Aceman

Excuse me for taking so long to get back but my neighbor (who is a/the electrician) was busy working. From you June 24 2021 Post to me: "These errors all originate from the sensors. Bad sensors or water flow issues, it is the sensors that trigger them. Do you have an ohm meter? Unplug the two sensors (black nuts on heater with gray cables) from the board and test them, in the 20k ohm setting if adjustable. Post results." We tested both sensors and there was a zero readings on both. I have attached a pic that shows the area (two square holes/silver area) where we tested them on the connector (that is the only area to test) We also took both sensors out of the heating element and they both looked fine. Not sure what the p/n is for the sensors. All that I could find was 000186 on both labels attached to the wire. Then we turned Dip Switch A10 to the off position ("OFF" heater can run while the high-speed pump is running"). We believe we could feel the heating element tube getting warm. Remember the low speed pump will not come on only the high speed pump will. So not really sure if it is the card or the sensors. Remember also in my original post: "Checked the voltage on the low speed pump and there is no voltage. High speed pump has good voltage. All fuses checked and are ok." You wanted the dip switch chart. Here is a link to the replacement board (Balboa p/n 54604-01). It is the same dip switch configuration as the board that I have now (p/n 55340) that was set by the spa manufacturer. Go to page 6 to find the Dip Switch definitions and what each switch can do (On or Off). https://www.spaguts.com/Documents/Balboa_VS300FLX_Circuit%20Board_54604-01.pdf We also took the Circuit Board out and inspected that front and back and found no burns on either side of the board. Otherwise it looked in good shape but a relay could be bad. It is the K1 relay that controls the low speed pump I found out. When we were doing some tests when I pushed the button for the jets on the control panel heard it click for the low speed pump (low speed of the pump did not come on), pushed again and the high speed pump came on. Hope I covered everything.

Answer to your questions: 1. "Meaning it stops running when the low speed indicator is on, or it remains running in high (or the same) speed regardless of the button you push? Does it turn off?" You mean when the heat light comes on the control panel it does not go into low speed to heat/filter. The high speed does turn off. I have to turn it on/off using the control panel. It will go off or on if I push the button on the control panel. The dip switch is set to heat/filter only on low speed. 2. "You can get sensors, heaters, and and such from them direct, but the board may be proprietary. If it comes to a board, I would get a new balboa aftermarket system." I tried to contact Balboa directly and there is no way to do it. Tried to find out which relay is the low speed relay. Called them and they do not talk to anyone. Tried to fill out two of their forms on there website and both came back as undeliverable. Also you cannot buy from them directly only thru distributors/spa stores/online vendors. Try it yourself. Every item I checked it states "Out of Stock" on their website. 3. "It could be a relay on the board. I rarely see them fail and not burn the solder joint on the back of the board, but it can happen. It could also be the circuit board itself." Forget where I had seen this but someone posted that all he had to do was the replace the relay on a board he had and that fixed it with out buying a new board. Have a new board lined up to buy. One other thing. When I plug in the spa and it goes thru the prime cycle on the control panel and the heat lamp comes on the control panel and then I hear a "click" from below. But it will not go into low speed to heat/filter.

The high speed will come on with no problem but no low speed. When I plug the spa and after the pr is done on the control panel the light that says it is heating comes on but does not turn on the low speed pump to heat/filter. Yes, have great water flow from the jets when I turn on the jets but only the high speed comes on the pump. There is NO air in the lines. Interesting about the sensors. Will have my neighbor (whose is a electrician) come to do the ohm test and give you the results. He also did the other tests mentioned in original post above. Did notice under the right sensor there is a little rust under the right sensor connection if that would have anything to do with it. (see attached pic). The left sensor is clean with no rust. I have had a spa since 1985 and bought the current spa in 2012 which is my 2nd spa. I am familiar with spas. Thank you sir for your response.

Yes there were errors on the display. Will list error message as the way they came up at different times. 1 dr 2. LF 3.dy 4. HL 5. dr. When I replug in the spa just to run the HIgh speed the circulate water the "dr" will show up again. Had the spa for 9 years. It is a Watkins spa. Pic's attached. Figure as I said above it maybe K1 or K6 relay. If you know the relay p/n that would be great.

In my original post comment did check the low speed pump for voltage @ the board and there was no voltage. The high speed pump voltage checked @ the board and the voltage was good.

Have Balboa CB p/n 55340 Chip FREE300R1A/ 20120514. Spa Mfg is Watkins. The low speed pump is not coming on but the high speed pump works OK. Checked the voltage on the low speed pump and there is no voltage. High speed pump has good voltage. All fuses checked and are ok. Think it may be the relay on the CB that controls the low speed is bad. On the wiring diagram there are K1 thru K6 relays (thinking it maybe K1 or K6?). Which relay is it that controls the low speed pump? Is it a relay that is the causing problem or something else? Thanking you in advance.