GE 255 operation manual System Troubleshooting, Problem Possible Cause Solution

ERR 4 is displayed.	If single tank system..	Verify system setting is programmed to
		255 “L”.
	Controller on tank 2 does not know the	Wait for two minutes for the controller to
	position of the camshaft. Camshaft	return to Home position. The hourglass
	should be rotating to find Home position.	should be flashing on the display
		indicating the motor is running.
	Camshaft on tank 2 is not turning during	Check that motor is connected. Verify that
	ERR 4 display.	motor wire harness is connected to motor
		and controller module.
		Verify that optical sensor is connected
		and in place.
		Verify that motor gear has engaged cam
		gear.
		If everything is connected, try replacing in
		this order:
		1. Wire Harness, Motor, Optical Sensor
		Assy
		2. Controller
	Camshaft on tank 2 is turning more than	Verify that optical sensor is in place and
	five minutes to find Home position:	connected to wire.
		Verify that camshaft is connected
		appropriately.
		Verify that no dirt or rubbish is clogging
		any of the cam slots.
		If motor continues to rotate indefinitely,
		replace the following components in this
		order:
		1. Wire Harness, Motor, Optical Sensor
		Assy
		2. Controller
Check Salt Light is displayed -	No regenerant draw or insufficient	Ensure salt/ regenerant is available.
Press the regen button to	regenerant detected during	Check for regenerant draw.
turn off the check salt light.	regeneration.	Inspect regenerant line for leaks

System Troubleshooting

Problem		Possible Cause		Solution
Regenerant tank overflow.	a.	Uncontrolled refill flow rate.	a.	Remove refill flow control to clean ball
				and seat.
	b.	Air Leak in regenerant line to air	b. Check all connections in regenerant line
		check.		for leaks.
	c.	Drain control clogged with resin or	c.	Clean drain control.
		other debris.
	d.	Aircheck ball on 255 valve	d.	Check all connections in regenerant line
		prematurely seating due to air leak		for leaks.
Flowing or dripping water at	a.	Valve stem return spring weak.	a.	Replace spring. (Contact dealer).
drain or regenerant line after	b.	Debris is preventing valve disc from	b.	Remove debris.
regeneration.
		closing.

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