Common Hot Tub Error Messages by Manufacturer

Have you been experiencing problems with your hot tub recently? It's good to refer to your user's manual from time to time for technical support. The thing is, it's not uncommon for us to lose the manual that came with the appliances and furniture we buy.

If your manual is nowhere to be found, do not lose hope, you have come to the right place.

Here, we have listed down the most common error messages as seen on your control panel, and they are grouped by pack manufacturer for your convenience. Please note, however, that this is only for basic diagnosis. If you are in Arizona, please consider calling us at (520) 447-0741 and set an appointment with us for an in-depth analysis of your hot tub's problems.

Photo by Markus Spiske

ACC (Applied Computer Controls)

CoLd - Temperature in the spa heater housing is below 40° F. Status of the heater element is unknown. The low-speed pump or circulation pump will operate continuously until the temperature rises above 45° F.

OH = Over heat. The spa is at a temperature above 108°. Do not use spa when temperature is flashing or the OH message is displayed.

HLoH = Hi Limit Over Heat. Hi limit sensor is disconnected or shorted; or the spa temperature is above 112° F.

SEoP = Sensor open or disconnected. Heater disabled but the spa is operational.

SESH = Sensor short; nonfunctional. Heater disabled but the spa is operational.

PSoC = Pressure switch open with circulating pump.

PSoL = Pressure switch open with low pump.

PSoH = Pressure switch open with high pump.

ToE = Time out error. Rare system error. Spa unusable. Contact ACC.

Balboa (used by Belize Spas and many other hot tubs)

pd = Power supply, unit running on battery backup

OH = Sensors reading 112-118° F.

OHH = Overheat. Spa has shut down. One sensor has detected 118º Fat heater.

OHS = Overheat. Spa has shut down. One sensor has detected 110ºF.

Flo = Improper flow or pressure switch malfunction

Cool = Water temp 20° below set point

ICE = Potential freeze condition has been detected

Sn1 = Hi-limit sensor malfunction

Sn3 = Temp sensor malfunction

SnA = Spa is shut down. Sensor plugged into jack A is not working.

Snb = Spa is shut down. Sensor plugged into jack B is not working.

SnS = Sensors out of balance. If alternating with temp, may be temporary condition. If display shows only this message (blinking) spa is shut down.

HFL = Substantial difference between temperature sensors detected. Could indicate a flow problem.

LF = Persistent low flow problems. (Displays on the 5th occurrence of "HFL" message with 24 hours). Heater is shut down, but other spa functions run normally.

dr = Inadequate water detected in heater.

dry = Inadequate water detected in heater. (Displays on third occurrence of "dr" message). Spa is shut down.

Pr = When spa is first actuated, it will go into Priming Mode.

ILOC = Interlock failure - possible pump or ozone spike

(---) =Unknown water temperature. (Displays when first powered up after refill).

Std = Spa operating in Standard Mode.

Ecn = Spa operating in Economy Mode.

SE = Spa operating in Standard-in-Economy Mode.

Brett Aqualine

OH = Temp exceeds 118° F

Fr = Freeze condition - temp below 40° F

FL = Pressure switch failure

EO = Shorted temp sensor

E1 = Open temp sensor

E2 = Shorted hi-limit sensor

E3 = Open hi-limit sensor

E4 = Shorted flow switch

E7 = Improper electrical connection

CTI

th1/39 = On startup indicates temperature probe problem.

th2/current temperature = On startup indicates temperature probe problem.

th3/39 = On startup indicates water temperature less than 39° F.

OH = Overheating, water over 112° F. System will restart when temp. drops.

hot = Overheating, water over 112° F. System will restart when temp. drops.

HL = High limit switch tripped.

Dream Maker Hot Tubs

OH = Overheat 108° F, spa is deactivated. Do not enter the water.

FL = Flow. Pressure switch is not working.

SN = Non-functional high temperature sensor. Heater is deactivated.

F2 = 4 hours daily filtration

F4 = 8 hours daily filtration

F6 = 12 hours daily filtration

FC = continuous filtration

EasyPak

C = Celsius

CL = Current Time of Day

ECdu = Economy Mode Duration

Econ = Economy Mode Turn On

F = Fahrenheit

Fldu = Filter Cycle Duration

Flon = Filter Cycle Turn On

FLC = Pressure Switch Alarm

FLO = Pressure Switch Alarm

FrEE = Freeze Protection Alarm

HL = High Temperature Alarm

Loc = Panel / Keypad Locked

PrH = Temperature Sensors Alarm

Prr = Temperature Sensors Alarm

Tu = Temperature Set Celsius

Tu = Temperature Set Fahrenheit

Gecko

FLO = Pressure switch failure, switch open

FLC = Pressure switch failure, switch closed

Prr = Temp sensor failure

Prh = Hi-limit sensor failure

HL = Sensor measuring 119° F

FrE = Possible freeze condition detected

Hercules

OH = Spa temp exceeds acceptable limits

FLO = Flow problem

ICE = Freeze condition detected

SN1 = Hi-limit sensor failure

SN2 = Temp sensor failure

Hurricane

PS = Flow or pressure switch failure

SH = Shorted sensor

OP = Open Sensor

LO = Temp below 60° F - freeze

HL = Temp above 118° F

Hydro-Quip

C = Celsius

CL = Current Time of Day

ECdu = Economy Mode Duration

Econ = Economy Mode Turn On

F = Fahrenheit

Fldu = Filter Cycle Duration

Flon = Filter Cycle Turn On

FLC = Pressure Switch Alarm

FLO = Pressure Switch Alarm

FrEE = Freeze Protection Alarm

HL = High Temperature Alarm

Loc = Panel / Keypad Locked

PrH = Temperature Sensors Alarm

Prr = Temperature Sensors Alarm

Tu = Temperature Set Celsius

Tu = Temperature Set Fahrenheit

Jacuzzi Whirlpool

OH = Overheat Protection (Heater is deactivated, pumps low speed is activated).

COOL = Spa water is more than 20° F cooler than the temperature set point.

FLO * = Flow Switch (heater is deactivated. Pump may also be deactivated). Hold = Panel sensors have been pressed too many times in a short period of time.

HOT = Circuit Board temperature has exceeded acceptable limit.

ICE = Freeze protection. No action is necessary.

ICE2 = Freeze protection. No action is necessary.

PnL = Communication between the panel and circuit board is faulty.

---- = "Watchdog" (spa is deactivated) A problem has been detected.

Sn1 = Open sensor (heater is deactivated) or Shorted sensor (spa is deactivated).

Sn3 = Open or shorted sensor (heater disabled).

FLO2 = Closed or shorted flow switch on system startup

Pinnacle

OH = Temperature has exceeded 110° F

SN = Sensor failure

FL = Flow/pressure switch stuck in closed position

Spa Builders

Sn1 = Nonfunctional high temperature sensor. Heater is deactivated.

Sn2 = Nonfunctional temperature sensor. Heater is deactivated.

FL1 = Water flow problem, inhibited or pressure switch malfunction. Check for proper spa water level and ensure pump is primed. Check for clogged filter.

FL2 = Pressure switch problem. Switch closed while pump is deactivated.

COL = Cool condition. If water temperature drops 20ºF below set temperature, low speed pump and heater activates to bring temperature within 15º of set temperature.

ICE = Freeze condition. 55ºF detected. Low speed pump and heater will activate until spa reaches 65ºF.

OH = High temperature condition, has reached 110ºF. Do not enter the spa. Low speed pump (and air blower if so equipped) will activate to assist in lowering temperature.

--- = "Watchdog". Water temperature has reached 118ºF. Entire system is disabled. Contact qualified service technician.

Sundance Spas

ILOC = Interlock failure - possible pump or ozone spike

FLO = Pressure switch malfunction or Flow switch malfunction (system specific)

Hold = Panel buttons pressed to many times to quickly

HOT = PCB temperature above acceptable limit - air blower on

ICE = Potential freeze condition

Pnl = Communication between PCB and panel interrupted

Sn1 = Hi-limit sensor failure

Sn3 = Temp sensor failure

---- = "Watchdog" (spa is deactivated) A problem has been detected

Vita Spas

HiLi = Water temp over acceptable limit

BJ2P = Pump/Blower purge - normal condition

FP = Freeze protect-temp under acceptable condition

SS=0; SS=S; LS=O; LS=S = Multiple causes; open sensors, bad connection to panel, improper voltage, etc.

If you are in the Tucson, AZ area and you can't find the error code your spa is showing from the above, or you need aid in diagnosing your hot tub, make sure to give us a call at (520) 447-0741.