Rainfresh CGFE948 User Manual (English)

Questions and Answers:

T
Troy TurnerAug 15, 2025
What to do if my Rainfresh CGFE948 Water Filtration Systems filter is not working?
- E
  Eric MercadoAug 15, 2025
  If your Rainfresh Water Filtration System filter isn't working, there could be several reasons: * The control valve might be unplugged. Ensure it is properly plugged into the power supply. * The bypass valve may be closed. Make sure to open it. * The chemical tank may be empty. Add POT PERM to the tank. * The injector/screen could be plugged. Clean these parts. * The brine refill settings might be incorrect. Double-check and correct them. * There could be a leak between the valve and riser tube. Inspect the riser for cracks or O-ring damage and replace any faulty parts. * Finally, there might be an internal valve leak. In this case, replace the valve seals, spacer, and piston assembly.
T
Tiffany FordAug 18, 2025
Why is my Rainfresh CGFE948 unit failing to draw chemical?
- P
  Patricia RodriguezAug 18, 2025
  If your Rainfresh Water Filtration System unit isn't drawing chemical, consider these potential causes: 1. The elastic band on the safety float in the chemical tank might not have been removed. Remove it according to the instructions. 2. The DLFC (Drain Line Flow Control) could be plugged. Clean the DLFC. 3. The injector or screen might be plugged. Clean these parts. 4. The inlet pressure might be too low. Increase the minimum pressure to at least 25 psi. 5. There could be an internal valve leak. Replace the seals, spacer, and piston assembly. 6. Vacation Mode might be set to “Yes”. Under level 1 programming, set vacation mode to “No”.
E
Evan TurnerAug 21, 2025
How to fix low water pressure in Rainfresh Water Filtration Systems?
- S
  stevenevansAug 21, 2025
  If you're experiencing low water pressure with your Rainfresh Water Filtration System, it could be due to: * Iron or manganese buildup in the line feeding the filter. Try cleaning or replacing the supply line. * Iron buildup inside the valve or tank. Clean the control valve and increase the regeneration frequency. * The inlet of the control valve being plugged with dirt. Clean the control valve inlet.
A
Angela LeonardAug 25, 2025
What to do if there is too much water in chemical tank of Rainfresh Water Filtration Systems?
- T
  Troy RiveraAug 25, 2025
  If there's too much water in the chemical tank or if the chemical tank is overflowing in your Rainfresh Water Filtration System, here's what might be happening: * The injector or screen could be plugged. Clean these parts. * The brine valve might be plugged. Clean those parts too. * The DLFC (Drain Line Flow Control) could be plugged. Clean the DLFC. * The brine float might have been incorrectly set. Set the brine float to the correct mark.
J
Julia JohnsonAug 27, 2025
Why Rainfresh CGFE948 Water Filtration Systems unit fails to start a regeneration cycle?
- R
  Riley PaulAug 27, 2025
  If your Rainfresh Water Filtration System unit isn't starting a regeneration cycle: * Check the electrical service to ensure there is a power supply and reset the time of day. * A defective circuit board may be the cause. Replace any faulty parts.
B
Brandon MartinAug 30, 2025
Why does water flow to drain continuously in Rainfresh Water Filtration Systems?
- D
  David MaldonadoAug 30, 2025
  If water is continuously flowing to the drain in your Rainfresh Water Filtration System, it could be due to: * Incorrect valve settings. Check the valve settings. * An internal leak. Replace the seals, spacer, and piston assembly.
S
Sarah CareySep 2, 2025
What causes greensand media in the drain line of Rainfresh CGFE948 Water Filtration Systems?
- D
  David FisherSep 2, 2025
  If you notice greensand media in the drain line of your Rainfresh Water Filtration System: * There might be air in the water system. Check the well system for proper air elimination. * The drain line flow control (DLFC) could be incorrect or missing. Check and replace the DLFC.
N
Nicholas FischerSep 5, 2025
Why is POT PERM use high in my Rainfresh Water Filtration Systems?
- M
  Michael RoseSep 5, 2025
  If POT PERM usage is high in your Rainfresh Water Filtration System, the refill time may be too high. Correct the brine refill settings.
B
Brian RichardsonSep 8, 2025
Why does my Rainfresh Water Filtration Systems unit cycle continuously?
- J
  Joseph BennettSep 8, 2025
  If your Rainfresh Water Filtration System unit cycles continuously, the circuit board may be defective. Replace any faulty parts.
B
bennettmelissaSep 12, 2025
What causes POT-PERM in the water line of Rainfresh CGFE948 Water Filtration Systems?
- T
  Tiffany SchmidtSep 12, 2025
  If there is POT-PERM in the water line of your Rainfresh Water Filtration System, the regeneration settings are wrong. Ensure that under level 2 programming, all parameters are set to default settings.

Rainfresh CGFE948 Specifications

General

Brand	Rainfresh
Model	CGFE948
Category	Water Filtration Systems
Language	English

Summary

System Specifications

How the CGFE System Works

Safety Precautions

Cautions Before Installation

Provides crucial advice before commencing the installation process.

Installation

Electrical Requirements

Details the necessary electrical specifications for the unit's operation.

Unpacking the unit

Instructions for safely removing the unit and its components from the packaging.

Installation Location

Guidance on selecting an appropriate and safe place for installing the filter unit.

Plumbing in your CGFE Greensand Filter

Step-by-step instructions for connecting the filter to the water supply and drain.

Add the chemical (Pot-Perm)

Procedure for adding the essential chemical regenerant (Pot-Perm) to the system.

Start Up & Programming

Language Selection

Steps to select the preferred language for the control unit's display.

Basic Programming

Guide to setting essential parameters like date, time, and regeneration days.

Advanced Programming

Instructions for adjusting detailed regeneration cycle times and settings.

Manual Regeneration

Procedure to manually initiate the regeneration cycle for the filter.

Other Features

Control Operation During a Power Failure

Explains how the unit maintains settings and operation after power interruptions.

Safety Float

Description of the safety float feature preventing tank overflow.

New Sounds

Information about typical sounds the filter might make during operation.

Manual Bypass

Instructions on how to use the bypass valve for isolation or emergency situations.

Maintenance

Adding POT-PERM

Guidance on regularly refilling the POT-PERM chemical tank.

How to calculate Regeneration Frequency

Methodology for determining the optimal regeneration schedule based on water quality.

Winterizing the system

Instructions for preparing the unit for cold weather to prevent freezing.

Care of Your Greensand filter

Tips for cleaning and maintaining the external appearance of the filter.

Cleaning the Injector Assembly

Procedure for cleaning the injector assembly to ensure proper chemical draw.

Troubleshooting

Unit fails to start a regeneration cycle

Addresses issues where the unit does not initiate its regeneration process.

Filter does not seem to be working

Troubleshooting steps for when the filter is not effectively treating water.

POT PERM use is high

Diagnoses why the POT PERM chemical is being consumed at an excessive rate.

Low water pressure

Identifies causes and solutions for reduced water pressure after the filter.

Greensand media in drain line

Troubleshooting the presence of filter media being discharged through the drain.

Too much water in chemical tank or chemical tank overflowing

Resolves issues related to excessive water in the chemical tank or overflow.

Unit fails to draw chemical

Diagnoses why the unit is not drawing the POT PERM solution.

Unit cycles continuously

Addresses problems where the unit repeatedly enters regeneration cycles.

Water flows to drain continuously

Troubleshooting continuous water flow to the drain line.

POT-PERM in the water line

Diagnoses POT-PERM contamination in the treated water supply.

Parts List

Limited Warranty

Related product manuals