F2 = 4 hours daily filtration F4 = 8 hours daily filtration F6 = 12 hours daily filtration FC = continuous filtration Do not enter the water. A "Cyclic Redundancy Code" (CrC) is a type of checksum algorithm that takes a string of data bytes and calculates from it a few bytes (the checksum) that depend on the entire file. LF: Persistent low flow problems. We can help you figure out exactly what’s wrong with your hot tub and provide you with tips to prevent further issues. Turn off the power to reset the tub's systems. Overview: The "HFL", "HL", or "HTR FLOW LOW" Fault has occurred 5 times in the Last 24 Hours or Less, and Heating has been Disabled. Sensors have detected hot tub water above 47.8 degrees: Do not enter the water. Remove the cover and allow to cool. FL = Flow. Heater is shut down, but other spa functions run normally. * Beyond Zones, Northern Territories and the USA do not qualify for free shipping * * * (3 flashing dots under temp display). OH = Overheat 108° F, spa is deactivated. Most hot tub owners are familiar with how to turn their hot tubs on and off. SN = Non functional high temperature sensor. Dream Maker Hot Tubs. HFL: Substantial difference between temperature sensors detected. HOT TUB FLO Error Code - HOT TUB FLOW ProblemsTo fix a hot tub FLO ERROR code, 3 flashing lights or just isn't heating up, watch this video to find out why. That’s fairly easy to explain. For FL1 and FL2 codes, you can perform three actions: verify that the tub's water level is sufficient; clean the filter; or purge the circulation pump of excess air. If the spa temperature does not return to normal contact a hot tub technician. For code OH, remove the hot tub cover and set the tub to the economy setting. If you have any questions or need further guidance, feel free to contact us. OH: Sensors have detected water above 43.5 degrees. High Limit Fault - - - , - - - ‘Watchdog’ - 48C reached, electronic fault, shuts system down. Hfl on my hot tub - Answered by a verified Pool and Spa Expert We use cookies to give you the best possible experience on our website. If you have a message code on the control panel of your spa, such as the one shown at right, follow the steps below. If the GFCI does not trip for some reason, the gFI fault will appear and the HOt flag will be set. dr: Inadequate water detected in heater.. dry: Inadequate water detected in heater. Once cooled reset. There is Not Enough Water Flow through the Heater to carry the Heat Away from the Heating Element. Remove the cover and allow to cool. Pressure switch is not working. Could indicate a flow problem. Flow/Pressure switch either Open or Closed Circuit * * * (as above, & red LED lit up on board). When the hot tub is placed into the ON position the water is heated to a temperature optimal for relaxation, and in the OFF position the hot tub’s heater, pump, and jets essentially have no power. Heater is deactivated. (Displays on the 5th occurrence of "HFL" message with 24 hours). ... HL, HFL: A difference in readings between temperature sensors has been detected indicating a possible water flow problem. Pool and Hot Tub Depot and the Pool and Hot Tub Depot Logo are registered trade-marks. 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. We want to make sure that your hot tub is working properly. Do not enter the water. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Further issues the GFCI does not trip for some reason, the gFI fault appear! Or Closed Circuit * * ( 3 flashing dots under temp display ) display ) tub 's systems if have. 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