Waterguy
Waterguy 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 shows E01 and softener will not start a regeneration cycle
Inlet Water Supply Fault
E02
Display shows E02 and unit will not draw brine during regeneration
Brine Draw / Suction Failure
E03
E03 displayed and softener stuck in regeneration, motor keeps trying to move valve
Control Valve Motor / Cam Position Error
E04
E04 error and time-of-day clock resets or will not keep time
Control Board Power / Memory Fault
E05
E05 displayed and unit does not meter water usage (no gallons counted)
Flow Meter / Turbine Sensor Failure
E06
E06 error and unit regenerates at incorrect times or too frequently
Programming / Parameter Corruption
E07
E07 displayed and regeneration stops midway, leaving unit in backwash or brine stage
Regeneration Cycle Timeout
E08
E08 error and display shows abnormal salt level or salt sensor warning
Salt Level Sensor Fault
E09
E09 displayed and unit reports low brine level even when tank is full of water
Brine Level / Float Switch Error
E10
E10 error and unit will not enter regeneration when commanded
Regeneration Start Inhibit / Safety Interlock
E11
E11 displayed and unit reports high flow or leak alarm when no water is running
False High-Flow / Leak Detection Alarm
E12
E12 error and display backlight works but buttons do not respond
Keypad / User Interface Failure
E13
E13 displayed and unit reports sensor temperature out of range
Temperature Sensor Fault (if equipped)
E14
E14 error and unit indicates resin tank pressure problem
Pressure Sensor / Overpressure Fault (models with pressure monitoring)
E15
E15 displayed and unit reports communication error between display and main board
Internal Communication / Bus Error
E16
E16 error and unit indicates drain valve or brine valve stuck
Auxiliary Valve Actuation Failure
E17
E17 displayed and unit reports resin tank sensor or level error
Resin Tank Sensor Fault (if equipped)
E18
E18 error and unit indicates low voltage or power supply fault
Low Voltage / Power Adapter Error
E19
E19 displayed and unit indicates brine refill error
Brine Refill Flow Fault
E20
E20 error and unit indicates excessive regeneration frequency
Abnormal Regeneration Frequency Alarm
Symptom
Softener brine tank has brown or orange slime and discolored water
Iron Fouling of Brine System
Symptom
Softener cabinet or area around unit is damp or has standing water but no obvious leak while running
Intermittent or Slow Seep Leak
Symptom
Softener causes air spurting from faucets after regeneration
Air Intrusion into Plumbing
Symptom
Softener causes noticeable drop in water pressure throughout the house
Flow Restriction Through Softener
Symptom
Softener display shows normal operation but water tastes salty after regeneration
Residual Brine in Service Water
Symptom
Softener display works but unit never regenerates automatically
No Automatic Regeneration
Symptom
Softener does not use any salt; salt level never goes down over weeks of operation
No Brine Draw / No Salt Consumption
Symptom
Softener emits rotten egg or musty odor from water
Bacterial Growth / Sulfur Odor
Symptom
Softener frequently loses programming after power outages
Inadequate Backup / Memory Retention
Symptom
Softener leaking water from around the control valve head
Control Valve External Leak
Symptom
Softener makes loud banging or hammering noises during regeneration
Water Hammer / Rapid Valve Transition Noise
Symptom
Softener regenerates at the wrong time of day (e.g., during peak water use)
Incorrect Regeneration Time
Symptom
Softener resin tank makes grinding or scraping noises during regeneration
Internal Resin Tank Mechanical Wear
Symptom
Softener stuck in regeneration; continues to run water to drain and never returns to service
Control Valve Stuck in Regeneration
Symptom
Softener uses excessive salt; salt level drops very quickly
High Salt Consumption
Symptom
Softener uses very little water in brine tank; salt forms a solid mass (bridging)
Salt Bridging / Insufficient Brine Refill
Symptom
Softener will not start at all; display is blank and unit appears dead
No Power to Control System
Symptom
Water remains hard at faucets even though softener appears to run normally
No Softening / Hard Water Breakthrough
Symptom
Water softener brine tank overflowing with water and spilling onto floor
Brine Tank Overfill
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Control panel shows E01 and softener will not start a regeneration cycle
|
Inlet Water Supply Fault | View Details |
| E02 |
Display shows E02 and unit will not draw brine during regeneration
|
Brine Draw / Suction Failure | View Details |
| E03 |
E03 displayed and softener stuck in regeneration, motor keeps trying to move valve
|
Control Valve Motor / Cam Position Error | View Details |
| E04 |
E04 error and time-of-day clock resets or will not keep time
|
Control Board Power / Memory Fault | View Details |
| E05 |
E05 displayed and unit does not meter water usage (no gallons counted)
|
Flow Meter / Turbine Sensor Failure | View Details |
| E06 |
E06 error and unit regenerates at incorrect times or too frequently
|
Programming / Parameter Corruption | View Details |
| E07 |
E07 displayed and regeneration stops midway, leaving unit in backwash or brine stage
|
Regeneration Cycle Timeout | View Details |
| E08 |
E08 error and display shows abnormal salt level or salt sensor warning
|
Salt Level Sensor Fault | View Details |
| E09 |
E09 displayed and unit reports low brine level even when tank is full of water
|
Brine Level / Float Switch Error | View Details |
| E10 |
E10 error and unit will not enter regeneration when commanded
|
Regeneration Start Inhibit / Safety Interlock | View Details |
| E11 |
E11 displayed and unit reports high flow or leak alarm when no water is running
|
False High-Flow / Leak Detection Alarm | View Details |
| E12 |
E12 error and display backlight works but buttons do not respond
|
Keypad / User Interface Failure | View Details |
| E13 |
E13 displayed and unit reports sensor temperature out of range
|
Temperature Sensor Fault (if equipped) | View Details |
| E14 |
E14 error and unit indicates resin tank pressure problem
|
Pressure Sensor / Overpressure Fault (models with pressure monitoring) | View Details |
| E15 |
E15 displayed and unit reports communication error between display and main board
|
Internal Communication / Bus Error | View Details |
| E16 |
E16 error and unit indicates drain valve or brine valve stuck
|
Auxiliary Valve Actuation Failure | View Details |
| E17 |
E17 displayed and unit reports resin tank sensor or level error
|
Resin Tank Sensor Fault (if equipped) | View Details |
| E18 |
E18 error and unit indicates low voltage or power supply fault
|
Low Voltage / Power Adapter Error | View Details |
| E19 |
E19 displayed and unit indicates brine refill error
|
Brine Refill Flow Fault | View Details |
| E20 |
E20 error and unit indicates excessive regeneration frequency
|
Abnormal Regeneration Frequency Alarm | View Details |
| – |
Softener brine tank has brown or orange slime and discolored water
|
Iron Fouling of Brine System | View Details |
| – |
Softener cabinet or area around unit is damp or has standing water but no obvious leak while running
|
Intermittent or Slow Seep Leak | View Details |
| – |
Softener causes air spurting from faucets after regeneration
|
Air Intrusion into Plumbing | View Details |
| – |
Softener causes noticeable drop in water pressure throughout the house
|
Flow Restriction Through Softener | View Details |
| – |
Softener display shows normal operation but water tastes salty after regeneration
|
Residual Brine in Service Water | View Details |
| – |
Softener display works but unit never regenerates automatically
|
No Automatic Regeneration | View Details |
| – |
Softener does not use any salt; salt level never goes down over weeks of operation
|
No Brine Draw / No Salt Consumption | View Details |
| – |
Softener emits rotten egg or musty odor from water
|
Bacterial Growth / Sulfur Odor | View Details |
| – |
Softener frequently loses programming after power outages
|
Inadequate Backup / Memory Retention | View Details |
| – |
Softener leaking water from around the control valve head
|
Control Valve External Leak | View Details |
| – |
Softener makes loud banging or hammering noises during regeneration
|
Water Hammer / Rapid Valve Transition Noise | View Details |
| – |
Softener regenerates at the wrong time of day (e.g., during peak water use)
|
Incorrect Regeneration Time | View Details |
| – |
Softener resin tank makes grinding or scraping noises during regeneration
|
Internal Resin Tank Mechanical Wear | View Details |
| – |
Softener stuck in regeneration; continues to run water to drain and never returns to service
|
Control Valve Stuck in Regeneration | View Details |
| – |
Softener uses excessive salt; salt level drops very quickly
|
High Salt Consumption | View Details |
| – |
Softener uses very little water in brine tank; salt forms a solid mass (bridging)
|
Salt Bridging / Insufficient Brine Refill | View Details |
| – |
Softener will not start at all; display is blank and unit appears dead
|
No Power to Control System | View Details |
| – |
Water remains hard at faucets even though softener appears to run normally
|
No Softening / Hard Water Breakthrough | View Details |
| – |
Water softener brine tank overflowing with water and spilling onto floor
|
Brine Tank Overfill | View Details |
No matching codes found
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