Watersoft
Watersoft Water Softeners Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Control panel displays E01 and the softener will not start a regeneration cycle
Main Control Board Communication Fault
E02
Display shows E02 and unit does not draw brine during regeneration
Brine Draw / Injector Circuit Fault
E03
E03 displayed and regeneration stops mid-cycle
Drive Motor / Cam Position Error
E04
E04 error and no water flow through the softener during service mode
Flow Sensor / Turbine Signal Fault
E05
E05 displayed and unit fails to refill brine tank after regeneration
Brine Refill Solenoid / Valve Fault
E06
E06 error and display shows incorrect time or loses programming frequently
Real-Time Clock / Memory Backup Fault
E07
E07 displayed and unit regenerates at incorrect intervals or not at all
Metered Regeneration Logic / Usage Data Fault
E08
E08 error and display is dim or flickering, unit may reboot randomly
Low Voltage / Power Supply Fault
E09
E09 displayed and unit is stuck in regeneration, continuously backwashing or brining
Regeneration Timeout / Stuck Valve Position
E10
E10 error and water remains hard even after recent regeneration
Capacity / Resin Bed Performance Fault
E11
E11 displayed and unit reports high salt usage or frequent regenerations
Excessive Regeneration / Meter Calibration Fault
E12
E12 error and display shows abnormal temperature or shuts down in hot locations
Control Board Over-Temperature Fault
E13
E13 displayed and unit will not accept new programming or buttons are unresponsive
Keypad / User Interface Fault
E14
E14 error and unit reports salt level sensor fault (if equipped)
Salt Level Sensor / Float Switch Fault
E15
E15 displayed and drain runs continuously even when not regenerating
Continuous Drain / Valve Seal Fault
E16
E16 error and unit indicates high inlet pressure or pressure sensor fault (on models with sensor)
Inlet Pressure Sensor / Overpressure Fault
E17
E17 displayed and unit reports low inlet pressure or fails to regenerate properly
Low Pressure / Insufficient Flow Fault
E18
E18 error and unit indicates drain line restriction
Drain Line Flow Fault
E19
E19 displayed and unit reports brine tank overflow risk
Brine Tank Overfill / Safety Float Fault
E20
E20 error and unit indicates communication failure with remote display or wireless module (if equipped)
External Module Communication Fault
Symptom
Brine is not being drawn from the brine tank during regeneration
No Brine Draw
Symptom
Brine tank does not refill with water after regeneration (stays dry)
No Brine Refill
Symptom
Brine tank fills with water and may overflow onto the floor
Brine Tank Overfilling
Symptom
Softener appears to be stuck in bypass; water is always hard even when set to service
Bypass / Plumbing Misconfiguration
Symptom
Softener causes a noticeable drop in water pressure throughout the house
High Pressure Drop Through Softener
Symptom
Softener display is on but frozen or unresponsive to button presses
Controller Lockup
Symptom
Softener emits a strong rotten egg (sulfur) or musty odor in the water
Odor in Softened Water
Symptom
Softener frequently loses time and settings after power interruptions
Loss of Programming / Backup Failure
Symptom
Softener is leaking water from the control valve area
Control Valve External Leak
Symptom
Softener is stuck in regeneration and does not return to service mode (no code shown)
Stalled Regeneration Cycle
Symptom
Softener makes loud clicking, grinding, or knocking noises during regeneration
Noisy Drive Mechanism
Symptom
Softener occasionally delivers bursts of very salty water after regeneration
Residual Brine in Service Water
Symptom
Softener regenerates at unexpected times, such as during peak water use
Incorrect Regeneration Scheduling
Symptom
Softener uses excessive salt compared to expected consumption
High Salt Consumption
Symptom
Softener uses very little or no salt over several weeks
Low or No Salt Consumption
Symptom
Softener will not power on; display is blank
No Power to Control Head
Symptom
Softener will not start a regeneration cycle at the programmed time
Regeneration Initiation Failure
Symptom
Water appears cloudy or milky after passing through the softener
Cloudy Softened Water
Symptom
Water leaking from around the brine tank or brine well
Brine Tank Leak
Symptom
Water remains hard even though the Watersoft softener appears to run normally (no error code)
Ineffective Softening / Resin Exhaustion
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Control panel displays E01 and the softener will not start a regeneration cycle
|
Main Control Board Communication Fault | View Details |
| E02 |
Display shows E02 and unit does not draw brine during regeneration
|
Brine Draw / Injector Circuit Fault | View Details |
| E03 |
E03 displayed and regeneration stops mid-cycle
|
Drive Motor / Cam Position Error | View Details |
| E04 |
E04 error and no water flow through the softener during service mode
|
Flow Sensor / Turbine Signal Fault | View Details |
| E05 |
E05 displayed and unit fails to refill brine tank after regeneration
|
Brine Refill Solenoid / Valve Fault | View Details |
| E06 |
E06 error and display shows incorrect time or loses programming frequently
|
Real-Time Clock / Memory Backup Fault | View Details |
| E07 |
E07 displayed and unit regenerates at incorrect intervals or not at all
|
Metered Regeneration Logic / Usage Data Fault | View Details |
| E08 |
E08 error and display is dim or flickering, unit may reboot randomly
|
Low Voltage / Power Supply Fault | View Details |
| E09 |
E09 displayed and unit is stuck in regeneration, continuously backwashing or brining
|
Regeneration Timeout / Stuck Valve Position | View Details |
| E10 |
E10 error and water remains hard even after recent regeneration
|
Capacity / Resin Bed Performance Fault | View Details |
| E11 |
E11 displayed and unit reports high salt usage or frequent regenerations
|
Excessive Regeneration / Meter Calibration Fault | View Details |
| E12 |
E12 error and display shows abnormal temperature or shuts down in hot locations
|
Control Board Over-Temperature Fault | View Details |
| E13 |
E13 displayed and unit will not accept new programming or buttons are unresponsive
|
Keypad / User Interface Fault | View Details |
| E14 |
E14 error and unit reports salt level sensor fault (if equipped)
|
Salt Level Sensor / Float Switch Fault | View Details |
| E15 |
E15 displayed and drain runs continuously even when not regenerating
|
Continuous Drain / Valve Seal Fault | View Details |
| E16 |
E16 error and unit indicates high inlet pressure or pressure sensor fault (on models with sensor)
|
Inlet Pressure Sensor / Overpressure Fault | View Details |
| E17 |
E17 displayed and unit reports low inlet pressure or fails to regenerate properly
|
Low Pressure / Insufficient Flow Fault | View Details |
| E18 |
E18 error and unit indicates drain line restriction
|
Drain Line Flow Fault | View Details |
| E19 |
E19 displayed and unit reports brine tank overflow risk
|
Brine Tank Overfill / Safety Float Fault | View Details |
| E20 |
E20 error and unit indicates communication failure with remote display or wireless module (if equipped)
|
External Module Communication Fault | View Details |
| – |
Brine is not being drawn from the brine tank during regeneration
|
No Brine Draw | View Details |
| – |
Brine tank does not refill with water after regeneration (stays dry)
|
No Brine Refill | View Details |
| – |
Brine tank fills with water and may overflow onto the floor
|
Brine Tank Overfilling | View Details |
| – |
Softener appears to be stuck in bypass; water is always hard even when set to service
|
Bypass / Plumbing Misconfiguration | View Details |
| – |
Softener causes a noticeable drop in water pressure throughout the house
|
High Pressure Drop Through Softener | View Details |
| – |
Softener display is on but frozen or unresponsive to button presses
|
Controller Lockup | View Details |
| – |
Softener emits a strong rotten egg (sulfur) or musty odor in the water
|
Odor in Softened Water | View Details |
| – |
Softener frequently loses time and settings after power interruptions
|
Loss of Programming / Backup Failure | View Details |
| – |
Softener is leaking water from the control valve area
|
Control Valve External Leak | View Details |
| – |
Softener is stuck in regeneration and does not return to service mode (no code shown)
|
Stalled Regeneration Cycle | View Details |
| – |
Softener makes loud clicking, grinding, or knocking noises during regeneration
|
Noisy Drive Mechanism | View Details |
| – |
Softener occasionally delivers bursts of very salty water after regeneration
|
Residual Brine in Service Water | View Details |
| – |
Softener regenerates at unexpected times, such as during peak water use
|
Incorrect Regeneration Scheduling | View Details |
| – |
Softener uses excessive salt compared to expected consumption
|
High Salt Consumption | View Details |
| – |
Softener uses very little or no salt over several weeks
|
Low or No Salt Consumption | View Details |
| – |
Softener will not power on; display is blank
|
No Power to Control Head | View Details |
| – |
Softener will not start a regeneration cycle at the programmed time
|
Regeneration Initiation Failure | View Details |
| – |
Water appears cloudy or milky after passing through the softener
|
Cloudy Softened Water | View Details |
| – |
Water leaking from around the brine tank or brine well
|
Brine Tank Leak | View Details |
| – |
Water remains hard even though the Watersoft softener appears to run normally (no error code)
|
Ineffective Softening / Resin Exhaustion | View Details |
No matching codes found
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