GE GNPR48L, GNPR40L Advanced troubleshooting, Problem, Possible Causes, What To Do

Advanced troubleshooting.

Problem	Possible Causes	What To Do
Run out of soft water	Incorrect injector	• With water pressure > 70 psi, use 4 bump injectors
between regenerations		(WS15X10059).
	Improper regeneration	• Repeat regeneration, making certain correct salt dosage is
		used.
	Fouled resin bed	• Use resin cleaner.
	Incorrect salt dose and capacity setting • Set Salt per Regen and Capacity setting to proper level. Refer to
		the Programming the Control sections.
	Incorrect hardness	• Set to correct hardness. Refer to the Programming the
		Control sections.
	Water hardness has increased	• Set to new value. Refer to the Programming the Control
		sections.
	Restricted meter turbine rotation due • Remove bypass, free up turbine and flush with clean
	to foreign material in meter housing	water. Turbine should spin freely—if not, replace meter.
	Water usage below 1/5 gallon	• Repair leaky plumbing and/or fixtures.
	per minute

Brine draw value from Advanced Programming Parameters table is incorrect

•Set correct brine draw value.

Incorrect salt type or use of grid plate (salt shelf)

•Do not use block salt or grid plate (salt shelf) in brine tank.

Control does not draw	Low water pressure	• Increase water pressure (20 psi at conditioner).
brine	Restricted drain line	• Remove obstruction.
	Injector or injector screen is plugged	• Clean injector and screen. Refer to the Cleaning the Injector and
		Screen section.
	Injector defective	• Replace injector and cap.
	Valve disc 3 and/or 5 not closed	• Manually operate cam gear to flush out foreign matter holding
		disc open. Replace if needed.
	Air check valve prematurely closed	• Briefly put control into brine refill status. Refer to the Manual
		Regeneration section. Repair air check valve if needed.
Brine tank overflow	Brine valve disc 1 held open	• Manually operate cam gear to flush out foreign matter holding
		disc open.
	Valve disc 2 not closed during brine	• Manually operate cam gear to flush out foreign matter holding
	draw, causing brine refill	disc open.
	Air leak in brine line to air check	• Check all connections in brine line for leaks.
	Salt setting too high	• Set in new values. Refer to Advanced Programming section.
	Float assembly malfunctions	• Inspect float assembly in brine well for proper operation.
		It must be able to move freely.
Intermittent or irregular	Low water pressure	• Increase water pressure (20 psi at conditioner).
brine draw	Defective injector	• Replace both injector and injector cap.
No conditioned water	Unit did not regenerate	• Check for power.
after regeneration	No salt in brine tank	• Add salt to brine tank.
	Plugged injector	• Remove injector and flush it and injector screen.
	Air check valve closed prematurely	• Put control momentarily into REFILL to free air check. Replace
		or repair air check as needed.

Incorrect salt type or use of grid plate (salt shelf) in brine tank

•Do not use block salt or grid plate (salt shelf) in brine tank.

Control backwashes at	Incorrect backwash controller	• Replace with correct size controller.
excessively low or high	Foreign matter affecting controller	• Remove and clean controller.
rate	operation

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