I just joined the community here looking for some help with my hottub which started acting weird. I *think* I mostly likely need a new pump, but I figured I'd post and get some opinions first.
It's a 2010 and the spa was made by a company called Strong Spas. It has a Balboa Revolution (TP600) control system and a Water Way pump (model # PV-30-2N22C). I don’t know much more than that as the tub came with the house.
Anyway, it’s worked fine for the last 3 years that we’ve had it. Today we went to use it and when I opened the cover the low power jets were running, I figured it was either heating or filtering, so didn’t pay much attention. I hit the Jet button again to turn on the full-power jets and the pump made a loud grinding/hum noise and then shutdown. If I hit the button again for low pressure jets they’ll come on and run normal, but as soon as I try to turn it to full power jets the pump makes a noise and then shuts down.
I took the side panels out to investigate and couldn’t find anything obviously wrong, although the motor does seem to be running hot. I turned off the main power and left it for about 4 hours, then turned the power back on and tried again with the same results.
If I watch the pump when someone else turns the jets up I can see it running normally, then as my wife hits the jet button the pump does step up to full speed (although noisy) for about 2 seconds and then shuts right down. If I don’t touch anything after it shuts down, every minute for so it’ll start itself up to full power, run/grind/hum for the 2 seconds and then shutdown. Turning the jets back to low power the pump resumes normal operation.
So far my thoughts are:
-Capacitor on the motor is too weak to get the motor to full speed – maybe not likely since it does run at full power for a second or two…
-There’s a faulty pressure switch somewhere that’s shutting the pump down thinking that it’s dry (it’s not – I’ve checked and there doesn’t appear to be air in the system, and the water level is where it should be)?
-The pump itself is bad/worn out and it putting itself into some kinda protection mode whenever the jets are turned up?
Any help or advice with this is much appreciated.