Installed as per this guide and follow…
Installed as per this guide and follow up with vortopt_serviceat163.com But this system is not operable and no replacement offered till todate. Do not buy this Vortopt 1000GPD Under Sink Water Purifier 3:1 Pure to Drain, Tankless RO Water Filter System, 0.0001um Purification for Drinking, Reduces TDS, Smart Faucet, Black o White