The topside of the control panel of your spa allows you to make the various settings of the functions as well as to access the programming of the spa system. Some models even allow you to control device accessories such as audio accessories.
The topside can be offered with menu interfaces or with several simplified interfaces. Digital interface models will offer you a wider range of controls and programming possibilities than traditional button models.
List of common error codes on spa control panels
Here is a list of the main error codes that appear on spa control panels. Just choose the control panel model and find the error code and the associated message.
| Code |
Message |
| OH / HL (Solid) |
Overheat – sensor has detected 118°F at heater |
| OH /HL (Flashing) |
Over heat – sensor has detected 110°F spa water |
| FLO / FL (Flashing) |
Pressure switch open, pump on |
| FLO / FL (Solid) |
Pressure switch closed, pump off |
| Cool |
Water temp 20°F below set point |
| ICE / IC |
Potential freeze condition has been detected |
| Sn1 / Sn |
Hi-limit sensor fault |
| Sn3 / Sn |
Temp sensor fault |
| ILOC |
Interlock fault |
| Pd |
No power to spa pak, on battery backup |
| SbY / StbY |
Spa is in standby mode |
| Code |
Message |
OHH / HH / HTR
TEMP LMT |
Overheat – spa has shut down, sensor has detected 118°F at heater |
OHs / OH / SPA
TEMP LMT |
Overheat – spa has shut down, sensor has detected water temp 110°F |
| ICE / IC |
Potential freeze condition has been detected |
| SnA / SA / SENSOR / A SERVICE RQD |
Sensor plugged into ‘A’ port not working |
| SnB / SB / SENSOR / B SERVICE RQD |
Sensor plugged into ‘B’ port not working |
| SnS / Sn / SENSOR SYNC |
Sensors out of balance |
| HFL / HL / HEATER FLOW LOW |
Substantial temperature difference between sensors, possible low flow condition |
| LF / LOW FLOW |
Displays on the fifth occurrence of ‘HFL’ message within 24 hour period |
| Dr / HEATER MAY BE DRY WILL RESET SHORTLY |
Inadequate water detected in heater, possible dry condition |
| Dry / dy / HEATER DRY SERVICE RQD |
Inadequate water detected in heater, displays on third occurrence of ‘dr’ message |
| Pr |
Priming mode – occurs when spa is powered up |
| —/–/–F/–C |
Unkown water temperature / temperature not current |
| PSt / PERSIST FAIL |
System PCB persistent memory could not be read / hardware fault |
| SbY / STANDBY MODE |
Spa is in standby mode, all automatic functions are stopped |
| CFE |
System configuration / conflict error |
| SF/ SAFETY FAULT |
Suction protection circuit fault |
| Code |
Message |
| FLO / FL-O / rH-nF |
No water flow detected |
| FL-C |
Pressure switch closed while pump off |
| Prr / Pr-r / rH-Pr |
Temp sensor fault |
| AOH / AO-H / SP-Ot |
Spa pack internal temp too high |
| Fr- Er |
Input frequency (50/60Hz) is out of range |
| SP-In |
Input voltage too low |
| SP-Fx / Fx |
F1, F2 or F3 fuse is blown |
| SP-OH / OH |
Overheat sensor has detected 108°F spa water |
| SP-Hr / Hr |
Internal hardware error |
| SP-br |
Breaker setting too low incorrect / input current setting |
| rH-Hr |
Heater hardware error in.therm |
| rH-nH |
Heater on, no water temp increase |
| rH-nC |
Communication error between heater and spa pack |
| rH-HL / HL |
Overheat – sensor has detected 119°F at heater |
| rH-Id |
Incompatibility between spa pack and heater |
| Sc |
Scanning outputs for current draw |
| Sc-Er |
Scan error detected / system learning error |
| P1-Er |
System detects no current change with pump-1 on |
| P2-Er |
System detects no current change with pump-2 on |
| P3/P4/P5-Er |
System detects no current change with pump 3, 4 or 5 on |
| CP-Er |
System detects no current change with circ-pump on |
| BL-Er |
System detects no current change with blower on |
| Fn-Er |
System detects no current change with fan on |
| Fb-Er |
Fiber optic failure |
| Lxx/LLxx |
Low level software setting |
| UPL/UP-Ld |
No low level software loaded |
| StbY |
Standby mode |
| OFF |
All outputs off for 30 minutes |
| rLY |
Stuck relay |
Need advice on the right choice of topside? We offer a wide range of topside from the world leader to many other manufacturers. Contact us or visit us in store to discuss with our experts.
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