E20
Rayne
Overtemperature / Hot Water Exposure Fault
E20 displayed and unit reports high temperature or overheated condition
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Hot water backflowing into softener, Incorrect plumbing (softener installed on hot line), Failed temperature sensor, Bypass check valve failure
How to Fix / Troubleshooting
Safety first: Hot water in a softener can damage internal components. Use caution when touching plumbing.
- 1. Verify plumbing: Confirm the Rayne softener is installed on the cold water supply line only. If connected to hot, correct the plumbing immediately.
- 2. Check for backflow: Ensure check valves or mixing valves are functioning and not allowing hot water to migrate backward into the softener.
- 3. Inspect temperature sensor: If equipped, check the sensor wiring and mounting. Replace if visibly damaged.
When to call a technician: Internal damage from hot water may require replacement of resin, seals, or the entire valve assembly.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Rayne temperature sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements