Troubleshooting - NOVO NVO465-100 Operating Manual

Trouble Shooting
Issue
A. Unit fails to initiate a
regeneration cycle.
B. Water is hard.
C. Salt use is high.
D. Low water pressure.
E. Resin in drain line.
F. Too much water in brine
tank.
G. Unit fails to draw brine.
H. Valve continuously cycles. 1. Defective position sensor PCB.
I. Flow to drain continuously.
Possible Cause
1. No power supply.
2. Defective circuit board.
3. Power failure.
1. By-pass valve open.
2. Out of salt.
3. Plugged injector / screen.
4. Flow of water blocked to brine tank.
5. Hard water in hot water tank.
6. Leak between valve and central tube.
7. Internal valve leak.
1. Refill time is too high.
1. Iron or scale build up in line feeding unit.
2. Iron build up inside valve or tank.
3. Inlet of control plugged due to foreign materal. Remove piston and clean control valve.
1. Air in water system.
2. Incorrect drain line flow control (DLFC) button.
1. Plugged injector or screen.
2. Valve not regeneratiing.
3. Foreign material in brine valve.
1. Drain line flow control is plugged.
2. Injector or screen is plugged.
3. Inlet pressure too low.
4. Internal valve leak.
1. Valve settings incorrect.
2. Foreign material in control valve.
3. Internal leak.
Possible Solution
Check electrical service, fuse, etc.
Replace faulty parts.
Reset time of day.
Close by-pass valve.
Add salt to tank.
Clean parts.
Check brine tank refill rate.
Repeat flushing of hot water tank required.
Check if central tube is cracked or o-ring is
damaged. Replace faulty parts.
Replace valve seals, spacer, and piston assembly.
Check refill time setting.
Clean pipes.
Clean control and add resin cleaner to clean bed.
Increase regeneration frequency.
Check well system for proper air eliminator
control.
Check for proper flow rate.
Clean parts.
Replace circuit board, motor, or control.
Clean parts.
Clean parts.
Clean parts.
Increase pressure to 25 PSI.
Replace seals, spacers, and piston assembly.
Replace faulty parts.
Check valve settings.
Clean control.
Replace seals, spacers, and piston assembly.
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