AquaHouse
AquaHouse 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 fails to draw brine during regeneration.
Brine Draw / Injector Fault
E03
E03 appears and the softener stops mid-cycle, often during backwash or rinse.
Motor / Cam Drive Fault
E04
E04 error and the display shows incorrect time or settings after power interruptions.
Control Board / Memory Fault
E05
E05 displayed and the unit does not detect water flow even when taps are open.
Flow Sensor Signal Fault
E06
E06 error and the softener regenerates at incorrect intervals or not at all based on usage.
Metered Regeneration Logic Fault
E07
E07 displayed and the brine tank overfills with water after regeneration.
Brine Refill / Float Safety Fault
E08
E08 error and the display shows abnormal temperature or shuts down in very cold or hot environments.
Temperature Sensor Fault
E09
E09 displayed and the softener skips scheduled regenerations or regenerates at random times.
Real-Time Clock / Scheduling Fault
E10
E10 error and the display is blank or flickers while the unit is plugged in.
Low Voltage / Power Supply Fault
E11
E11 displayed and the softener remains in regeneration mode indefinitely or fails to return to service.
Position Switch / Encoder Fault
E12
E12 error and the unit reports excessive regeneration frequency or salt usage.
Excessive Regeneration / Overrun Fault
E13
E13 displayed and the unit reports low salt even when the brine tank contains salt.
Salt Level Sensor Fault
E14
E14 error and the softener reports high internal pressure or shuts down during regeneration.
High Pressure / Backpressure Fault
E15
E15 displayed and the unit indicates a resin tank sensor or safety fault.
Resin Tank Pressure / Level Sensor Fault
E16
E16 error and the softener reports a communication failure between display and main board.
Display / Interface Communication Fault
E17
E17 displayed and the unit indicates a drain valve or exhaust valve malfunction.
Drain Valve Actuation Fault
E18
E18 error and the unit reports a brine tank over-salt or compaction condition.
Salt Compaction / Overfill Detection Fault
E19
E19 displayed and the unit indicates a resin exhaustion or capacity calculation error.
Resin Capacity / Exhaustion Fault
E20
E20 error and the unit indicates an internal leak or continuous flow when no water is being used.
Internal Bypass / Valve Leak Fault
Symptom
AquaHouse softener stuck in regeneration; water to the house is hard or off, and the valve does not return to service.
Regeneration Stuck / Incomplete Cycle
Symptom
AquaHouse softener will not start a regeneration cycle automatically; only manual regeneration works.
Automatic Regeneration Scheduling Failure
Symptom
Brine tank contains a thick, muddy sludge at the bottom and emits a foul odor.
Brine Tank Contamination
Symptom
Brine tank does not refill with water after regeneration; salt remains dry.
No Brine Refill
Symptom
Brine tank fills with water and overflows onto the floor after one or more regenerations.
Brine Tank Overfill
Symptom
Brine tank full of water but salt level does not drop over time; salt appears to form a hard crust.
Salt Bridging
Symptom
Control panel buttons on the AquaHouse softener are unresponsive or require excessive force.
Keypad / User Interface Failure
Symptom
Softened water feels hard; white scale on fixtures even though the AquaHouse softener appears to run normally and no error code is shown.
Loss of Softening Capacity
Symptom
Softener appears to regenerate too often, sometimes daily, even with moderate water use.
Over-Frequent Regeneration
Symptom
Softener causes a loud banging or hammering noise in the pipes during regeneration.
Water Hammer / Rapid Valve Transition
Symptom
Softener causes noticeable drop in water pressure throughout the house when in service.
Flow Restriction Through Softener
Symptom
Softener discharges resin beads into household plumbing; small amber beads appear in faucet aerators and fixtures.
Resin Loss into Plumbing
Symptom
Softener does not power on at all; display is blank and unresponsive.
No Power Condition
Symptom
Softener emits a constant humming or buzzing noise from the control head even when not regenerating.
Transformer / Motor Hum
Symptom
Softener emits a rotten egg or musty odor in the softened water.
Bacterial Contamination / Sulfur Odor
Symptom
Softener installed but water remains hard because the plumbing is incorrectly connected.
Cross-Connection / Incorrect Plumbing
Symptom
Softener never regenerates unless manually started, even though water usage is high.
Under-Regeneration / Meter Not Counting
Symptom
Softener produces salty-tasting water immediately after regeneration.
Insufficient Rinse / Brine Carryover
Symptom
Softener regenerates at the wrong time of day, such as during peak water usage.
Incorrect Regeneration Time
Symptom
Water leaking from the drain line continuously even when the softener is in service mode.
Drain Valve Not Sealing
Symptom
Water softener leaks from around the control head where it mounts to the resin tank.
Control Valve to Tank O-Ring Leak
| 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 fails to draw brine during regeneration.
|
Brine Draw / Injector Fault | View Details |
| E03 |
E03 appears and the softener stops mid-cycle, often during backwash or rinse.
|
Motor / Cam Drive Fault | View Details |
| E04 |
E04 error and the display shows incorrect time or settings after power interruptions.
|
Control Board / Memory Fault | View Details |
| E05 |
E05 displayed and the unit does not detect water flow even when taps are open.
|
Flow Sensor Signal Fault | View Details |
| E06 |
E06 error and the softener regenerates at incorrect intervals or not at all based on usage.
|
Metered Regeneration Logic Fault | View Details |
| E07 |
E07 displayed and the brine tank overfills with water after regeneration.
|
Brine Refill / Float Safety Fault | View Details |
| E08 |
E08 error and the display shows abnormal temperature or shuts down in very cold or hot environments.
|
Temperature Sensor Fault | View Details |
| E09 |
E09 displayed and the softener skips scheduled regenerations or regenerates at random times.
|
Real-Time Clock / Scheduling Fault | View Details |
| E10 |
E10 error and the display is blank or flickers while the unit is plugged in.
|
Low Voltage / Power Supply Fault | View Details |
| E11 |
E11 displayed and the softener remains in regeneration mode indefinitely or fails to return to service.
|
Position Switch / Encoder Fault | View Details |
| E12 |
E12 error and the unit reports excessive regeneration frequency or salt usage.
|
Excessive Regeneration / Overrun Fault | View Details |
| E13 |
E13 displayed and the unit reports low salt even when the brine tank contains salt.
|
Salt Level Sensor Fault | View Details |
| E14 |
E14 error and the softener reports high internal pressure or shuts down during regeneration.
|
High Pressure / Backpressure Fault | View Details |
| E15 |
E15 displayed and the unit indicates a resin tank sensor or safety fault.
|
Resin Tank Pressure / Level Sensor Fault | View Details |
| E16 |
E16 error and the softener reports a communication failure between display and main board.
|
Display / Interface Communication Fault | View Details |
| E17 |
E17 displayed and the unit indicates a drain valve or exhaust valve malfunction.
|
Drain Valve Actuation Fault | View Details |
| E18 |
E18 error and the unit reports a brine tank over-salt or compaction condition.
|
Salt Compaction / Overfill Detection Fault | View Details |
| E19 |
E19 displayed and the unit indicates a resin exhaustion or capacity calculation error.
|
Resin Capacity / Exhaustion Fault | View Details |
| E20 |
E20 error and the unit indicates an internal leak or continuous flow when no water is being used.
|
Internal Bypass / Valve Leak Fault | View Details |
| – |
AquaHouse softener stuck in regeneration; water to the house is hard or off, and the valve does not return to service.
|
Regeneration Stuck / Incomplete Cycle | View Details |
| – |
AquaHouse softener will not start a regeneration cycle automatically; only manual regeneration works.
|
Automatic Regeneration Scheduling Failure | View Details |
| – |
Brine tank contains a thick, muddy sludge at the bottom and emits a foul odor.
|
Brine Tank Contamination | View Details |
| – |
Brine tank does not refill with water after regeneration; salt remains dry.
|
No Brine Refill | View Details |
| – |
Brine tank fills with water and overflows onto the floor after one or more regenerations.
|
Brine Tank Overfill | View Details |
| – |
Brine tank full of water but salt level does not drop over time; salt appears to form a hard crust.
|
Salt Bridging | View Details |
| – |
Control panel buttons on the AquaHouse softener are unresponsive or require excessive force.
|
Keypad / User Interface Failure | View Details |
| – |
Softened water feels hard; white scale on fixtures even though the AquaHouse softener appears to run normally and no error code is shown.
|
Loss of Softening Capacity | View Details |
| – |
Softener appears to regenerate too often, sometimes daily, even with moderate water use.
|
Over-Frequent Regeneration | View Details |
| – |
Softener causes a loud banging or hammering noise in the pipes during regeneration.
|
Water Hammer / Rapid Valve Transition | View Details |
| – |
Softener causes noticeable drop in water pressure throughout the house when in service.
|
Flow Restriction Through Softener | View Details |
| – |
Softener discharges resin beads into household plumbing; small amber beads appear in faucet aerators and fixtures.
|
Resin Loss into Plumbing | View Details |
| – |
Softener does not power on at all; display is blank and unresponsive.
|
No Power Condition | View Details |
| – |
Softener emits a constant humming or buzzing noise from the control head even when not regenerating.
|
Transformer / Motor Hum | View Details |
| – |
Softener emits a rotten egg or musty odor in the softened water.
|
Bacterial Contamination / Sulfur Odor | View Details |
| – |
Softener installed but water remains hard because the plumbing is incorrectly connected.
|
Cross-Connection / Incorrect Plumbing | View Details |
| – |
Softener never regenerates unless manually started, even though water usage is high.
|
Under-Regeneration / Meter Not Counting | View Details |
| – |
Softener produces salty-tasting water immediately after regeneration.
|
Insufficient Rinse / Brine Carryover | View Details |
| – |
Softener regenerates at the wrong time of day, such as during peak water usage.
|
Incorrect Regeneration Time | View Details |
| – |
Water leaking from the drain line continuously even when the softener is in service mode.
|
Drain Valve Not Sealing | View Details |
| – |
Water softener leaks from around the control head where it mounts to the resin tank.
|
Control Valve to Tank O-Ring Leak | View Details |
No matching codes found
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