When the jacuzzi have this device do the both handles have the same temputure water

Follow the link, you need to "Descale" the heater. Tankless Water Heater DeScaling How To Flush

There is a ground fault somewhere...you need to isolate it with an ohm meter.

What is the problem you afe having with your Jacuzzi Water Heater?
Is this a Jacuzzi Hot Tub?-- Do you have some indicator lights on?-- what color are the lights?--
Is the Circulating pump running water thru the heater element?
Tell me more!-- Let's walk thru the system, and figure it out-- Mack B

http://www.manualnguide.com/

ok you will need to replace the rubber seat and spring under each valve. You start by removing the plastic insert in the center of the valve. Remove the screw inside of handle and pull handle off. There will be a gasket under that and then you will see a bonnet. MAKE SURE THE MAIN WATER IS OFF before you proceed any further. Remove the bonnet by turning it counterclockwise. Once you have removed the bonnet then pull the stem out make sure you take care to notice exactly how it came out. Underneath the stem is a rubber seat and spring you can use a phillips screwdriver to insert in them and remove both. Replace them with new ones and re-install. If you are not very good at this sort of thing I recommend you call a repairman. Inserting of the stem back in its proper place is extremely important as it has to seat or it will not function properly. If you have any questions just ask.

Thx

hook up a garden hose to a faucet. Put the other end in your spa. Then turn on the faucetuntil water comes out the spa end of hose. Make sure the end in the spa is weighted down so it doesn't come out. Then remove the hose from the faucet and keeping it lower than the spa lay the hose where it can drain with causing problems. The water will flow on its own draining the spa. You may want to clean it while its draing so the dirty water will be diluted and drain at thhe same time. Make sure the water is not drained out around any electrical AND!!! NO DIVING!!!! If you lose the prime, just fill the hose again with the faucet. Good luck

The heater will only fire if it has water in it. If you just got the house, make sure the gas/electric to the heater is on. Turn off the pump and turn it back on.. See if that works. good luck

go to jacuzzi.com - downloads

im not a great expert in this field but try putting some dish washer tablets in water when running to see if they can clean out anything,about 3/4 tabs