Kripsol
Kripsol Pool 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
Heater will not start; display shows E01 shortly after power-up and the burner never ignites.
Water Flow Fault / Insufficient Circulation
E02
Heater attempts to start but shuts down with E02; fan may run briefly but no flame is established.
Ignition Failure / No Flame Detected
E03
Heater starts, flame appears briefly, then shuts down and displays E03.
Flame Loss During Operation
E04
Heater display shows E04 and the unit will not fire; fan may run but shuts down quickly.
Exhaust / Flue Gas Overheat or Blockage
E05
Heater shows E05 and will not start; water is circulating but no heating occurs.
Inlet Water Temperature Sensor Fault (NTC1)
E06
Heater displays E06 and shuts down; may start briefly then stop.
Outlet Water Temperature Sensor Fault (NTC2)
E07
Heater shows E07 and refuses to start; fan may not run.
High Limit Thermostat / Overheat Trip
E08
Heater displays E08; fan may start but burner does not light.
Air Pressure Switch / Fan Proving Fault
E09
Heater shows E09 and shuts down; may occur after several minutes of operation.
Outlet Water Overtemperature / Anti-Scald Protection
E10
Heater will not start and displays E10 immediately after power-up.
Internal Control Board Communication Error
E11
Heater shows E11; remote control or external thermostat does not operate the unit.
External Control / Communication Fault
E12
Heater displays E12 and shuts down; may be accompanied by unusual fan noise.
Combustion Fan / Blower Fault
E13
Heater shows E13 and will not ignite; gas valve does not click.
Gas Valve Circuit Fault
E14
Heater displays E14; unit may start but then shuts down intermittently.
Power Supply / Low Voltage Fault
E15
Heater shows E15 and stops; may occur during very cold or very hot ambient conditions.
Ambient Temperature Sensor / Frost Protection Fault
E16
Heater displays E16; unit may lock out until power is cycled.
Lockout Due to Repeated Ignition Failures
E17
Heater shows E17 and stops heating; water temperature may overshoot or undershoot setpoint.
Thermostat Calibration / Sensor Mismatch Fault
E18
Heater displays E18; pump is running but heater does not respond to heat demand.
Flow Switch Stuck Closed / Safety Logic Fault
E19
Heater shows E19; display may flicker or buttons may not respond correctly.
User Interface / Keypad Fault
E20
Heater displays E20 and will not start; often after a lightning storm or power surge.
EEPROM / Configuration Memory Error
Symptom
Heater cabinet shows signs of rust, corrosion, or paint blistering around the exhaust area.
Corrosive Flue Gas Condensation
Symptom
Heater causes a noticeable drop in pool water flow or triggers pump overload when it runs.
Hydraulic Restriction Through Heater
Symptom
Heater display works but buttons do not respond or respond intermittently.
Keypad / Control Panel Malfunction
Symptom
Heater does not respond when external pool automation calls for heat, but works in manual mode.
External Control Integration Issue
Symptom
Heater emits a strong gas smell around the unit, especially near the burner compartment.
Gas Leak / Combustion Gas Escape
Symptom
Heater fan runs but burner does not light; no error code is displayed.
Silent Ignition Failure
Symptom
Heater frequently shuts down with no code when the pump speed is reduced on a variable-speed pump.
Low Flow at Reduced Pump Speed
Symptom
Heater is leaking water from the bottom of the cabinet.
Internal Water Leak
Symptom
Heater makes loud banging or knocking noises during operation.
Kettling / Boiling in Heat Exchanger
Symptom
Heater operates but causes noticeable vibration or rattling noises in the cabinet.
Mechanical Vibration / Loose Components
Symptom
Heater produces soot, black staining on the exhaust, or yellow/orange flames.
Incomplete Combustion / Sooting
Symptom
Heater runs but pool water does not reach the set temperature or heats very slowly.
Insufficient Heating Capacity / Underperformance
Symptom
Heater runs but spa temperature overshoots the setpoint significantly before shutting off.
Temperature Overshoot / Control Lag
Symptom
Heater shows signs of internal sooting and corrosion after using saltwater chlorination.
Corrosion from Saltwater / Aggressive Atmosphere
Symptom
Heater shuts down when it rains or in very humid conditions, then works again when dry.
Moisture-Induced Electrical Fault
Symptom
Heater starts and stops frequently in short cycles without maintaining stable temperature.
Short Cycling
Symptom
Heater trips the electrical breaker when it starts or shortly after.
Electrical Short / Overcurrent
Symptom
Heater will not start at all; display is blank and no lights are on.
No Power / Dead Unit
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Heater will not start; display shows E01 shortly after power-up and the burner never ignites.
|
Water Flow Fault / Insufficient Circulation | View Details |
| E02 |
Heater attempts to start but shuts down with E02; fan may run briefly but no flame is established.
|
Ignition Failure / No Flame Detected | View Details |
| E03 |
Heater starts, flame appears briefly, then shuts down and displays E03.
|
Flame Loss During Operation | View Details |
| E04 |
Heater display shows E04 and the unit will not fire; fan may run but shuts down quickly.
|
Exhaust / Flue Gas Overheat or Blockage | View Details |
| E05 |
Heater shows E05 and will not start; water is circulating but no heating occurs.
|
Inlet Water Temperature Sensor Fault (NTC1) | View Details |
| E06 |
Heater displays E06 and shuts down; may start briefly then stop.
|
Outlet Water Temperature Sensor Fault (NTC2) | View Details |
| E07 |
Heater shows E07 and refuses to start; fan may not run.
|
High Limit Thermostat / Overheat Trip | View Details |
| E08 |
Heater displays E08; fan may start but burner does not light.
|
Air Pressure Switch / Fan Proving Fault | View Details |
| E09 |
Heater shows E09 and shuts down; may occur after several minutes of operation.
|
Outlet Water Overtemperature / Anti-Scald Protection | View Details |
| E10 |
Heater will not start and displays E10 immediately after power-up.
|
Internal Control Board Communication Error | View Details |
| E11 |
Heater shows E11; remote control or external thermostat does not operate the unit.
|
External Control / Communication Fault | View Details |
| E12 |
Heater displays E12 and shuts down; may be accompanied by unusual fan noise.
|
Combustion Fan / Blower Fault | View Details |
| E13 |
Heater shows E13 and will not ignite; gas valve does not click.
|
Gas Valve Circuit Fault | View Details |
| E14 |
Heater displays E14; unit may start but then shuts down intermittently.
|
Power Supply / Low Voltage Fault | View Details |
| E15 |
Heater shows E15 and stops; may occur during very cold or very hot ambient conditions.
|
Ambient Temperature Sensor / Frost Protection Fault | View Details |
| E16 |
Heater displays E16; unit may lock out until power is cycled.
|
Lockout Due to Repeated Ignition Failures | View Details |
| E17 |
Heater shows E17 and stops heating; water temperature may overshoot or undershoot setpoint.
|
Thermostat Calibration / Sensor Mismatch Fault | View Details |
| E18 |
Heater displays E18; pump is running but heater does not respond to heat demand.
|
Flow Switch Stuck Closed / Safety Logic Fault | View Details |
| E19 |
Heater shows E19; display may flicker or buttons may not respond correctly.
|
User Interface / Keypad Fault | View Details |
| E20 |
Heater displays E20 and will not start; often after a lightning storm or power surge.
|
EEPROM / Configuration Memory Error | View Details |
| – |
Heater cabinet shows signs of rust, corrosion, or paint blistering around the exhaust area.
|
Corrosive Flue Gas Condensation | View Details |
| – |
Heater causes a noticeable drop in pool water flow or triggers pump overload when it runs.
|
Hydraulic Restriction Through Heater | View Details |
| – |
Heater display works but buttons do not respond or respond intermittently.
|
Keypad / Control Panel Malfunction | View Details |
| – |
Heater does not respond when external pool automation calls for heat, but works in manual mode.
|
External Control Integration Issue | View Details |
| – |
Heater emits a strong gas smell around the unit, especially near the burner compartment.
|
Gas Leak / Combustion Gas Escape | View Details |
| – |
Heater fan runs but burner does not light; no error code is displayed.
|
Silent Ignition Failure | View Details |
| – |
Heater frequently shuts down with no code when the pump speed is reduced on a variable-speed pump.
|
Low Flow at Reduced Pump Speed | View Details |
| – |
Heater is leaking water from the bottom of the cabinet.
|
Internal Water Leak | View Details |
| – |
Heater makes loud banging or knocking noises during operation.
|
Kettling / Boiling in Heat Exchanger | View Details |
| – |
Heater operates but causes noticeable vibration or rattling noises in the cabinet.
|
Mechanical Vibration / Loose Components | View Details |
| – |
Heater produces soot, black staining on the exhaust, or yellow/orange flames.
|
Incomplete Combustion / Sooting | View Details |
| – |
Heater runs but pool water does not reach the set temperature or heats very slowly.
|
Insufficient Heating Capacity / Underperformance | View Details |
| – |
Heater runs but spa temperature overshoots the setpoint significantly before shutting off.
|
Temperature Overshoot / Control Lag | View Details |
| – |
Heater shows signs of internal sooting and corrosion after using saltwater chlorination.
|
Corrosion from Saltwater / Aggressive Atmosphere | View Details |
| – |
Heater shuts down when it rains or in very humid conditions, then works again when dry.
|
Moisture-Induced Electrical Fault | View Details |
| – |
Heater starts and stops frequently in short cycles without maintaining stable temperature.
|
Short Cycling | View Details |
| – |
Heater trips the electrical breaker when it starts or shortly after.
|
Electrical Short / Overcurrent | View Details |
| – |
Heater will not start at all; display is blank and no lights are on.
|
No Power / Dead Unit | View Details |
No matching codes found
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