Issue
Pump Does Not
Start
Pump Runs
Constantly (24/7)
For questions or concerns, please contact us at support@ispring lter.com or visit our help
page at ispring lter.com/support.
Add-On Kit (#ACL1): Kit for adding extra in-line lters to an existing system, including
quick-connect elbow ttings, lter clamps, and additional tubing.
Alkaline Remineralization Filter (#FA15): 6th stage lter that remineralizes RO water and
balances pH levels.
Auto Flush Solenoid Valve (#ASOF7): Automatically ushes the RO membrane to extend
lifespan and improve e ciency.
Booster Pump (#PMP5): 24-volt pump designed for use with iSpring residential RO systems.
Check Valve (#ACV1K): One-way valve that prevents water from owing back into the
membrane housing, located on the RO water port.
CTO Carbon Block Filter (#FC15): 3rd stage, 5-micron carbon block lter that reduces
chlorine, taste, and odors before reaching the RO membrane.
Drain Saddle (#ADS1K): Secures the drain line to your under-sink drain pipe.
Drinking Faucet (#GA1-BN): Non-air gap faucet for RO water with a 1/4" tubing connection;
ts countertop holes of 1/2" to approximately 1 1/2".
Possible Cause
No power
Incoming water pressure
below 30 psi
Faulty low-pressure switch
High-pressure switch isn't
turning pump o despite
normal output
Low or no output ow,
indicating possible check valve
or pump failure
Glossary and Terms to Know
Possible Solution
Ensure pump is plugged in and not in a garbage
disposal outlet (may only supply power when
disposal is active)
Verify 30 psi minimum; low-pressure switch activates
pump at this level
Replace switch to allow pump activation
Replace high-pressure switch
Contact support for additional troubleshooting
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