Kospel
Kospel Boilers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Boiler does not start heating; display shows E01 and heating indicator does not light
Flow Switch / Flow Sensor Fault
E02
Boiler stops heating and displays E02; unit may attempt to start and then shut down quickly
Overheat Thermostat / Safety Temperature Limiter Trip
E03
Boiler shows E03 and does not respond to heating demand; no relay click is heard
NTC Flow Temperature Sensor Fault (Open or Short Circuit)
E04
Boiler displays E04; temperature reading on the display is unrealistic (very high or very low)
Return NTC Temperature Sensor Fault
E05
Boiler shows E05 and does not heat; fan (on combi models) may not start
Flue Gas Temperature Sensor / Exhaust NTC Fault (for gas-fired Kospel units)
E06
Boiler displays E06; domestic hot water (DHW) temperature is not regulated correctly
DHW NTC Temperature Sensor Fault
E07
Boiler shows E07 and will not start; display may show abnormal supply voltage indication
Mains Voltage Out of Range / Supply Fault
E08
Boiler displays E08; heating elements do not energize even though pump may run
Heating Element Circuit Fault
E09
Boiler shows E09; circulation pump does not start and no flow is detected
Circulation Pump Fault
E10
Boiler displays E10; system pressure reading is low and boiler will not fire
Low System Pressure / Pressure Switch Fault
E11
Boiler shows E11; pressure reading is excessively high and safety valve may discharge water
High System Pressure / Overpressure
E12
Boiler displays E12; no communication with user interface or remote controller
Communication Error Between Main Board and Control Panel
E13
Boiler shows E13; fan does not start and ignition sequence is aborted (gas models)
Fan / Air Pressure Switch Fault
E14
Boiler displays E14; ignition attempts fail and burner does not light (gas models)
Ignition Failure / Flame Not Detected
E15
Boiler shows E15; burner lights but then shuts down quickly (gas models)
Flame Loss During Operation
E16
Boiler displays E16; internal temperature rises rapidly and boiler shuts down
Heat Exchanger Overheat / Poor Circulation
E17
Boiler shows E17; internal fault indicated, boiler unresponsive to user commands
Main Control Board Internal Error
E18
Boiler displays E18; external room thermostat or controller not recognized
External Control Input Fault
E19
Boiler shows E19; DHW flow is present but boiler does not switch to DHW mode
DHW Flow Switch / Flow Sensor Fault
E20
Boiler displays E20; safety cut-out triggered due to internal leak or moisture
Leak Detection / Moisture Sensor Fault
Symptom
Boiler display is blank or very dim, but the boiler still heats
Display Backlight / LCD Failure
Symptom
Boiler display is on but buttons or rotary controls do not respond
User Interface Panel Failure
Symptom
Boiler emits a burning smell or plastic odor during operation
Overheating Electrical Components
Symptom
Boiler fan runs continuously even when there is no heat demand (gas models)
Fan Overrun / Control Fault
Symptom
Boiler frequently cycles on and off with short run times, causing temperature swings
Short Cycling
Symptom
Boiler is completely dead; no display, no lights, and no response to controls
No Power / Supply Failure
Symptom
Boiler makes loud banging or knocking noises when heating starts or stops
Kettling / Water Hammer
Symptom
Boiler operates but energy consumption seems unusually high
Inefficient Operation / Control Settings
Symptom
Boiler or connected pipework vibrates excessively during operation
Hydraulic Vibration / Resonance
Symptom
Boiler powers on but does not start heating when there is a demand from the room thermostat
No Heat Demand Recognition
Symptom
Boiler runs but radiators remain cold or only lukewarm
Insufficient Heat Output / Circulation Problem
Symptom
Boiler safety valve repeatedly discharges water through the discharge pipe
Safety Valve Activation Due to Overpressure
Symptom
Boiler starts but shuts down after a few seconds without showing an error code
Internal Protection Trip Without Displayed Code
Symptom
Domestic hot water temperature fluctuates or is not hot enough
Unstable DHW Temperature Control
Symptom
Radiators heat unevenly; some are hot while others remain cold
System Imbalance / Air Lock
Symptom
Water leaking from the bottom of the Kospel boiler casing
Internal Water Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Boiler does not start heating; display shows E01 and heating indicator does not light
|
Flow Switch / Flow Sensor Fault | View Details |
| E02 |
Boiler stops heating and displays E02; unit may attempt to start and then shut down quickly
|
Overheat Thermostat / Safety Temperature Limiter Trip | View Details |
| E03 |
Boiler shows E03 and does not respond to heating demand; no relay click is heard
|
NTC Flow Temperature Sensor Fault (Open or Short Circuit) | View Details |
| E04 |
Boiler displays E04; temperature reading on the display is unrealistic (very high or very low)
|
Return NTC Temperature Sensor Fault | View Details |
| E05 |
Boiler shows E05 and does not heat; fan (on combi models) may not start
|
Flue Gas Temperature Sensor / Exhaust NTC Fault (for gas-fired Kospel units) | View Details |
| E06 |
Boiler displays E06; domestic hot water (DHW) temperature is not regulated correctly
|
DHW NTC Temperature Sensor Fault | View Details |
| E07 |
Boiler shows E07 and will not start; display may show abnormal supply voltage indication
|
Mains Voltage Out of Range / Supply Fault | View Details |
| E08 |
Boiler displays E08; heating elements do not energize even though pump may run
|
Heating Element Circuit Fault | View Details |
| E09 |
Boiler shows E09; circulation pump does not start and no flow is detected
|
Circulation Pump Fault | View Details |
| E10 |
Boiler displays E10; system pressure reading is low and boiler will not fire
|
Low System Pressure / Pressure Switch Fault | View Details |
| E11 |
Boiler shows E11; pressure reading is excessively high and safety valve may discharge water
|
High System Pressure / Overpressure | View Details |
| E12 |
Boiler displays E12; no communication with user interface or remote controller
|
Communication Error Between Main Board and Control Panel | View Details |
| E13 |
Boiler shows E13; fan does not start and ignition sequence is aborted (gas models)
|
Fan / Air Pressure Switch Fault | View Details |
| E14 |
Boiler displays E14; ignition attempts fail and burner does not light (gas models)
|
Ignition Failure / Flame Not Detected | View Details |
| E15 |
Boiler shows E15; burner lights but then shuts down quickly (gas models)
|
Flame Loss During Operation | View Details |
| E16 |
Boiler displays E16; internal temperature rises rapidly and boiler shuts down
|
Heat Exchanger Overheat / Poor Circulation | View Details |
| E17 |
Boiler shows E17; internal fault indicated, boiler unresponsive to user commands
|
Main Control Board Internal Error | View Details |
| E18 |
Boiler displays E18; external room thermostat or controller not recognized
|
External Control Input Fault | View Details |
| E19 |
Boiler shows E19; DHW flow is present but boiler does not switch to DHW mode
|
DHW Flow Switch / Flow Sensor Fault | View Details |
| E20 |
Boiler displays E20; safety cut-out triggered due to internal leak or moisture
|
Leak Detection / Moisture Sensor Fault | View Details |
| – |
Boiler display is blank or very dim, but the boiler still heats
|
Display Backlight / LCD Failure | View Details |
| – |
Boiler display is on but buttons or rotary controls do not respond
|
User Interface Panel Failure | View Details |
| – |
Boiler emits a burning smell or plastic odor during operation
|
Overheating Electrical Components | View Details |
| – |
Boiler fan runs continuously even when there is no heat demand (gas models)
|
Fan Overrun / Control Fault | View Details |
| – |
Boiler frequently cycles on and off with short run times, causing temperature swings
|
Short Cycling | View Details |
| – |
Boiler is completely dead; no display, no lights, and no response to controls
|
No Power / Supply Failure | View Details |
| – |
Boiler makes loud banging or knocking noises when heating starts or stops
|
Kettling / Water Hammer | View Details |
| – |
Boiler operates but energy consumption seems unusually high
|
Inefficient Operation / Control Settings | View Details |
| – |
Boiler or connected pipework vibrates excessively during operation
|
Hydraulic Vibration / Resonance | View Details |
| – |
Boiler powers on but does not start heating when there is a demand from the room thermostat
|
No Heat Demand Recognition | View Details |
| – |
Boiler runs but radiators remain cold or only lukewarm
|
Insufficient Heat Output / Circulation Problem | View Details |
| – |
Boiler safety valve repeatedly discharges water through the discharge pipe
|
Safety Valve Activation Due to Overpressure | View Details |
| – |
Boiler starts but shuts down after a few seconds without showing an error code
|
Internal Protection Trip Without Displayed Code | View Details |
| – |
Domestic hot water temperature fluctuates or is not hot enough
|
Unstable DHW Temperature Control | View Details |
| – |
Radiators heat unevenly; some are hot while others remain cold
|
System Imbalance / Air Lock | View Details |
| – |
Water leaking from the bottom of the Kospel boiler casing
|
Internal Water Leak | View Details |
No matching codes found
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