I have a Balboa R574 control and heater on a Jacuzzi Spa. The motor starts and runs fine on low speed, but trips the exterior GFI after about three minutes running on high pump. The pump and motor were replaced this season. The heater and pressure switch are brand new. The red wire going to the J terminal looks like it over heated and is scorched. The fuse does not blow. What else should we look at? Thanks, Susan

GFI tripping is caused by an excess of electrical current between the device and the ground connection. The heater and pump should be on separate GFI circuits. Check to see which device is causing the fault and have it repaired or replaced.

Hi,

There are some things to check.
Make sure the vents on your cabinet are not obstructed.
Make sure your filter cycle is not too long
Make sure you are not running high speed for more then 30 mins.

Have you looked through the Balboa error message site. I have attached a link follow your error through and you may find your answer. Diagnostic Messages

Located behind the access panel there is a grey box that is the spa pack. Open that up with the 2 screws on the top of the pack. There is a small glass fuse on the circuit board. One of those fuses is most likely blown. If that is not the culprit you need a new topside control. More than likely it's the fuse.

Either the spa is incorrectly wired or one of the fuses is blown in the spa pack. Typically this is due to your electrician wiring the spa incorrectly and blowing the fuse on accident.

If the system is the Jacuzzi 52221-05 system mentioned in the subject header, there could be a stuck relay causing the problem and you might need to get a spa technician out to assist you in repairing the problem. However...

If it is a Great Lakes system as mentioned in your message body, then there could be a programming issue allowing the filter cycle to run continuously. Provide a model number off of the Balboa control. Then we can provide you an instruction manual or reference card to assist you in resolving this problem. you can also search our online manuals at our website. You can find them online at:

BALBOA WATER GROUP INSTRUCTION MANUALS

this should be simple ...
1.shut off the power
2.disconnect wires to heating element
3. turn power back on and see if it works if so replace heating element 45-95 dollars

if it still trips unplug all the cables from the pumps blower ozonators and see if it runs now,,,, if so plug each cable back (one at a time) until it trips again.if it trips that the problem pump etc.

99 percent of the the time its not the gfi its a device that is wet or shorted out ..Try everything else before replacing the gfi

This is probally a bad motor, the sound you hear is the motor trying to start but when it can't the breaker trips. If it takes a start capacitor it may be this rather than a motor but you will have to pull the motor to see. It may also be a clog in the pump but the motor sounds like the problem.

Check or substitute motor capacitor

EC stands for Economy. Change the mode until you reach ST and then it will stop flashing and function as normal.

Economy mode only allows the heater to function when the hot tub is on its filtration cycle.

Regards,
Ian.
http://hottub.synthasite.com