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iii. Remove screws holding air blower to the rest of the jet. Use wrench to
disconnect the threaded nut of blower. Remove 3 screws holding the black
part above the transformer
iv. Once the transformer has been exposed, remove 2 screws holding down the
cover on the transformer. Take off the cover to expose the transformer. At the
picture below, all parts taken from the jet spa are laid out for reference.
v. Once the transformer has been exposed, it can be taken out and replaced.
Error Code E90 (PCB)
1. Test the voltage of the PCB
a. Check terminals (A&B). Set the multi-meter for AC current with a range that will
measure 12-14 Vac.
Touch one of the multimeter’s leads to A and the other to B. Turn
on the system and run the filtering function. See if the
reading on the multimeter is
between 12 & 14 Vac.
b. Replace the PCB if the unit fails to give a reading. Follow the PCP replacement
instructions.
