Zodiac
Zodiac 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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AL0
Automation panel shows AL0 for the Zodiac pump and the pump does not respond to commands.
No Communication with Pump
AL1
Automation panel shows AL1 related to the Zodiac pump and the pump shuts down.
Pump Alarm – Low Flow or Dry Run
AL2
Automation panel shows AL2 for the Zodiac pump and limits or stops pump operation.
Pump Overcurrent / Overload Alarm via Automation
Err1
Zodiac variable-speed pump display shows ERR1 and the motor will not run.
Motor Overcurrent / Overload Fault
Err2
Zodiac variable-speed pump display shows ERR2 and the pump will not start.
Undervoltage / Low Line Voltage Fault
Err3
Zodiac pump controller shows ERR3 and the motor stops or will not start.
Overvoltage / High Line Voltage Fault
Err4
Zodiac variable-speed pump shows ERR4 and stops running.
Drive Overtemperature / Electronics Overheat
Err5
Zodiac pump display shows ERR5 and the motor will not run or stops unexpectedly.
Communication / Control Fault
Err6
Zodiac pump shows ERR6 and will not start.
Internal Drive Fault / Hardware Error
FLO
Pump will not start or stops shortly after starting and the controller/display shows FLO or FLOW error.
Low Water Flow / Flow Switch Open
HOT
Pump display shows HOT or OVERHEAT and the motor shuts down until it cools.
Motor Thermal Overload
LO
Pump display shows LO or LOW and the motor will not run or runs briefly then shuts off.
Low Suction / Prime Loss
Pr
Display shows PR or PRIME and the pump repeatedly attempts to prime but never reaches normal run mode.
Failed Priming Cycle
Symptom
Buttons on the pump control panel do not respond or respond intermittently.
Keypad Failure / Moisture Ingress
Symptom
Pump basket fills with air and water surges when the pool cleaner line is opened.
Cleaner Suction Imbalance / Air Ingress
Symptom
Pump display is blank or unreadable, but the motor still runs.
Display / Interface Failure
Symptom
Pump does not hold prime overnight and must be re-primed each day.
Slow Air Ingress / Leak-Down
Symptom
Pump does not respond to automation system commands but runs manually.
Automation Integration Failure
Symptom
Pump housing or plumbing shows visible cracks and minor water seepage.
Cracked Pump Housing or Fittings
Symptom
Pump hums but does not start; may trip breaker after a few seconds.
Failed Start Circuit / Seized Motor
Symptom
Pump is leaking water from around the motor shaft area between the pump housing and motor.
Mechanical Seal Failure
Symptom
Pump is leaking water from the clear lid area on top of the pump basket.
Lid Seal Leak
Symptom
Pump is leaking water from the drain plug(s) at the bottom of the pump housing.
Drain Plug Seal Leak
Symptom
Pump is running but the pump basket is full of air and water flow is intermittent.
Suction Air Leak
Symptom
Pump is unusually quiet and running, but there is no visible water movement in the pool.
Loss of Prime / Air-Bound Pump
Symptom
Pump is very noisy only when running at high speed on a variable-speed model.
Hydraulic Noise / Cavitation at High RPM
Symptom
Pump makes a loud grinding or screeching noise while running.
Worn Motor Bearings
Symptom
Pump makes a rattling or clattering noise, especially at startup.
Loose Impeller or Debris in Impeller
Symptom
Pump motor is very hot to the touch but still running.
Overheating Motor (Non-Trip)
Symptom
Pump runs but there is a strong burning smell near the motor.
Overheating Windings or Electrical Insulation
Symptom
Pump runs but there is very weak water flow at the pool returns.
Restricted Circulation / High System Head
Symptom
Pump runs but trips the circuit breaker or GFCI after a short time.
Electrical Overload or Ground Fault
Symptom
Pump runs but water appears cloudy and circulation seems poor despite normal pressure.
Insufficient Turnover / Incorrect Speed Programming
Symptom
Pump speed fluctuates up and down on its own without changes to settings.
Unstable Control / Sensor Feedback Issue
Symptom
Pump starts and then shuts off after a short time, repeatedly cycling on and off.
Thermal Cycling / Overload Trip
Symptom
Pump vibrates excessively and may move slightly on the pad during operation.
Imbalance or Mounting Issue
Symptom
Pump will not start at all; no hum, no sound, but power is present at the equipment pad.
No Power to Pump / Control Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| AL0 |
Automation panel shows AL0 for the Zodiac pump and the pump does not respond to commands.
|
No Communication with Pump | View Details |
| AL1 |
Automation panel shows AL1 related to the Zodiac pump and the pump shuts down.
|
Pump Alarm – Low Flow or Dry Run | View Details |
| AL2 |
Automation panel shows AL2 for the Zodiac pump and limits or stops pump operation.
|
Pump Overcurrent / Overload Alarm via Automation | View Details |
| Err1 |
Zodiac variable-speed pump display shows ERR1 and the motor will not run.
|
Motor Overcurrent / Overload Fault | View Details |
| Err2 |
Zodiac variable-speed pump display shows ERR2 and the pump will not start.
|
Undervoltage / Low Line Voltage Fault | View Details |
| Err3 |
Zodiac pump controller shows ERR3 and the motor stops or will not start.
|
Overvoltage / High Line Voltage Fault | View Details |
| Err4 |
Zodiac variable-speed pump shows ERR4 and stops running.
|
Drive Overtemperature / Electronics Overheat | View Details |
| Err5 |
Zodiac pump display shows ERR5 and the motor will not run or stops unexpectedly.
|
Communication / Control Fault | View Details |
| Err6 |
Zodiac pump shows ERR6 and will not start.
|
Internal Drive Fault / Hardware Error | View Details |
| FLO |
Pump will not start or stops shortly after starting and the controller/display shows FLO or FLOW error.
|
Low Water Flow / Flow Switch Open | View Details |
| HOT |
Pump display shows HOT or OVERHEAT and the motor shuts down until it cools.
|
Motor Thermal Overload | View Details |
| LO |
Pump display shows LO or LOW and the motor will not run or runs briefly then shuts off.
|
Low Suction / Prime Loss | View Details |
| Pr |
Display shows PR or PRIME and the pump repeatedly attempts to prime but never reaches normal run mode.
|
Failed Priming Cycle | View Details |
| – |
Buttons on the pump control panel do not respond or respond intermittently.
|
Keypad Failure / Moisture Ingress | View Details |
| – |
Pump basket fills with air and water surges when the pool cleaner line is opened.
|
Cleaner Suction Imbalance / Air Ingress | View Details |
| – |
Pump display is blank or unreadable, but the motor still runs.
|
Display / Interface Failure | View Details |
| – |
Pump does not hold prime overnight and must be re-primed each day.
|
Slow Air Ingress / Leak-Down | View Details |
| – |
Pump does not respond to automation system commands but runs manually.
|
Automation Integration Failure | View Details |
| – |
Pump housing or plumbing shows visible cracks and minor water seepage.
|
Cracked Pump Housing or Fittings | View Details |
| – |
Pump hums but does not start; may trip breaker after a few seconds.
|
Failed Start Circuit / Seized Motor | View Details |
| – |
Pump is leaking water from around the motor shaft area between the pump housing and motor.
|
Mechanical Seal Failure | View Details |
| – |
Pump is leaking water from the clear lid area on top of the pump basket.
|
Lid Seal Leak | View Details |
| – |
Pump is leaking water from the drain plug(s) at the bottom of the pump housing.
|
Drain Plug Seal Leak | View Details |
| – |
Pump is running but the pump basket is full of air and water flow is intermittent.
|
Suction Air Leak | View Details |
| – |
Pump is unusually quiet and running, but there is no visible water movement in the pool.
|
Loss of Prime / Air-Bound Pump | View Details |
| – |
Pump is very noisy only when running at high speed on a variable-speed model.
|
Hydraulic Noise / Cavitation at High RPM | View Details |
| – |
Pump makes a loud grinding or screeching noise while running.
|
Worn Motor Bearings | View Details |
| – |
Pump makes a rattling or clattering noise, especially at startup.
|
Loose Impeller or Debris in Impeller | View Details |
| – |
Pump motor is very hot to the touch but still running.
|
Overheating Motor (Non-Trip) | View Details |
| – |
Pump runs but there is a strong burning smell near the motor.
|
Overheating Windings or Electrical Insulation | View Details |
| – |
Pump runs but there is very weak water flow at the pool returns.
|
Restricted Circulation / High System Head | View Details |
| – |
Pump runs but trips the circuit breaker or GFCI after a short time.
|
Electrical Overload or Ground Fault | View Details |
| – |
Pump runs but water appears cloudy and circulation seems poor despite normal pressure.
|
Insufficient Turnover / Incorrect Speed Programming | View Details |
| – |
Pump speed fluctuates up and down on its own without changes to settings.
|
Unstable Control / Sensor Feedback Issue | View Details |
| – |
Pump starts and then shuts off after a short time, repeatedly cycling on and off.
|
Thermal Cycling / Overload Trip | View Details |
| – |
Pump vibrates excessively and may move slightly on the pad during operation.
|
Imbalance or Mounting Issue | View Details |
| – |
Pump will not start at all; no hum, no sound, but power is present at the equipment pad.
|
No Power to Pump / Control Failure | View Details |
No matching codes found
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