Diagnostics

Spa Repair Diagnostics-Testing Fuses

 
 

Checking Fuses

 

Control boxes have several fuses. In this example there are 2 shown in red circles.

The best way to test a fuse is turn main power to the spa OFF. Set your meter to OHMS. Place one probe on each side of the fuse. If your meter showns fuse contininuity the fuse is fine. If the meter shows no continuity replace the fuse.

In this example the smaller glass fuse is in place to protect the board from damage. It would be the likely fuse to fail. The larger fuse on the bottom of the box is there to protect the pump motor(s).

IF your spa has passed both the incoming power test and the fuse test we then focus on the transformer.

 

it will look something like this

DiagPic5

 


 

 
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