Idrobase Water Softeners Error Codes

E01

Controller displays E01 and the softener does not start regeneration cycle

Inlet Water Supply / Flow Sensor Fault

E02

Display shows E02 and regeneration stops shortly after starting

Brine Tank Level / Brine Draw Fault

E03

E03 error and motor attempts to move valve but stops with clicking noise

Control Valve Motor / Cam Position Fault

E04

Display shows E04 and unit remains in service mode without regenerating

Flow Meter Signal Loss During Service

E05

E05 error appears and regeneration stops in mid-cycle

Drain Line / Backwash Discharge Fault

E06

E06 error and display beeps; no water softening occurs

Resin Tank Pressure / Overpressure Fault

E07

E07 error and unit stuck in regeneration position

Piston / Rotor Travel Fault

E08

E08 error and controller does not respond to keypad presses

Keypad / User Interface Fault

E09

E09 error and time/capacity settings reset unexpectedly

Power Supply / Memory Backup Fault

E10

E10 error and no water flows through the softener during service

Bypass / Service Position Fault

E11

E11 error and water remains hard even after regeneration

Capacity / Hardness Sensor Fault (if equipped)

E12

E12 error and regeneration occurs too frequently or not at all

Programming / Parameter Configuration Fault

E13

E13 error and brine tank overfills with water

Brine Refill / Safety Float Fault

E14

E14 error and unit displays abnormal temperature warning

Temperature Sensor Fault

E15

E15 error and controller does not power up or randomly reboots

Main Control Board Fault

E16

E16 error and motor does not run during regeneration

Motor Drive Circuit Fault

E17

E17 error and unit indicates communication failure between display and main board

Internal Communication Bus Fault

E18

E18 error and unit logs excessive regeneration time

Regeneration Timeout Fault

E19

E19 error and unit indicates low salt condition even when salt is present

Salt Level Detection Fault (if equipped)

E20

E20 error and unit reports leak or continuous flow when no water is used

Leak Detection / Continuous Flow Fault

Symptom

Brine is not being drawn from the brine tank during regeneration (water level does not drop)

No Brine Draw

Symptom

Brine tank does not refill with water after regeneration

No Brine Refill

Symptom

Brine tank overflows or has very high water level without any error code

Brine Tank Overfill

Symptom

Softener causes noticeable drop in water pressure throughout the house

High Pressure Drop Across Softener

Symptom

Softener cycles between service and regeneration unexpectedly during the day

Unintended or Nuisance Regenerations

Symptom

Softener display is blank but unit still passes water

Display Power / Backlight Failure

Symptom

Softener does not start regeneration at the programmed time (no error displayed)

Regeneration Not Initiating

Symptom

Softener emits unusual odors (musty, rotten, or chemical smell) from treated water

Biological or Chemical Contamination in Resin Bed

Symptom

Softener frequently loses time and settings after power outages

Insufficient Memory Backup

Symptom

Softener head is warm or hot to the touch

Overheating of Control Valve or Electronics

Symptom

Softener head or surrounding area shows signs of corrosion or rust

Environmental / Chemical Damage to Components

Symptom

Softener tank appears deformed or bulging

Structural Tank Stress / Overpressure

Symptom

Softener uses salt much faster than expected

Excessive Salt Consumption

Symptom

Softener uses very little or no salt over time

Insufficient Salt Usage / Under-Regeneration

Symptom

Water has a salty taste after regeneration

Residual Brine in Service Water

Symptom

Water remains hard at taps even though the Idrobase softener appears to run normally (no error code)

Loss of Softening Capacity

Symptom

Water softener is noisy during regeneration (loud banging, whistling, or humming)

Hydraulic Noise / Water Hammer

Symptom

Water softener leaks from around the control valve or tank connections

External Water Leak at Valve/Tank Joint