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If the air blower is too noisy:
1) First check the sound on the air blower is making with a psophometer. The Control Base
should not be attached to a Tub. Run the air blower function and check for the noise level
using the psophometer.
2) If the noise is less than 90 decibels, there is no problem with the air blower. If the noise is
louder than 90 decibels, proceed to check the air blower.
Ensure that the air blower is securely attached to the inside of the spa and the seals between
the Control Panel and Control Base are intact.
3) A loud noise could also be due to a bad check valve within the spa tub. This can be checked
by disconnecting the spa tub from the control base and running it on a different tub.
Vertical air blower tube that heads to the Control Panel. Pull out the old air blower and install a
new one.
4) Lastly, the problem could be due to a bad air pump OR an air pump that is beyond its
lifetime. Air pumps have a life time of about 500 hours. Air pumps in this condition will make a
very painful high pitched squeal sound or a low and deep sound.
Bad air pumps also have a lowered PSI. Normal PSI for an air blower is about 2.8 PSI. A PSI
of 2 or less also indicates a bad air pump. Proceed to replace the air pump:
Access the inside of the Control Base. Release terminals 7&8 and the wire leading from the air
blower to the grounding box. Unscrew the black cover behind the air blower and remove the
screws that hold it down. Pull out the old air blower and install a new one.
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