I have a 2000 Sovereign Hot Spring hot tub that quite heating, I checked filters they are ok, I have no air lock, The jets and light work fine. Inside the control box on the circuit board all 3 led lights are on. Please HELP.

Check the thermocouple on the water pipe.

Hi Claude.
If your spa jets appear to be pulsating or pausing, first check to make sure your filter isnot clogged. If your filter appears to be okay, you should next take a look at your hot tub's water level. If there is too little water, air could be working its way into the system through the jets.

Why are My Hot Tub Jets Not Working? ' Master Spa Parts

How to Replace Water Jets in a Hot Tub

1. Turn off your hot tub. ...
2. Reach into the tub and grasp the outside edge of the damaged water jet. ...
3. Place your water jet face down on a level surface. ...
4. Line up the notched tab on the back of the jet with the groove inside the jet housing. ...
5. Turn on your hot tub.
6. Things You Will Need. ...
7. References (3) ...
8. About the Author.

How to Replace Water Jets in a Hot Tub ' Home Guides ' SF Gate

How To Clean Bathtub Jets with Basic Household Ingredients

1. Fill the tub until the jets are covered by 2-3 inches of hot water.
2. Add 2 Tablespoons of a low-sudsing dishwashing liquid and 1/2 cup of bleach. ...
3. Run the tub's jets for 15 minutes.
4. Empty the tub, and refill it (cold water is fine this time). ...
5. Drain the tub and rinse it well to get the gunk off.

More items...
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4 Sep 2014

How To Clean Bathtub Jets with Basic Household Ingredients ...

or read up more at this link.

https://www.google.com/search?q=Aeromax+tub+some+jets+not+blowing+air&rlz=1C1AVFC_enGB797GB798&oq=Aeromax+tub+some+jets+not+blowing+air&aqs=chrome..69i57.7532j0j9&sourceid=chrome&ie=UTF-8

it's likely due to an air lock. Here's what you can do to resolve this issue:

Manually Clearing an Airlock:
Run the jets on low for about 30 seconds.
Then run the jets on high for another 30 seconds.
Repeat this process 3 or 4 times.
If you hear a gurgling sound and see air bubbling up, continue running your hot tub until it pushes all the air out.
If this doesn't work after several attempts, try a different approach.
Bleeder Valves or Pump Method:
Some spas have bleeder valves that allow you to bleed air out of the lines.
First, turn off the spa at the breaker.
Access the pump and loosen the valve to allow the air to escape.
When the air has bled out (you'll notice it turns from hissing air to a stream of water), close the valve.
Run the pump to ensure the jets are now pumping water as expected.
Why Are the Jets Not Working on One Side Only?:
Many hot tubs have two water pumps.
If the jets on only one side of your hot tub stop working, there could be an airlock in only one of the pumps.
It could also be a blockage in the jet lines for that side or a problem with the internal mechanism of the jet itself.
Can You Use a Spa with an Airlock?:
It is not recommended to use a hot tub with an airlock.

When you say nothing happens, I wonder if the unit is making any sound at all or do you mean there is no water flow? If there is no water flow in your hot tub or spa then it could be just a simple air lock. Often when you drain your hot tub or spa you have to prime the system afterwards, this includes the pump but may also include the suction lines. The suction lines can develop an airlock in the upper portions of the suction line. To remove an airlock you simply force water into the suction line or release the air in the line by opening a union. Hot Tub Repair 101 What is an E6 or Error 6 Code Mean

Additionally, you could need new hot tub filters. If the filters are dirty and water flow is restricted your power pak may shut itself down as well. This can be as simple as cleaning your filters or replacing them. Hot Tub Filters

Here are a few things to consider

• release any air locks
• clean filters
• make sure there is no obstructions in the lines
• check to make sure GFCI is operational

I hope this helps.

I would try writing or calling...
http://www.royalsovereign.com/customer-support/contact-us.html

When spas turn on initially they run through a purge cycle. This when the pump runs for a few minutes to remove any air in the heating system so the heater does not dry fire.
If your system runs through the start up cycle just fine but kicks the breaker when the heater starts then the heating element is bad and needs to be replaced.

Rod
US Parts Center
888-521-6183

Can you close a valve to bypass the heater to see if the problem is in the heater?

Check for voltage at the pump, before assuming the relays are out... then check for voltage before and after the relay contacts

you might have an air lock, when you first start filling the spa, start the water running in the skimmer first. that should force air out of the pump and should pick up prime right away. if not, you may have a valve problem.