tarheeltub7977

yeah mine is not THAT old. i have a pretty standard control pack and flow-thru heater tube (or whatever it's called).

Hi friends, longtime hot tub owner here. My old trusty Cal Spa (with Applied Computer Control pack) is continually having an issue with the pressure switch getting stuck open, on both high and low ... so my temp drops over time bc the heater is not running. If I hear it trying to turn on I can go out there and turn the jets off and on a few times and it will getting "unstuck" and start heating again, but by then the temp has usually dropped to the mid 90's and it takes hours to get back to 104, where we like to use it. I had this same issue toward the end of last season so I replaced the pressure switch at the start of this season .. no change. I replaced my heater coil 2 years ago. My water level is always fine - I do have a slow leak but I keep the water topped off (going to address the leaky union next spring when the weather warms back up and tub season is over). I recently did a fresh fill and made sure to purge the lines before turning the heat back on, I dont believe it's an air lock issue. So why would I keep getting the "PSoH" and "PSoL" switch errors?? Thanks in advance.

great, thanks so much. i truly appreciate your educating me this evening. very helpful!

ah okay, gotcha. so this is not an unusual circumstance when a tub uses Economy mode... in other words, nothing needs to be "fixed" ??

okay. i believe my sensor is in the flow through tube (it was originally mounted on the inside of the tub with the original layout). can i change the circulation delay to keep the temp higher?

it's this one ... https://hot-tubs-usa.com/not-specified/spa-control-hot-tub-heater-epack-controller-25x55-115230v-acc-smtd1500-4692

this is my owners manual, my board is the "1000" model ... let me know if you see something i dont see. thanks. http://acc-spas.com/wp-content/uploads/2017/06/77098-User-Manual-ePACK-5-2017.pdf

thanks, that's exactly what i want to do (put it in Standard mode) but it's not a Cal Spa control board ... it's Applied Computer Controls board and I cannot find a way to shut down Economy mode entirely.

yeah i was thinking the same thing (economy mode) ... it's an "applied computer controls" box and in the users manual i cannot find any way to shut economy mode off entirely ... i can only change the intervals between when it runs. so if i'm thinking through this correctly, i need to max out the interval time so it runs economy mode as little as possible throughout the day, right?

I have an older CalSpa, single pump. I have it set to 102 but it always drops to 88 or so between uses (over a 24 hour period or so) this time of year (average temps around 45). When I go out to use it I turn the pump and heat on and it will move back up to 100 or so within 5 to 10 minutes ... but I wish it would not drop at all to start with. I've looked over the users manual to see if it's some setting or whatever and cannot figure it out. Any ideas? TIA