| * * * (3 flashing dots under temp display) | Flow/Pressure switch either Open or Closed Circuit |
| * * * (as above, plus illuminated red LED on PCB) | High Limit Fault |
| - - - - , - - - | 'Watchdog' - 48C reached, electronic fault, shuts system down. Major Fault |
| - - | Temperature unknown - displayed at power up for 2 minutes - not a fault |
| - 01 | Hi-Limit fault |
| - 02 | Temp sensor fault |
| - 03 | Flow/pressure switch open |
| - 04 | Flow/Pressure switch closed |
| - 07 | Hi-limit fault |
| --- | "Watchdog" (spa is deactivated) A problem has been detected (most likely a bad temp or hi-limit sensor/probe) |
| --- | "Watchdog". Water temp has reached 118ºF. Entire system is disabled. Contact qualified service technician |
| --- | Unknown water temperature. (Displays when first powered up after refill) |
| 01 | Stuck Button |
| 02 | No Controller Data |
| 03 | Temperature Sensor |
| 04 | Water Sensor |
| 05 | Spa Over Temperature |
| 06 | Heater Thermal Cut Out |
| 07 | Stuck Heater Relay |
| 09 | Water Prime Failed |
| 131 | Hi-limit |
| BJ2P | Hi-Limit - water temp too high |
| BJ2P | Pump/Blower purge - normal condition |
| C | Celsius |
| C4.4 | Hi- Limit |
| CE 01 | Stuck Touchpad button |
| CE 02 | No controller Data Communication |
| CE 03 | Temperature sensor fault |
| CE 04 | Water Sensor/Pressure switch fault |
| CE 05 | Over Temperature Condition |
| CE 06 | High Limit manual reset Klixon tripped |
| CE 07 | Stuck Relay |
| CE 08 | Temp Sensor Fault -( Spaquip Digital 2000 MK1 sensor) |
| CE 09 | Water Prime Fault - Lack of water |
| CL | Current Time of Day |
| COL | Cool condition. If water temp drops 20ºF below set tempe, low speed pump and heater activates to bring temp within 15º of set temp |
| COOL | Spa water is more than 20° F cooler than the temperature set point |
| Cd, CLd | Freeze Condition |
| CoLd | Temp in heater housing is below 40° F. Low speed / circ pump will operate continuously until the temp rises above 45° F. |
| Cool | Water temp 20 degrees below set point |
| Cool, COOL, COL | Water is 11C below set point - not a fault |
| DR, dr, dy | Heater dry - insufficient water fault |
| E### | pH probe out of calibration |
| E0 | Short circuit temperature sensor |
| E1 | Open circuit temperature sensor |
| E2 | short circuit/closed high limit sensor |
| E3 | Open circuit high limit sensor |
| E4 | Short circuit/closed pressure/flow switch |
| E7 | Improper electrical connection |
| ECdu | Economy Mode Duration |
| EO | Shorted temp sensor |
| Ecn | Spa operating in Economy Mode. |
| Econ | Economy Mode Turn On |
| Er0, Er1 | Temperature sensor faulty |
| Er2, Er3 | Hi-Limit fault |
| Er4 | Flow/Pressure switch short circuit |
| Err | Software Program Fault |
| Error 3 | Stuck touchpad button |
| Error 4 | Water sensor fault |
| Error 5 | Over temperature |
| Error 6 | Klixon Tripped - over temp |
| Error 7 | Stuck Relay |
| Error 8 | Temperature sensor fault |
| F | Fahrenheit |
| F2 | 4 hours daily filtration |
| F4 | 8 hours daily filtration |
| F6 | 12 hours daily filtration |
| FC | continuous filtration |
| FL | Pressure switch or flow switch failure |
| FL1 | Water flow problem, pressure switch malfunction. Check for low water level and ensure pump is primed. Check for clogged filter |
| FL2 | Pressure switch problem. Switch closed while pump is deactivated |
| FLC | Pressure Switch Alarm |
| FLC, FL2 | Flow/pressure switch closed circuit - debris in switch, perforated diaphragm, faulty |
| FLO (flashing) | Flow switch open circuit - Sundance/Spa Builders/ Balboa |
| FLO | Pressure switch or Flow Switch malfunction (heater and/or pump may be deactivated) |
| FLO, Flo, FL1 | Flow/pressure switch open circuit - lack of flow or pressure or for Sundance/Spa Builders/Balboa - Flow switch is closed circuit |
| FLO2 | Closed or shorted flow switch on system startup |
| FP | Freeze protect-temp under acceptable condition |
| Fldu | Filter Cycle Duration |
| Flo | Improper flow or pressure switch malfunction |
| Flon | Filter Cycle Turn On |
| Fr | Freeze condition - temp below 40 degrees |
| FrE, Fr, FP | Freeze condition detected |
| FrEE | Freeze Protection Alarm |
| H2O | Water Prime Fault - lack of water |
| HFL | Substantial difference between temperature sensors detected. Could indicate a flow problem |
| HL | High Temperature Alarm |
| HL | Temp above 118 degrees |
| HL, HFL, HH, OHH | High limit sensor reading 45-48C, or above - check flow |
| HLoH | Hi Limit Over Heat. Hi limit sensor is disconnected, shorted, or spa temp is above 112° F. |
| HOT | Circuit Board temperature has exceeded acceptable limit (air blower may be on) |
| HiLi, HLEr | Water temperature above acceptable range |
| Hold | Panel buttons pressed too many times too quickly |
| I CE2 | Freeze protection. No action is necessary |
| ICE | Freeze condition. 55ºF detected. Low speed pump and heater will activate until spa reaches 65ºF |
| IC | Freeze Condition |
| ILOC | Interlock failure - possible pump or ozone spike - posibly caused by faulty ozonators, pumps and equipment |
| L1 | Panel Lock |
| L2 | Panel Lock |
| LF | Low Flow Fault |
| 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. |
| LO | Freeze Condition |
| LOC | Control Panel functions Locked |
| LS=0, LS=S | Multiple causes - open circuit sensor, faulty panel connection, improper voltage, etc |
| Loc | Panel / Keypad Locked |
| OH | High temperature condition, has reached 110ºF. Spa may be partially deactivated or low speed pump (and air blower if equipped) may activate to lower temp |
| OH, OHS, oH | Overheat Condition 43-45C |
| OHH | Overheat. Spa has shut down. One sensor has detected 118º |
| OHS | Overheat. Spa has shut down. One sensor has detected 110º |
| OP | Open circuit sensor |
| PLUG | Sundance/Spa Builders Service Technician's Test Plug accidentally left connected to PCB |
| PS | Flow or pressure switch failure |
| PSoC | Pressure switch open with circulation pump. |
| PSoH | Pressure switch open with high pump. |
| PSoL | Pressure switch open with low pump. |
| PnL | Communication between the panel and circuit board is faulty |
| Pr | System Priming - When spa is first actuated, it will go into Priming Mode |
| PrH | Temperature Sensors Alarm |
| Prh | Hi-limit sensor failure |
| Prr | Temperature sensors alarm |
| SA, SnA, SnH, Sb, Snb, Snt | Sensor Open Circuit or faulty |
| SnH | Hi Limit circuit open or faulty |
| SnT | Temp sensor circuit open or faulty |
| SE | Spa operating in Standard-in-Economy Mode. |
| SESH | Sensor Short Circuit |
| SESH | Sensor short, nonfunctional. Heater disabled but spa operational. |
| SEoP | Sensor Open Circuit |
| SEoP | Sensor open or disconnected. Heater disabled but spa operational. |
| SH | Short circuit sensor |
| SN | Non functional high temperature sensor. Heater is deactivated |
| SN | Sensor failure |
| SN1 | Hi-limit sensor failure |
| SN2 | Temp sensor failure |
| SS=0;SS=S; | Multiple causes; open sensors, bad connection to panel, improper voltage, etc. |
| Sn | Sensors out of balance |
| Sn1 | Hi-limit sensor malfunction |
| Sn2 | Nonfunctional temperature sensor. Heater deactivated |
| Sn2 | Temperature sensor fault |
| Sn3 | Temp sensor failure |
| SnS | Sensors out of balance. If alternating with temp, may be temporary condition. If display shows only this message (blinking) spa is shut down |
| 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 |
| Std | Spa operating in Standard Mode. |
| ToE | Time out error. Rare system error. Spa unusable. |
| Tu | Temperature Set Celsius |
| Tu | Temperature Set Fahrenheit |
| dr | Inadequate water detected in heater. |
| dry | Inadequate water detected in heater. (Displays on third occurrence of "dr" message). Spa is shut down. |
| err 1 (H20) | Prime Failed |
| err 3 | Stuck Button |
| err 4 | No Water Sensor |
| err 5 | Overtemperature |
| err 6 | Thermal Cut Out Tripped |
| err 7 | Stuck Relay |
| err 8 | No Temperature Data |
| hot | Overheating, water over 112° F. System will restart when temp. drops |
| pd | Power supply interrupted, unit running on battery backup |
| th2/current temperature | On startup indicates temperature probe problem |
| th3/39 | On startup indicates water temperature less than 39° F |