3M CSFM1254 operating instructions System Troubleshooting Guide, Problem Cause Solution

SECTION 5: SYSTEM TROUBLESHOOTING GUIDE

Problem	Cause	Solution
	A. Electrical service to unit interrupted	A. Assure permanent electrical service (check fuse, plug, pull chain,
		or switch)
	B. Timer not working.	B. Replace timer assembly.
1. Hard water (unit not using salt; liquid level in
	C. Timer improperly set	C. Check programming function
brine tank NOT too high)
	D. Safety brine valve not opening	D. Replace safety brine valve
	E. Salt “bridged” in brine tank	E. Breakup salt
	F. Meter not functioning	F. Clean or replace as necessary
	A. Bypass open	A. Close bypass (replace if necessary)
	B. Timer improperly set	B. Increase frequency of regeneration
2. Hard water (unit using salt; liquid level in	C. No salt in brine tank	C. Add salt; maintain above water level
	D. Excessive water usage	D. Increase frequency of regeneration and/or salt setting (See HOW TO
brine tank NOT too high)
		SET TIMER)
	E. Unit installed backwards	E. Reinstall unit
	F. Unit undersized	F. Replace with larger unit
	A. Brine valve not closing	A. Replace brine valve
	B. Salt setting too high	B. Reset timer
	C. Injector or Injector screen plugged	C. Clean injector and screen
3. Liquid level in brine tank TOO high
	D. Drain line frozen, plugged or restricted	D. Free drain
	E. Salt “mushed” or sand from salt plugging bottom of	E. Clean out brine tank (see instructions)
	brine tank
	F. Incorrect brine line flow control (BLFC)	F. Replace with correct flow control (see specifications)
4. System regenerates at wrong time	A. Timer improperly set	A. Reset timer
of day
	A. Foreign material in control valve	A. Remove piston assembly and inspect bore: remove foreign material
		and check control in various regeneration positions
5. Water continuously flows to drain
	B. Internal control leak	B. Replace seals and/or piston assembly
	C. Control valve jammed in brine or backwash position	C. Replace piston, seals and spacers
6. Water tastes salty	A. Salt setting too high	A. Reset program cycle
	B. Cyclone distributor tube too short	B. Replace
7. White spots on glassware and dark surfaces	A. Sodium residual resulting from water having very high	A. Installation of additional water treatment equipment such as
	hardness or total dissolved solids (TDS)	reverse osmosis or demineralization
	A. Iron build-up in line to water conditioner	A. Clean line to water conditioner
	B. Iron build-up in water conditioner	B. Clean control and add Iron-X Mineral Cleaner to resin bed: increase
8. Low water pressure (low flow rate)		frequency of regeneration
	C. Well pumping sand	C. Install sand trap
	D. Pump losing capacity	D. Contact pump repair service
9. “Rotten egg” smell (from hot water only)	A. Magnesium rod in water heater	A. Replace with aluminum rod or remove
	A. Hydrogen sulfide (“sulfur”) in water supply	A. Install Sul-X Sulfur Reduction System
10. “Rotten egg” smell (from both hot and cold	B. Bacterial iron in water supply	B. Install Chem-Free Iron Reduction System
water
	C. Algae in water supply	C. Pour approximately 1/2 cup laundry bleach into brine well just
		before regeneration as frequently as necessary
11 Loss of resin through drain	A. Air in water system	A. Assure that well system has proper air eliminator control: check for
		dry well condition

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