
Message | Meaning | Action Required | 
  | 
  | 
  | 
LF  | Persistent low flow problems.  | Follow action required for HL or HFL message.  | 
  | Heater is shut down, but other spa  | Heating capacity of the spa will not reset  | 
  | functions continue to run normally.  | automatically. Press any button to reset.  | 
  | Displays on the fifth occurrence of  | 
  | 
  | the HL or HFL message within 24  | 
  | 
  | hours.  | 
  | 
  | 
  | 
  | 
OH  | Overheat protection. The spa has  | DO NOT ENTER THE WATER. Remove the spa cover  | 
OHS | shut down. One of the sensors  | and allow water to cool. At 107°F, the spa should  | 
  | has detected that the spa water is  | automatically reset. If spa does not reset, shut off  | 
  | 110°F.  | the power to the spa and call your dealer or service  | 
  | 
  | organization.  | 
  | 
  | 
  | 
HH  | Overheat protection (spa is  | DO NOT ENTER THE WATER!  | 
OHH | shutdown). One sensor has  | Remove the spa cover and allow spa to cool below  | 
  | detected 118˚F (48˚C) at the  | |
  | 107˚F (42˚C). Press any button on the topside  | |
  | heater.  | |
  | display to reset spa. If spa will not reset after spa has  | |
  | 
  | |
  | 
  | cooled, turn off power for approximately 30 seconds  | 
  | 
  | and then turn power back on. If display message is  | 
  | 
  | repeated then shut the power off to the spa and call  | 
  | 
  | your dealer or service organization.  | 
  | 
  | 
  | 
Pr  | When your spa is first actuated, it  | The priming mode will last for up to four minutes and  | 
  | will go into priming mode.  | then the spa will begin to heat and maintain the water  | 
  | 
  | temperature in the Standard mode.  | 
  | 
  | 
  | 
SF  | Safety Suction. Spa is shut down.  | The display will show SF when a vacuum switch  | 
  | 
  | closes. All functions will turn off and the system will  | 
  | 
  | be disabled until a panel button is pressed.  | 
  | 
  | 
  | 
SL  | Indicates heater is in Sleep Mode.  | None.  | 
  | 
  | 
  | 
SA  | Spa is shut down. The sensor that  | If the problem persists, contact your dealer or service  | 
Sb  | is plugged into the sensor “A” or  | organization. (May appear temporarily in an overheat  | 
SNA | “B” jack is not working.  | situation and disappear when the heater cools.)  | 
  | 
  | |
Snb | 
  | 
  | 
  | 
  | 
  | 
Sns | Sensors are out of balance.  | Contact your dealer or service organization.  | 
Sn  | • If this is alternating with the  | 
  | 
  | 
  | |
  | temperature, it may just be a  | 
  | 
  | temporary condition.  | 
  | 
  | • If the display shows only this  | 
  | 
  | message (periodically blinking),  | 
  | 
  | the spa is shut down.  | 
  | 
ST  | Indicates heater is in Standard  | None.  | 
  | Mode.  | 
  | 
  | 
  | 
  | 
Stby | Pressing a button combination  | Press any button to leave Standby Mode and return to  | 
  | on the user panel has activated  | normal operation.  | 
  | Standby Mode.  | 
  | 
  | 
  | 
  | 
2011 Portable Spa
19 OperatingYour
Spa
LTR20111000, Rev. D  | www.calspas.com  |