How to fix an airlock
How to remove an airlock from your hot tub
If your hot tub is having problems with circulation, or showing either dr or HH, you may have a large bag of air trapped in your piping system. This reduces the hot tub's circulation as the water is not allowed to flow properly through the heater and is called an "air lock". To fix this situation, please follow the steps below.
- Turn off your hot tub breaker.
- Open the control cabinet wall (on the pump / motor that is attached to the control unit by plumbing).
- You will see two pipes going onto the pump / motor held in place by large glands / nuts - the highest of the two glands needs to be loosened slowly so the air can be deflated, once water comes out, tighten the gland / nut back to. This allows the excess air to escape from the system.
- Turn the circuit breaker back on and turn on pumps / jets to make sure your water is flowing out of the jets.
To reduce the chance of an airlock, you should fill your tub by placing the garden hose in the filter compartment. This reduces the risk of air bubbles forming in the system.
If your spa is self priming (Pr is shown on the controller), press the Jets 1 button on and off to force the air out of the lines - be sure to only do this a few times or else if it puts extra pressure on the motor - do the same if Pump 2 is installed - if the spa is equipped with a circulation pump this cannot be done and the air must be removed using the above procedure.
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