Jacuzzi 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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BLB
Display shows BLB or BLOWER ERROR; air blower does not run.
Air Blower Failure
CF
Display shows CF or CLEAN FILTER reminder; spa otherwise operates normally.
Filter Maintenance Reminder
COL
Display shows COL or COOL and heater does not run; spa may be in freeze-protection or cool-down mode.
Cool or Freeze Protection Mode Active
DR
Display shows DR or DRY and heater is disabled; may be followed by HL or OHS.
Dry-Fire or Insufficient Water in Heater
DY
Display shows DY or DRY Y and spa will not heat; often after DR events.
Dry Heater Lockout
EC
Display shows EC or ECON and spa heats slowly or not to the expected temperature.
Economy or Energy-Saving Mode Enabled
FL2
Display shows FL2 or FLO2 and heater will not engage; may occur intermittently when jets are used.
Flow Switch Stuck Closed or Shorted
FLO
Display shows FLO or FL1 and the hot tub will not heat; jets may run briefly then stop.
Low or No Water Flow Through Heater
HFL
Display shows HFL and spa may shut down heater; often accompanied by intermittent OH codes.
Heater Flow Low Detected
HL
Display shows HL and spa shuts down heater; may be accompanied by DR or LF codes.
Heater High-Limit Trip Due to Low Flow
ICE
Display shows ICE or FR and pumps run automatically even when spa is not in use.
Freeze Protection Mode
LF
Display shows LF or LOW FLOW and spa stops heating after repeated attempts.
Persistent Low Flow Lockout
LOC
Display shows LOC or LOCK and buttons do not respond to presses.
Panel Lock or Child Lock Enabled
OH
Display shows OH or OHH and spa shuts down; water feels excessively hot near heater return.
Overheat Condition Detected
OHS
Display shows OHS or OH2 and spa shuts down; often triggered by high-limit sensor rather than main temperature sensor.
High-Limit Overheat Trip
P1
Display shows P1 ERROR or PUMP1 FAIL; primary jet pump does not run when commanded.
Pump 1 Failure or Overload
P2
Display shows P2 ERROR or PUMP2 FAIL; secondary jet pump does not operate.
Pump 2 Failure or Overload
PF
Display shows PF or PFL and spa may shut down unexpectedly or not respond to controls.
Power Failure or Line Voltage Error
PR
Display shows PR or PUR and pumps run automatically when power is first applied; spa does not immediately heat.
Priming Mode Active
SE
Display shows SE or SESH and controls may be locked or unresponsive.
Sensor or Software Error
SN1
Display shows SN1 or SENSOR1 and spa may not heat or may shut down.
Water Temperature Sensor Error
SN2
Display shows SN2 or SENSOR2; spa may shut down or display OH/OHS intermittently.
High-Limit Sensor Error
—
Display is blank or shows only dashes; spa is unresponsive.
No Display / Control Panel Power Loss
Symptom
Air blower is very loud, surges, or spits water from air injectors.
Air Blower Water Intrusion or Restriction
Symptom
Excessive vibration or banging noise from the Jacuzzi spa when jets are on.
Pump Vibration or Loose Mounting
Symptom
Jacuzzi spa cabinet panels are warped, rotting, or separating from the frame.
Cabinet Structural Deterioration
Symptom
Jacuzzi spa cover is very heavy, waterlogged, and difficult to open.
Waterlogged Spa Cover
Symptom
Jacuzzi spa lights do not turn on or some LEDs are out while other functions work normally.
Lighting Circuit or LED Failure
Symptom
Jacuzzi spa trips the GFCI breaker immediately or shortly after turning on.
Ground Fault or Short Circuit
Symptom
Jacuzzi spa water is cloudy, foamy, or has a strong chemical or musty odor.
Water Quality / Sanitation Problem
Symptom
Jacuzzi spa will not power on at all; no lights, no display, no pump operation.
No Power / Dead Spa
Symptom
Jets are weak or have very little pressure even though the pump is running.
Reduced Jet Flow / Low Pressure
Symptom
One or more jets do not work at all while others are strong.
Individual Jet Blockage or Shut-Off
Symptom
Pump hums but does not start; may trip the breaker after a few seconds.
Seized Pump Motor or Failed Start Capacitor
Symptom
Pump is running but there is no water movement from the jets.
Loss of Prime / Air-Locked Pump
Symptom
Pump makes loud grinding, squealing, or rattling noises during operation.
Pump Bearing or Cavitation Noise
Symptom
Strong burning or electrical smell coming from the equipment bay.
Overheating Electrical Component
Symptom
Topside control panel buttons are unresponsive or only some buttons work intermittently.
Topside Control Panel Failure
Symptom
Water is not heating; temperature remains far below the set point even after many hours.
No Heat Condition
Symptom
Water leaking from around a specific jet in the shell or from the cabinet directly below a jet location.
Jet Body or Gasket Leak
Symptom
Water leaking from the base or corners of the Jacuzzi spa cabinet, with no obvious source in the equipment bay.
Internal Plumbing or Manifold Leak in Foam
Symptom
Water leaking from under the Jacuzzi hot tub cabinet, especially near the equipment bay.
Plumbing or Component Leak in Equipment Area
Symptom
Water overheats beyond the set temperature without showing an OH code; spa feels too hot.
Runaway Heating / Thermostat Overshoot
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| BLB |
Display shows BLB or BLOWER ERROR; air blower does not run.
|
Air Blower Failure | View Details |
| CF |
Display shows CF or CLEAN FILTER reminder; spa otherwise operates normally.
|
Filter Maintenance Reminder | View Details |
| COL |
Display shows COL or COOL and heater does not run; spa may be in freeze-protection or cool-down mode.
|
Cool or Freeze Protection Mode Active | View Details |
| DR |
Display shows DR or DRY and heater is disabled; may be followed by HL or OHS.
|
Dry-Fire or Insufficient Water in Heater | View Details |
| DY |
Display shows DY or DRY Y and spa will not heat; often after DR events.
|
Dry Heater Lockout | View Details |
| EC |
Display shows EC or ECON and spa heats slowly or not to the expected temperature.
|
Economy or Energy-Saving Mode Enabled | View Details |
| FL2 |
Display shows FL2 or FLO2 and heater will not engage; may occur intermittently when jets are used.
|
Flow Switch Stuck Closed or Shorted | View Details |
| FLO |
Display shows FLO or FL1 and the hot tub will not heat; jets may run briefly then stop.
|
Low or No Water Flow Through Heater | View Details |
| HFL |
Display shows HFL and spa may shut down heater; often accompanied by intermittent OH codes.
|
Heater Flow Low Detected | View Details |
| HL |
Display shows HL and spa shuts down heater; may be accompanied by DR or LF codes.
|
Heater High-Limit Trip Due to Low Flow | View Details |
| ICE |
Display shows ICE or FR and pumps run automatically even when spa is not in use.
|
Freeze Protection Mode | View Details |
| LF |
Display shows LF or LOW FLOW and spa stops heating after repeated attempts.
|
Persistent Low Flow Lockout | View Details |
| LOC |
Display shows LOC or LOCK and buttons do not respond to presses.
|
Panel Lock or Child Lock Enabled | View Details |
| OH |
Display shows OH or OHH and spa shuts down; water feels excessively hot near heater return.
|
Overheat Condition Detected | View Details |
| OHS |
Display shows OHS or OH2 and spa shuts down; often triggered by high-limit sensor rather than main temperature sensor.
|
High-Limit Overheat Trip | View Details |
| P1 |
Display shows P1 ERROR or PUMP1 FAIL; primary jet pump does not run when commanded.
|
Pump 1 Failure or Overload | View Details |
| P2 |
Display shows P2 ERROR or PUMP2 FAIL; secondary jet pump does not operate.
|
Pump 2 Failure or Overload | View Details |
| PF |
Display shows PF or PFL and spa may shut down unexpectedly or not respond to controls.
|
Power Failure or Line Voltage Error | View Details |
| PR |
Display shows PR or PUR and pumps run automatically when power is first applied; spa does not immediately heat.
|
Priming Mode Active | View Details |
| SE |
Display shows SE or SESH and controls may be locked or unresponsive.
|
Sensor or Software Error | View Details |
| SN1 |
Display shows SN1 or SENSOR1 and spa may not heat or may shut down.
|
Water Temperature Sensor Error | View Details |
| SN2 |
Display shows SN2 or SENSOR2; spa may shut down or display OH/OHS intermittently.
|
High-Limit Sensor Error | View Details |
| — |
Display is blank or shows only dashes; spa is unresponsive.
|
No Display / Control Panel Power Loss | View Details |
| – |
Air blower is very loud, surges, or spits water from air injectors.
|
Air Blower Water Intrusion or Restriction | View Details |
| – |
Excessive vibration or banging noise from the Jacuzzi spa when jets are on.
|
Pump Vibration or Loose Mounting | View Details |
| – |
Jacuzzi spa cabinet panels are warped, rotting, or separating from the frame.
|
Cabinet Structural Deterioration | View Details |
| – |
Jacuzzi spa cover is very heavy, waterlogged, and difficult to open.
|
Waterlogged Spa Cover | View Details |
| – |
Jacuzzi spa lights do not turn on or some LEDs are out while other functions work normally.
|
Lighting Circuit or LED Failure | View Details |
| – |
Jacuzzi spa trips the GFCI breaker immediately or shortly after turning on.
|
Ground Fault or Short Circuit | View Details |
| – |
Jacuzzi spa water is cloudy, foamy, or has a strong chemical or musty odor.
|
Water Quality / Sanitation Problem | View Details |
| – |
Jacuzzi spa will not power on at all; no lights, no display, no pump operation.
|
No Power / Dead Spa | View Details |
| – |
Jets are weak or have very little pressure even though the pump is running.
|
Reduced Jet Flow / Low Pressure | View Details |
| – |
One or more jets do not work at all while others are strong.
|
Individual Jet Blockage or Shut-Off | View Details |
| – |
Pump hums but does not start; may trip the breaker after a few seconds.
|
Seized Pump Motor or Failed Start Capacitor | View Details |
| – |
Pump is running but there is no water movement from the jets.
|
Loss of Prime / Air-Locked Pump | View Details |
| – |
Pump makes loud grinding, squealing, or rattling noises during operation.
|
Pump Bearing or Cavitation Noise | View Details |
| – |
Strong burning or electrical smell coming from the equipment bay.
|
Overheating Electrical Component | View Details |
| – |
Topside control panel buttons are unresponsive or only some buttons work intermittently.
|
Topside Control Panel Failure | View Details |
| – |
Water is not heating; temperature remains far below the set point even after many hours.
|
No Heat Condition | View Details |
| – |
Water leaking from around a specific jet in the shell or from the cabinet directly below a jet location.
|
Jet Body or Gasket Leak | View Details |
| – |
Water leaking from the base or corners of the Jacuzzi spa cabinet, with no obvious source in the equipment bay.
|
Internal Plumbing or Manifold Leak in Foam | View Details |
| – |
Water leaking from under the Jacuzzi hot tub cabinet, especially near the equipment bay.
|
Plumbing or Component Leak in Equipment Area | View Details |
| – |
Water overheats beyond the set temperature without showing an OH code; spa feels too hot.
|
Runaway Heating / Thermostat Overshoot | View Details |
No matching codes found
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