It’s happened to me plenty of times – get myself all ready for a nice soak in the tub, lift the lid and find lukewarm water and no lights on the control panel.
It’s usually an easy fix, when you have no power to the spa – the greater disappointment is not being able to use the spa at that moment.
If you’ve ever found a ‘Dead Spa’, with no power at all, no indicator lights, nothing at all – this post is for you. Use these steps to troubleshoot a hot tub with no power.
Check the main circuit breaker that provides power to the spa. This may be located in the home main panel, or inside a smaller panel near the hot tub. To reset a circuit breaker, first push it towards OFF, and then flip it back to ON. If the breaker begins to repeatedly trip (known as nuisance tripping), it may need to be replaced, or there could be voltage irregularity. Consult your electrician for testing or replacement.
This one gets me all the time. My spa, and most others, have an electrical outlet attached to the spa pak. This is one of those GFI outlets with the red test button, and a black reset button. If you find it tripped, just push the red button back in. If the outlet continues to pop, either immediately or later, there is some stray voltage grounding out, and causing the button to pop. Consult an electrician to find the source, if not readily apparent (burnt wires, insects or rodent damage, water).
Spas and some hot tubs have internal fuses, which are meant to blow when voltage spikes occur, to protect your equipment (pumps, blower, heater). A blown fuse could just be a blown fuse, or it could point to a blower or pump that is shorting out, or it could mean the transformer is allowing too much voltage to pass through. Check your owner’s manual for location of any fuses, and always replace with the exact duplicate fuse.
Incoming wires can be damaged from heat or rodents, or you may have loose connections, or wires touching each other. This will often cause a breaker to trip or fuse to blow, but not always. If it’s the wires carrying power into the transformer, or out of the transformer, you can have a ‘no power’ situation. Shut off all power before touching or replacing any damaged spa wiring.
Tripped High-limit switch
In some spas, a heater high limit switch can cause a complete power shut down, to protect equipment (and you!) from harm. If your spa pak has a hi limit reset button, (usually red), give this a push to see if power is restored. Thermal overloads (motors, blowers), can also prevent equipment from coming on, but don’t usually shut down all power and lights to the spa.
A transformer reduces voltage, ‘transforming’ it to a specific lower voltage. A spa may have 220V coming into the transformer and 40 volts coming out, for example – but this varies from spa to spa. A voltmeter can be used to test the transformer output, to see that it’s within 10% of the rated output voltage, which is normally printed right on the transformer.
Finally, if you have no indicator lights on your control panel, look underneath for lights on the spa pak. For a control panel that is unresponsive, with no LED’s or temp reading, check the wire harness from the spa pak to the circuit board for a loose connection or damaged wire. It could also be a bad circuit board (but I hope not!).
~ Soooo, if your spa has no power, no lights, no nuthin’ – check out these 7 possibilities.
Happy Hot Tubbin’!
Hot Tub Works