RO-Perm Troubleshooting

Below are the common problems you might encounter as an APEC RO-Perm Owner. Please identify the problems on your RO-Perm with the help of the diagram. Click on the problems for solutions and literatures. If problems persist, please call your APEC technical support center for further instructions (Toll Free: 1-800-880-4808).

Problem
Visual Reference and Brief Explanation
Generally refer to the flow at the faucet
Generally refer to the flow at the faucet
Water from the Brine out line going to the drain saddle
RO water from the faucet
The Pump, perfectly fine
Check Valve. Point E on Figure 1
RO water from the faucet
See Figure 1
All connections and Possible missing O-Rings
RO water

Troubleshoot Points Identification:

Point A: Feed water inlet into Stage-1 filter

Point B: Stage-3 filter's outlet port

Perm In: For Permeate Pumped systems, the permeate pump replaces the ASO valve, it serves both as a pump and an auto-shut-off valve.

Perm Out: RO water is jetted out from this line to the tank.

Brine In: Waste water enter from this line.

Brine Out: Waste water exit form this line

Point D: Stage-4 Membrane housing inlet port. Feed water after passing the 3 prefilters enters the Membrane at this port.

Point E: Check Valve. The filtered water from the Membrane passes through this Check Valve before it enters the storage tank. The Check Valve serves to block the water from back-flowing from the tank back into the membrane.

Point F: T-fitting on the Stage-5 filter. This end of the T-fitting connects to the CLEAR pure water line.

Point G: T-fitting on the Stage-5 filter. This other end of the T-fitting connects to the YELLOW pure water line which goes to the tank's valve.

Point H: The output end of Stage-5 filter. Pure water leaves Stage-5 filter via this port, and flows onto the dispensing faucet.

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