Specifications
23
Troubleshooting
Problem Possible Causes Solutions
EASYpure LF completely  No electrical power to  Ensure that the EASYpure LF power 
inactive. (pump not operating,  EASYpure LF. cord is connected to a live power
control panel not lit, etc.). source and completely plugged into
electrical outlet. 
Make sure power entry module switch is on.
Fuses blown. Replace the fuses as indicated 
in the Fuse Replacement section.
Pump runs, but no display Main PCB and display PCB 
Disconnect unit from power.
(no digital display). not connected. Check and reconnect boards. 
Pump does not run. Display lit. Low water in feedwater tank  Replenish feedwater. Check inlet 
or low inlet water pressure. water line for constrictions, blockages
or closed valves. 
Jumper or devices not  Install.
installed in pump interlock.
Pump worn out or defective. Replace pump.
Display reads “Err” when Resistivity cell lead Check resistivity cell lead.
checking resistivity. disconnected.
Air in system. Purge air from system by drawing
off water according to the instructions in the
Operation section. 
Resistivity cell dirty. Clean cell and reinstall. 
Recirculated water will not Exhausted cartridge. Replace the cartridges as indicated in
rinse up to desired purity level. the Cartridge Replacement section.
Cartridges out of order. Install the cartridges in the proper order as 
indicated In the Cartridge Installation
section.
Reduced or no product flow 0.2 micron final filter Replace the 0.2 filter assembly as 
from the 0.2 filter assembly. clogged. indicated in the 0.2 Micron Filter 
Replacement section.
Cartridges improperly rinsed. Rinse cartridges; install new filter.
Troubleshooting










