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Author Topic: FL1 error in Jacuzzi 345 that is not covered in other posts  (Read 171 times)

neilmccubbin

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FL1 error in Jacuzzi 345 that is not covered in other posts
« on: April 19, 2019, 10:46:52 am »
We have a 2013 Jacuzzi 345 which suffered freezing damage
When filled, there was a small leak at the discharge connection of the circulation pump.  Otherwise tub ran fine. 
We let it drip till freezing weather was over this week (April 2019)
I removed the circulation pump, and found the nut on the discharge was cracked, presumably due to frost
Replaced the nut and reinstalled the pump with new O-ring seals.  No leaks

After refilling we have an FL1 error and the heater will not swith on.

The circulation pump runs (makes noise, strong suction at filter, flow switch flapper kicks across to stopper)
We tried "removing air lock) procedure in manual
Tried disconnecting wire from flow switch to panel.  No difference
Ran without filters, still have error
We have 220v across J7 and J8, on K7   
Zero volts across J9 and J 10, which feed the heater from K8 
Are K7 and K8 removable/replaceable?  What are they? 
Heater resistance is 10 ohms, which fits the spa specs

To get at the pump, I removed the four wood screws holding the contorl box in place and swing it sideways, pulling on some of the wires quite hard.  I am concerned that I damaged one, but can see no signs of damage.


What to do?

If I jump across the terminals for the flow switch at J3 on the board, what will happen?
Is is possible that the flow switch is faulty although the paddle moves?
In normal operation is the flow switch supposed to be open or closed?  The manual implies that both open and closed are malunctions. (FL1 open, FL2 closed)




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FL1 error in Jacuzzi 345 that is not covered in other posts
« on: April 19, 2019, 10:46:52 am »

neilmccubbin

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Re: FL1 error in Jacuzzi 345 that is not covered in other posts
« Reply #1 on: April 20, 2019, 09:02:54 am »
Found solution
Although the flow switch paddle visibly flapped over against the post, the switch was not closing.
Determined this by shorting the switch out, which made FL1 error go away.
Replaced switch ($70 Cdn)and all was well after the pumps ran a while to get air out of the system
BTW  the Jacuzzi service tech has still not returned my call for service.  Typical Jacuzzi
BTW   There are so many air vents off the plumbing in this J345 that I wonder whether the oft repeated technique of forcing water into the pumps with a hose is even worth doing

hottubdan

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Re: FL1 error in Jacuzzi 345 that is not covered in other posts
« Reply #2 on: April 20, 2019, 01:38:40 pm »
Great job! Happy hot tubbing!
Award winning Hot Spring dealer for a gazillion years.

Hot Tub Forum

Re: FL1 error in Jacuzzi 345 that is not covered in other posts
« Reply #2 on: April 20, 2019, 01:38:40 pm »

 

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