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LA Spas HEET CP Tripping Breaker


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Hello Again,

My LA Spas HEET has been working great for the last couple of months. I've been keeping it running with the temp set at 84, and today I turned it up to 101 because its started cooling off and my wife wanted to get in tonight. About two hours after I turned up the heat the breaker tripped. I happened to be in earshot when this happened. Flipping it back on only saw the breaker trip again about two seconds later. After doing a little bit of troubleshooting I found that If I unplug the circulation pump from the board, the breaker does not trip. I checked the fuse and that is still good. My guess is there is a ground short somewhere, but I don't really know where to start looking. Anyone have some insight on what my next step might be?

Thanks!

LA Spas HEET Wiring Diagram.jpg

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I would try reattaching the circ and first try disconnecting the ozone and try the breaker if it still trips then try disconnecting the heater and trying the breaker again. If it still trips then I would then investigate the circ further. Only takes a few minutes and might save you from buying a circ and finding out it's the heater (most common cause of breaker tripping). Other thing is you haven't really used the heater much and then you crank it up and have an issue. 

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I disconnected the OZ and the Circ, then plugged in the OZ and nothing happened. Then I plugged in the circ and it tripped. I unplugged the circ the OZ and disconnected the heater (P20 & P21), then plugged back in the OZ, nothing, then the circ an then it tripped. I think its definitely something to do with the circ pump, just not sure what, or where to start looking. Thanks for the help again!

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@REA when you get to it there should be a circular dust cover dead center at the back end of the motor. Remove the dust cover and you will see the shaft of the motor. It will have a slot in it that you can place a flat head screwdriver into and try and spin the motor shaft to see if it is locked up or if it spins freely 

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Okay, I was mistaken. I mislabeled the plugs to the cpu when I first messing with this thing. It is not the circ that is tripping the breaker, it is the OZ unit. Attached is a picture. Is this something that can be troubleshot and repaired, or does it need to be replaced? Also, is it okay to run the spa without the OZ?

OZ.jpg

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I don't know what the heck is going on now. The heater does not appear to be heating. It has power at the board and the unit itself, and now the topside is going crazy flashing all over the place. Resetting the breaker does nothing. I'm overwhelmed at this point. It's been working just fine until this issue popped up. 

 

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4 hours ago, Hicks6 said:

it is the OZ unit. Attached is a picture. Is this something that can be troubleshot and repaired, or does it need to be replaced? Also, is it okay to run the spa without the OZ?

What has likely happened with the ozone is that there is a one way check valve inline that has failed and water has gotten past the check valve and into the ozone unit and it is shorting out and causing the breaker trip. Yes it can be run without it but the unit should be disconnected from the pack and the check valve replaced otherwise it will just keep leaking. It may dry out in a few days but the damage may already be done and might require replacement.

Check valve will look like this: https://www.poolandhottubdepot.com/ozone-check-valve-1-4-x-1-4/

 

1 hour ago, Hicks6 said:

topside is going crazy flashing all over the place.

Did the board get wet? I would leave it off overnight and give it a chance to dry out. Was the ozone leaking onto the pack? If it got wet before turning it back on use a hair dryer on low heat to remove any remaining moisture. 

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I'm guessing that something has gone wrong on the board in relation to the topside. It could also be the topside itself, however I just installed that new about 3 months ago. I've been trying to find some sort of troubleshooting guide for the topside aside from the user manual, but I've had no luck. This behavior should be symptomatic of something diagnosable I would guess. 

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The topside is just a display and some buttons, all control happens in the board. The circuit board is unlikely to cause this behavior unless it is wet near the topside plug, or inside the topside itself. This is the most likely cause, and it doesn't take much and it can take days to dry without help.

Are the pumps coming on, acting strange, or not working at all? Does it still turn on to heat or filter?

Unplug the topside. It should still run automated functions such as filter cycles and heating. If it does not, you need a board. If it does, you are probably looking at a topside. 

 

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Nothing appears to be wet. The topside is a sealed unit, unless something happened that has allowed water in. All of the pumps engage, and it is filtering. I've disconnected the OZ, since that was tripping the breaker. The heater is not engaging however. 

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Pumps work but heater doesn't? Do they work with the buttons or just auto? 

That's some strange behavior if it's not wet somewhere on the board or in the topside. I would check incoming voltages and fuses, since you've had a tripping breaker, and make sure that's all good. Then pull the board and check it out for burns, discoloration, or moisture. You might bring it to an electronics repair shop.

I can do no more from here. I carry known good used topsides around for testing purposes, and I buy from a supplier that I can return parts to without question. I would plug in a topside and see, but that's money for you and it is new (which does not necessarily mean good).

But here's the thing, and I'm sure @CanadianSpaTech will agree, coincindence is rare in these things. Multiple sequential part failures are almost always related. The chances of this topside issue being unrelated to the problems and repairs that were just done is pretty small. Your ozone check valve leak caused your ozone to short out which caused your breaker to trip, now your new topside is going crazy... And 2 pros with over 50 years of combined experience both think it probably got wet.

It could be the board, but I would do a whole bunch of checking things before I bought a new one. Unless you wanted to have a spare...😉

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