www.123filter.com | (678) 261-7611 sales@ispringfilter.com Page 7• Reverse Osmosis Membrane is fouled.• Air pressure in holding tank is incorrect.• Air Bladder in Holding Tank is ruptured.• Holding Tank valve is closed.• No water to drain. Drain Flow Restrictor is clogged.• Check Valve on RO Membrane Housing is stuck.• The Automatic Shut-Off Valve is Malfunctioning.Will the water out of UV filter be hot?Traditional, the water coming out of the UV filter is a bit hot, up to 117F, for the first few seconds. However, iSpring UV filterfeatures Smart Flow Sensor valve that automatically turns on and off UV by water flow, simultaneously controlled by drinkingfaucet. The UV stays off until drinking faucet is turn on. So no more hot water out of UV filter.How do you compare your tankless RO system RCS5T to GE Merlin 700GPDsystem?Our RO system is a complete 5-stage filtration system, with 3 pre filters (Sediment, GAC, and CTO), Side-Flow®membranes, and post filter; while the GE Merlin 700GPD has only one prefilter (either sediment or carbon), two membranes,and 1 post filter. Therefore, the GE Merlin is for use in light commercial applications where a separate pre-filter system orbackwashing carbon filter system will be utilized. Also, our tankless RO system utilizes patented Side-Flow technology,which waste ratio is less than 1, as compared to the 3:1 in other systems, saves up to 2/3 of water.How to reach usLocal / International: 678-261-7611 Monday – Friday 9AM – 5PM ESTFax: 678-530-1070Office Hours: Monday-Friday 9:00 a.m. - 5 p.m. ESTTechnical Support Hours: Monday-Friday 9:00 a.m. - 5:00 p.m. ESTMailing Address:iSpring Water Systems3020 Trotters Pkwy, Alpharetta, GA 30004 USA