PDC Spas
PDC 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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CF
Display shows CF or CLn reminder; spa otherwise operates normally.
Filter cleaning reminder / maintenance alert
COL
Display shows COL or COOL and heater is disabled; water temperature is low.
Cold water protection / cool condition detected
dr
Display shows dr or DR and heater shuts down; spa may attempt to restart.
Dry heater or inadequate water in heater tube
dY
Display shows dY or DY after dr, indicating repeated dry condition.
Persistent dry heater lockout
EC
Display shows EC or ECON and spa does not heat continuously to set temperature.
Economy or energy-saving mode enabled
FLC
Display shows FLC or FL2 and spa may run pumps but heater is disabled.
Flow switch closed when it should be open (stuck or shorted flow switch)
FLO
Display shows FLO or FL1 and heater will not run; may show intermittent heating.
Insufficient water flow or flow switch open
HL
Display shows HL or HLo and spa shuts down or disables heater.
Hi-limit trip due to localized heater over-temperature
ICE
Display shows ICE or IC and pumps run automatically even when spa is not in use.
Freeze protection mode active
LOC
Display shows LOC or LOCK and buttons do not respond.
Panel lock or child lock enabled
OH
Display shows OH or OHH and spa shuts down; water may feel excessively hot.
Overheat condition detected by temperature or hi-limit sensor
Prr
Display shows Prr or PR and spa may not heat or may shut down unexpectedly.
Pressure or pump-related error (pump relay or pressure sensing fault)
PSoC
Display shows PSOC or PS indicating pressure switch open with pump on.
Pressure/flow switch open when pump is running
SE
Display shows SE or SENSOR and spa may shut down or behave erratically.
General sensor error or sensor circuit fault
SLP
Display shows SLP or SL and spa only heats during filter cycles; water may feel cool.
Sleep mode enabled
Sn1
Control panel displays Sn1 and spa will not heat or may shut down.
Primary temperature sensor (sensor 1) failure or out-of-range reading
Sn2
Control panel displays Sn2 and spa may not heat or may shut down.
Secondary temperature sensor (sensor 2 or hi-limit sensor) failure or out-of-range reading
— —
Display shows dashes or blank segments instead of temperature; spa may not respond.
No temperature data / communication fault between topside and control pack
Symptom
Air controls do not introduce air into jets; jets feel flat with only water flow.
Air induction failure
Symptom
Circulation pump is noisy, rattling, or grinding during operation.
Worn circulation pump bearings or cavitation
Symptom
Jets are weak or some seats have very little water pressure.
Reduced jet flow
Symptom
Main jet pump does not start; pressing Jets button causes only a click or humming sound.
Jet pump motor failure or seized impeller
Symptom
One or more jets have completely stopped flowing while others work normally.
Individual jet blockage or failure
Symptom
Ozone indicator is on but there is no ozone smell or visible bubbles from ozone injector.
Ozone generator failure or injector blockage
Symptom
Spa cabinet or shell vibrates excessively when jets are on high speed.
Excessive vibration from pump or misaligned plumbing
Symptom
Spa cover is extremely heavy, sagging, and difficult to remove; condensation and heat loss are evident.
Waterlogged or failed spa cover
Symptom
Spa heats very slowly or cannot reach set temperature, especially in cold weather.
Insufficient heating performance
Symptom
Spa lights do not turn on, but all other functions work normally.
LED lighting circuit or transformer failure
Symptom
Spa makes loud banging or knocking noises when pumps start or stop.
Water hammer or loose plumbing
Symptom
Spa powers on but will not heat; temperature stays well below set point with no heater indicator.
Heater not activating
Symptom
Spa trips the GFCI breaker immediately or shortly after turning on.
Ground fault or short circuit in spa equipment
Symptom
Spa water is cloudy, foamy, or has a strong odor despite normal operation.
Water chemistry imbalance or inadequate filtration
Symptom
Spa will not power on at all; control panel is completely dead, no lights or display.
No power to spa control pack
Symptom
Strong chemical or plastic smell from equipment bay or control pack area.
Overheating electrical component or melting insulation
Symptom
Topside control panel buttons are unresponsive or only some buttons work.
Keypad failure or moisture intrusion
Symptom
Water is leaking from the equipment bay under the spa.
Plumbing or component leak in equipment area
Symptom
Water level in spa drops noticeably over a day or two with no visible equipment bay leak.
Hidden plumbing leak in shell or jet plumbing
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| CF |
Display shows CF or CLn reminder; spa otherwise operates normally.
|
Filter cleaning reminder / maintenance alert | View Details |
| COL |
Display shows COL or COOL and heater is disabled; water temperature is low.
|
Cold water protection / cool condition detected | View Details |
| dr |
Display shows dr or DR and heater shuts down; spa may attempt to restart.
|
Dry heater or inadequate water in heater tube | View Details |
| dY |
Display shows dY or DY after dr, indicating repeated dry condition.
|
Persistent dry heater lockout | View Details |
| EC |
Display shows EC or ECON and spa does not heat continuously to set temperature.
|
Economy or energy-saving mode enabled | View Details |
| FLC |
Display shows FLC or FL2 and spa may run pumps but heater is disabled.
|
Flow switch closed when it should be open (stuck or shorted flow switch) | View Details |
| FLO |
Display shows FLO or FL1 and heater will not run; may show intermittent heating.
|
Insufficient water flow or flow switch open | View Details |
| HL |
Display shows HL or HLo and spa shuts down or disables heater.
|
Hi-limit trip due to localized heater over-temperature | View Details |
| ICE |
Display shows ICE or IC and pumps run automatically even when spa is not in use.
|
Freeze protection mode active | View Details |
| LOC |
Display shows LOC or LOCK and buttons do not respond.
|
Panel lock or child lock enabled | View Details |
| OH |
Display shows OH or OHH and spa shuts down; water may feel excessively hot.
|
Overheat condition detected by temperature or hi-limit sensor | View Details |
| Prr |
Display shows Prr or PR and spa may not heat or may shut down unexpectedly.
|
Pressure or pump-related error (pump relay or pressure sensing fault) | View Details |
| PSoC |
Display shows PSOC or PS indicating pressure switch open with pump on.
|
Pressure/flow switch open when pump is running | View Details |
| SE |
Display shows SE or SENSOR and spa may shut down or behave erratically.
|
General sensor error or sensor circuit fault | View Details |
| SLP |
Display shows SLP or SL and spa only heats during filter cycles; water may feel cool.
|
Sleep mode enabled | View Details |
| Sn1 |
Control panel displays Sn1 and spa will not heat or may shut down.
|
Primary temperature sensor (sensor 1) failure or out-of-range reading | View Details |
| Sn2 |
Control panel displays Sn2 and spa may not heat or may shut down.
|
Secondary temperature sensor (sensor 2 or hi-limit sensor) failure or out-of-range reading | View Details |
| — — |
Display shows dashes or blank segments instead of temperature; spa may not respond.
|
No temperature data / communication fault between topside and control pack | View Details |
| – |
Air controls do not introduce air into jets; jets feel flat with only water flow.
|
Air induction failure | View Details |
| – |
Circulation pump is noisy, rattling, or grinding during operation.
|
Worn circulation pump bearings or cavitation | View Details |
| – |
Jets are weak or some seats have very little water pressure.
|
Reduced jet flow | View Details |
| – |
Main jet pump does not start; pressing Jets button causes only a click or humming sound.
|
Jet pump motor failure or seized impeller | View Details |
| – |
One or more jets have completely stopped flowing while others work normally.
|
Individual jet blockage or failure | View Details |
| – |
Ozone indicator is on but there is no ozone smell or visible bubbles from ozone injector.
|
Ozone generator failure or injector blockage | View Details |
| – |
Spa cabinet or shell vibrates excessively when jets are on high speed.
|
Excessive vibration from pump or misaligned plumbing | View Details |
| – |
Spa cover is extremely heavy, sagging, and difficult to remove; condensation and heat loss are evident.
|
Waterlogged or failed spa cover | View Details |
| – |
Spa heats very slowly or cannot reach set temperature, especially in cold weather.
|
Insufficient heating performance | View Details |
| – |
Spa lights do not turn on, but all other functions work normally.
|
LED lighting circuit or transformer failure | View Details |
| – |
Spa makes loud banging or knocking noises when pumps start or stop.
|
Water hammer or loose plumbing | View Details |
| – |
Spa powers on but will not heat; temperature stays well below set point with no heater indicator.
|
Heater not activating | View Details |
| – |
Spa trips the GFCI breaker immediately or shortly after turning on.
|
Ground fault or short circuit in spa equipment | View Details |
| – |
Spa water is cloudy, foamy, or has a strong odor despite normal operation.
|
Water chemistry imbalance or inadequate filtration | View Details |
| – |
Spa will not power on at all; control panel is completely dead, no lights or display.
|
No power to spa control pack | View Details |
| – |
Strong chemical or plastic smell from equipment bay or control pack area.
|
Overheating electrical component or melting insulation | View Details |
| – |
Topside control panel buttons are unresponsive or only some buttons work.
|
Keypad failure or moisture intrusion | View Details |
| – |
Water is leaking from the equipment bay under the spa.
|
Plumbing or component leak in equipment area | View Details |
| – |
Water level in spa drops noticeably over a day or two with no visible equipment bay leak.
|
Hidden plumbing leak in shell or jet plumbing | View Details |
No matching codes found
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