Rheem 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
Digital control will not start the pool pump; display shows E01 and pump does not run.
Low Line Voltage / Under‑Voltage Lockout
E02
Pump attempts to start, hums briefly, then stops; display shows E02 overload or overcurrent error.
Motor Overcurrent / Locked Rotor Protection
E03
Pump stops during operation and displays E03 indicating over‑temperature or thermal trip.
Motor Overheating / Thermal Overload
E04
Digital controller shows E04 and pump will not start; sometimes accompanied by tripped GFCI or breaker.
Ground Fault / Leakage Current Detected
E05
Pump display shows E05 and motor speed cannot be adjusted; unit may run at fixed low or high speed only.
Speed Sensor / Tachometer Feedback Fault
E06
Controller shows E06 communication error; pump does not respond to external automation or keypad commands.
Communication Failure Between Rheem Pump and Control Interface
E07
Pump display shows E07 indicating phase error or incorrect supply; motor will not start.
Incorrect Supply Configuration / Phase Loss (for multi‑phase models)
E08
Pump stops and displays E08; may coincide with very high system pressure on the filter gauge.
Hydraulic Overload / High Head Protection
E09
Pump display shows E09 flow error; pump may start then quickly shut down.
Low Flow / Dry‑Run Protection
E10
Pump controller shows E10 internal fault; pump will not run even though power is present.
Internal Control Board / Drive Failure
E11
Pump display shows E11 indicating EEPROM or memory error; settings may not save or pump behaves erratically.
Non‑Volatile Memory / Firmware Fault
E12
Pump shows E12 sensor error; temperature or flow readings on the display are clearly incorrect.
Auxiliary Sensor Failure (Temperature/Pressure/Flow)
E13
Pump intermittently shuts down with E13 indicating DC bus overvoltage on variable‑speed models.
DC Bus Overvoltage in Variable‑Speed Drive
E14
Pump display shows E14 indicating DC bus undervoltage; motor may stall or fail to start at higher speeds.
DC Bus Undervoltage / Brownout Condition
E15
Pump shows E15 overload; motor stops after running for a short period, especially at high speed.
Electronic Overload / Overcurrent Protection
E16
Pump controller displays E16 indicating internal temperature sensor fault; unit may derate or shut down.
Internal Drive Temperature Sensing Error
E17
Pump shows E17 indicating keypad or user interface error; buttons may not respond or display is frozen.
Keypad / User Interface Failure
E18
Pump intermittently displays E18 external interlock or safety input open; pump will not run until cleared.
External Safety Interlock Open (Flow Switch, Heater Interlock, etc.)
E19
Pump shows E19 indicating clock or real‑time module error; schedules may not run correctly.
Real‑Time Clock (RTC) Failure
Symptom
Pump cannot be controlled by the pool automation system, but runs manually from its own keypad.
External Control Integration Failure
Symptom
Pump display is blank or unreadable, but motor may still run at a default speed.
Display / HMI Failure
Symptom
Pump emits a burning smell or visible smoke from the motor area.
Motor Overheating / Electrical Failure
Symptom
Pump housing leaks water at the joint between the motor and the pump body.
Failed Mechanical Shaft Seal
Symptom
Pump is extremely noisy, with grinding or screeching sounds coming from the motor area.
Motor Bearing Failure
Symptom
Pump makes a loud rattling or grinding noise from the wet end; flow may be reduced.
Impeller Damage or Debris
Symptom
Pump motor hums but does not start spinning; may trip breaker after a few seconds.
Failed Start Circuit / Locked Rotor
Symptom
Pump runs but loses prime and fills with air after a few minutes; water flow becomes intermittent.
Suction Air Leak / Loss of Prime
Symptom
Pump runs but makes a constant gurgling or cavitation noise; bubbles visible under the lid.
Cavitation Due to Low Suction Head
Symptom
Pump runs but pool water remains cloudy or dirty despite apparent circulation.
Insufficient Flow Rate / Incorrect Speed Programming
Symptom
Pump runs but Rheem pool heater or heat pump does not fire when it should.
Insufficient Flow or Incorrect Interlock to Heater
Symptom
Pump runs but there is very little or no water flow returning to the pool.
Suction or Discharge Flow Restriction
Symptom
Pump speed fluctuates up and down without changes to settings; flow and pressure vary.
Unstable Speed Control / Feedback Issue
Symptom
Pump starts and stops repeatedly in short cycles without user input.
Short Cycling Due to Control or Interlock Issues
Symptom
Pump trips the breaker or GFCI shortly after starting or randomly during operation.
Electrical Overload or Ground Fault
Symptom
Pump vibrates excessively and may move on the pad during operation.
Imbalance or Mounting Issues
Symptom
Pump will not start at all; no hum, no sound, but power is available at the equipment pad.
No Power to Motor / Control Not Energizing
Symptom
Water leaks from the clear pump lid area when the pump is running.
Lid Seal Failure / Cracked Lid
Symptom
Water leaks from the side of the pump housing or around drain plugs.
Housing Crack or Drain Plug Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Digital control will not start the pool pump; display shows E01 and pump does not run.
|
Low Line Voltage / Under‑Voltage Lockout | View Details |
| E02 |
Pump attempts to start, hums briefly, then stops; display shows E02 overload or overcurrent error.
|
Motor Overcurrent / Locked Rotor Protection | View Details |
| E03 |
Pump stops during operation and displays E03 indicating over‑temperature or thermal trip.
|
Motor Overheating / Thermal Overload | View Details |
| E04 |
Digital controller shows E04 and pump will not start; sometimes accompanied by tripped GFCI or breaker.
|
Ground Fault / Leakage Current Detected | View Details |
| E05 |
Pump display shows E05 and motor speed cannot be adjusted; unit may run at fixed low or high speed only.
|
Speed Sensor / Tachometer Feedback Fault | View Details |
| E06 |
Controller shows E06 communication error; pump does not respond to external automation or keypad commands.
|
Communication Failure Between Rheem Pump and Control Interface | View Details |
| E07 |
Pump display shows E07 indicating phase error or incorrect supply; motor will not start.
|
Incorrect Supply Configuration / Phase Loss (for multi‑phase models) | View Details |
| E08 |
Pump stops and displays E08; may coincide with very high system pressure on the filter gauge.
|
Hydraulic Overload / High Head Protection | View Details |
| E09 |
Pump display shows E09 flow error; pump may start then quickly shut down.
|
Low Flow / Dry‑Run Protection | View Details |
| E10 |
Pump controller shows E10 internal fault; pump will not run even though power is present.
|
Internal Control Board / Drive Failure | View Details |
| E11 |
Pump display shows E11 indicating EEPROM or memory error; settings may not save or pump behaves erratically.
|
Non‑Volatile Memory / Firmware Fault | View Details |
| E12 |
Pump shows E12 sensor error; temperature or flow readings on the display are clearly incorrect.
|
Auxiliary Sensor Failure (Temperature/Pressure/Flow) | View Details |
| E13 |
Pump intermittently shuts down with E13 indicating DC bus overvoltage on variable‑speed models.
|
DC Bus Overvoltage in Variable‑Speed Drive | View Details |
| E14 |
Pump display shows E14 indicating DC bus undervoltage; motor may stall or fail to start at higher speeds.
|
DC Bus Undervoltage / Brownout Condition | View Details |
| E15 |
Pump shows E15 overload; motor stops after running for a short period, especially at high speed.
|
Electronic Overload / Overcurrent Protection | View Details |
| E16 |
Pump controller displays E16 indicating internal temperature sensor fault; unit may derate or shut down.
|
Internal Drive Temperature Sensing Error | View Details |
| E17 |
Pump shows E17 indicating keypad or user interface error; buttons may not respond or display is frozen.
|
Keypad / User Interface Failure | View Details |
| E18 |
Pump intermittently displays E18 external interlock or safety input open; pump will not run until cleared.
|
External Safety Interlock Open (Flow Switch, Heater Interlock, etc.) | View Details |
| E19 |
Pump shows E19 indicating clock or real‑time module error; schedules may not run correctly.
|
Real‑Time Clock (RTC) Failure | View Details |
| – |
Pump cannot be controlled by the pool automation system, but runs manually from its own keypad.
|
External Control Integration Failure | View Details |
| – |
Pump display is blank or unreadable, but motor may still run at a default speed.
|
Display / HMI Failure | View Details |
| – |
Pump emits a burning smell or visible smoke from the motor area.
|
Motor Overheating / Electrical Failure | View Details |
| – |
Pump housing leaks water at the joint between the motor and the pump body.
|
Failed Mechanical Shaft Seal | View Details |
| – |
Pump is extremely noisy, with grinding or screeching sounds coming from the motor area.
|
Motor Bearing Failure | View Details |
| – |
Pump makes a loud rattling or grinding noise from the wet end; flow may be reduced.
|
Impeller Damage or Debris | View Details |
| – |
Pump motor hums but does not start spinning; may trip breaker after a few seconds.
|
Failed Start Circuit / Locked Rotor | View Details |
| – |
Pump runs but loses prime and fills with air after a few minutes; water flow becomes intermittent.
|
Suction Air Leak / Loss of Prime | View Details |
| – |
Pump runs but makes a constant gurgling or cavitation noise; bubbles visible under the lid.
|
Cavitation Due to Low Suction Head | View Details |
| – |
Pump runs but pool water remains cloudy or dirty despite apparent circulation.
|
Insufficient Flow Rate / Incorrect Speed Programming | View Details |
| – |
Pump runs but Rheem pool heater or heat pump does not fire when it should.
|
Insufficient Flow or Incorrect Interlock to Heater | View Details |
| – |
Pump runs but there is very little or no water flow returning to the pool.
|
Suction or Discharge Flow Restriction | View Details |
| – |
Pump speed fluctuates up and down without changes to settings; flow and pressure vary.
|
Unstable Speed Control / Feedback Issue | View Details |
| – |
Pump starts and stops repeatedly in short cycles without user input.
|
Short Cycling Due to Control or Interlock Issues | View Details |
| – |
Pump trips the breaker or GFCI shortly after starting or randomly during operation.
|
Electrical Overload or Ground Fault | View Details |
| – |
Pump vibrates excessively and may move on the pad during operation.
|
Imbalance or Mounting Issues | View Details |
| – |
Pump will not start at all; no hum, no sound, but power is available at the equipment pad.
|
No Power to Motor / Control Not Energizing | View Details |
| – |
Water leaks from the clear pump lid area when the pump is running.
|
Lid Seal Failure / Cracked Lid | View Details |
| – |
Water leaks from the side of the pump housing or around drain plugs.
|
Housing Crack or Drain Plug Leak | View Details |
No matching codes found
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