4/23/2021 0 Comments Balboa Heater Flow Error
If your spa is not overheating and you are getting the above error codes then a couple of things need to be investigated.Admin staff are working remotely so all queries are being handled by email at this time.
![]() Possible causes are an airlock in the system, lack of flow through the heater (could be caused by dirty filters, closed gate vales, or a faulty circ pump), a faulty sensor or a faulty pcb. The fundamental reason is water flow through the spa control system, if the water is not flowing at a rate to satisfy the pressure switch, it will result in one of the error codes above. Rule number 1 is to always (not with pressurized filter cannister) fill the hot tub after a drain down by placing the hose pipe in the filter housing (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. If however you have the fault then the first thing to do is shut the spa down, do not empty, remove the filter and make sure all the jets are open (as best you can). Then re-start the hot tub, if the error code goes away, the problem was either a dirty filter (clean or replace) or too many jets were closed off. To check for activation: with power off, disconnect the leads going to the pressure switch. With your meter on ohms, check across the poles of the switch. If not and you know flow is not the issue, most pressure switches have an adjusting collar that will vary the pressure it takes to activate it. Turn the power off before attempting any adjustment Make all adjustments slowly and try again. WARNING, if you go too far the pressure switch may activate with the pump off. This is the last thing you want to happen Always check to be sure that the heater goes off when the pump does If you are certain flow is present, but your pressure switch isnt activating you may want to remove it and be sure no debris is clogging it up. Pressure switches are in contact with the water, when you remove it water will come out (or should). NOTE: Most spas are equipped with pressure switches and can be found threaded into the stainless steel heater manifold. You can also check the pressure switch or flow switch with a an Ohm meter. When the water is not flowing it should be OPEN, not CLOSED, if it is closed replace it. In most cases a replacement pressure flow switch for this code is worthwhile as even if it does not solve the problem you will have removed the most common fault from your diagnosis and have a highly unpredictable part in stock for the future. Balboa Heater Flow Error How To Remove AndOther issues pertaining to these error codes is debris wrapped around the pump impeller, click here to see how to remove and check (I would do this as a last ditch attempt to solve the problem), or one of the gate valves is not open up all the way. The most common valve; the tee handle valve (also known as gate or slice valve), will show that the handle is up, but in many cases the gate is still half closed, make sure that it is open all the way, you may need to dismantle the fittings to look inside (once again a big job, last on your list). If your spa is in fact overheating then it is caused by one of two things, either the temperature sensor is defective or the relays on the circuit board that operate the heater are stuck shut causing an over heat issue, in this case you would need to replace the circuit board.
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