reset the tank -pre charge. (Should be 70% of
pressure sensor setting.
Pressure tank is too small for flow rating of
the pump.
Use larger tank (8 gal tank minimum).
Motor runs continuous-
ly with no flow demand
from the house
Leak in pitless adapter.
Re-seat the pitless adapter.
Leak in the household plumbing or outdoor
plumbing.
Check for leaky faucets and pipe fittings and
repair.