Franklin 2007 manual Subtrol-Plus Obsolete See SubMonitor, Green Off Time

Maintenance – Electronic Products

Subtrol-Plus (Obsolete - See SubMonitor)

Subtrol-Plus - Troubleshooting After Installation

SYMPTOM

POSSIBLE CAUSE OR SOLUTION

	When the Subtrol-Plus reset button is depressed and released, all indicator lights should fl ash. If line voltage is
Subtrol-Plus Dead	correct at the Subtrol-Plus L1, L2, L3 terminals and the reset button does not cause lights to fl ash, Subtrol-Plus
	receiver is malfunctioning.
	The green light will fl ash and not allow operation unless both sensor coils are plugged into the receiver. If both are
Green Off Time	properly connected and it still fl ashes, the sensor coil or the receiver is faulty. An Ohmmeter check between the two
Light Flashes	center terminals of each sensor coil connected should read less than 1 ohm, or coil is faulty. If both coils check good,
	receiver is faulty.
Green Off Time	The green light is on and the Subtrol-Plus requires the specifi ed off time before the pump can be restarted after
	having been turned off. If the green light is on except as described, the receiver is faulty. Note that a power
Light On
	interruption when the motor is running will initiate the delay function.
	This is a normal protective function which turns off the pump when the motor reaches maximum safe temperatures.
	Check that amps are within the nameplate maximum on all three lines, and that the motor has proper water fl ow past
Overheat Light On	it. If overheat trip occurs without apparent motor overheating, it may be the result of an arcing connection somewhere
	in the circuit or extreme noise interference on the power lines. Check with the power company or Franklin Electric.
	A true motor overheat trip will require at least fi ve minutes for a motor started cold. If trips do not conform to this
	characteristic, suspect arcing connections, power line noise, ground fault, or SCR variable speed control equipment.
	This is a normal protective function, protecting against an overload or locked pump. Check the amps in all lines
	through a complete pumping cycle, and monitor whether low or unbalanced voltage may be causing high amps at
Overload Light On	particular times. If overload trip occurs without high amps, it may be caused by a faulty rating insert, receiver, or
	sensor coil. Recheck that the insert rating matches the motor. If it is correct, carefully remove it from the receiver by
	alternately lifting sides with a knife blade or thin screwdriver, and make sure it has no pins bent over. If the insert is
	correct and its pins are okay, replace receiver and/or sensor coils.
	This is a normal protective function.
	A. Make sure the rating insert is correct for the motor.
	B. Adjusting the underload setting as described to allow the desired range of operating conditions. Note that a
Underload Light On	DECREASE in underload setting is required to allow loading without trip.
	C. Check for drop in amps and delivery just before trip, indicating pump breaking suction, and for unbalanced
	line current.
	D. With the power turned off, recheck motor lead resistance to ground. A grounded lead can cause underload trip.

60