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, housing feels very hot
Motor Overtemperature / Thermal Protection Trip
E04
Display shows E04 and pump will not start, sometimes after a power outage
Phase Loss / Phase Failure (Three‑Phase Models)
E05
Pump display shows E05, will not run, often after wiring changes
Phase Reversal / Incorrect Rotation (Three‑Phase Models)
E06
Pump stops with E06, sometimes accompanied by a loud click from the control box
Earth Fault / Ground Fault Detected
E07
Pump display shows E07 and motor does not start, often after lightning or surges
DC Bus Overvoltage / Surge Protection Trip (Drive Models)
E08
Pump runs briefly then stops with E08, especially under heavy load
Undervoltage / Brownout During Operation
E09
Pump display shows E09, will not start, keypad unresponsive at times
Control Panel / Keypad Communication Fault
E10
Pump stops with E10, water flow is very low or zero
Dry‑Run / No‑Flow Protection Activated
E11
Pump display shows E11, runs only at fixed speed or not at all under external control
External Control Signal Fault (Analog/Digital Input Error)
E12
Pump shows E12 and stops, often when ramping up to 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 a noticeable electrical tingling when touching metal pool components
Potential Bonding / Earthing Issue (Stray Voltage)
Symptom
Pump runs but there is no water flow, 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 speed changes unexpectedly or does not follow programmed schedule
Control / Programming Issue
Symptom
Pump starts but stops after a few minutes, motor feels very hot to touch
Thermal Overload Trip (Mechanical or Electrical Overheating)
Symptom
Pump starts normally but shuts off when 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 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 suction or discharge
Union / Pipe Joint Leakage
Symptom
Water leaking steadily from the joint between 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, housing feels very hot
|
Motor Overtemperature / Thermal Protection Trip | View Details |
| E04 |
Display shows E04 and pump will not start, sometimes after a power outage
|
Phase Loss / Phase Failure (Three‑Phase Models) | View Details |
| E05 |
Pump display shows E05, will not run, often after wiring changes
|
Phase Reversal / Incorrect Rotation (Three‑Phase Models) | View Details |
| E06 |
Pump stops with E06, sometimes accompanied by a loud click from the control box
|
Earth Fault / Ground Fault Detected | View Details |
| E07 |
Pump display shows E07 and motor does not start, often after lightning or surges
|
DC Bus Overvoltage / Surge Protection Trip (Drive Models) | View Details |
| E08 |
Pump runs briefly then stops with E08, especially under heavy load
|
Undervoltage / Brownout During Operation | View Details |
| E09 |
Pump display shows E09, will not start, keypad unresponsive at times
|
Control Panel / Keypad Communication Fault | View Details |
| E10 |
Pump stops with E10, water flow is very low or zero
|
Dry‑Run / No‑Flow Protection Activated | View Details |
| E11 |
Pump display shows E11, runs only at fixed speed or not at all under external control
|
External Control Signal Fault (Analog/Digital Input Error) | View Details |
| E12 |
Pump shows E12 and stops, often when ramping up to 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 a noticeable electrical tingling when touching metal pool components
|
Potential Bonding / Earthing Issue (Stray Voltage) | View Details |
| – |
Pump runs but there is no water flow, 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 speed changes unexpectedly or does not follow programmed schedule
|
Control / Programming Issue | View Details |
| – |
Pump starts but stops after a few minutes, motor feels very hot to touch
|
Thermal Overload Trip (Mechanical or Electrical Overheating) | View Details |
| – |
Pump starts normally but shuts off when 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 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 suction or discharge
|
Union / Pipe Joint Leakage | View Details |
| – |
Water leaking steadily from the joint between motor and pump housing
|
Mechanical Seal Failure | View Details |
No matching codes found
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