Hayward
Hayward 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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Com
Display shows Com or communication error when connected to Hayward automation; pump may not respond to commands.
RS-485 Communication Failure
dE
Display shows dE or drive error and pump will not run.
General Drive Electronics Failure
Er1
Display shows Er1 and pump will not run.
Internal Drive Communication Error
Er2
Display shows Er2 and pump does not start or stops unexpectedly.
Motor Position / Hall Sensor Error
Er3
Display shows Er3 and pump will not run.
Internal EEPROM / Memory Error
Er4
Display shows Er4 and pump stops or fails to start.
Internal Temperature Sensor Fault
Er5
Display shows Er5 and pump will not run.
Phase Loss / Output Drive Fault
Er6
Display shows Er6 and pump stops or fails to start.
Ground Fault / Leakage Current Detected
FLO
Display shows FLO and pump will not start or shuts down shortly after starting.
Low Water Flow / Flow Switch Open
HI
Display shows HI and pump shuts down or will not start.
High Line Voltage / Over-Voltage Condition
LO
Display shows LO and pump will not run or runs intermittently.
Low Line Voltage / Under-Voltage Condition
LOC
Display shows LOC and buttons do not respond.
Keypad Lockout / Child Lock Enabled
OC
Display shows OC and pump stops running or will not start.
Overcurrent / Motor Overload Protection
OH
Display shows OH and pump shuts down after running for a period of time.
Overheat Protection / High Internal Temperature
PF
Display shows PF and pump shuts down or will not start.
Power Failure / Brownout Detected
Pr
Display shows Pr and pump runs at a low speed attempting to prime but does not transition to normal operation.
Priming Mode Timeout / Failed Prime
SF
Display shows SF and pump will not start or shuts down quickly.
System Fault / General Safety Fault
Symptom
Pump basket does not fill completely with water; visible swirling and air pocket remain.
Minor Air Leak or High Suction Lift
Symptom
Pump causes air bubbles to appear at pool returns continuously.
Persistent Air Ingress on Suction Side
Symptom
Pump does not respond to schedule or timer settings on the built-in controller.
Controller Programming or Clock Failure
Symptom
Pump emits a burning smell while running.
Overheating Windings or Electrical Components
Symptom
Pump hums but will not start spinning (single-speed or two-speed Hayward pump).
Failed Start Capacitor or Seized Motor
Symptom
Pump is cavitating, with a loud, gravelly sound and lots of air in the pump basket.
Cavitation Due to Restriction or High Suction Lift
Symptom
Pump is unusually quiet and appears to be running, but there is minimal water movement.
Incorrect Speed Setting or Programming
Symptom
Pump is very noisy, with grinding or screeching sounds from the motor area.
Worn or Failed Motor Bearings
Symptom
Pump leaks at the union connections on the inlet or outlet of the Hayward pump.
Union Gasket Failure or Misalignment
Symptom
Pump leaks water at the clear lid on top of the Hayward pump strainer.
Leaking Pump Lid Seal
Symptom
Pump leaks water between the pump housing and motor (at the seal plate).
Failed Mechanical Shaft Seal
Symptom
Pump loses prime repeatedly after running for a while.
Suction-Side Air Leak
Symptom
Pump makes a loud rattling or clattering noise from the wet end.
Debris in Impeller or Broken Impeller Vanes
Symptom
Pump motor is extremely hot to the touch but still running.
Overheating Motor Due to Ventilation or Load Issues
Symptom
Pump motor will not turn by hand; shaft is locked.
Seized Motor or Foreign Object Jam
Symptom
Pump runs but makes a high-pitched whine from the drive area (variable-speed models).
Drive Inverter Noise or Failing Drive Components
Symptom
Pump runs but pool circulation is poor and filter pressure is low.
Impeller Partially Clogged or Worn
Symptom
Pump runs but there is a loud water hammer or banging noise in the plumbing when it starts or stops.
Hydraulic Shock / Water Hammer
Symptom
Pump runs but there is no water movement or very weak flow at the returns.
Loss of Prime / Airbound Pump
Symptom
Pump runs but trips the breaker after a few minutes.
Overcurrent Due to Overload or Failing Motor
Symptom
Pump runs only at one speed regardless of selected program (variable-speed model).
Speed Control Failure
Symptom
Pump speed fluctuates up and down without changes to settings.
Unstable Drive Operation or Flow Instability
Symptom
Pump trips the breaker immediately when turned on.
Short Circuit or Ground Fault in Pump Motor
Symptom
Pump vibrates excessively and moves on the pad during operation.
Imbalance or Misalignment
Symptom
Pump will not start at all, no display or lights on Hayward variable-speed pump.
No Power to Pump
Symptom
Variable-speed pump display is blank, but motor hums or clicks.
Failed Keypad or Low-Voltage Power Supply
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| Com |
Display shows Com or communication error when connected to Hayward automation; pump may not respond to commands.
|
RS-485 Communication Failure | View Details |
| dE |
Display shows dE or drive error and pump will not run.
|
General Drive Electronics Failure | View Details |
| Er1 |
Display shows Er1 and pump will not run.
|
Internal Drive Communication Error | View Details |
| Er2 |
Display shows Er2 and pump does not start or stops unexpectedly.
|
Motor Position / Hall Sensor Error | View Details |
| Er3 |
Display shows Er3 and pump will not run.
|
Internal EEPROM / Memory Error | View Details |
| Er4 |
Display shows Er4 and pump stops or fails to start.
|
Internal Temperature Sensor Fault | View Details |
| Er5 |
Display shows Er5 and pump will not run.
|
Phase Loss / Output Drive Fault | View Details |
| Er6 |
Display shows Er6 and pump stops or fails to start.
|
Ground Fault / Leakage Current Detected | View Details |
| FLO |
Display shows FLO and pump will not start or shuts down shortly after starting.
|
Low Water Flow / Flow Switch Open | View Details |
| HI |
Display shows HI and pump shuts down or will not start.
|
High Line Voltage / Over-Voltage Condition | View Details |
| LO |
Display shows LO and pump will not run or runs intermittently.
|
Low Line Voltage / Under-Voltage Condition | View Details |
| LOC |
Display shows LOC and buttons do not respond.
|
Keypad Lockout / Child Lock Enabled | View Details |
| OC |
Display shows OC and pump stops running or will not start.
|
Overcurrent / Motor Overload Protection | View Details |
| OH |
Display shows OH and pump shuts down after running for a period of time.
|
Overheat Protection / High Internal Temperature | View Details |
| PF |
Display shows PF and pump shuts down or will not start.
|
Power Failure / Brownout Detected | View Details |
| Pr |
Display shows Pr and pump runs at a low speed attempting to prime but does not transition to normal operation.
|
Priming Mode Timeout / Failed Prime | View Details |
| SF |
Display shows SF and pump will not start or shuts down quickly.
|
System Fault / General Safety Fault | View Details |
| – |
Pump basket does not fill completely with water; visible swirling and air pocket remain.
|
Minor Air Leak or High Suction Lift | View Details |
| – |
Pump causes air bubbles to appear at pool returns continuously.
|
Persistent Air Ingress on Suction Side | View Details |
| – |
Pump does not respond to schedule or timer settings on the built-in controller.
|
Controller Programming or Clock Failure | View Details |
| – |
Pump emits a burning smell while running.
|
Overheating Windings or Electrical Components | View Details |
| – |
Pump hums but will not start spinning (single-speed or two-speed Hayward pump).
|
Failed Start Capacitor or Seized Motor | View Details |
| – |
Pump is cavitating, with a loud, gravelly sound and lots of air in the pump basket.
|
Cavitation Due to Restriction or High Suction Lift | View Details |
| – |
Pump is unusually quiet and appears to be running, but there is minimal water movement.
|
Incorrect Speed Setting or Programming | View Details |
| – |
Pump is very noisy, with grinding or screeching sounds from the motor area.
|
Worn or Failed Motor Bearings | View Details |
| – |
Pump leaks at the union connections on the inlet or outlet of the Hayward pump.
|
Union Gasket Failure or Misalignment | View Details |
| – |
Pump leaks water at the clear lid on top of the Hayward pump strainer.
|
Leaking Pump Lid Seal | View Details |
| – |
Pump leaks water between the pump housing and motor (at the seal plate).
|
Failed Mechanical Shaft Seal | View Details |
| – |
Pump loses prime repeatedly after running for a while.
|
Suction-Side Air Leak | View Details |
| – |
Pump makes a loud rattling or clattering noise from the wet end.
|
Debris in Impeller or Broken Impeller Vanes | View Details |
| – |
Pump motor is extremely hot to the touch but still running.
|
Overheating Motor Due to Ventilation or Load Issues | View Details |
| – |
Pump motor will not turn by hand; shaft is locked.
|
Seized Motor or Foreign Object Jam | View Details |
| – |
Pump runs but makes a high-pitched whine from the drive area (variable-speed models).
|
Drive Inverter Noise or Failing Drive Components | View Details |
| – |
Pump runs but pool circulation is poor and filter pressure is low.
|
Impeller Partially Clogged or Worn | View Details |
| – |
Pump runs but there is a loud water hammer or banging noise in the plumbing when it starts or stops.
|
Hydraulic Shock / Water Hammer | View Details |
| – |
Pump runs but there is no water movement or very weak flow at the returns.
|
Loss of Prime / Airbound Pump | View Details |
| – |
Pump runs but trips the breaker after a few minutes.
|
Overcurrent Due to Overload or Failing Motor | View Details |
| – |
Pump runs only at one speed regardless of selected program (variable-speed model).
|
Speed Control Failure | View Details |
| – |
Pump speed fluctuates up and down without changes to settings.
|
Unstable Drive Operation or Flow Instability | View Details |
| – |
Pump trips the breaker immediately when turned on.
|
Short Circuit or Ground Fault in Pump Motor | View Details |
| – |
Pump vibrates excessively and moves on the pad during operation.
|
Imbalance or Misalignment | View Details |
| – |
Pump will not start at all, no display or lights on Hayward variable-speed pump.
|
No Power to Pump | View Details |
| – |
Variable-speed pump display is blank, but motor hums or clicks.
|
Failed Keypad or Low-Voltage Power Supply | View Details |
No matching codes found
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