Aqua Dial
Aqua Dial 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 the softener will not start a regeneration cycle.
Inlet Water Supply Fault
E02
Display shows E02, and the unit does not draw brine during regeneration.
Brine Suction / Injector Blockage
E03
E03 is displayed, and the softener is stuck in regeneration or will not advance through cycles.
Motor / Cam Drive Fault
E04
E04 error is displayed, and the unit shows incorrect time or loses settings frequently.
Control Board / Memory Fault
E05
E05 is displayed, and the unit does not detect water flow or does not meter usage.
Flow Meter / Turbine Sensor Fault
E06
E06 error is displayed, and the softener regenerates at incorrect times or too frequently.
Programming / Parameter Error
E07
E07 is displayed, and the unit will not initiate regeneration when expected.
Regeneration Start Failure
E08
E08 error is displayed, and the display is blank or very dim; the unit appears dead.
Low Voltage / Power Supply Fault
E09
E09 is displayed, and the unit overfills the brine tank or floods during refill.
Brine Refill Control Fault
E10
E10 error is displayed, and the unit drains continuously or for excessively long periods.
Drain Valve / Piston Seal Fault
E11
E11 is displayed, and the unit reports a salt level or brine sensor fault (on models with a sensor).
Salt Level / Brine Sensor Fault
E12
E12 error is displayed, and the unit indicates a drain line or backwash flow problem.
Drain Line / Backwash Flow Restriction
E13
E13 is displayed, and the unit reports an internal leak or valve position error.
Internal Bypass / Cross-Leak Fault
E14
E14 error is displayed, and the unit indicates a high flow or leak alarm (on models with leak detection).
Continuous Flow / Leak Detection Alarm
E15
E15 is displayed, and the unit indicates a sensor communication or bus error.
Communication Fault Between Control Board and Sensors
E16
E16 error is displayed, and the unit reports a temperature or environment fault (on models with a temperature sensor).
Ambient / Water Temperature Sensor Fault
E17
E17 is displayed, and the unit indicates a resin tank pressure or safety fault (on models with a pressure switch).
Overpressure / Safety Switch Activation
E18
E18 error is displayed, and the unit indicates a bypass valve position fault (on models with electronic bypass feedback).
Bypass Position Detection Fault
E19
E19 is displayed, and the unit indicates an internal clock or battery backup fault (on models with backup).
Real-Time Clock / Backup Power Fault
E20
E20 error is displayed, and the unit indicates a general system fault requiring service.
General System Error / Self-Test Failure
Symptom
Brine tank full of water or water level unusually high.
Brine Tank Overfill
Symptom
Display is on, but buttons do not respond or are intermittent.
Keypad / User Interface Fault
Symptom
No water in brine tank; salt sits dry at the bottom.
No Brine Refill
Symptom
Salt forms a hard crust (bridge) in the brine tank, and the water level stays low underneath.
Salt Bridging
Symptom
Salt turns to mush or sludge at the bottom of the brine tank
Salt Mushing
Symptom
Softener appears to regenerate but water remains hard immediately afterwards
Incomplete or Ineffective Regeneration
Symptom
Softener causes a noticeable drop in water pressure throughout the house.
Flow Restriction Through Softener
Symptom
Softener does not start at all after installation or a power outage.
Initial Start-Up / Power-On Failure
Symptom
Softener emits a constant humming or buzzing from the control head.
Transformer / Motor Hum
Symptom
Softener installed, but water is always hard, as if bypassed.
Incorrect Plumbing / Bypass Misconfiguration
Symptom
Softener leaks 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 Operation Noise
Symptom
Softener regenerates at the wrong time of day
Clock / Time Setting Issue
Symptom
Softener stuck in bypass and cannot be returned to service
Bypass Valve Mechanical Failure
Symptom
Softener uses excessive salt and regenerates more often than expected.
Over-Regeneration / High Salt Consumption
Symptom
The softener uses very little or no salt over several weeks.
No Brine Draw / No Regeneration Salt Usage
Symptom
Water has a salty taste after the softener.
Residual Brine Carryover
Symptom
Water leaking from brine tank or around brine well.
Brine Tank Leak
Symptom
Water remains hard at taps even though the Aqua Dial softener appears to run normally.
Resin Exhaustion / Resin Fouling
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Control panel shows E01, and the softener will not start a regeneration cycle.
|
Inlet Water Supply Fault | View Details |
| E02 |
Display shows E02, and the unit does not draw brine during regeneration.
|
Brine Suction / Injector Blockage | View Details |
| E03 |
E03 is displayed, and the softener is stuck in regeneration or will not advance through cycles.
|
Motor / Cam Drive Fault | View Details |
| E04 |
E04 error is displayed, and the unit shows incorrect time or loses settings frequently.
|
Control Board / Memory Fault | View Details |
| E05 |
E05 is displayed, and the unit does not detect water flow or does not meter usage.
|
Flow Meter / Turbine Sensor Fault | View Details |
| E06 |
E06 error is displayed, and the softener regenerates at incorrect times or too frequently.
|
Programming / Parameter Error | View Details |
| E07 |
E07 is displayed, and the unit will not initiate regeneration when expected.
|
Regeneration Start Failure | View Details |
| E08 |
E08 error is displayed, and the display is blank or very dim; the unit appears dead.
|
Low Voltage / Power Supply Fault | View Details |
| E09 |
E09 is displayed, and the unit overfills the brine tank or floods during refill.
|
Brine Refill Control Fault | View Details |
| E10 |
E10 error is displayed, and the unit drains continuously or for excessively long periods.
|
Drain Valve / Piston Seal Fault | View Details |
| E11 |
E11 is displayed, and the unit reports a salt level or brine sensor fault (on models with a sensor).
|
Salt Level / Brine Sensor Fault | View Details |
| E12 |
E12 error is displayed, and the unit indicates a drain line or backwash flow problem.
|
Drain Line / Backwash Flow Restriction | View Details |
| E13 |
E13 is displayed, and the unit reports an internal leak or valve position error.
|
Internal Bypass / Cross-Leak Fault | View Details |
| E14 |
E14 error is displayed, and the unit indicates a high flow or leak alarm (on models with leak detection).
|
Continuous Flow / Leak Detection Alarm | View Details |
| E15 |
E15 is displayed, and the unit indicates a sensor communication or bus error.
|
Communication Fault Between Control Board and Sensors | View Details |
| E16 |
E16 error is displayed, and the unit reports a temperature or environment fault (on models with a temperature sensor).
|
Ambient / Water Temperature Sensor Fault | View Details |
| E17 |
E17 is displayed, and the unit indicates a resin tank pressure or safety fault (on models with a pressure switch).
|
Overpressure / Safety Switch Activation | View Details |
| E18 |
E18 error is displayed, and the unit indicates a bypass valve position fault (on models with electronic bypass feedback).
|
Bypass Position Detection Fault | View Details |
| E19 |
E19 is displayed, and the unit indicates an internal clock or battery backup fault (on models with backup).
|
Real-Time Clock / Backup Power Fault | View Details |
| E20 |
E20 error is displayed, and the unit indicates a general system fault requiring service.
|
General System Error / Self-Test Failure | View Details |
| – |
Brine tank full of water or water level unusually high.
|
Brine Tank Overfill | View Details |
| – |
Display is on, but buttons do not respond or are intermittent.
|
Keypad / User Interface Fault | View Details |
| – |
No water in brine tank; salt sits dry at the bottom.
|
No Brine Refill | View Details |
| – |
Salt forms a hard crust (bridge) in the brine tank, and the water level stays low underneath.
|
Salt Bridging | View Details |
| – |
Salt turns to mush or sludge at the bottom of the brine tank
|
Salt Mushing | View Details |
| – |
Softener appears to regenerate but water remains hard immediately afterwards
|
Incomplete or Ineffective Regeneration | View Details |
| – |
Softener causes a noticeable drop in water pressure throughout the house.
|
Flow Restriction Through Softener | View Details |
| – |
Softener does not start at all after installation or a power outage.
|
Initial Start-Up / Power-On Failure | View Details |
| – |
Softener emits a constant humming or buzzing from the control head.
|
Transformer / Motor Hum | View Details |
| – |
Softener installed, but water is always hard, as if bypassed.
|
Incorrect Plumbing / Bypass Misconfiguration | View Details |
| – |
Softener leaks 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 Operation Noise | View Details |
| – |
Softener regenerates at the wrong time of day
|
Clock / Time Setting Issue | View Details |
| – |
Softener stuck in bypass and cannot be returned to service
|
Bypass Valve Mechanical Failure | View Details |
| – |
Softener uses excessive salt and regenerates more often than expected.
|
Over-Regeneration / High Salt Consumption | View Details |
| – |
The softener uses very little or no salt over several weeks.
|
No Brine Draw / No Regeneration Salt Usage | View Details |
| – |
Water has a salty taste after the softener.
|
Residual Brine Carryover | View Details |
| – |
Water leaking from brine tank or around brine well.
|
Brine Tank Leak | View Details |
| – |
Water remains hard at taps even though the Aqua Dial softener appears to run normally.
|
Resin Exhaustion / Resin Fouling | View Details |
No matching codes found
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