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Posted

After solving the blower issue that was tripping the controls GFCI breaker, everything appeared to be normal.

I set the temperature for 80 degrees F and noted that the tub was going into a 10 minute cleaning cycle daily.

This past week I discovered the tub had achieved an indicated water temperature of 105F when I noticed that the tub pump was running constantly, like it couldn't complete a cleaning cycle.

I verified that the called for temperature, ie the setpoint was still 80 F.

Not having the time to mess with it, I went to the electrical panel, and shut off the breaker that supplies power to the heater.  I couldn't get the pump to stop running, so I power cycled the controls breaker, getting a series of dashes on the panel at one point, but then after power cycling again, the controls panel came up.

For two days the system went into the clean cycle, shut off, and water temp slowly went down.  I figured to let the tub do the clean cycle, and I'm not worried about freeze at this point, while I figured out the heating cycle issue.

Last night, it became apparent the tub was running for hours, albeit without the heater, but wouldn't shut off.  So I have tripped the controls/pump breaker, leaving the tub without AC as I type this.

My questions:

• Is my theory correct, that without the heater breaker "on", the tub should cycle on and off per the clean schedule?  Or, is the tub "missing" the heater input and runs forever trying to sense the heater coming on?

• The tub is "seeing" the 105F water temp, so I know the thermocouple is working and giving the motherboard the temp signal.  I can see the requested 80F desired temp on the panel.  If there is a "stuck" relay that keeping the heater engaged, does the replacement relay simply pop out of the motherboard, or do you have to resolder one in?

•  Is there a standard set of troubleshooting I can do for an always on failure mode? 

I was a field engineer for aeroderivative gas turbine controls at one point in my career, comfortable working around AC, controls scheme etc, but not finding detailed schematics and manuals.  Hoping ya'll can give me some guidance, just like you did for my blower issue, now resolved.

 

Thanks so much.

Harvey

  • 2 weeks later...
Posted

I traced the issue to Jet Pump 1, that remains on, even when the red, APP light is off.

I can press the Jet 1 button on the main control panel, hear the click, see the light come on, press it again, see the light go off, but the pump persists in running.  I have tried tapping the relay with power off, and when I repower the pump runs.

My diagnosis is that the Omron relay fused in the "on" position.

My understanding is that this relay is soldered to the motherboard.  Is this a relatively easy fix for someone with soldering skills, or is it a multiple layer board, well outside the capability for a DIY fix?  Would a pool tech do this repair if I brought the board in, or would they tell me to buy a new board?

 

Thanks,

 

Harvey

image.png.06963a3f144d9f58e77811a111044986.pngimage.png.0e02eaa4868de6884374e2cc23b51176.png

 

image.thumb.png.29351033c14d61e2c6d46c5f03b8809f.png

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