Spa error code finder
Select your spa control system, then tap your error code for likely causes and what to check.
Warning — risk of serious injury or death
All electrical diagnostic and repair work must be performed by a licensed, experienced electrician in accordance with AS/NZS 3000 and the manufacturer's requirements. Spa controller circuits carry mains voltage in a wet environment — incorrect work can cause electric shock, fire, electrocution or death. These error-code notes are a general identification guide only; they are not repair or safety instructions and do not replace the manufacturer's manual or professional advice. Always isolate power at the switchboard before touching any equipment. Heater & Spa Parts supplies parts only and accepts no liability for any loss, damage, injury or death arising from use of this information.
Electrical work is not DIY. Always use a licensed electrician.
See the full A–Z error code list & guides
Browse the full error code list — 321 codes across 12 systems
Balboa error codes
M7 messages
- - - / - -Temperature not available
- - F / - - C / - -Temperature not available - priming
BUFInternal problem detected
CFE / CONFIG ERRORConfiguration error
CrC / CHKSUM FAILFirmware installation failure
dr / HEATER MAY BE DRYPossible inadequate water detected
drn / DRAININGPump is on while draining
drY / dY / HEATER DRY SERVICE REQDInadequate water detected
Ecn / EcEconomy mode set
gFI / GFCI FAILURESpa could not trip the RCD
HFL / HL / HTR FLOW LOWSubstantial difference between sensors
Hot / HOT-CALL SVCPossible pump stuck on
ICE / IC / 1C / FREEZE CONDPotential freeze condition - pumps run
LF / LOW FLOWPersistent low flow problem
OHH / HH / HTR TEMP LMTOverheat - spa shut down
OHS / OH / SPA TEMP LMTOverheat - spa shut down
PHH / PH IS HIGHpH is high
PHL / PH IS LOWpH is low
Pr / PRIMING MODEInitial priming mode active (takes ~4 min)
PSt / PERSIST FAILHardware failure
rt9 / TEST GFCIReminder - test the RCD
rCA / CHANGE MINERAL CARTRIDGEReminder - change Nature2 cartridge
rCH / NEW FILTERReminder - replace filter
rCL / CLEAN FILTERReminder - clean filter
rCO / CLEAN COVERReminder - clean spa cover
rdr / DRAIN WATERReminder - drain & refill spa
rPH / CHECK PHReminder - test/adjust chemical levels
rSA / CK SANITIZERReminder - test/adjust sanitiser levels
rtC / RTC FAILUREHardware failure
rtr / TREAT WOODReminder - wood retreatment required
SAH / SANITIZER HIGHSanitiser level is high
SAL / SANITIZER LOWSanitiser level is low
SbY / Sy / STANDBY MODESpa is in standby mode
SE / STANDARD ECONOMYStandard-Economy mode
SF / SAFETY FAULTSuction protection fault
SLP / SLSpa is in sleep mode
SnA / SA / SnR / SENSOR ASensor A not working
Snb / Sb / SENSOR BSensor B not working
SnHHigh-limit sensor fault
SntTemperature sensor fault
SnS / SnSensors out of balance
Std / St / STANDARDSpa is in standard mode
StU / STUCK ONPump appears to be stuck on
Non-M7 (older, pressure switch)
pdPower down, on battery back-up
OHOverheat
Flo / FlFlow problem
CoolSpa is 11 degrees below set point
ICE / ICPossible freeze condition
Sn1 / SnHi-limit fault
Sn3 / SnTemperature sensor fault
ILOCInterlock fault
SpaNet error codes
XS series
ER-2Heater sensor plug connection fault
ER-3Water prime failed, insufficient water
ER-4Heater thermal trip, overheat
ER-5Over temperature - sensor over 45c
ER-6Heater temperature sensor failed
ER-7In-pool sensor failed
ER-8Controller software fault, stuck heater relay
99.9Temperature sensor failed
SV series
ER-2Heater sensor failed
ER-3Water prime failed, insufficient water
ER-4Heater thermal trip, overheat
ER-5Over temperature - sensor reading 45c
ER-612v overload - too many LED lights
ER-8Stuck heater relay
ER-10Over current - excessive power draw
99.9Temperature sensor failed
SV Heat Pump
HEAT PUMP AMBAmbient thermistor sensor error
HEAT PUMP CONDCondenser thermistor sensor error
HEAT PUMP FLOWNo water flow detected
HEAT PUMP LOW PCompressor low-pressure switch open
HEAT PUMP HIGH PCompressor high-pressure switch open
HEAT PUMP COMPCompressor thermal cut-out open
HEAT PUMP EXCHHeat exchanger thermal cut-out open
Davey Spa-Quip error codes
Pulsar, 2095 & Intuitive
Red/green flashing on two LEDsHi-limit sensor tripped, electronic fault
Green/Green or Orange flashing LEDInsufficient water detected
Red/green flashing pump LEDInsufficient water detected (some models)
Digital 2000
01Stuck touchpad button
02Touchpad communication error
03Temperature sensor failure (mk2 sensor)
04Pressure switch closed circuit
05Over temperature condition
06Heater thermal cut-out overheat
07Stuck heater relay
08Temperature sensor failure (mk1 sensor)
09Prime failed, pressure switch open circuit
Spa Power 1000 & 2000
01Stuck touchpad button
02Touchpad communication error
03Temperature sensor failure
04Optical water sensor failure
05Over temperature condition detected
06Heater thermal cut-out overheat
07Stuck heater relay
09Prime failed, insufficient water detected
Display too light/dark (SP2000)Hold Display + Up or Down to adjust
Spa Power SP400-SP1200 (incl. SP1000)
Err1 / H2OPrime failed - no water detected in heater
CE:09Prime failed - no water detected in heater
CE:01Stuck touchpad button
Er3 / Err3Stuck touchpad button
CE:02Touchpad / controller communication error
Err2Not used - contact Davey Service Centre
CE:03No temperature data - pool sensor
Er4 / Err4 / CE:04No water sensor - optical sensor fault
Er5 / Err5 / CE:05Over temperature - 45C or more
Er6 / Err6 / CE:06Thermal cut-out tripped
Er7 / Err7 / CE:07Stuck relay - heater control circuitry
Er8 / Err8No temperature data - heater/pool sensor
Err9Real time clock failure
Warning 1Temperature sensor failure (pool or heater)
Ht.dHeating mode - Demand Heating
Ht.FHeating mode - Filtration Only
Green Pump LED flashingSleep mode active
Display too light/darkHold Light + Up or Down to adjust
Xcelsior Spa Pool System (QX350)
Err1 / H2O / CHEPrime failed - insufficient or too-pure water
Er3 / Err3Stuck touchpad button
Er4 / CE:04No water sensor - optical sensor fault
Er5 / CE:05Over temperature - 45C or more
Er6 / CE:06Thermal cut-out tripped
E.r6Water jacket thermal overload tripped
Er7 / CE:07Stuck relay - heater control circuitry
Er8No temperature data - heater/pool sensor
Er9Heater control circuitry fault (motor can)
Gecko (Class Series) error codes
FLOFlow / pressure switch open circuit
FLCFlow / pressure switch closed circuit
ErrElectronic software error
PrrRegulation temp sensor failure
HLHi-limit sensor failure
FrEPossible freeze condition
* * * (3 flashing dots)FLO or FLC
* * * with red LED on PCBHi-limit sensor failure
0.0 / 32FRegulation temp sensor failure
H2OInsufficient water level
BOOPump 1 boost mode
CLE / CFReminder - clean filter
SbYStandby mode - 1hr shutdown
LOCTouchpad panel keys locked
LocP / LoPTouchpad partial lock
LocF / LoFTouchpad full lock
Fxx / FdxxFilter cycle duration in hours
dxx / Fdxx / FsxxFilter cycle start delay in hours
PxxPurge cycle duration in hours
Exx / EdxxEconomy cycle duration in hours
Edxx / EsxxEconomy cycle start delay in hours
Orxx (2.5-9)Over range beyond normal temp limit (not a fault)
CALCalibration error
SUSSuspend mode - Pump 2 button may be stuck
- - - - FDimension One Spas communication error
Aeware by Gecko error codes
in.xe and in.y series
AOH / AO2 (slave)Spa pack temperature too high
Prr / Pr / Pr2 (slave)Temperature sensor failure
OH / OH2 (slave)Overheat 43c
FLO / CFLO / FL2 (slave)Flow error
LO1 FLO / LO2 FLOFlow error
NO FLOPersistent flow error
HL / HL2 (slave)Hi-limit 48c
Hr / HR / Hr2 (slave)Internal hardware error - thermal fuse
HR / HRA / HR2 (slave)Internal hardware error - stuck relay
FCLPressure switch closed
SPinInput voltage too low
PoUPPower up
Lxx / LLxxLow-level software setting
UPL / BLNo low-level software loaded
Er1 (swim spa)Master & slave communication failure
SLA (swim spa)Main touchpad connected to the slave unit
LLxx (swim spa)Unable to select LL program - faulty slave
LLEr (swim spa)LL program not a swim-spa config & slave detected
StbYStandby mode
OFF30 min all outputs off
Fx / FFxxFilter cycle frequency per day
FSxxFilter cycle start time
Fdxx / dxFilter duration in hours
EP 0 or 1Economy mode on/off
ESxxEconomy mode start time
EdxxEconomy mode duration in hrs
EExxEconomy mode end time
EconEconomy mode set
rLYStuck relay
Comm / CoETouchpad communication error - verify cable
SuppConnect power to 240v
HIBr / HiBrAdd fresh water
LoBr / NoBrAdd BromiCharge
HP1-99Heat pump error service code
Wipe Screen AnimationToo much water on in.k1000 touchscreen
Switch/Buzzer (random message)Touchpad factory test mode triggered - faulty touchpad
HP01-99Heat pump error service code
ntQuiet mode (Watkins)
5555Unlock settings
3732Unlock a locked touchpad
in.xm
SP-brIncorrect input current set
SP-OtSpa pack under spa too hot
SP-OHOverheat - water temp 48c
SP-HrInternal hardware error
SP-inInput voltage too low
SP-Fx (x=1,2,3)Fuse 1-3 blown
SP-OCOvercurrent by more than 10%
rH-HrHardware error in in.therm heater
rH-HLHi-limit circuit tripped
rH-nFNo flow detected
rH-PrRegulation temperature sensor failed
Onga (Balboa) error codes
Onga 4352 / 4353 / 4395
LED 1 flash per secondPressure switch open circuit, insufficient flow
LED 3 flashes per secondTemperature sensor or PCB fault
Director & Turbo series
Jet LED slow Green (2-3s)Initial prime fail, pressure switch open cct
Jet LED fast Green (1s)Pressure switch open beyond initial start
Jet LED slow Red (2-3s)Temperature sensor failed
Jet LED fast Red (1s)Hi-limit over-temperature cut-out
Bathmaster series
Green flashing 'Power' indicatorLow/high voltage or pump in lock-out
Orange flashing 'Jets/Pump' indicatorLoss of prime, pressure switch open
Red flashing - 3 flashesPCB fault
Edgetec Triflo error codes
Eezi-Touch
Green Power on, Blue Pump flashing 1/secTouchpad or cable fault
Sensa-Touch
Pump + 3 red heater LEDs flashing 1/secTouchpad or cable fault
Pump off, 3 red heater LEDs flashing 3/secTemperature sensor fault
Pump on, low & high red heater LEDs 2/secCircuit board program fault - power off 30s to reset
Waterco error codes
Portapac SSC
00Temperature sensor fault
'Heat' indicator flashingOver-temperature sensor fault
'Power' indicator flashingOver-temp resettable device tripped 45c
SP1 / SP2Blower speed adjustment (do not alter - press Demand)
Digi-Heat Heaters
nFLNo flow detected, pressure switch open circuit
o/tOver temperature tripped 45c
00Temperature sensor failed
LX error codes
LX / LXK series
ER01 / SNSR AxxxSensor A faulty
ER02 / SNSR BxxxSensor B faulty
ER03 / SNSR AxBxSensor A & B fault
ER04 / HRT TOO HOTOverheat hardware condition >45c
ER05 / TOO HOTOverheat software condition >45c
ER06 / SNSR OUT OF SYNCSensors out of sync - more than 2c
ER07Freeze error under 0c
ER08 / HRT MAY BE DRYDry / lack of water flow
ER09 / TOO COLDIce condition <7c, pumps run 30s in turn
ST1High-limit thermostat protection >60c
LX / LXKA series
SNSR A FAILTemp sensor A faulty
SNSR B FAILTemp sensor B faulty
NO COMMCommunication fault between touchpad & PCB
SNSR BLANCETemp sensors out of sync >2c
ST1High-limit thermostat protection >60c
DRYDry / lack of water flow
COLDLow temp ice condition <7c
HIGHOverheat condition >45c
HOTOverheat condition >60c
Joyonway error codes
E1Temperature sensor fault
E2Temperature too high
E4Heater thermostat tripped
E5Communication error - touchpad to control box
F1Temperature sensor open circuit
F2Temperature sensor closed circuit
F3Temperature too high
F4Temperature too low
F5Auto-reset thermoswitch open
F6Manual-reset thermoswitch open
F8Eprom memory error
F9System settings error
F10Communication error - touchpad to control box
Loc / PB557Press & hold any button for 3 seconds
Lock / PB553 & 555Press & hold OK for 3 seconds
Lock / PB554Press & hold the Tick button for 3 seconds
Sensaheat error codes
E1Water pressure too high
E2Water pressure too low / no water pressure
E43-phase power error
E5Input voltage too high or too low
E6Excessive temp difference between inlet & outlet
E7Water outlet temp too high or too low
E8High exhaust temp
EAHeat exchanger or evaporator overheat
EbAmbient temp too high or too low
EdAnti-freezing reminder
P0Controller communication fault
P1Water inlet sensor fault
P2Water outlet sensor fault
P3Gas exhaust temp sensor fault
P4Evaporator coil pipe temp sensor fault
P5Gas return temp sensor fault
P6Cooling coil pipe temp sensor fault
P7Ambient temp sensor fault
P8Cooling plate temp sensor fault
P9Current sensor fault
PAReset memory failure
F1Compressor driver module fault
F2PFC module fault
F3Compressor start fault
F4Compressor running fault
F5Inverter board over-current
F6Inverter board overheat
F7Current protection
F8Cooling plate overheat
F9Fan motor fault
FAPFC module over-current
FBPower filter plate - no power
Spa-Tech / SpaRelax / Yang error codes
C-1 (S1 & L1 touchpads)
E0CPU fully loaded or loose cables
E1Heater temperature sensor fault
E2Heat pump temperature sensor fault
E3Environmental temperature sensor fault
E4Water level sensor - insufficient water
E5Unmatched power input or voltage fluctuations
E6Water pressure sensor fault - FLO error
CCold / freeze - water below 7c
HOverheat - water over 43c
HHOverheat - water over 45-47c
C-II (Blue & Grey)
E1Temperature sensor 1 fault
E2Temperature sensor 2 fault
E3Heat pump temperature sensor fault
E4Water level sensor - insufficient water
E5Input voltage too high or too low
E6Flow switch fault
E8Heat pump compressor pressure fault
E9Insufficient water flow
CLow water temp below 7c
HHigh temperature hi-limit 43c
HHOverheat 47c
PLPanel locked
HPL (flashing snowflake)Defrost cycle
C-III (Black)
E0Communication error touchpad to control pack
E1Temperature sensor 1 fault
E2Temperature sensor 2 fault
E3Heat pump temperature sensor fault
E4Water flow switch open circuit
E5Input voltage too high or too low
E8Heat pump compressor pressure fault
E9Insufficient water flow
CLow water temp below 6c
HHigh temperature hi-limit 43c
HHOverheat 47c
PLPanel locked - press Warm & Cool to unlock
HPL (flashing snowflake)Defrost cycle
Error codes and information are updated regularly and may change. Contact us for more information. Please note we cannot provide electrical advice, and specific enquiries may require contacting the equipment manufacturer.