Hot Tub Troubleshooting
Hot tubs can have problems no matter who the manufacturer is. This is because many of the components that go into a hot tub are supplied by third parties anyway, so whether you buy a Catalina Spa, Marquis Spa or QCA Spa, the electronic equipment is made by Balboa Instruments and the troubleshooting steps are the same.
Spa packs contain the spa electronics including the spa circuit board, heater and temperature sensor connections. Whenever there is a problem with a spa, it is best to leave the troubleshooting to experienced personnel as working with electricity and water is extremely dangerous. We offer these troubleshooting steps as reminders to experienced spa technicians or to consumers to be able to understand the troubleshooting process better.
Hot Tub Control Panels Show Error Codes and Messages
Many hot tubs have control panels that will show error codes and assists in troubleshooting a problem. Even simpler topside controls will flash error codes when something goes wrong with the electronics.
For example on a Balboa Spa Pack when the message: "HTR TEMP LMT" comes on, it means that one of the sensors has detected water temp of 118 degrees in the heater. This could be caused by several things:
- a dirty filter is restricting flow
- the pump didn't start when the system called for heat
- problem with the heater
Once the water cooled to > 105 deg you can touch any button to reset the system.
Many times the cause of a problems is water quality or filter related. Simple monitoring of spa ph levels and maintenance of spa water quality will help avoid some technical problems.
Clean the spa filter regularly to avoid technical problems caused by restricted water flow.
The troubleshooting steps taken by spa professionals usually involve isolating the problem component and then checking upstream and downstream of the problem to confirm the problem component has been isolated. Then it is just a matter of swapping out the bad part or repairing it.
The most basic problem is: My Spa Doesn't Work!
This doesn't really give the technician on the phone much to go on. It is better to advise if there is any error display on the topside control, if there is anything at all on the topside or if anything at all works. If not, then it is also important to confirm that everything upstream of the hot tub is working. This means that the circuit breaker or GFCI, or outside disconnect box has not tripped or been turned off.
Once it is confirmed that power is actually getting to the spa, then next steps can be determined. Power goes to the spa pack and circuit board. If there is no readout at all, but there is power, then has the main fuse on the spa pack blown? Main fuses are usually large 30 Amp fuses that protect the circuit board from melting down in the case excessive voltage is applied to the input such as during a power surge.
In some instances, lighting strikes nearby may cause such an excessive spike that the 30 Amp fuse does not blow, but say the transformer in the spa pack is destroyed.
If there is a short circuit on the other hand, power will not be getting to the spa because the circuit breaker or GFCI has tripped. This can be caused by the power wires not connected properly to the main connection on or near the circuit board (terminal block). A short circuit can also be caused by a failed component in the spa such as ozonator, blower, heater or pump.
Taking time to be cautious, turing power off before working on electronics and going step by step to isolate any given problem will turn up the culprit component or uncover the problem. Once the component has been identified such as a short circuit in the blower or ozonator, then the old component is simply swapped out for a new one. Buying spa components online is simple and many times the exact same component brand can be sourced because the spa manufacturers just buy those parts from a third party anyway.
Hopefully you can have any problem with your spa repaired quickly and get back to the business of relaxation, water therapy and having fun!
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