Kospel
Kospel Water Heaters Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Water heater does not start heating; display shows E01 immediately after power-on.
Flow Sensor / Flow Switch Fault
E02
Heater stops heating and displays E02; unit may attempt to start and then shut down quickly.
Outlet Temperature Sensor (NTC) Fault
E03
Display shows E03 and heater does not operate; may occur after a power surge or wiring work.
Inlet Temperature Sensor (NTC) Fault
E04
Heater shuts down with E04; may occur during long draws of hot water, sometimes accompanied by very hot outlet temperature.
Overheat / Safety Thermostat Trip
E05
Display shows E05 and heater will not start; may appear after dry firing or air in the system.
Overheat Sensor / Thermal Fuse Fault
E06
Heater displays E06; unit may power on but will not heat.
Heating Element Circuit Fault
E07
Display shows E07; heater may start briefly then shut down, or not start at all.
Triac / Power Module Overheat or Fault
E08
Heater shows E08; may be accompanied by erratic temperature control or sudden shutdown.
Internal Communication / Control Board Fault
E09
Display shows E09; heater does not respond to temperature setting changes.
User Interface / Keypad Fault
E10
Heater shows E10 and will not start; often associated with low or no water flow.
Insufficient Water Flow / Flow Rate Below Minimum
E11
Display shows E11; heater may heat uncontrollably or not at all.
Temperature Regulation Fault / Sensor Mismatch
E12
Heater shows E12; may be associated with very high inlet temperature or recirculation systems.
Inlet Temperature Too High
E13
Display shows E13; heater may shut down intermittently, especially under high load.
Supply Voltage Out of Range
E14
Heater shows E14; unit may not respond or may reboot repeatedly.
Internal Power Supply Fault
E15
Display shows E15; heater may not detect flow correctly or may cycle on and off.
Hydraulic Block / Flow Measurement Error
E16
Heater shows E16; may be associated with ground fault or leakage current detection.
Earth Leakage / Ground Fault Detected
E17
Display shows E17; heater may not start after recent service or installation.
Configuration / Parameter Error
E18
Heater shows E18; may be linked to external control or communication bus.
External Control / BUS Communication Fault
E19
Display shows E19; heater may limit power or shut down under high temperature rise.
Excessive Temperature Rise / Delta-T Fault
E20
Heater shows E20; may be associated with internal memory or EEPROM issues.
Non-Volatile Memory Error
Symptom
Display is dim, flickering, or unreadable, but heater may still heat.
Display / Backlight Fault
Symptom
Display is on but buttons do not respond or respond intermittently.
Keypad / Control Panel Malfunction
Symptom
Heater body or piping gives a mild electric shock when touched.
Stray Voltage / Improper Earthing
Symptom
Heater does not start after being idle for a long period (seasonal use).
Stiction / Corrosion After Long Idle Time
Symptom
Heater emits a burning smell or visible smoke during operation.
Overheating / Electrical Burning
Symptom
Heater frequently displays air in system warnings (if applicable) or gurgling sounds are heard.
Air Entrapment in Heat Exchanger
Symptom
Heater frequently shuts off and restarts while using hot water.
Short Cycling / Intermittent Operation
Symptom
Heater makes loud clicking, humming, or buzzing noises during operation.
Mechanical / Electrical Noise
Symptom
Heater operates but causes noticeable lights dimming or electrical interference in the home.
High Inrush / Electrical Disturbance
Symptom
Heater shows correct temperature but actual water at tap is much cooler or hotter.
Display vs Actual Temperature Mismatch
Symptom
Heater trips the circuit breaker or RCD/ELCB when heating starts.
Overcurrent or Earth Leakage Trip
Symptom
Water drips from the pressure relief valve connected to the heater.
Relief Valve Discharge
Symptom
Water heater does not turn on at all; no display, no lights, no response.
No Power / Dead Unit
Symptom
Water heater is leaking from the bottom or inside the casing.
Internal Water Leak
Symptom
Water heater powers on but does not heat water; outlet water remains cold.
No Heating Output
Symptom
Water is lukewarm or not hot enough even at maximum temperature setting.
Insufficient Heating Capacity
Symptom
Water is too hot even at low temperature settings; risk of scalding.
Overheating / Temperature Overshoot
Symptom
Water temperature fluctuates between hot and cold during use.
Unstable Temperature Regulation
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Water heater does not start heating; display shows E01 immediately after power-on.
|
Flow Sensor / Flow Switch Fault | View Details |
| E02 |
Heater stops heating and displays E02; unit may attempt to start and then shut down quickly.
|
Outlet Temperature Sensor (NTC) Fault | View Details |
| E03 |
Display shows E03 and heater does not operate; may occur after a power surge or wiring work.
|
Inlet Temperature Sensor (NTC) Fault | View Details |
| E04 |
Heater shuts down with E04; may occur during long draws of hot water, sometimes accompanied by very hot outlet temperature.
|
Overheat / Safety Thermostat Trip | View Details |
| E05 |
Display shows E05 and heater will not start; may appear after dry firing or air in the system.
|
Overheat Sensor / Thermal Fuse Fault | View Details |
| E06 |
Heater displays E06; unit may power on but will not heat.
|
Heating Element Circuit Fault | View Details |
| E07 |
Display shows E07; heater may start briefly then shut down, or not start at all.
|
Triac / Power Module Overheat or Fault | View Details |
| E08 |
Heater shows E08; may be accompanied by erratic temperature control or sudden shutdown.
|
Internal Communication / Control Board Fault | View Details |
| E09 |
Display shows E09; heater does not respond to temperature setting changes.
|
User Interface / Keypad Fault | View Details |
| E10 |
Heater shows E10 and will not start; often associated with low or no water flow.
|
Insufficient Water Flow / Flow Rate Below Minimum | View Details |
| E11 |
Display shows E11; heater may heat uncontrollably or not at all.
|
Temperature Regulation Fault / Sensor Mismatch | View Details |
| E12 |
Heater shows E12; may be associated with very high inlet temperature or recirculation systems.
|
Inlet Temperature Too High | View Details |
| E13 |
Display shows E13; heater may shut down intermittently, especially under high load.
|
Supply Voltage Out of Range | View Details |
| E14 |
Heater shows E14; unit may not respond or may reboot repeatedly.
|
Internal Power Supply Fault | View Details |
| E15 |
Display shows E15; heater may not detect flow correctly or may cycle on and off.
|
Hydraulic Block / Flow Measurement Error | View Details |
| E16 |
Heater shows E16; may be associated with ground fault or leakage current detection.
|
Earth Leakage / Ground Fault Detected | View Details |
| E17 |
Display shows E17; heater may not start after recent service or installation.
|
Configuration / Parameter Error | View Details |
| E18 |
Heater shows E18; may be linked to external control or communication bus.
|
External Control / BUS Communication Fault | View Details |
| E19 |
Display shows E19; heater may limit power or shut down under high temperature rise.
|
Excessive Temperature Rise / Delta-T Fault | View Details |
| E20 |
Heater shows E20; may be associated with internal memory or EEPROM issues.
|
Non-Volatile Memory Error | View Details |
| – |
Display is dim, flickering, or unreadable, but heater may still heat.
|
Display / Backlight Fault | View Details |
| – |
Display is on but buttons do not respond or respond intermittently.
|
Keypad / Control Panel Malfunction | View Details |
| – |
Heater body or piping gives a mild electric shock when touched.
|
Stray Voltage / Improper Earthing | View Details |
| – |
Heater does not start after being idle for a long period (seasonal use).
|
Stiction / Corrosion After Long Idle Time | View Details |
| – |
Heater emits a burning smell or visible smoke during operation.
|
Overheating / Electrical Burning | View Details |
| – |
Heater frequently displays air in system warnings (if applicable) or gurgling sounds are heard.
|
Air Entrapment in Heat Exchanger | View Details |
| – |
Heater frequently shuts off and restarts while using hot water.
|
Short Cycling / Intermittent Operation | View Details |
| – |
Heater makes loud clicking, humming, or buzzing noises during operation.
|
Mechanical / Electrical Noise | View Details |
| – |
Heater operates but causes noticeable lights dimming or electrical interference in the home.
|
High Inrush / Electrical Disturbance | View Details |
| – |
Heater shows correct temperature but actual water at tap is much cooler or hotter.
|
Display vs Actual Temperature Mismatch | View Details |
| – |
Heater trips the circuit breaker or RCD/ELCB when heating starts.
|
Overcurrent or Earth Leakage Trip | View Details |
| – |
Water drips from the pressure relief valve connected to the heater.
|
Relief Valve Discharge | View Details |
| – |
Water heater does not turn on at all; no display, no lights, no response.
|
No Power / Dead Unit | View Details |
| – |
Water heater is leaking from the bottom or inside the casing.
|
Internal Water Leak | View Details |
| – |
Water heater powers on but does not heat water; outlet water remains cold.
|
No Heating Output | View Details |
| – |
Water is lukewarm or not hot enough even at maximum temperature setting.
|
Insufficient Heating Capacity | View Details |
| – |
Water is too hot even at low temperature settings; risk of scalding.
|
Overheating / Temperature Overshoot | View Details |
| – |
Water temperature fluctuates between hot and cold during use.
|
Unstable Temperature Regulation | View Details |
No matching codes found
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