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What is the model and serial number of the hot tub?
• This will help determine how the hot tub should be hooked up.
Did a licensed electrician hook up the hot tub?
• See question number one!
What is the voltage at the hot tub?
• Always have your meter with you!
What is voltage between the neutral wire and the ground?
• There should not be a neutral wire! (Except on J-315, J-325 models.)
What is the voltage between the two hot leads?
• This should be 240 VAC (120 or 240 VAC on J-315, J-325), ±10%. If there is no voltage, then you
have lost a hot leg or the GFCI has tripped. Verify voltage at the GFCI, if the GFCI is not tripped
and you don’t have 240 VAC (120 or 240 VAC on J-315, J-325) at the hot tub, then the problem is
between the GFCI and the hot tub. A licensed electrician should be called at this time.
What is the voltage between one hot lead to ground, and the other hot lead to ground?
• This should be 120 VAC.
What is the voltage between one hot lead and the neutral?
• There should not be a neutral wire! (Except on J-315, J-325).
Are the wires connected to the proper position inside the hot tub load box? Veri y and be speci c.
• Wires incorrectly hooked up to the main terminal block will cause the GFCI to trip or the hot tub
will not function properly.
What is the voltage at the hot tub when all of the components are energized?
• Voltage to the hot tub should stay consistent with or without the components energized.
Are all of the connections tightened down properly?
• Loose wires will cause them to get hot. Look for melted wire coverings or burnt connections.
Are there frayed or loose wires touching metal?
• Any wires that are hot and are touching metal will trip the GFCI immediately.