Flo Error on 2004 Sundance Altimar

[robsss]

Have a flashing Flo error on my 2004 Sundance Altimar hot tub.

Had the same issue about 2 years ago and replaced the circ pump and was back in business. The pump was running extremely hot to the touch.

So I am getting the same flashing Flo error now.  Looking at the pressure/flow switch it is not making contact (i.e. not moving). I do see water flow though the pressure switch.

I drained and refilled the tub, ran the tub without the filter and replaced the pressure switch with a new one.  Still have the same issue.

When I put on the jets they all seem to be at normal output. The Flo error never goes away even with all of the jets on.

Any ideas?

Thanks,
-Steve

[clover]

When the flow switch does not close it is because of the lack of "adequate" water flow.  Based upon what you have said, I would be looking at the circulation pump.  If you have a volt meter, check for 240 volts going to the circ pump.  If the voltage is there, the pump is bad and needs to be replaced (again).

[robsss]

Thanks for the quick reply.

Is it common for a pump to only last a couple of years?

And just to double check - the "main" pump does not push water through the switch, only the circ pump.

Is there anything else to look for at the circ pump (besides the voltage)?

-Steve

[Kev B]

 Just ran into this issue not long ago on an 0/5 Majesta. The discharge of the circulation pump had a tee in it and some water went to another line away from the heater. I think this was a mistake for Sundance to do this, especially now that I see it again in here.(If yours is the same set-up) I called the dealer in town to talk to their head tech and he had no clue what I was talking about. So I went back to the job because customer had a bad experience with them and did not want them back. I disconnected the 3/4" line on the heater return and blew it out with a shop vac to see if their was a restriction in the line and found nothing unusual, but when I re-connected everything it restored enough flow to engage the flow switch. The line that bypassed the heater after the pump had very strong flow. I did a minimum charge on this one and told the customer to call me back if it happens again. I will call Sundance themselves next time, even though they only want to deal with their dealers.