Whirlpool 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
Display shows E1 and buttons do not respond properly
Keypad or User Interface Failure
E2
Display shows E2 and unit loses programming or resets randomly
Non-Volatile Memory or Power Interruption Error
E3
Display shows E3 and regeneration stops at the same step every time
Cam/Position Encoder or Motor Stall
E4
Display shows E4 and water usage is not recorded (no gallons counted)
Flow Meter Signal Error
E5
Display shows E5 and unit will not enter regeneration when commanded
Regeneration Start Circuit or Motor Drive Error
E6
Display shows E6 and unit regenerates at incorrect times
Time-of-Day or Regeneration Schedule Error
E7
Display shows E7 and unit skips regeneration cycles
Demand Signal or Capacity Calculation Error
ERR1
Display shows ERR1 and softener will not start a regeneration cycle
Motor or Valve Position Switch Failure
ERR2
Display shows ERR2 and unit stops mid-regeneration
Brine Valve or Brine System Failure
ERR3
Display shows ERR3 and regeneration will not complete
Turbine/Flow Sensor Failure
ERR4
Display shows ERR4 and softener does not meter water usage correctly
Control Board Flow Meter Circuit Error
ERR5
Display shows ERR5 and unit will not initiate regeneration
Program Memory or Configuration Error
ERR6
Display shows ERR6 and time-of-day clock does not keep time
Clock or Power Supply Failure
ERR7
Display shows ERR7 and unit displays incorrect salt level or usage
Salt Level or Sensor Input Error
H0
Display shows H0 or 0 hardness and water feels slippery/over-softened
Hardness Setting or Sensor Misconfiguration
H99
Display shows maximum hardness (e.g., H99) and water remains hard after regeneration
Hardness Setting or Resin Capacity Issue
Lo
Display shows Lo or Low Salt warning frequently
Low Salt Level or Sensor Alert
Symptom
Brine tank overflows with water during or after regeneration
Brine Refill or Float Safety Failure
Symptom
Buttons on control panel are unresponsive or intermittent
Keypad Contact Failure
Symptom
Drain line continuously trickles water even when not regenerating
Control Valve Not Sealing to Drain
Symptom
No water flow to house when softener is in service position
Blocked Control Valve or Plumbing Restriction
Symptom
Softener causes air spurting or sputtering at 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 is blank but outlet has power
No Display / Control Power Failure
Symptom
Softener does not draw brine during regeneration (water level in brine tank does not drop)
No Brine Suction
Symptom
Softener does not regenerate automatically (only works when manually started)
Automatic Regeneration Control Failure
Symptom
Softener emits burning smell or control head feels unusually hot
Overheating Electrical Component
Symptom
Softener installed but water is not softened from day one
Installation or Plumbing Configuration Error
Symptom
Softener leaking water from around the control valve head
Valve Head or O-Ring Seal Leak
Symptom
Softener makes loud clicking or grinding noises during regeneration
Gear Train or Motor Noise
Symptom
Softener never regenerates (no cycles at all, even over weeks)
Regeneration Inhibition or Control Failure
Symptom
Softener regenerates too frequently (every day or multiple times per day)
Over-Regeneration / Incorrect Capacity Settings
Symptom
Softener stuck in regeneration and does not return to service mode
Control Valve Indexing Failure
Symptom
Softener uses too much salt (salt level drops very quickly)
Excessive Brine Refill or Over-Regeneration
Symptom
Softener uses very little or no salt (salt level never seems to drop)
No Brine Draw or Refill
Symptom
Water has salty taste after regeneration
Excess Brine Carryover
Symptom
Water leaking from brine tank or around brine well
Brine Tank or Brine Line Leak
Symptom
Water remains hard even after the softener regenerates
Ineffective Ion Exchange / Resin Exhaustion
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Display shows E1 and buttons do not respond properly
|
Keypad or User Interface Failure | View Details |
| E2 |
Display shows E2 and unit loses programming or resets randomly
|
Non-Volatile Memory or Power Interruption Error | View Details |
| E3 |
Display shows E3 and regeneration stops at the same step every time
|
Cam/Position Encoder or Motor Stall | View Details |
| E4 |
Display shows E4 and water usage is not recorded (no gallons counted)
|
Flow Meter Signal Error | View Details |
| E5 |
Display shows E5 and unit will not enter regeneration when commanded
|
Regeneration Start Circuit or Motor Drive Error | View Details |
| E6 |
Display shows E6 and unit regenerates at incorrect times
|
Time-of-Day or Regeneration Schedule Error | View Details |
| E7 |
Display shows E7 and unit skips regeneration cycles
|
Demand Signal or Capacity Calculation Error | View Details |
| ERR1 |
Display shows ERR1 and softener will not start a regeneration cycle
|
Motor or Valve Position Switch Failure | View Details |
| ERR2 |
Display shows ERR2 and unit stops mid-regeneration
|
Brine Valve or Brine System Failure | View Details |
| ERR3 |
Display shows ERR3 and regeneration will not complete
|
Turbine/Flow Sensor Failure | View Details |
| ERR4 |
Display shows ERR4 and softener does not meter water usage correctly
|
Control Board Flow Meter Circuit Error | View Details |
| ERR5 |
Display shows ERR5 and unit will not initiate regeneration
|
Program Memory or Configuration Error | View Details |
| ERR6 |
Display shows ERR6 and time-of-day clock does not keep time
|
Clock or Power Supply Failure | View Details |
| ERR7 |
Display shows ERR7 and unit displays incorrect salt level or usage
|
Salt Level or Sensor Input Error | View Details |
| H0 |
Display shows H0 or 0 hardness and water feels slippery/over-softened
|
Hardness Setting or Sensor Misconfiguration | View Details |
| H99 |
Display shows maximum hardness (e.g., H99) and water remains hard after regeneration
|
Hardness Setting or Resin Capacity Issue | View Details |
| Lo |
Display shows Lo or Low Salt warning frequently
|
Low Salt Level or Sensor Alert | View Details |
| – |
Brine tank overflows with water during or after regeneration
|
Brine Refill or Float Safety Failure | View Details |
| – |
Buttons on control panel are unresponsive or intermittent
|
Keypad Contact Failure | View Details |
| – |
Drain line continuously trickles water even when not regenerating
|
Control Valve Not Sealing to Drain | View Details |
| – |
No water flow to house when softener is in service position
|
Blocked Control Valve or Plumbing Restriction | View Details |
| – |
Softener causes air spurting or sputtering at 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 is blank but outlet has power
|
No Display / Control Power Failure | View Details |
| – |
Softener does not draw brine during regeneration (water level in brine tank does not drop)
|
No Brine Suction | View Details |
| – |
Softener does not regenerate automatically (only works when manually started)
|
Automatic Regeneration Control Failure | View Details |
| – |
Softener emits burning smell or control head feels unusually hot
|
Overheating Electrical Component | View Details |
| – |
Softener installed but water is not softened from day one
|
Installation or Plumbing Configuration Error | View Details |
| – |
Softener leaking water from around the control valve head
|
Valve Head or O-Ring Seal Leak | View Details |
| – |
Softener makes loud clicking or grinding noises during regeneration
|
Gear Train or Motor Noise | View Details |
| – |
Softener never regenerates (no cycles at all, even over weeks)
|
Regeneration Inhibition or Control Failure | View Details |
| – |
Softener regenerates too frequently (every day or multiple times per day)
|
Over-Regeneration / Incorrect Capacity Settings | View Details |
| – |
Softener stuck in regeneration and does not return to service mode
|
Control Valve Indexing Failure | View Details |
| – |
Softener uses too much salt (salt level drops very quickly)
|
Excessive Brine Refill or Over-Regeneration | View Details |
| – |
Softener uses very little or no salt (salt level never seems to drop)
|
No Brine Draw or Refill | View Details |
| – |
Water has salty taste after regeneration
|
Excess Brine Carryover | View Details |
| – |
Water leaking from brine tank or around brine well
|
Brine Tank or Brine Line Leak | View Details |
| – |
Water remains hard even after the softener regenerates
|
Ineffective Ion Exchange / Resin Exhaustion | View Details |
No matching codes found
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