Spa and Hot Tub digital or blinking indicator light error codes-Spa Tec
Translate your spa or hot tub error messages and blinking
indicator light codes
Error codes indicate a problem and give you a
good idea of what is wrong as long as you know
what to look for.
These Codes are Control System Manufacturer
Specific
To determine your Spas control manufacturer
look at the systems electronic control box
cover
(front or back) for the manufacturer
.
Note:
S
ome Spa assemblers have their companies
sticker over the front cover
.
Balboa Control Manufacturer
Scroll past Common Error Codes for What common codes actually mean and what you can check prior to scheduling service
Common Spa or Hot Tub Error
Codes will be updated as they become available.
ACC (Applied Computer Controls)Systems for Spas
or Hot Tubs
:
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.
BalboaControl Systems for Spas or 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 F. at 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.
SL =
Sleep mode
Brett AqualineControl Systems for Spas or Hot Tubs:
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 Control Systems for Spas or Hot Tubs:
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 MakerControl Systems for Spas or 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
EasyPakControl Systems for Spas or Hot Tubs:
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
Invensys Controls for Watkins Hot Springs and Tiger River
Spas or Hot Tubs:
Green Logo "Ready" indicator blinking = Heater Temperature
sensor problem.
Blue Logo "Power" indicator blinking = Heater high-limit
thermostat tripped.
Entire spa is inoperative = Check power source• Reset
GFCI; call for service if it will not reset
• Disconnect power for at least thirty seconds to reset
heater high limit. If it
will not reset, check for clogged filters. If tripping
continues, call for service.
• Deactivate spa lock
PS
= Flow or pressure switch failure
SH
= Shorted sensor
OP
= Open Sensor
LO
= Temp below 60° F - freeze
HL
= Temp above 118° F
Hydro QuipControl Systems for Spas or Hot Tubs:
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
PinnacleControl Systems for Spas or Hot Tubs:
OH
= Temperature has exceeded 110° F
SN
= Sensor failure
FL
= Flow/pressure switch stuck in closed position
Spa Builder'sControl Systems for Spas or Hot Tubs:
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 Spa
or Hot Tub
Control Systems:
I
LOC
= 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 Spa or Hot Tub Control Systems:
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.
Flashing Light Spa or Hot Tub Error Codes
:
1 flash - 3 second gap High Limit fault
2 flashes - 3 second gap Pressure/Flow switch short circuit
3 flashes - 3 second gap Pressure/Flow switch open circuit
4 flashes - 3 second gap Open circuit Sensor(s)
Flash - 1 second on, 1 second off Same as OH
Flash - briefly OFF once per second Same as Sn1 or Sn3
Flash - briefly ON once per second Same as FLC
Blinking Power Indicator Light - Hydromate High Limit tripped
or, sensor fault
1 flash per second - onga 4352, 53, 95, etc Pressure switch
open circuit - could also be motor, or motor thermal overload
3 flashes per second - onga 4352, 53, 95, etc Electronic fault
- sensor (most common cause) or PCB
Green flashes - Spaquip Pulsar/2095 series Water sensor fault
- lack of water
Red/Green alternate flashes Temperature sensor fault, open
circuit, or high limit tripped - push Reset Rod
Below find what common codes actually mean and
what you can check prior to scheduling service
The Spa or Hot Tub Panel Displays: FLO, FLC, FL, FL1, PS,
Blinking Lights
These codes are related to flow issues or the pressure
switch/flow switch and are by far the most common error codes.
These error codes are caused by a variety of reasons. The
fundamental reason is water flow through the spa control
system, if the water is not flowing at a rate to satisfy the
switch, it will result in one of the error codes above.
Rule number 1 is to always fill the hot tub after a
drain down by placing the hose pipe in the filter housing
suction fitting (remove filter) this fills the hot tub from
inside to outside, rather than placing the hose pipe in tub,
(this fills outside to inside) and is the primary cause of FLO
errors.
If however you have the fault then the first thing to
do is shut the spa down, do not empty, remove the filter and
make sure all the jets are open (as best you can). Then
re-start the hot tub, if the error code goes away, the problem
was either a dirty filter (clean or replace) or too many jets
were closed off.
If your spa is not overheating and you are getting the
above error codes then a couple of things need to be
investigated. Depending on where the temp sensor is mounted;
usually in the wall of the spa in a sensor mount, you could
have a flow issue. Shut the spa power off, remove the filter
and make sure all the jets are open. Then power the system
back up, if the error code goes away, the problem was either a
dirty filter (clean or replace) or too many jets were closed
off. In most cases overheat issues are related to the relays
on the circuit board, or the temp sensor has failed and will
need to be replaced.
The Spa or Hot Tub Panel Displays: HH, OOH,
OH, OHS, OHt, HL, HiLi, Sn2, Sn3, tS, Ht, Blinking Lights
At least one of the sensors has detected water
temperatures of 110 degrees or higher inside the heater.
These indicate that the spa has shut down due to an overheat
situation:
Note: Overheating may occur if the low-speed pump is set to
operate for extended periods of time, or if the incorrect pump
is installed. In rare cases (usually warmer climates), the
circulation pump may also cause overheating.
The following is a list of most probable causes of this
message. Inspect these first:
• Check slice or ball valves. Make sure that they are
open.
• Clean the filter(s), waterline skimmer and footwell
suction for any blockage..
• In extremely hot weather, check for proper cabinet
ventilation.
• Check for excessive filter duration. Note: A common
programming mistake is overlapping filter times that may cause
the spa to filter continuously.
• Check the water level.
• Check the water temperature with an accurate
temperature thermometer. Remove the spa cover and allow the
water to cool. Adding cool water may be necessary. Touch any
button to reset the system. If the water is still hotter than
the set temperature, press the blower button (if applicable)
to cool the spa.
If your spa is not overheating based on physical vessel
temperature and you are getting the above error codes call for
service.
The Spa or Hot Tub Panel Displays: HL, HFL
- This indicates that a substantial difference in temperature
between sensors has been detected during heating.
- This could indicate a flow problem. Check water level in
spa. Refill, if necessary. If the water level is okay, make
sure the pumps have been primed.
On the fifth occurrence of the above message the panel may
display -LF. This indicates a persistent flow problem
The heater is shut down while all other spa functions continue
to run normally. Power on the spa must be cycled before the
heater will function again.
The Spa or Hot Tub Panel Displays: SN, Sn1, Sn2 Sn3, HL, E1,
E3, Prh, HtS, Blinking Lights
Again these can be caused by a flow issue. The first thing to
do is shut the spa down, remove the filter and make sure all
the jets are open. Then power the system back up, if the error
code goes away, the problem was either a dirty filter (clean
or replace) or too many jets were closed off.
Other issues that can cause these error codes one or more of
the service valves is not open up all the way.
The Spa or Hot Tub Panel Displays: Sn, SnS
This indicates that the sensors are out of balance.
If alternating with temperature, it may just be a temporary
condition. If flashing by itself, spa is shut down.
The Spa or Hot Tub Panel Displays: Cd, CLd
This indicates that a sensor detects a possible freeze
condition. This is a normal spa function; no further action is
necessary.When either sensor reads below 40 degrees F., the
system provides freeze protection. It automatically activates
the pump (and the heater if necessary) to circulate the water
and warm the plumbing. The equipment stays on until the
sensors detect that the spa temperature has risen to within 20
degrees of the set temperature. The other pumps and the blower
will purge for 30 seconds to 2 minutes at the end of the
freeze condition. If pump 1 was turned on due to this reason
alone, this message will appear for up to two minutes right
after very cold water is detected.
Note: Internal freeze protection only functions when there is
proper power running to the spa, and the control system is
operational.
The Spa or Hot Tub Panel Displays: :IC , iCE
This indicates that the auxiliary sensor detects a possible
freeze condition. This is a normal spa function; no further
action is necessary.
When the auxiliary sensor reads around 40F- (actual
temperature dependent on specific auxiliary sensor used), the
system provides freeze protection. It automatically activates
all of the pumps and the blower to circulate water and warm
the plumbing.
Note: This auxiliary freeze protection functions at all times,
even when another fault condition has occurred and has
otherwise shut the spa down.
The Spa or Hot Tub Panel Displays: dr, dry
This indicates that there is not enough water in the heater.
This could indicate poor flow or air bubbles in the heater.
The Spa or Hot Tub Panel Displays: SL
This indicates the system is in sleep mode and can be changed
by pressing the up temp. button then pressing the mode
or light button depending on the system.