Lowara
Lowara 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
Undervoltage / Supply Power Fault
E02
Pump trips to E02 shortly after starting, motor hums then stops
Overcurrent / Motor Overload Protection
E03
Pump stops and displays E03 after running for several minutes; the housing feels very hot.
Motor Overtemperature / Thermal Protection Trip
E04
The display shows E04 and the pump will not start, sometimes after a power outage.
Phase Loss / Phase Failure (Three-Phase Models)
E05
The pump display shows E05, will not run, often after wiring changes.
Phase Reversal / Incorrect Rotation (Three-Phase Models)
E06
The pump stops with E06, sometimes accompanied by a loud click from the control box.
Earth Fault / Ground Fault Detected
E07
The pump display shows E07 and the motor does not start, often after lightning or surges.
DC Bus Overvoltage / Surge Protection Trip (Drive Models)
E08
The pump runs briefly then stops with E08, especially under heavy load.
Undervoltage / Brownout During Operation
E09
The pump display shows E09, will not start, and the keypad is unresponsive at times.
Control Panel / Keypad Communication Fault
E10
The pump stops with E10; water flow is very low or zero.
Dry-Run / No-Flow Protection Activated
E11
The pump display shows E11, runs only at a fixed speed or not at all under external control.
External Control Signal Fault (Analog/Digital Input Error)
E12
The pump shows E12 and stops, often when ramping up to a higher speed.
Motor Stall / Locked Rotor Detection
E13
Pump display shows E13, runs erratically, or not at all.
Internal Drive Fault / Self-Diagnostics Error
E14
Pump shows E14, speed fluctuates, sometimes accompanied by humming.
Motor Feedback / Speed Sensor Error (if equipped)
E15
Pump display shows E15, will not start, often after long idle periods.
Motor Insulation / Leakage Current Alarm
Symptom
Pump cannot be primed after being drained for winterization.
Difficult Re‑Priming / Air Lock
Symptom
Pump emits a high‑pitched squeal or screech when running.
Dry Mechanical Seal or Failing Bearing
Symptom
Pump hums but does not start, then trips the overload or breaker.
Locked Rotor / Failed Start
Symptom
Pump is very noisy, with a loud grinding or rumbling sound during operation.
Worn Motor Bearings / Mechanical Wear
Symptom
Pump makes a loud rattling or clattering noise, especially at high flow.
Cavitation / Hydraulic Noise
Symptom
Pump motor casing shows signs of rust or corrosion, especially near the base and terminal box.
Environmental / Corrosion Damage
Symptom
Pump motor emits a burning smell or visible smoke during operation.
Severe Motor Overheating / Winding Failure
Symptom
Pump runs but filter pressure is very high, and return jets are weak.
System Overpressure / Discharge Restriction
Symptom
Pump runs but flow is weak, and pressure at the filter gauge is low.
Reduced Hydraulic Performance / Partial Blockage
Symptom
Pump runs but makes a clicking or knocking noise once per revolution.
Impeller or Foreign Object Contact
Symptom
Pump runs but makes a low electrical buzzing noise, and performance is erratic.
Electrical Noise / Loose Laminations or Coils
Symptom
Pump runs but pool circulation is poor, and water clarity deteriorates.
Under‑Circulation / Incorrect Run Time or Speed
Symptom
Pump runs but there is no water flow; the strainer pot does not fill.
Loss of Prime / Air-Locked Suction
Symptom
Pump runs but trips the house RCD/GFCI intermittently.
Earth Leakage / Nuisance Tripping
Symptom
Pump runs but water in the pump housing appears milky or full of tiny bubbles.
Air Entrapment / Micro‑Bubbles
Symptom
Pump runs, but there is a noticeable electrical tingling when touching metal pool components.
Potential Bonding / Earthing Issue (Stray Voltage)
Symptom
Pump speed changes unexpectedly or does not follow the programmed schedule.
Control / Programming Issue
Symptom
Pump starts but stops after a few minutes; the motor feels very hot to touch.
Thermal Overload Trip (Mechanical or Electrical Overheating)
Symptom
Pump starts normally but shuts off when a pool cleaner or additional load is connected.
Overload Under Increased Hydraulic Load
Symptom
Pump vibrates excessively, causing pipes to shake and noise to transmit through the system.
Excessive Vibration / Imbalance
Symptom
Pump will not start at all; no hum, no display on the control.
No Power / Dead Pump
Symptom
Water leaking from around the transparent pump lid.
Lid Seal / O‑Ring Leakage
Symptom
Water leaking from the threaded or union connections on the suction or discharge side.
Union / Pipe Joint Leakage
Symptom
Water leaking steadily from the joint between the motor and pump housing.
Mechanical Seal Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Pump will not start, display shows E01 immediately after power-on
|
Undervoltage / Supply Power Fault | View Details |
| E02 |
Pump trips to E02 shortly after starting, motor hums then stops
|
Overcurrent / Motor Overload Protection | View Details |
| E03 |
Pump stops and displays E03 after running for several minutes; the housing feels very hot.
|
Motor Overtemperature / Thermal Protection Trip | View Details |
| E04 |
The display shows E04 and the pump will not start, sometimes after a power outage.
|
Phase Loss / Phase Failure (Three-Phase Models) | View Details |
| E05 |
The pump display shows E05, will not run, often after wiring changes.
|
Phase Reversal / Incorrect Rotation (Three-Phase Models) | View Details |
| E06 |
The pump stops with E06, sometimes accompanied by a loud click from the control box.
|
Earth Fault / Ground Fault Detected | View Details |
| E07 |
The pump display shows E07 and the motor does not start, often after lightning or surges.
|
DC Bus Overvoltage / Surge Protection Trip (Drive Models) | View Details |
| E08 |
The pump runs briefly then stops with E08, especially under heavy load.
|
Undervoltage / Brownout During Operation | View Details |
| E09 |
The pump display shows E09, will not start, and the keypad is unresponsive at times.
|
Control Panel / Keypad Communication Fault | View Details |
| E10 |
The pump stops with E10; water flow is very low or zero.
|
Dry-Run / No-Flow Protection Activated | View Details |
| E11 |
The pump display shows E11, runs only at a fixed speed or not at all under external control.
|
External Control Signal Fault (Analog/Digital Input Error) | View Details |
| E12 |
The pump shows E12 and stops, often when ramping up to a higher speed.
|
Motor Stall / Locked Rotor Detection | View Details |
| E13 |
Pump display shows E13, runs erratically, or not at all.
|
Internal Drive Fault / Self-Diagnostics Error | View Details |
| E14 |
Pump shows E14, speed fluctuates, sometimes accompanied by humming.
|
Motor Feedback / Speed Sensor Error (if equipped) | View Details |
| E15 |
Pump display shows E15, will not start, often after long idle periods.
|
Motor Insulation / Leakage Current Alarm | View Details |
| – |
Pump cannot be primed after being drained for winterization.
|
Difficult Re‑Priming / Air Lock | View Details |
| – |
Pump emits a high‑pitched squeal or screech when running.
|
Dry Mechanical Seal or Failing Bearing | View Details |
| – |
Pump hums but does not start, then trips the overload or breaker.
|
Locked Rotor / Failed Start | View Details |
| – |
Pump is very noisy, with a loud grinding or rumbling sound during operation.
|
Worn Motor Bearings / Mechanical Wear | View Details |
| – |
Pump makes a loud rattling or clattering noise, especially at high flow.
|
Cavitation / Hydraulic Noise | View Details |
| – |
Pump motor casing shows signs of rust or corrosion, especially near the base and terminal box.
|
Environmental / Corrosion Damage | View Details |
| – |
Pump motor emits a burning smell or visible smoke during operation.
|
Severe Motor Overheating / Winding Failure | View Details |
| – |
Pump runs but filter pressure is very high, and return jets are weak.
|
System Overpressure / Discharge Restriction | View Details |
| – |
Pump runs but flow is weak, and pressure at the filter gauge is low.
|
Reduced Hydraulic Performance / Partial Blockage | View Details |
| – |
Pump runs but makes a clicking or knocking noise once per revolution.
|
Impeller or Foreign Object Contact | View Details |
| – |
Pump runs but makes a low electrical buzzing noise, and performance is erratic.
|
Electrical Noise / Loose Laminations or Coils | View Details |
| – |
Pump runs but pool circulation is poor, and water clarity deteriorates.
|
Under‑Circulation / Incorrect Run Time or Speed | View Details |
| – |
Pump runs but there is no water flow; the strainer pot does not fill.
|
Loss of Prime / Air-Locked Suction | View Details |
| – |
Pump runs but trips the house RCD/GFCI intermittently.
|
Earth Leakage / Nuisance Tripping | View Details |
| – |
Pump runs but water in the pump housing appears milky or full of tiny bubbles.
|
Air Entrapment / Micro‑Bubbles | View Details |
| – |
Pump runs, but there is a noticeable electrical tingling when touching metal pool components.
|
Potential Bonding / Earthing Issue (Stray Voltage) | View Details |
| – |
Pump speed changes unexpectedly or does not follow the programmed schedule.
|
Control / Programming Issue | View Details |
| – |
Pump starts but stops after a few minutes; the motor feels very hot to touch.
|
Thermal Overload Trip (Mechanical or Electrical Overheating) | View Details |
| – |
Pump starts normally but shuts off when a pool cleaner or additional load is connected.
|
Overload Under Increased Hydraulic Load | View Details |
| – |
Pump vibrates excessively, causing pipes to shake and noise to transmit through the system.
|
Excessive Vibration / Imbalance | View Details |
| – |
Pump will not start at all; no hum, no display on the control.
|
No Power / Dead Pump | View Details |
| – |
Water leaking from around the transparent pump lid.
|
Lid Seal / O‑Ring Leakage | View Details |
| – |
Water leaking from the threaded or union connections on the suction or discharge side.
|
Union / Pipe Joint Leakage | View Details |
| – |
Water leaking steadily from the joint between the motor and pump housing.
|
Mechanical Seal Failure | View Details |
No matching codes found
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