Rheem rH42 User Manual (English)

Questions and Answers:

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mdeleonAug 17, 2025
What to do if my Rheem rH42 Water Dispenser has no soft water and the display is blank?
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  sonya68Aug 17, 2025
  If your Rheem Water Dispenser shows no soft water and the display is blank, first check for any power loss at the wall outlet or a disconnected power cable at the back of the electronic board. Correct any power issues and reset the electronic controls. Then use the RECHARGE NOW feature. Also, check the fuse, circuit breaker, or circuit switch. Replace the fuse, reset the circuit breaker, or switch the circuit on, and then use the RECHARGE NOW feature. If the issue persists, the electronic control board may be malfunctioning, and you may need to replace it.
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Tara GriffinAug 19, 2025
Why is my Rheem Water Dispenser sometimes dispensing hard water?
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  grantblakeAug 19, 2025
  If your Rheem Water Dispenser is sometimes dispensing hard water, check if the time is set correctly and change the time setting if it's incorrect. Also, you should check if the water hardness is set correctly. Hot water usage during regeneration can also cause this issue, so avoid using hot water while the softener is regenerating. A leaking faucet or toilet valve can also cause the issue, so fix any leaks and always fully close faucets.
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craigmichaelAug 22, 2025
What to do if my Rheem rH42 Water Dispenser has no soft water and the salt level isn't dropping?
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  Vanessa JonesAug 22, 2025
  If your Rheem Water Dispenser has no soft water and the salt level isn't dropping, the salt storage tank may be bridged. Refer to the “Breaking a Salt Bridge” section to break it. Additionally, check if the bypass valve(s) are in the “bypass” position and move them to the “service” position.
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Danny LangAug 28, 2025
How to remove iron from water using Rheem Water Dispenser?
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  Erica KingAug 28, 2025
  If you notice iron in the water from your Rheem Water Dispenser, test the untreated water for hardness and iron, and program the water softener accordingly. If there is iron in soft water, clean the resin bed with Resin Bed Cleaner, following the instructions on the package. Note that bacterial or organic bound iron cannot be treated by a water softener.
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William MirandaAug 30, 2025
What to do if the status light is off on my Rheem Water Dispenser, but the display is not blank?
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  carolynespinozaAug 30, 2025
  If the status light is off on your Rheem Water Dispenser, but the display is not blank, the status light may have dislodged from its holder. Remove the top cover and reinsert the status light into its holder.
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Jonathan JenningsSep 2, 2025
Why is there resin in my Rheem rH42 Water Dispenser plumbing?
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  Ryan LewisSep 2, 2025
  If you find resin in your household plumbing connected to the Rheem Water Dispenser, it could be due to a crack in the distributor or riser tube. Replace the resin tank assembly.
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Carlos FisherSep 4, 2025
What causes the salt storage tank of Rheem rH42 to leak?
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  april70Sep 5, 2025
  If the salt storage tank of your Rheem Water Dispenser is leaking, it is likely due to a crack in the brine tank. Replace the salt storage tank assembly.
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Melissa NewmanSep 7, 2025
Why is the motor stalled or clicking on my Rheem rH42 Water Dispenser?
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  Megan HaynesSep 7, 2025
  If your Rheem Water Dispenser's motor is stalled or clicking, it could be due to a motor malfunction or an internal valve fault causing high torque on the motor. You can try replacing the rotor/seal, or replacing the motor and switch.
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larsonkeithSep 12, 2025
What does error code E1, E3, or E4 mean on my Rheem Water Dispenser?
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  Erin PetersSep 12, 2025
  If error code E1, E3, or E4 appears on your Rheem Water Dispenser, it could indicate a fault in the wiring harness or connections to the position switch. Try replacing the wiring harness or connections to the position switch. Alternatively, there may be a fault in the switch itself, in which case you should replace the switch. A fault in the valve causing high torque, or an inoperative motor, could also cause these errors, so replace the rotor/seal or the motor as needed.