Grünbeck
Grünbeck 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
Display shows E01 and the unit does not start regeneration
Inlet Water Supply Fault
E02
Display shows E02 and regeneration stops shortly after starting
Drain / Brine Discharge Fault
E03
Display shows E03 and the unit remains in service without regenerating
Flow Sensor / Water Meter Fault
E04
Display shows E04 and regeneration cannot be started
Motor Drive / Valve Positioning Fault
E05
Display shows E05 and the unit remains in bypass or emergency mode
Valve Position Not Reached / Positioning Timeout
E06
Display shows E06 and the unit does not measure salt consumption correctly
Brine Level / Salt Sensor Fault
E07
Display shows E07 and regeneration is interrupted during brine draw
Brine Suction / Injector Fault
E08
Display shows E08 and the unit reports a sensor error for raw water hardness
Raw Water Hardness Sensor Fault (if equipped)
E09
Display shows E09 and the unit indicates a treated water hardness sensor fault
Soft Water Hardness Sensor Fault (if equipped)
E10
Display shows E10 and the unit reports an internal temperature error
Control Unit Overtemperature / Temperature Sensor Fault
E11
Display shows E11 and the unit cannot communicate with an external module
Communication Fault (e.g. LAN, Modbus, external sensor bus)
E12
Display shows E12 and the unit indicates a memory or configuration error
EEPROM / Configuration Data Fault
E13
Display shows E13 and the unit reports a power supply fault
Low Voltage / Power Supply Error
E14
Display shows E14 and the unit indicates a timekeeping or clock error
Real-Time Clock / Backup Battery Fault
E15
Display shows E15 and the unit reports an internal leak or water in base tray
Leak Detection / Drip Tray Sensor Alarm
E16
Display shows E16 and the unit indicates an abnormal regeneration duration
Regeneration Time Overrun / Under-run
E17
Display shows E17 and the unit reports a bypass valve fault
Automatic Bypass Valve Position Error
E18
Display shows E18 and the unit indicates an error with the blending (mixing) valve
Blending Valve / Mixing Motor Fault
E19
Display shows E19 and the unit reports a resin capacity or counter error
Capacity Calculation / Counter Fault
E20
Display shows E20 and the unit indicates a dual-column synchronization error (twin system)
Twin Column Synchronization / Communication Fault
Symptom
Brine tank does not refill with water after regeneration
No Brine Tank Refill
Symptom
Brine tank is full of water but salt level does not decrease over time
Salt Mushing / Blocked Brine Draw
Symptom
Brine tank overfills with water or water level is unusually high
Brine Tank Overfill
Symptom
Buttons on the control panel do not respond or respond intermittently
Keypad / Touch Control Fault
Symptom
Display is blank or very dim, but power outlet is live
Display / Control Power Issue
Symptom
No water at taps when the softener is in service mode, but water flows in bypass
Blocked Outlet / Internal Valve Blockage
Symptom
Noticeable water hammer or banging noises in pipes when the softener switches modes
Hydraulic Shock During Valve Switching
Symptom
Salt in the brine tank forms a hard crust or bridge above the water level
Salt Bridging in Brine Tank
Symptom
Softener frequently switches to emergency or bypass mode without showing a specific error code
Intermittent Internal Fault / Safety Mode Activation
Symptom
Unit makes loud clicking or grinding noises during regeneration
Drive Motor / Gear Train Noise
Symptom
Unpleasant odor from softened water
Microbial Growth / Stagnant Water
Symptom
Visible rust or discoloration in softened water
Iron Contamination / Resin Fouling
Symptom
Water remains hard at taps despite the Grünbeck softener running without any error code
Loss of Softening Capacity
Symptom
Water softener does not regenerate at the programmed time
Regeneration Scheduling / Timer Issue
Symptom
Water softener leaks at the inlet or outlet union connections
Union Connection Leak
Symptom
Water softener leaks from the valve head housing
Valve Head Seal Failure
Symptom
Water tastes salty or has elevated sodium content after regeneration
Excessive Brine Carryover
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Display shows E01 and the unit does not start regeneration
|
Inlet Water Supply Fault | View Details |
| E02 |
Display shows E02 and regeneration stops shortly after starting
|
Drain / Brine Discharge Fault | View Details |
| E03 |
Display shows E03 and the unit remains in service without regenerating
|
Flow Sensor / Water Meter Fault | View Details |
| E04 |
Display shows E04 and regeneration cannot be started
|
Motor Drive / Valve Positioning Fault | View Details |
| E05 |
Display shows E05 and the unit remains in bypass or emergency mode
|
Valve Position Not Reached / Positioning Timeout | View Details |
| E06 |
Display shows E06 and the unit does not measure salt consumption correctly
|
Brine Level / Salt Sensor Fault | View Details |
| E07 |
Display shows E07 and regeneration is interrupted during brine draw
|
Brine Suction / Injector Fault | View Details |
| E08 |
Display shows E08 and the unit reports a sensor error for raw water hardness
|
Raw Water Hardness Sensor Fault (if equipped) | View Details |
| E09 |
Display shows E09 and the unit indicates a treated water hardness sensor fault
|
Soft Water Hardness Sensor Fault (if equipped) | View Details |
| E10 |
Display shows E10 and the unit reports an internal temperature error
|
Control Unit Overtemperature / Temperature Sensor Fault | View Details |
| E11 |
Display shows E11 and the unit cannot communicate with an external module
|
Communication Fault (e.g. LAN, Modbus, external sensor bus) | View Details |
| E12 |
Display shows E12 and the unit indicates a memory or configuration error
|
EEPROM / Configuration Data Fault | View Details |
| E13 |
Display shows E13 and the unit reports a power supply fault
|
Low Voltage / Power Supply Error | View Details |
| E14 |
Display shows E14 and the unit indicates a timekeeping or clock error
|
Real-Time Clock / Backup Battery Fault | View Details |
| E15 |
Display shows E15 and the unit reports an internal leak or water in base tray
|
Leak Detection / Drip Tray Sensor Alarm | View Details |
| E16 |
Display shows E16 and the unit indicates an abnormal regeneration duration
|
Regeneration Time Overrun / Under-run | View Details |
| E17 |
Display shows E17 and the unit reports a bypass valve fault
|
Automatic Bypass Valve Position Error | View Details |
| E18 |
Display shows E18 and the unit indicates an error with the blending (mixing) valve
|
Blending Valve / Mixing Motor Fault | View Details |
| E19 |
Display shows E19 and the unit reports a resin capacity or counter error
|
Capacity Calculation / Counter Fault | View Details |
| E20 |
Display shows E20 and the unit indicates a dual-column synchronization error (twin system)
|
Twin Column Synchronization / Communication Fault | View Details |
| – |
Brine tank does not refill with water after regeneration
|
No Brine Tank Refill | View Details |
| – |
Brine tank is full of water but salt level does not decrease over time
|
Salt Mushing / Blocked Brine Draw | View Details |
| – |
Brine tank overfills with water or water level is unusually high
|
Brine Tank Overfill | View Details |
| – |
Buttons on the control panel do not respond or respond intermittently
|
Keypad / Touch Control Fault | View Details |
| – |
Display is blank or very dim, but power outlet is live
|
Display / Control Power Issue | View Details |
| – |
No water at taps when the softener is in service mode, but water flows in bypass
|
Blocked Outlet / Internal Valve Blockage | View Details |
| – |
Noticeable water hammer or banging noises in pipes when the softener switches modes
|
Hydraulic Shock During Valve Switching | View Details |
| – |
Salt in the brine tank forms a hard crust or bridge above the water level
|
Salt Bridging in Brine Tank | View Details |
| – |
Softener frequently switches to emergency or bypass mode without showing a specific error code
|
Intermittent Internal Fault / Safety Mode Activation | View Details |
| – |
Unit makes loud clicking or grinding noises during regeneration
|
Drive Motor / Gear Train Noise | View Details |
| – |
Unpleasant odor from softened water
|
Microbial Growth / Stagnant Water | View Details |
| – |
Visible rust or discoloration in softened water
|
Iron Contamination / Resin Fouling | View Details |
| – |
Water remains hard at taps despite the Grünbeck softener running without any error code
|
Loss of Softening Capacity | View Details |
| – |
Water softener does not regenerate at the programmed time
|
Regeneration Scheduling / Timer Issue | View Details |
| – |
Water softener leaks at the inlet or outlet union connections
|
Union Connection Leak | View Details |
| – |
Water softener leaks from the valve head housing
|
Valve Head Seal Failure | View Details |
| – |
Water tastes salty or has elevated sodium content after regeneration
|
Excessive Brine Carryover | View Details |
No matching codes found
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