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e. Carefully drop the impeller into the pump and ceramic shaft. The magnetism from the impeller is
strong so take care not to position your fingers between the impeller and the pump. Add a washer
on the ceramic shaft and a rubber cap over the washer.
f. Reinstall the water pump cover. Check to see that the rubber cap fits into the corresponding
opening on the cover. Screw down the cover using the 5 screws.
g. Install the reassembled water pump on the control base. Check to make sure the seal on the
pump housing in in place before putting in the pump. Secure the motor cover with screws.
Connect the water pump power cable.
Error Code E90 (Transformer)
1. Test the voltage of the transformer with a multi-meter.
a. Check terminals (1&2), (5&6), (C&D), and (Q&R). Set the multi-meter for AC current with a
range that will measure 12-14 Vac. Turn on the system and run the filtering function. Touch
each of the terminals with a multi-meter in pairs and see if the reading on the multi-meter is
between 12&14 Vac. Terminals (1&2) and (5&6) is equal to the socket output which depends
on the local power supply.
b. The test should be completed in 5 seconds after activating the filter function.
i. If (1&2) have a voltage reading and (5&6) do not, the PCB must be replaced
ii. If (5&6) are ok, and (C&D) and (Q&R) are not ok, the transformer must be replaced.
Proceed with the instructions below for replacing the transformer.
c. Replacing the transformer
i. Disconnect (C&D), (Q&R) and (5&6) on the PCB to disconnect the transformer. Then
remove a single screw that holds the outlet jet to a plastic support. Disconnect (7&8)
on the PCB to disconnect the air blower
ii. Remove 3 screws that hold the bubble blower to the heating element support and
disconnect the drain hose. Remove 1 screw that wired the blower to the heating
element equipotential bonding system.
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
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