Page 24
d. Replace any broken pieces and reinstall the shaft, impeller, washer and rubber caps.
Place a rubber cap on the end of the shaft and add a washer over it. Insert the end with
the rubber cap into the water pump.
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.
