Sundance Spas
Sundance Spas Hot Tubs & Spas Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
Advertisements
BLB
Display shows BLB; spa may disable the UV or CLEARRAY bulb system.
UV/CLEARRAY Bulb Life Expired
COL
Display shows COL; spa may limit heating or run pumps intermittently.
Cold Water Protection / Low Temperature Warning
COOL
Display shows COOL; spa is below set temperature and may temporarily suspend heating.
Cool Water Protection / Temperature Drop Detected
dr
Display shows dr; heater is disabled and spa may not heat.
Dry Heater Detected (Insufficient Water in Heater Tube)
dY
Display shows dY; spa may shut down heater and display a dry heater warning.
Dry Heater Confirmed (Repeated Dry Condition)
FLO
Control panel displays FLO and the heater will not turn on; circulation pump may or may not be running.
Flow Switch Open (Insufficient Water Flow)
FLO2
Display shows FLO2 and spa may shut down heater and pumps; often occurs when jets pump is running.
Flow Switch Closed When It Should Be Open
HFL
Display shows HFL; spa may shut down heater but pumps still run.
Heater Flow Low (Heater Flow Protection)
HOT
Display shows HOT; spa temperature is above safe operating range and heater is disabled.
Over-Temperature Condition (Water Too Hot)
ICE
Display shows ICE or IC; spa may automatically run pumps and heater even when not in use.
Freeze Protection Mode Activated
LF
Display shows LF; spa may shut down heater for an extended period.
Persistent Low Flow Through Heater
LOC
Display shows LOC or a lock icon; buttons do not respond or only limited functions work.
Panel Lock / Child Lock Activated
OH
Display shows OH or OHH and spa shuts down; water may feel very hot near heater or in footwell.
Overheat Condition Detected by High-Limit Sensor
PF
Display shows PF or PFL; spa may shut down or reset unexpectedly.
Power Failure / Power Fluctuation Detected
PSoC
Display shows PSoC or similar processor/system error; spa may be unresponsive or reboot repeatedly.
Control System Firmware / Processor Fault
SE
Display shows SE or SENSOR ERROR; spa may not heat.
General Sensor Error (Temperature or High-Limit)
SN1
Display shows SN1 and spa may not heat; pumps may still operate.
Water Temperature Sensor (Thermistor) Fault
SN2
Display shows SN2 and spa may shut down heater; pumps may still run.
High-Limit Temperature Sensor Fault
— — —
Display shows three dashes (---) or similar and spa will not heat; pumps may still operate.
Sensor Out of Range / No Valid Temperature Reading
Symptom
Air blower does not turn on or shuts off quickly; jets still function normally.
Air Blower Motor Failure or Overheat
Symptom
Air control knobs are difficult to turn or do not change jet air flow.
Air Control Valve Failure
Symptom
Buttons on the control panel respond intermittently or activate the wrong function.
Keypad Membrane or Interface Failure
Symptom
Circulation pump is not running; water at heater return is still and spa may show intermittent flow-related codes.
Circulation Pump Failure
Symptom
Diverter valve is hard to turn or stuck; certain seats receive no flow.
Diverter Valve Internal Wear or Obstruction
Symptom
Loud grinding, squealing, or rattling noise from the equipment bay when jets are on.
Pump Motor Bearing or Cavitation Noise
Symptom
Main jet pump hums but does not start; may trip breaker after a few seconds.
Jet Pump Motor Seized or Capacitor Failure
Symptom
Ozone or CLEARRAY indicator is off and water quality declines faster than normal; no specific error code displayed.
Ozone Generator or CLEARRAY UV System Failure
Symptom
Persistent air bubbles from the filter area or suction fitting even when jets are off.
Suction Air Leak on Circulation Line
Symptom
Spa cabinet or base shows signs of rot, sagging, or structural weakness; doors may not close properly.
Cabinet/Base Structural Deterioration
Symptom
Spa frequently overheats in summer or when set to lower temperatures; water is warmer than set point.
Heat Creep / Overheating from Pump Operation
Symptom
Spa is leaking water inside the equipment bay; water collects under pumps or heater.
Internal Plumbing or Component Leak
Symptom
Spa lights do not turn on or only some LEDs work; other functions are normal.
LED Lighting System Failure
Symptom
Spa trips the GFCI breaker immediately or within a few seconds of turning it on.
Ground Fault / Electrical Short
Symptom
Spa water has very weak jet pressure; bubbles may be present but massage is poor.
Restricted Flow or Air Mixture Issue
Symptom
Spa water is cloudy, foamy, or has a strong odor despite normal filtration cycles.
Water Quality / Filtration Inefficiency
Symptom
Spa will not heat; water stays at or near ambient temperature even though pumps run and no error code is displayed.
Heater Element Failure
Symptom
Strong chemical or burning plastic smell from the equipment bay; components may appear discolored.
Overheating Electrical Component
Symptom
Topside control panel is blank or flickering; spa may still run on a basic cycle or be completely unresponsive.
Topside Control Panel or Low-Voltage Power Fault
Symptom
Water leaking from around a jet in the spa shell; damp insulation or water under the cabinet near a specific jet.
Jet Body or Gasket Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| BLB |
Display shows BLB; spa may disable the UV or CLEARRAY bulb system.
|
UV/CLEARRAY Bulb Life Expired | View Details |
| COL |
Display shows COL; spa may limit heating or run pumps intermittently.
|
Cold Water Protection / Low Temperature Warning | View Details |
| COOL |
Display shows COOL; spa is below set temperature and may temporarily suspend heating.
|
Cool Water Protection / Temperature Drop Detected | View Details |
| dr |
Display shows dr; heater is disabled and spa may not heat.
|
Dry Heater Detected (Insufficient Water in Heater Tube) | View Details |
| dY |
Display shows dY; spa may shut down heater and display a dry heater warning.
|
Dry Heater Confirmed (Repeated Dry Condition) | View Details |
| FLO |
Control panel displays FLO and the heater will not turn on; circulation pump may or may not be running.
|
Flow Switch Open (Insufficient Water Flow) | View Details |
| FLO2 |
Display shows FLO2 and spa may shut down heater and pumps; often occurs when jets pump is running.
|
Flow Switch Closed When It Should Be Open | View Details |
| HFL |
Display shows HFL; spa may shut down heater but pumps still run.
|
Heater Flow Low (Heater Flow Protection) | View Details |
| HOT |
Display shows HOT; spa temperature is above safe operating range and heater is disabled.
|
Over-Temperature Condition (Water Too Hot) | View Details |
| ICE |
Display shows ICE or IC; spa may automatically run pumps and heater even when not in use.
|
Freeze Protection Mode Activated | View Details |
| LF |
Display shows LF; spa may shut down heater for an extended period.
|
Persistent Low Flow Through Heater | View Details |
| LOC |
Display shows LOC or a lock icon; buttons do not respond or only limited functions work.
|
Panel Lock / Child Lock Activated | View Details |
| OH |
Display shows OH or OHH and spa shuts down; water may feel very hot near heater or in footwell.
|
Overheat Condition Detected by High-Limit Sensor | View Details |
| PF |
Display shows PF or PFL; spa may shut down or reset unexpectedly.
|
Power Failure / Power Fluctuation Detected | View Details |
| PSoC |
Display shows PSoC or similar processor/system error; spa may be unresponsive or reboot repeatedly.
|
Control System Firmware / Processor Fault | View Details |
| SE |
Display shows SE or SENSOR ERROR; spa may not heat.
|
General Sensor Error (Temperature or High-Limit) | View Details |
| SN1 |
Display shows SN1 and spa may not heat; pumps may still operate.
|
Water Temperature Sensor (Thermistor) Fault | View Details |
| SN2 |
Display shows SN2 and spa may shut down heater; pumps may still run.
|
High-Limit Temperature Sensor Fault | View Details |
| — — — |
Display shows three dashes (---) or similar and spa will not heat; pumps may still operate.
|
Sensor Out of Range / No Valid Temperature Reading | View Details |
| – |
Air blower does not turn on or shuts off quickly; jets still function normally.
|
Air Blower Motor Failure or Overheat | View Details |
| – |
Air control knobs are difficult to turn or do not change jet air flow.
|
Air Control Valve Failure | View Details |
| – |
Buttons on the control panel respond intermittently or activate the wrong function.
|
Keypad Membrane or Interface Failure | View Details |
| – |
Circulation pump is not running; water at heater return is still and spa may show intermittent flow-related codes.
|
Circulation Pump Failure | View Details |
| – |
Diverter valve is hard to turn or stuck; certain seats receive no flow.
|
Diverter Valve Internal Wear or Obstruction | View Details |
| – |
Loud grinding, squealing, or rattling noise from the equipment bay when jets are on.
|
Pump Motor Bearing or Cavitation Noise | View Details |
| – |
Main jet pump hums but does not start; may trip breaker after a few seconds.
|
Jet Pump Motor Seized or Capacitor Failure | View Details |
| – |
Ozone or CLEARRAY indicator is off and water quality declines faster than normal; no specific error code displayed.
|
Ozone Generator or CLEARRAY UV System Failure | View Details |
| – |
Persistent air bubbles from the filter area or suction fitting even when jets are off.
|
Suction Air Leak on Circulation Line | View Details |
| – |
Spa cabinet or base shows signs of rot, sagging, or structural weakness; doors may not close properly.
|
Cabinet/Base Structural Deterioration | View Details |
| – |
Spa frequently overheats in summer or when set to lower temperatures; water is warmer than set point.
|
Heat Creep / Overheating from Pump Operation | View Details |
| – |
Spa is leaking water inside the equipment bay; water collects under pumps or heater.
|
Internal Plumbing or Component Leak | View Details |
| – |
Spa lights do not turn on or only some LEDs work; other functions are normal.
|
LED Lighting System Failure | View Details |
| – |
Spa trips the GFCI breaker immediately or within a few seconds of turning it on.
|
Ground Fault / Electrical Short | View Details |
| – |
Spa water has very weak jet pressure; bubbles may be present but massage is poor.
|
Restricted Flow or Air Mixture Issue | View Details |
| – |
Spa water is cloudy, foamy, or has a strong odor despite normal filtration cycles.
|
Water Quality / Filtration Inefficiency | View Details |
| – |
Spa will not heat; water stays at or near ambient temperature even though pumps run and no error code is displayed.
|
Heater Element Failure | View Details |
| – |
Strong chemical or burning plastic smell from the equipment bay; components may appear discolored.
|
Overheating Electrical Component | View Details |
| – |
Topside control panel is blank or flickering; spa may still run on a basic cycle or be completely unresponsive.
|
Topside Control Panel or Low-Voltage Power Fault | View Details |
| – |
Water leaking from around a jet in the spa shell; damp insulation or water under the cabinet near a specific jet.
|
Jet Body or Gasket Leak | View Details |
No matching codes found
Advertisements