To check to see if the pressure switch is defective or mis-calibrated, please do the following: Debris wrapped around the pump impellerīefore proceeding make absolutely sure that the pump which circulates water through the heater is passing water through the heater and also make sure you see water movement in the spa! If you don't confirm water is moving in the hot tub and through the heater do not proceed with the next step as in doing so may burn out the heating element.Too many jets closed off or all jets not installed.Before we troubleshoot this error code here are a few possible causes: "FLO", "FL" and 3 blinking dots mean the same thing - the water flow through the heater is inadequate or the pressure switch is mis-calibrated and/or possibly defective. All other error codes can be viewed here. Both mean the same thing and will be troubleshot the same. The error code that we are going to look at here is "FLO" or 3 blinking dots. The predominant manufacturers are Balboa, Gecko and Hydro Quip. There are several different error codes that are used by many different manufacturers. I'm Getting Error Codes Or Blinking Dots.More information regarding "Spa Won't Heat" If the light did not come on, then the circuit board will need to be replaced. Don't worry, you will not get shocked as the pins are low voltage.ĭid the heater light come on on the topside control? If so, the pressure switch or the pressure switch cable is defective and should be replaced. As soon as the low/filter pump turns on, jump the two pressure switch pins on the board with alligator clips. Power the circuit board down, then unplug the pressure switch cable from the circuit board revealing two pins.Note that not all spas have a pressure switch, so these instructions may not apply. Use the instructions provided below to bypass the pressure switch to see if it is the cause of the "no heat". The pressure switch screws into the heater manifold and has cable leading from the circuit board with two small wires that attach to it one on each terminal. If it is not then there may be an issue with the pressure switch (it may be defective). In order for the spa to heat, the heat indicator light needs to be on on the topside control. No, It Is Not: If you are not getting any error messages in the display screen (blinking dots is an error message) then please proceed, otherwise find the steps below to troubleshoot error messages. If you do see 220 volts and it is not heating then the heating element is defective and will need to be replaced. If you do not, then the circuit board is faulty and will need to be replaced or sent to us for repair. If you DO have 220 volts across both hot wires coming from the house, then next measure the voltage across both heating element pins. If you DON'T have 220 volts, then you have an issue with the GFCI breaker in the main breaker box. You should see 220 volts on your volt meter - note that measuring from each wire to ground will not give an accurate reading). Yes, It Is: Measure the voltage across both hot wires coming from the house. When calling for heat, is the heat indicator light/icon on on the topside control? One Or More Wires That Connect To The Circuit Board Relays Or The Copper Straps Connecting The Board To The Heater Have Burned/Melted The Main Terminal Block Where The Incoming Power Terminates Has The Spa Side Buttons Are Not Responding When I Push Them The Display Is Going Wacky And Some Of The Buttons Don't Respond When I Push A Selected Button, Something Else Comes On The Pump Is Coming On By Itself - No Buttons Were Pushed The GFCI Trips When I Call For Heat Or Turn On The Spa Our complete troubleshooting library can be found here.Ĭlick On A Problem Below To See The Solution: If your spa does not have a circuit board, click here for mechanical troubleshooting. Troubleshooting Tips For Hot Tubs With A Circuit Board
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