Hot Tub Tech Tips

Our service department will contact you promptly to help you with your issue.

Most hot tub issues will cause an error code to display on your topside control panel. These error codes are to help diagnose the issue you might be experiencing with your hot tub. If your hot tub is displaying an error code please follow these few steps to help us trouble shoot your issue.

Step 1) Write down the error code(s) that are displaying on your topside
Step 2) Scroll through the list of error codes on our website to help diagnose the meaning and possible cause
Step 3) Fill out the form below and be sure to tell us which error code is displaying along with any other issue or symptoms your hot tub might be having

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 circ 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.

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

Balboa

pd = Power supply, unit running on battery backup
OH = Sensors reading 112-118° F.
OHH = Overheat. Spa has shut down. One sensor has detected 118ºF
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.

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

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 deactivated
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