QCA Spas
QCA 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, the heater does not run, and the spa may run pumps in freeze-protection mode.
Cold Water Protection / Freeze Mode
dr
Display shows dr or DR; the heater shuts off; the spa may continue to run pumps.
Dry Heater or Insufficient Water in Heater Tube
dY
Display shows dY or DY; the spa may shut down the heater and display a dry heater warning.
Persistent Dry Heater Condition
EC
Display shows EC or ECO; the spa heats slowly and may not reach the set temperature quickly.
Economy Heating Mode Enabled
F1
Display shows F1; the filtration cycle or circulation pump is not operating as expected.
Filtration Cycle Configuration or Failure
F2
Display shows F2; abnormal filtration or flow condition; the spa may not maintain temperature.
Extended Filtration or Flow Error
FL
Display shows FL, spa may heat intermittently, heater icon may flash, jets run but the heater does not stay on.
Intermittent Flow Switch Operation
FLO
Display shows FLO or FL, heater will not turn on, jets may run briefly then stop, spa may shut down after a few minutes.
Low or No Water Flow Through Heater
HL
Display shows HL or HLo, the spa may shut down the heater and sometimes the pumps, and the water may not feel excessively hot.
High-Limit Trip Without True Overheat
Htr
Display shows HTR or HEAT FAIL; water does not heat to the set temperature.
Heater Failure or Heater Relay Fault
ICE
Display shows ICE, IC, or FR, pumps run periodically even when the spa is not in use, and the heater may run continuously.
Freeze Protection Mode Active
LOC
Display shows LOC or LOCK, buttons do not respond, and the spa may continue to run filtration cycles but the user cannot change settings.
Control Panel Lock / Child Lock Enabled
OH
Display shows OH or OHH, the spa shuts down, pumps may run briefly then stop, and water feels very hot near or above the set temperature.
Overheat Condition Detected by High-Limit Sensor
OHH
Display shows OHH, the spa immediately shuts down the heater and often the pumps, and may not reset until power is cycled.
Critical Overheat Lockout
P1
Display shows P1 error; the first pump will not start or shuts off quickly.
Pump 1 Drive or Overcurrent Fault
P2
Display shows P2 error; the second pump does not operate or trips the breaker when activated.
Pump 2 Drive or Overload Fault
Prr
Display shows PRR or PR; pumps may run briefly; the spa may not heat until the sequence completes.
Priming Mode / Pump Priming Routine
SE
Display shows SE or SEn; the spa may operate, but some functions are disabled.
Sensor Error or Sensor Out of Range
SN
Display shows SN, SN1, or SN2, the spa may not heat and may shut down the heater circuit.
Temperature Sensor Fault
SN1
Display shows SN1, the spa may not heat, and may run pumps but the heater icon stays off.
Primary Temperature Sensor Error
SN2
Display shows SN2, the spa may shut down or run with limited functions, and the heater may be disabled.
High-Limit or Secondary Sensor Error
—
Display is blank or shows only dashes, spa is unresponsive, pumps and heater do not run.
No Display / Control Panel Power Loss
Symptom
Air blower does not turn on or stops shortly after starting.
Air Blower Failure or Overheat
Symptom
Jets are weak or some jets do not have any flow even though the pump is running.
Reduced Jet Pressure / Flow Restriction
Symptom
Ozonator is not running, or no ozone bubbles are visible from the ozone jet.
Ozone Generator Failure or No Ozone Flow
Symptom
Pump hums but will not start, then may trip the breaker or shut off.
Seized Pump or Failed Start Capacitor
Symptom
Pump is very loud, grinding, or squealing during operation.
Pump Motor Bearing or Cavitation Noise
Symptom
Pump runs but there is no water movement from jets after draining and refilling.
Air Lock in Jet Pump
Symptom
Spa cabinet or base shows signs of water damage or constant dampness with no obvious equipment leak.
Hidden Plumbing Leak in Foam
Symptom
Spa does not heat, water stays at or near ambient temperature even though pumps run and set temperature is higher.
No Heat Condition
Symptom
Spa heats very slowly or cannot reach set temperature in cold weather.
Insufficient Heating Performance
Symptom
Spa lights do not turn on, but other functions work normally.
Lighting Circuit Failure
Symptom
Spa makes a gurgling or sucking noise at the skimmer, especially when jets are on high.
Skimmer Starvation / Low Water Level
Symptom
Spa shell surface around jets or the waterline shows white, crusty buildup.
Scale Formation / Hard Water Deposits
Symptom
Spa trips the GFCI breaker immediately or shortly after turning on.
Ground Fault or Short Circuit
Symptom
Spa will not power on at all, no lights on control panel, no pump activity.
Complete Power Loss
Symptom
Topside control panel buttons are unresponsive, or some buttons work intermittently.
Keypad / Topside Control Failure
Symptom
Water has a strong chemical or musty odor despite normal sanitizer levels.
Water Quality / Biofilm Contamination
Symptom
Water is cloudy or foamy even after filtration and chemical adjustment.
Cloudy / Foamy Water
Symptom
Water is leaking from around a specific jet in the spa shell.
Jet Body or Gasket Leak
Symptom
Water is leaking from around the light lens or spa light area.
Spa Light Niche or Lens Leak
Symptom
Water is leaking from the equipment bay under the spa.
Equipment Area Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| COL |
Display shows COL or COOL, the heater does not run, and the spa may run pumps in freeze-protection mode.
|
Cold Water Protection / Freeze Mode | View Details |
| dr |
Display shows dr or DR; the heater shuts off; the spa may continue to run pumps.
|
Dry Heater or Insufficient Water in Heater Tube | View Details |
| dY |
Display shows dY or DY; the spa may shut down the heater and display a dry heater warning.
|
Persistent Dry Heater Condition | View Details |
| EC |
Display shows EC or ECO; the spa heats slowly and may not reach the set temperature quickly.
|
Economy Heating Mode Enabled | View Details |
| F1 |
Display shows F1; the filtration cycle or circulation pump is not operating as expected.
|
Filtration Cycle Configuration or Failure | View Details |
| F2 |
Display shows F2; abnormal filtration or flow condition; the spa may not maintain temperature.
|
Extended Filtration or Flow Error | View Details |
| FL |
Display shows FL, spa may heat intermittently, heater icon may flash, jets run but the heater does not stay on.
|
Intermittent Flow Switch Operation | View Details |
| FLO |
Display shows FLO or FL, heater will not turn on, jets may run briefly then stop, spa may shut down after a few minutes.
|
Low or No Water Flow Through Heater | View Details |
| HL |
Display shows HL or HLo, the spa may shut down the heater and sometimes the pumps, and the water may not feel excessively hot.
|
High-Limit Trip Without True Overheat | View Details |
| Htr |
Display shows HTR or HEAT FAIL; water does not heat to the set temperature.
|
Heater Failure or Heater Relay Fault | View Details |
| ICE |
Display shows ICE, IC, or FR, pumps run periodically even when the spa is not in use, and the heater may run continuously.
|
Freeze Protection Mode Active | View Details |
| LOC |
Display shows LOC or LOCK, buttons do not respond, and the spa may continue to run filtration cycles but the user cannot change settings.
|
Control Panel Lock / Child Lock Enabled | View Details |
| OH |
Display shows OH or OHH, the spa shuts down, pumps may run briefly then stop, and water feels very hot near or above the set temperature.
|
Overheat Condition Detected by High-Limit Sensor | View Details |
| OHH |
Display shows OHH, the spa immediately shuts down the heater and often the pumps, and may not reset until power is cycled.
|
Critical Overheat Lockout | View Details |
| P1 |
Display shows P1 error; the first pump will not start or shuts off quickly.
|
Pump 1 Drive or Overcurrent Fault | View Details |
| P2 |
Display shows P2 error; the second pump does not operate or trips the breaker when activated.
|
Pump 2 Drive or Overload Fault | View Details |
| Prr |
Display shows PRR or PR; pumps may run briefly; the spa may not heat until the sequence completes.
|
Priming Mode / Pump Priming Routine | View Details |
| SE |
Display shows SE or SEn; the spa may operate, but some functions are disabled.
|
Sensor Error or Sensor Out of Range | View Details |
| SN |
Display shows SN, SN1, or SN2, the spa may not heat and may shut down the heater circuit.
|
Temperature Sensor Fault | View Details |
| SN1 |
Display shows SN1, the spa may not heat, and may run pumps but the heater icon stays off.
|
Primary Temperature Sensor Error | View Details |
| SN2 |
Display shows SN2, the spa may shut down or run with limited functions, and the heater may be disabled.
|
High-Limit or Secondary Sensor Error | View Details |
| — |
Display is blank or shows only dashes, spa is unresponsive, pumps and heater do not run.
|
No Display / Control Panel Power Loss | View Details |
| – |
Air blower does not turn on or stops shortly after starting.
|
Air Blower Failure or Overheat | View Details |
| – |
Jets are weak or some jets do not have any flow even though the pump is running.
|
Reduced Jet Pressure / Flow Restriction | View Details |
| – |
Ozonator is not running, or no ozone bubbles are visible from the ozone jet.
|
Ozone Generator Failure or No Ozone Flow | View Details |
| – |
Pump hums but will not start, then may trip the breaker or shut off.
|
Seized Pump or Failed Start Capacitor | View Details |
| – |
Pump is very loud, grinding, or squealing during operation.
|
Pump Motor Bearing or Cavitation Noise | View Details |
| – |
Pump runs but there is no water movement from jets after draining and refilling.
|
Air Lock in Jet Pump | View Details |
| – |
Spa cabinet or base shows signs of water damage or constant dampness with no obvious equipment leak.
|
Hidden Plumbing Leak in Foam | View Details |
| – |
Spa does not heat, water stays at or near ambient temperature even though pumps run and set temperature is higher.
|
No Heat Condition | View Details |
| – |
Spa heats very slowly or cannot reach set temperature in cold weather.
|
Insufficient Heating Performance | View Details |
| – |
Spa lights do not turn on, but other functions work normally.
|
Lighting Circuit Failure | View Details |
| – |
Spa makes a gurgling or sucking noise at the skimmer, especially when jets are on high.
|
Skimmer Starvation / Low Water Level | View Details |
| – |
Spa shell surface around jets or the waterline shows white, crusty buildup.
|
Scale Formation / Hard Water Deposits | View Details |
| – |
Spa trips the GFCI breaker immediately or shortly after turning on.
|
Ground Fault or Short Circuit | View Details |
| – |
Spa will not power on at all, no lights on control panel, no pump activity.
|
Complete Power Loss | View Details |
| – |
Topside control panel buttons are unresponsive, or some buttons work intermittently.
|
Keypad / Topside Control Failure | View Details |
| – |
Water has a strong chemical or musty odor despite normal sanitizer levels.
|
Water Quality / Biofilm Contamination | View Details |
| – |
Water is cloudy or foamy even after filtration and chemical adjustment.
|
Cloudy / Foamy Water | View Details |
| – |
Water is leaking from around a specific jet in the spa shell.
|
Jet Body or Gasket Leak | View Details |
| – |
Water is leaking from around the light lens or spa light area.
|
Spa Light Niche or Lens Leak | View Details |
| – |
Water is leaking from the equipment bay under the spa.
|
Equipment Area Leak | View Details |
No matching codes found
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