AquaJet
AquaJet Pool Pumps Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Pump will not start, display shows E01 immediately after power-on.
Low Line Voltage / Undervoltage Protection
E02
Pump attempts to start, hums briefly, then stops and displays E02.
Overcurrent / Locked Rotor Protection
E03
Pump stops during operation and displays E03, will not restart until cooled.
Motor Overtemperature Trip
E04
Display shows E04 and pump will not start; sometimes occurs after a power outage.
Phase Loss / Phase Imbalance (for 3‑phase AquaJet models)
E05
Pump display shows E05 and motor does not run; sometimes accompanied by a clicking sound.
Internal Drive / Inverter Fault
E06
Pump starts then quickly stops with E06; sometimes runs roughly before stopping.
Motor Overload / Excessive Current Draw
E07
Display shows E07 and pump will not start; occurs after dry running or blocked suction.
Dry Run / No Water Protection
E08
Pump display shows E08 and speed cannot be adjusted; unit may run at a fixed low speed.
Speed Sensor / Feedback Error
E09
Display shows E09 and pump stops; often occurs during thunderstorms or after a surge.
Overvoltage / Surge Protection Trip
E10
Pump display shows E10 and unit will not start; keypad appears unresponsive.
Keypad / User Interface Communication Error
E11
Display shows E11 and pump stops; may occur when water temperature is very high.
Water Temperature Sensor Fault / Overtemperature
E12
Pump display shows E12 and unit will not run; often after long cable runs or noisy power.
Communication / EMI Interference Error
E13
Display shows E13 and pump speed is limited; cannot reach programmed RPM.
Maximum Current Limit / Torque Limit Reached
E14
Pump display shows E14 and unit stops; may coincide with tripping of GFCI breaker.
Ground Fault / Leakage Current Detected
E15
Display shows E15 and pump cannot be controlled by external automation system.
External Control Input Fault
E16
Pump display shows E16 and unit will not start; often after long storage or installation.
Internal Memory / Parameter Corruption
E17
Display shows E17 and pump speed fluctuates unexpectedly.
Unstable Supply / Line Frequency Error
E18
Display shows E18 and pump stops; may coincide with very low system pressure.
Suction Pressure Too Low / Cavitation Protection
E19
Display shows E19 and pump cannot reach set flow rate; flow reading is erratic.
Flow Sensor Calibration / Fault
E20
Display shows E20 and pump will not start; internal relay clicks once.
Start Circuit / Relay Fault
Symptom
Pump display is on but keypad buttons do not respond or respond intermittently.
Keypad / Interface Failure
Symptom
Pump emits a burning smell or visible smoke from the motor area.
Motor Winding or Insulation Failure
Symptom
Pump emits a loud humming sound but does not start; may trip breaker after a few seconds.
Stalled Motor / Start Circuit Failure
Symptom
Pump housing or motor feels excessively hot to the touch during normal operation.
Overheating Under Load
Symptom
Pump is leaking water from the area between the motor and the pump housing.
Mechanical Shaft Seal Failure
Symptom
Pump makes a rattling or clattering noise, especially at startup or shutdown.
Loose Impeller or Debris in Volute
Symptom
Pump runs at only one speed and ignores programmed speed changes.
Variable Speed Control Failure
Symptom
Pump runs but filter pressure is unusually high and flow at the returns is weak.
System Restriction / High Head
Symptom
Pump runs but filter pressure is very low and there is poor skimming action.
Low Suction / Partial Blockage
Symptom
Pump runs but is extremely noisy, with a loud grinding or screeching sound.
Motor Bearing Failure
Symptom
Pump runs but there are large amounts of air bubbles visible in the pump lid and at the pool returns.
Suction-Side Air Leak
Symptom
Pump runs but there is no or very little water flow back to the pool.
Loss of Prime / Airlocked Pump
Symptom
Pump runs but trips the circuit breaker or GFCI after several minutes.
Overcurrent or Ground Fault Under Load
Symptom
Pump runs but water appears cloudy or dirty despite normal circulation.
Insufficient Turnover / Flow Mismatch
Symptom
Pump schedule does not run at programmed times; clock appears incorrect.
Real-Time Clock / Programming Issue
Symptom
Pump starts then shuts off after a few seconds without showing an error code.
Thermal Overload or Internal Protection Trip
Symptom
Pump vibrates excessively and causes pipes to shake during operation.
Imbalance or Misalignment
Symptom
Pump will not start at all; no display, no lights, and no sound.
No Power to Pump
Symptom
Water is leaking from around the clear pump lid during operation.
Lid Seal / O‑Ring Leak
Symptom
Water is leaking from the union connections on the suction or discharge side of the pump.
Union Gasket / Thread Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Pump will not start, display shows E01 immediately after power-on.
|
Low Line Voltage / Undervoltage Protection | View Details |
| E02 |
Pump attempts to start, hums briefly, then stops and displays E02.
|
Overcurrent / Locked Rotor Protection | View Details |
| E03 |
Pump stops during operation and displays E03, will not restart until cooled.
|
Motor Overtemperature Trip | View Details |
| E04 |
Display shows E04 and pump will not start; sometimes occurs after a power outage.
|
Phase Loss / Phase Imbalance (for 3‑phase AquaJet models) | View Details |
| E05 |
Pump display shows E05 and motor does not run; sometimes accompanied by a clicking sound.
|
Internal Drive / Inverter Fault | View Details |
| E06 |
Pump starts then quickly stops with E06; sometimes runs roughly before stopping.
|
Motor Overload / Excessive Current Draw | View Details |
| E07 |
Display shows E07 and pump will not start; occurs after dry running or blocked suction.
|
Dry Run / No Water Protection | View Details |
| E08 |
Pump display shows E08 and speed cannot be adjusted; unit may run at a fixed low speed.
|
Speed Sensor / Feedback Error | View Details |
| E09 |
Display shows E09 and pump stops; often occurs during thunderstorms or after a surge.
|
Overvoltage / Surge Protection Trip | View Details |
| E10 |
Pump display shows E10 and unit will not start; keypad appears unresponsive.
|
Keypad / User Interface Communication Error | View Details |
| E11 |
Display shows E11 and pump stops; may occur when water temperature is very high.
|
Water Temperature Sensor Fault / Overtemperature | View Details |
| E12 |
Pump display shows E12 and unit will not run; often after long cable runs or noisy power.
|
Communication / EMI Interference Error | View Details |
| E13 |
Display shows E13 and pump speed is limited; cannot reach programmed RPM.
|
Maximum Current Limit / Torque Limit Reached | View Details |
| E14 |
Pump display shows E14 and unit stops; may coincide with tripping of GFCI breaker.
|
Ground Fault / Leakage Current Detected | View Details |
| E15 |
Display shows E15 and pump cannot be controlled by external automation system.
|
External Control Input Fault | View Details |
| E16 |
Pump display shows E16 and unit will not start; often after long storage or installation.
|
Internal Memory / Parameter Corruption | View Details |
| E17 |
Display shows E17 and pump speed fluctuates unexpectedly.
|
Unstable Supply / Line Frequency Error | View Details |
| E18 |
Display shows E18 and pump stops; may coincide with very low system pressure.
|
Suction Pressure Too Low / Cavitation Protection | View Details |
| E19 |
Display shows E19 and pump cannot reach set flow rate; flow reading is erratic.
|
Flow Sensor Calibration / Fault | View Details |
| E20 |
Display shows E20 and pump will not start; internal relay clicks once.
|
Start Circuit / Relay Fault | View Details |
| – |
Pump display is on but keypad buttons do not respond or respond intermittently.
|
Keypad / Interface Failure | View Details |
| – |
Pump emits a burning smell or visible smoke from the motor area.
|
Motor Winding or Insulation Failure | View Details |
| – |
Pump emits a loud humming sound but does not start; may trip breaker after a few seconds.
|
Stalled Motor / Start Circuit Failure | View Details |
| – |
Pump housing or motor feels excessively hot to the touch during normal operation.
|
Overheating Under Load | View Details |
| – |
Pump is leaking water from the area between the motor and the pump housing.
|
Mechanical Shaft Seal Failure | View Details |
| – |
Pump makes a rattling or clattering noise, especially at startup or shutdown.
|
Loose Impeller or Debris in Volute | View Details |
| – |
Pump runs at only one speed and ignores programmed speed changes.
|
Variable Speed Control Failure | View Details |
| – |
Pump runs but filter pressure is unusually high and flow at the returns is weak.
|
System Restriction / High Head | View Details |
| – |
Pump runs but filter pressure is very low and there is poor skimming action.
|
Low Suction / Partial Blockage | View Details |
| – |
Pump runs but is extremely noisy, with a loud grinding or screeching sound.
|
Motor Bearing Failure | View Details |
| – |
Pump runs but there are large amounts of air bubbles visible in the pump lid and at the pool returns.
|
Suction-Side Air Leak | View Details |
| – |
Pump runs but there is no or very little water flow back to the pool.
|
Loss of Prime / Airlocked Pump | View Details |
| – |
Pump runs but trips the circuit breaker or GFCI after several minutes.
|
Overcurrent or Ground Fault Under Load | View Details |
| – |
Pump runs but water appears cloudy or dirty despite normal circulation.
|
Insufficient Turnover / Flow Mismatch | View Details |
| – |
Pump schedule does not run at programmed times; clock appears incorrect.
|
Real-Time Clock / Programming Issue | View Details |
| – |
Pump starts then shuts off after a few seconds without showing an error code.
|
Thermal Overload or Internal Protection Trip | View Details |
| – |
Pump vibrates excessively and causes pipes to shake during operation.
|
Imbalance or Misalignment | View Details |
| – |
Pump will not start at all; no display, no lights, and no sound.
|
No Power to Pump | View Details |
| – |
Water is leaking from around the clear pump lid during operation.
|
Lid Seal / O‑Ring Leak | View Details |
| – |
Water is leaking from the union connections on the suction or discharge side of the pump.
|
Union Gasket / Thread Leak | View Details |
No matching codes found
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