Antunes, AJ UF-420/440 owner manual Troubleshooting, Problem, Possible Cause, Corrective Action

UF SERIES WATER FILTRATION SYSTEM

TROUBLESHOOTING

Problem	Possible Cause	Corrective Action
Unit does not have power.	The power cord is not correctly plugged	Plug power cord in correctly.
	in.
The Control Display is blank.	The power cord is not correctly plugged	Plug power cord in correctly.
	in.
	Control Board is inoperable.	Contact your maintenance person or Authorized
		Service agency.
	Transformer is inoperable.
No water comes out of the filter	Inlet Valve closed	Open the Inlet Valve
system
	Inlet Strainer is plugged	Clean/replace Inlet Strainer
	End of the capillaries plugged	Clean/replace Filter Cartridge
Low water flow/pressure out of	See above.	See above.
system
	The system may be in a flush cycle.	Wait for the flush cycle to end.
	Flushing program not set correctly for	Decrease the flush interval and increase the
	water conditions.	flush duration (refer to the Operation section of
		this manual).
	Drain Valve is stuck open.	Replace/rebuild the Drain Valve.
	The inlet water pressure is too low.	Boost the inlet water pressure/replace pipes.
Water tastes bad.	Storage/shipping solution not completely	Flush system for a longer period of time.
	flushed out of system.
	Biological growth in pipes.	Sanitize plumbing.
	Water conditions changed.	Consider installing taste and odor filtration.
	Broken capillary in Filter Cartridge.	Replace Filter Cartridge.
Flush runs continuously.	Drain Valve stuck open.	Replace/rebuild the Drain Valve.
	Controller sending continuous signal to	Replace the controller.
	valve.
Flush runs too long.	Program duration set too long.	Re-program the unit to flush for a shorter dura-
		tion of time.
Flush occurs at time of high water	The Flush Interval is set to interfere with	Change Flush Interval/reprogram time. Unplug
usage.	water use.	unit and plug in at a time of lower water usage.
Water splashes at drain during	Drain line not positioned properly.	Reposition the end of the drain line.
flush.
Water leaks at the ends of the	Cartridge end connections are not tight	Tighten with strap wrench if necessary.
Filter Cartridge after changing	enough.
cartridges.
	O-rings not lubricated.	Lubricate O-rings with food-grade lubricant.
	O-rings are split, cut, or twisted	Replace O-rings.
Water leaks from Permeate port.	Permeate port is not tight enough	Tighten, with strap wrench if necessary.
	O-ring not lubricated.	Lubricate O-ring with food-grade lubricant.
	O-ring split, cut, or twisted.	Replace O-ring.
Water leaks from system fitting or	Fitting broken or loose.	Retighten or replace the fitting.
connection.
	Not enough pipe thread sealant used.	Redo the fitting with the proper amount of seal-
		ant.

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