You went out to your Sundance Spa and you see that it's not working and the display panel shows “- – – -“. This is the Watchdog error. What does that mean? What do you do now? I have some answers to help you on your way!
Most of the time, you Are going to need to call a service technician. BEFORE you do that, though, the best thing to do is shut off all power to your hot tub and give it at least 15 minutes for everything to reset. Go do that now, if you're having this problem, then read on! (No, really. Go disconnect the power to your spa!)
Alright. What causes the Watchdog error? MOST of the time, this is caused by a faulty temp sensor or flow switch. Occidentally, it is a circuit board issue. On very rare occasions it could have been the control panel or a transformer. It could also just be a power spike, which is why we want to give it a chance to reset before you call anyone out to work on it. Fairly often, if you shut it off for 30 minutes, completely disconnected from power, and then connect it again – you'll see the error go away.
If it is the temp sensor or the flow switch, it can be fairly quick and inexpensive to replace, and those are the most common problems. A Sundance Certified Technician will not have any problem replacing the faulty parts and getting you quickly back to enjoying your hot tub. When they come out, they will test different jumpers on your circuit panel to diagnose which component of your spa needs replaced.
Now that you know more about the Watchdog Error on Sundance Spas, go ahead and try powering your spa on again (as long as it's been at least 15 minutes) and see how it does! If it's working like normal again, do not worry about it. If it goes into Watchdog again, call your local service tech-and do not worry about it!
What can you do to help keep your spa from having errors like this? It is always a great idea to keep your water balanced and to clean your tub every 4-5 months. When I say balanced, you MUST watch your PH levels and your calcium hardness levels. If your water is too hard, it can cause buildup in the lines and on things like your flow switch. PH levels that are not balanced can cause corrosion of your tubs components. Make sure when you drain and refill your tub that you use a true spa cleaning solution and let the jets run for 20-30 minutes, if not longer, before draining. A lot of buildup can hide in your lines, and it can take time to loosen and be removed.
Thanks for reading!