Lindsay
Lindsay 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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E1
Control panel displays E1 and softener will not start a regeneration cycle
Inlet Water Supply Fault
E10
E10 displayed and time-of-day clock resets frequently
Clock / Backup Power Fault
E11
E11 error and unit will not accept new programming or buttons are unresponsive
Keypad / User Interface Fault
E12
E12 displayed and regeneration stops midway, requiring manual reset
Cycle Timeout / Stalled Regeneration
E13
E13 error and salt usage is abnormally high compared to water usage
Excessive Regeneration / Meter Calibration Fault
E14
E14 displayed and water remains hard even after recent regeneration
Resin Bed / Capacity Fault
E15
E15 error and brine tank overfills with water after regeneration
Brine Tank Overfill / Float Fault
E16
E16 displayed and unit reports high salt level error or salt sensor fault
Salt Level Sensor Fault
E17
E17 error and unit indicates low salt even when tank is adequately filled
False Low Salt Indication
E18
E18 displayed and unit reports high drain flow or drain leak
Excessive Drain Flow Detection
E19
E19 error and unit indicates communication failure between display and main board
Internal Communication Fault
E2
E2 displayed and unit will not advance through regeneration steps
Motor or Cam Drive Fault
E20
E20 displayed and unit reports temperature sensor fault (on models with inlet temperature monitoring)
Inlet Temperature Sensor Fault
E3
E3 error and softener stuck in one position (often brine draw or backwash)
Position Switch / Encoder Fault
E4
E4 displayed and no water flow is registered on the display even when water is used
Flow Meter / Turbine Signal Loss
E5
E5 error and unit regenerates at incorrect times or not at all
Programming / Memory Fault
E6
E6 displayed and brine tank does not refill with water after regeneration
Brine Refill Valve / Solenoid Fault
E7
E7 error and unit stuck in brine draw, water appears salty at faucets
Brine Draw / Injector Fault
E8
E8 displayed and softener continuously drains water during or after regeneration
Drain Valve Stuck Open
E9
E9 error and display is blank or flickering, unit intermittently shuts off
Low Voltage / Power Supply Fault
Symptom
Brine tank has no water at the bottom and salt level does not drop over time
No Brine Make-Up / Dry Brine Tank
Symptom
Brine tank is full of water or overflows onto the floor
Brine Tank Overfill
Symptom
Buttons on the Lindsay control panel are hard to press or do not respond intermittently
Keypad Wear / Contamination
Symptom
Control display is blank but outlet has power
No Display / Dead Control
Symptom
Drain line drips or flows water constantly even when not regenerating
Internal Bypass to Drain
Symptom
Lindsay softener causes brown or discolored water after regeneration
Iron Discharge / Resin Fouling
Symptom
Lindsay softener causes vibration or rattling in nearby pipes during operation
Water Hammer / Pipe Vibration
Symptom
Lindsay softener does not regenerate at scheduled time (no error displayed)
Regeneration Scheduling / Timer Fault
Symptom
Lindsay softener is noisy during regeneration (loud banging, whistling, or chattering)
Hydraulic Hammer / Valve Noise
Symptom
Lindsay softener leaks water from around the control head or valve body
Valve Head External Leak
Symptom
Lindsay softener stuck in regeneration and does not return to service automatically
Cycle Stalling / Cam Jam
Symptom
Lindsay softener will not draw brine from the brine tank during regeneration
No Brine Draw
Symptom
Salt level in brine tank does not go down even after multiple regenerations
Salt Bridging / Salt Mushing
Symptom
Softener appears to be in bypass (water is hard) even though bypass handles are in service position
Internal Bypass Leakage
Symptom
Softener emits a foul or rotten-egg odor from the brine tank or during regeneration
Bacterial Growth / Odor Contamination
Symptom
Softener never regenerates on demand even with high water usage
Under-Regeneration / Meter Not Counting
Symptom
Softener regenerates too often, even with low water usage
Over-Regeneration / Meter Miscount
Symptom
Water has a salty taste at faucets after regeneration
Residual Brine Carryover
Symptom
Water leaks from the base of the mineral (resin) tank
Resin Tank Structural Leak
Symptom
Water pressure drops significantly when water flows through the Lindsay softener
Flow Restriction Through Valve or Resin Bed
Symptom
Water remains hard at faucets even though the Lindsay softener appears to run normally (no error code)
Resin Exhaustion / Ineffective Softening
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Control panel displays E1 and softener will not start a regeneration cycle
|
Inlet Water Supply Fault | View Details |
| E10 |
E10 displayed and time-of-day clock resets frequently
|
Clock / Backup Power Fault | View Details |
| E11 |
E11 error and unit will not accept new programming or buttons are unresponsive
|
Keypad / User Interface Fault | View Details |
| E12 |
E12 displayed and regeneration stops midway, requiring manual reset
|
Cycle Timeout / Stalled Regeneration | View Details |
| E13 |
E13 error and salt usage is abnormally high compared to water usage
|
Excessive Regeneration / Meter Calibration Fault | View Details |
| E14 |
E14 displayed and water remains hard even after recent regeneration
|
Resin Bed / Capacity Fault | View Details |
| E15 |
E15 error and brine tank overfills with water after regeneration
|
Brine Tank Overfill / Float Fault | View Details |
| E16 |
E16 displayed and unit reports high salt level error or salt sensor fault
|
Salt Level Sensor Fault | View Details |
| E17 |
E17 error and unit indicates low salt even when tank is adequately filled
|
False Low Salt Indication | View Details |
| E18 |
E18 displayed and unit reports high drain flow or drain leak
|
Excessive Drain Flow Detection | View Details |
| E19 |
E19 error and unit indicates communication failure between display and main board
|
Internal Communication Fault | View Details |
| E2 |
E2 displayed and unit will not advance through regeneration steps
|
Motor or Cam Drive Fault | View Details |
| E20 |
E20 displayed and unit reports temperature sensor fault (on models with inlet temperature monitoring)
|
Inlet Temperature Sensor Fault | View Details |
| E3 |
E3 error and softener stuck in one position (often brine draw or backwash)
|
Position Switch / Encoder Fault | View Details |
| E4 |
E4 displayed and no water flow is registered on the display even when water is used
|
Flow Meter / Turbine Signal Loss | View Details |
| E5 |
E5 error and unit regenerates at incorrect times or not at all
|
Programming / Memory Fault | View Details |
| E6 |
E6 displayed and brine tank does not refill with water after regeneration
|
Brine Refill Valve / Solenoid Fault | View Details |
| E7 |
E7 error and unit stuck in brine draw, water appears salty at faucets
|
Brine Draw / Injector Fault | View Details |
| E8 |
E8 displayed and softener continuously drains water during or after regeneration
|
Drain Valve Stuck Open | View Details |
| E9 |
E9 error and display is blank or flickering, unit intermittently shuts off
|
Low Voltage / Power Supply Fault | View Details |
| – |
Brine tank has no water at the bottom and salt level does not drop over time
|
No Brine Make-Up / Dry Brine Tank | View Details |
| – |
Brine tank is full of water or overflows onto the floor
|
Brine Tank Overfill | View Details |
| – |
Buttons on the Lindsay control panel are hard to press or do not respond intermittently
|
Keypad Wear / Contamination | View Details |
| – |
Control display is blank but outlet has power
|
No Display / Dead Control | View Details |
| – |
Drain line drips or flows water constantly even when not regenerating
|
Internal Bypass to Drain | View Details |
| – |
Lindsay softener causes brown or discolored water after regeneration
|
Iron Discharge / Resin Fouling | View Details |
| – |
Lindsay softener causes vibration or rattling in nearby pipes during operation
|
Water Hammer / Pipe Vibration | View Details |
| – |
Lindsay softener does not regenerate at scheduled time (no error displayed)
|
Regeneration Scheduling / Timer Fault | View Details |
| – |
Lindsay softener is noisy during regeneration (loud banging, whistling, or chattering)
|
Hydraulic Hammer / Valve Noise | View Details |
| – |
Lindsay softener leaks water from around the control head or valve body
|
Valve Head External Leak | View Details |
| – |
Lindsay softener stuck in regeneration and does not return to service automatically
|
Cycle Stalling / Cam Jam | View Details |
| – |
Lindsay softener will not draw brine from the brine tank during regeneration
|
No Brine Draw | View Details |
| – |
Salt level in brine tank does not go down even after multiple regenerations
|
Salt Bridging / Salt Mushing | View Details |
| – |
Softener appears to be in bypass (water is hard) even though bypass handles are in service position
|
Internal Bypass Leakage | View Details |
| – |
Softener emits a foul or rotten-egg odor from the brine tank or during regeneration
|
Bacterial Growth / Odor Contamination | View Details |
| – |
Softener never regenerates on demand even with high water usage
|
Under-Regeneration / Meter Not Counting | View Details |
| – |
Softener regenerates too often, even with low water usage
|
Over-Regeneration / Meter Miscount | View Details |
| – |
Water has a salty taste at faucets after regeneration
|
Residual Brine Carryover | View Details |
| – |
Water leaks from the base of the mineral (resin) tank
|
Resin Tank Structural Leak | View Details |
| – |
Water pressure drops significantly when water flows through the Lindsay softener
|
Flow Restriction Through Valve or Resin Bed | View Details |
| – |
Water remains hard at faucets even though the Lindsay softener appears to run normally (no error code)
|
Resin Exhaustion / Ineffective Softening | View Details |
No matching codes found
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