Artisan Spas
Artisan Spas Hot Tubs & Spas Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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COL
Display shows COL or COOL, heater is off and spa indicates water is below acceptable temperature range.
Low Water Temperature / Freeze Protection Active
DR
Display shows DR or DRY, heater is disabled, spa may run pumps but will not heat.
Dry Heater or Insufficient Water in Heater Tube
DY
Display shows DY or DRY Y, spa indicates dry heater condition and may lock out heating.
Persistent Dry Fire Protection
EC
Display shows EC or ECON, spa heats only during filter cycles and may not maintain set temperature.
Economy Heating Mode Enabled
F2
Display shows F2, indicating a filter cycle or flow-related configuration, spa may run pump more frequently.
Filter Cycle 2 or Flow Configuration Indicator
FLC
Display shows FLC or FLO flashing intermittently, heater cycles on and off, sometimes runs but trips back to flow error.
Intermittent Flow Switch Signal
FLO
Display shows FLO or FL, pumps may run briefly then stop, heater will not turn on, possible blinking heat indicator.
Low or No Water Flow Through Heater
FLO2
Display shows FLO2 or FL2, often associated with a second pump or secondary flow circuit, heater may shut down.
Secondary Flow Circuit Error
GFCI
Display may go blank; external GFCI breaker or outlet trips immediately or shortly after spa is turned on.
Ground Fault or Leakage Current Detected
HL
Display shows HL or HLo, spa stops heating and may shut down pumps intermittently.
High-Limit Trip Due to Localized Overheating
ICE
Display shows ICE or IC, pumps may run automatically even when spa is not in use.
Freeze Protection Mode
LOC
Display shows LOC or LOCK, buttons on the topside panel do not respond.
Panel Lock / Child Lock Activated
OH
Display shows OH or OHH, spa shuts down, pumps may run briefly then stop, water feels excessively hot near heater outlet.
Overheat Condition Detected
OHH
Display shows OHH or HH, spa immediately shuts down heater and pumps, water may be extremely hot or only warm.
Critical Overheat / High-High Limit Trip
Prr
Display shows PRR or PR, pumps may run in a priming mode and spa may not heat until priming is complete.
Priming Mode / Pump Priming Error
PSo
Display shows PSO or PS, pump may not start or may shut off quickly after starting.
Pressure Switch Open When Pump Should Be Running
SE
Display shows SE or SEr, spa may not respond to keypad inputs or may behave erratically.
Sensor or System Error
SLP
Display shows SLP or SL, spa maintains a lower temperature and heats only during programmed cycles.
Sleep Mode Enabled
SN1
Display shows SN1 or SENS1, spa may not heat or may shut down, temperature reading may be erratic.
Primary Temperature Sensor Failure
SN2
Display shows SN2 or SENS2, spa may run but heater may be disabled or cycle erratically.
High-Limit or Secondary Sensor Failure
Symptom
Air blower does not turn on or shuts off quickly after starting.
Air Blower Failure or Overheat
Symptom
Display is dim, flickering, or unreadable, but spa still runs.
Display Backlight or LCD Failure
Symptom
High-pitched whining or grinding noise from pump area during operation.
Worn Pump Bearings or Cavitation
Symptom
Jets are weak or have very little pressure, even though the pump is running.
Low Jet Pressure
Symptom
Ozone indicator is on but no bubbles are visible from the ozone injector.
Ozonator or Injector Failure
Symptom
Pump hums but does not start, or trips breaker when trying to start.
Pump Motor Seized or Start Circuit Failure
Symptom
Spa does not heat, water stays at or near ambient temperature, but pumps and jets work normally.
No Heat Condition
Symptom
Spa is leaking water inside the equipment bay, puddles form under the spa.
Internal Plumbing or Component Leak
Symptom
Spa light does not turn on, but all other functions work.
Spa Light Circuit Failure
Symptom
Spa makes loud banging or knocking noises when pump is running.
Hydraulic Hammer or Loose Internal Components
Symptom
Spa trips breaker only when a specific pump or function is activated.
Shorted Component or Overload on Specific Circuit
Symptom
Spa water has a strong burning or electrical smell from the equipment area.
Overheating Electrical Component
Symptom
Spa water has a strong musty or moldy odor, even after adding sanitizer.
Biofilm and Organic Contamination
Symptom
Spa water is cloudy and does not clear with normal filtration.
Suspended Particles / Poor Filtration
Symptom
Spa water is foamy with bubbles that do not dissipate quickly.
Excess Surfactants and Contaminants
Symptom
Spa will not power on at all, no lights on topside panel, no pump activity.
No Power / Dead Spa
Symptom
Topside control panel buttons are unresponsive or only some buttons work.
Keypad / Topside Control Failure
Symptom
Water is leaking from around the pump area, especially when jets are on.
Pump Seal or Union Leak
Symptom
Water level drops over time with no visible leaks in equipment bay.
Shell, Jet Body, or Plumbing Leak Behind Cabinet
Symptom
Water temperature fluctuates widely, overshooting or undershooting the set temperature.
Temperature Regulation Instability
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| COL |
Display shows COL or COOL, heater is off and spa indicates water is below acceptable temperature range.
|
Low Water Temperature / Freeze Protection Active | View Details |
| DR |
Display shows DR or DRY, heater is disabled, spa may run pumps but will not heat.
|
Dry Heater or Insufficient Water in Heater Tube | View Details |
| DY |
Display shows DY or DRY Y, spa indicates dry heater condition and may lock out heating.
|
Persistent Dry Fire Protection | View Details |
| EC |
Display shows EC or ECON, spa heats only during filter cycles and may not maintain set temperature.
|
Economy Heating Mode Enabled | View Details |
| F2 |
Display shows F2, indicating a filter cycle or flow-related configuration, spa may run pump more frequently.
|
Filter Cycle 2 or Flow Configuration Indicator | View Details |
| FLC |
Display shows FLC or FLO flashing intermittently, heater cycles on and off, sometimes runs but trips back to flow error.
|
Intermittent Flow Switch Signal | View Details |
| FLO |
Display shows FLO or FL, pumps may run briefly then stop, heater will not turn on, possible blinking heat indicator.
|
Low or No Water Flow Through Heater | View Details |
| FLO2 |
Display shows FLO2 or FL2, often associated with a second pump or secondary flow circuit, heater may shut down.
|
Secondary Flow Circuit Error | View Details |
| GFCI |
Display may go blank; external GFCI breaker or outlet trips immediately or shortly after spa is turned on.
|
Ground Fault or Leakage Current Detected | View Details |
| HL |
Display shows HL or HLo, spa stops heating and may shut down pumps intermittently.
|
High-Limit Trip Due to Localized Overheating | View Details |
| ICE |
Display shows ICE or IC, pumps may run automatically even when spa is not in use.
|
Freeze Protection Mode | View Details |
| LOC |
Display shows LOC or LOCK, buttons on the topside panel do not respond.
|
Panel Lock / Child Lock Activated | View Details |
| OH |
Display shows OH or OHH, spa shuts down, pumps may run briefly then stop, water feels excessively hot near heater outlet.
|
Overheat Condition Detected | View Details |
| OHH |
Display shows OHH or HH, spa immediately shuts down heater and pumps, water may be extremely hot or only warm.
|
Critical Overheat / High-High Limit Trip | View Details |
| Prr |
Display shows PRR or PR, pumps may run in a priming mode and spa may not heat until priming is complete.
|
Priming Mode / Pump Priming Error | View Details |
| PSo |
Display shows PSO or PS, pump may not start or may shut off quickly after starting.
|
Pressure Switch Open When Pump Should Be Running | View Details |
| SE |
Display shows SE or SEr, spa may not respond to keypad inputs or may behave erratically.
|
Sensor or System Error | View Details |
| SLP |
Display shows SLP or SL, spa maintains a lower temperature and heats only during programmed cycles.
|
Sleep Mode Enabled | View Details |
| SN1 |
Display shows SN1 or SENS1, spa may not heat or may shut down, temperature reading may be erratic.
|
Primary Temperature Sensor Failure | View Details |
| SN2 |
Display shows SN2 or SENS2, spa may run but heater may be disabled or cycle erratically.
|
High-Limit or Secondary Sensor Failure | View Details |
| – |
Air blower does not turn on or shuts off quickly after starting.
|
Air Blower Failure or Overheat | View Details |
| – |
Display is dim, flickering, or unreadable, but spa still runs.
|
Display Backlight or LCD Failure | View Details |
| – |
High-pitched whining or grinding noise from pump area during operation.
|
Worn Pump Bearings or Cavitation | View Details |
| – |
Jets are weak or have very little pressure, even though the pump is running.
|
Low Jet Pressure | View Details |
| – |
Ozone indicator is on but no bubbles are visible from the ozone injector.
|
Ozonator or Injector Failure | View Details |
| – |
Pump hums but does not start, or trips breaker when trying to start.
|
Pump Motor Seized or Start Circuit Failure | View Details |
| – |
Spa does not heat, water stays at or near ambient temperature, but pumps and jets work normally.
|
No Heat Condition | View Details |
| – |
Spa is leaking water inside the equipment bay, puddles form under the spa.
|
Internal Plumbing or Component Leak | View Details |
| – |
Spa light does not turn on, but all other functions work.
|
Spa Light Circuit Failure | View Details |
| – |
Spa makes loud banging or knocking noises when pump is running.
|
Hydraulic Hammer or Loose Internal Components | View Details |
| – |
Spa trips breaker only when a specific pump or function is activated.
|
Shorted Component or Overload on Specific Circuit | View Details |
| – |
Spa water has a strong burning or electrical smell from the equipment area.
|
Overheating Electrical Component | View Details |
| – |
Spa water has a strong musty or moldy odor, even after adding sanitizer.
|
Biofilm and Organic Contamination | View Details |
| – |
Spa water is cloudy and does not clear with normal filtration.
|
Suspended Particles / Poor Filtration | View Details |
| – |
Spa water is foamy with bubbles that do not dissipate quickly.
|
Excess Surfactants and Contaminants | View Details |
| – |
Spa will not power on at all, no lights on topside panel, no pump activity.
|
No Power / Dead Spa | View Details |
| – |
Topside control panel buttons are unresponsive or only some buttons work.
|
Keypad / Topside Control Failure | View Details |
| – |
Water is leaking from around the pump area, especially when jets are on.
|
Pump Seal or Union Leak | View Details |
| – |
Water level drops over time with no visible leaks in equipment bay.
|
Shell, Jet Body, or Plumbing Leak Behind Cabinet | View Details |
| – |
Water temperature fluctuates widely, overshooting or undershooting the set temperature.
|
Temperature Regulation Instability | View Details |
No matching codes found
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