Sta-Rite
Sta-Rite Pool Heaters Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Heater will not fire; display shows E01 shortly after a call for heat
Ignition Failure Lockout
E02
Heater attempts to start but shuts down with E02 on the display
Flame Loss During Run
E03
Heater will not start; E03 appears immediately after call for heat
Pressure Switch Open / No Water Flow
E04
Heater shuts down with E04 after running briefly; may be hot to the touch
High Limit Switch Open / Overheat Condition
E05
Heater displays E05 and will not fire; often occurs in windy or confined installations
Flue / Exhaust Temperature Fault
E06
Heater shows E06 and will not respond to thermostat commands
Water Temperature Sensor Failure
E07
Display shows E07; heater will not start or shuts down quickly
Stack Flue Sensor Open/Short
E08
Heater shows E08 and does not respond to thermostat or spa/pool mode changes
Control Board Communication Error
E09
Heater displays E09; blower may not start on models with forced draft
Blower Failure / Air Proving Fault
E10
Heater shows E10 and will not fire; often associated with external automation systems
External Control / Thermostat Input Error
E11
Heater intermittently locks out with E11; may run normally at times
Low Gas Pressure / Gas Valve Fault
E12
Heater shows E12; display may be blank or flicker before code appears
Low Voltage / Power Supply Fault
E13
Heater displays E13; may be associated with very cold inlet water or sensor issues
Inlet/Outlet Temperature Differential Fault
E14
Heater shows E14 and will not fire; often after service or wiring changes
Polarity / Line Wiring Error
E15
Heater intermittently shows E15; may coincide with strong wind conditions
Flame Proving / Combustion Instability
E16
Heater shows E16; fan or blower may continue to run without ignition
Post-Purge / Ignition Control Fault
E17
Heater displays E17; may be associated with very high outlet water temperature
Outlet Temperature Sensor High Limit
E18
Heater shows E18; may not recognize calls for heat from spa or pool mode
Mode/Selector Switch Fault
E19
Heater displays E19; may occur after lightning or power surge
EEPROM / Configuration Memory Error
E20
Heater shows E20; may be accompanied by erratic temperature readings
Sensor Calibration / Out-of-Range Fault
Symptom
Display is on but completely blank or unreadable; heater may still run
Display / Keypad Failure
Symptom
Heater cabinet shows signs of rust and corrosion, especially near the base and around plumbing connections
Cabinet and Component Corrosion
Symptom
Heater cycles on and off frequently without reaching set temperature
Short Cycling
Symptom
Heater display shows erratic or jumping temperature readings without an error code
Intermittent Temperature Sensing
Symptom
Heater emits a strong gas smell around the unit, especially before ignition
Gas Leak or Delayed Ignition
Symptom
Heater fan or blower is extremely loud or squeals during operation
Blower Bearing Wear / Mechanical Noise
Symptom
Heater ignites with a loud boom or puff, sometimes blowing soot or flame out of the front
Delayed Ignition / Flashback
Symptom
Heater makes loud banging or popping noises during operation
Kettling / Boiling in Heat Exchanger
Symptom
Heater runs briefly and then shuts off when spa jets are turned on
Flow Interruption with Spa Mode
Symptom
Heater runs but does not heat water effectively; temperature rises very slowly
Reduced Heating Capacity
Symptom
Heater runs but pool temperature overshoots the setpoint significantly
Overheating / Thermostat Overshoot
Symptom
Heater shuts down when pump speed is reduced on a variable-speed pump
Flow-Dependent Shutdown
Symptom
Heater starts but shuts off after a few seconds; no error code displayed
Marginal Flame Sensing
Symptom
Heater trips the GFCI or breaker shortly after starting
Electrical Short or Ground Fault
Symptom
Heater will not respond to external pool automation commands, but works manually
Remote Control Interface Failure
Symptom
Heater will not start at all; no display, no lights, completely dead
No Power to Heater
Symptom
Soot or black staining visible on top of heater or around exhaust outlet
Sooting / Incomplete Combustion
Symptom
Water leaking from the bottom of the heater cabinet
Internal Water Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Heater will not fire; display shows E01 shortly after a call for heat
|
Ignition Failure Lockout | View Details |
| E02 |
Heater attempts to start but shuts down with E02 on the display
|
Flame Loss During Run | View Details |
| E03 |
Heater will not start; E03 appears immediately after call for heat
|
Pressure Switch Open / No Water Flow | View Details |
| E04 |
Heater shuts down with E04 after running briefly; may be hot to the touch
|
High Limit Switch Open / Overheat Condition | View Details |
| E05 |
Heater displays E05 and will not fire; often occurs in windy or confined installations
|
Flue / Exhaust Temperature Fault | View Details |
| E06 |
Heater shows E06 and will not respond to thermostat commands
|
Water Temperature Sensor Failure | View Details |
| E07 |
Display shows E07; heater will not start or shuts down quickly
|
Stack Flue Sensor Open/Short | View Details |
| E08 |
Heater shows E08 and does not respond to thermostat or spa/pool mode changes
|
Control Board Communication Error | View Details |
| E09 |
Heater displays E09; blower may not start on models with forced draft
|
Blower Failure / Air Proving Fault | View Details |
| E10 |
Heater shows E10 and will not fire; often associated with external automation systems
|
External Control / Thermostat Input Error | View Details |
| E11 |
Heater intermittently locks out with E11; may run normally at times
|
Low Gas Pressure / Gas Valve Fault | View Details |
| E12 |
Heater shows E12; display may be blank or flicker before code appears
|
Low Voltage / Power Supply Fault | View Details |
| E13 |
Heater displays E13; may be associated with very cold inlet water or sensor issues
|
Inlet/Outlet Temperature Differential Fault | View Details |
| E14 |
Heater shows E14 and will not fire; often after service or wiring changes
|
Polarity / Line Wiring Error | View Details |
| E15 |
Heater intermittently shows E15; may coincide with strong wind conditions
|
Flame Proving / Combustion Instability | View Details |
| E16 |
Heater shows E16; fan or blower may continue to run without ignition
|
Post-Purge / Ignition Control Fault | View Details |
| E17 |
Heater displays E17; may be associated with very high outlet water temperature
|
Outlet Temperature Sensor High Limit | View Details |
| E18 |
Heater shows E18; may not recognize calls for heat from spa or pool mode
|
Mode/Selector Switch Fault | View Details |
| E19 |
Heater displays E19; may occur after lightning or power surge
|
EEPROM / Configuration Memory Error | View Details |
| E20 |
Heater shows E20; may be accompanied by erratic temperature readings
|
Sensor Calibration / Out-of-Range Fault | View Details |
| – |
Display is on but completely blank or unreadable; heater may still run
|
Display / Keypad Failure | View Details |
| – |
Heater cabinet shows signs of rust and corrosion, especially near the base and around plumbing connections
|
Cabinet and Component Corrosion | View Details |
| – |
Heater cycles on and off frequently without reaching set temperature
|
Short Cycling | View Details |
| – |
Heater display shows erratic or jumping temperature readings without an error code
|
Intermittent Temperature Sensing | View Details |
| – |
Heater emits a strong gas smell around the unit, especially before ignition
|
Gas Leak or Delayed Ignition | View Details |
| – |
Heater fan or blower is extremely loud or squeals during operation
|
Blower Bearing Wear / Mechanical Noise | View Details |
| – |
Heater ignites with a loud boom or puff, sometimes blowing soot or flame out of the front
|
Delayed Ignition / Flashback | View Details |
| – |
Heater makes loud banging or popping noises during operation
|
Kettling / Boiling in Heat Exchanger | View Details |
| – |
Heater runs briefly and then shuts off when spa jets are turned on
|
Flow Interruption with Spa Mode | View Details |
| – |
Heater runs but does not heat water effectively; temperature rises very slowly
|
Reduced Heating Capacity | View Details |
| – |
Heater runs but pool temperature overshoots the setpoint significantly
|
Overheating / Thermostat Overshoot | View Details |
| – |
Heater shuts down when pump speed is reduced on a variable-speed pump
|
Flow-Dependent Shutdown | View Details |
| – |
Heater starts but shuts off after a few seconds; no error code displayed
|
Marginal Flame Sensing | View Details |
| – |
Heater trips the GFCI or breaker shortly after starting
|
Electrical Short or Ground Fault | View Details |
| – |
Heater will not respond to external pool automation commands, but works manually
|
Remote Control Interface Failure | View Details |
| – |
Heater will not start at all; no display, no lights, completely dead
|
No Power to Heater | View Details |
| – |
Soot or black staining visible on top of heater or around exhaust outlet
|
Sooting / Incomplete Combustion | View Details |
| – |
Water leaking from the bottom of the heater cabinet
|
Internal Water Leak | View Details |
No matching codes found
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