Error Code E90 (Heating Element / Heater Set); Error Code E94 - Intex Pure Spa BUBBLE SB-HWF20 Repair Manual

Error Code E90 (Heating Element / Heater Set)

To change the heating element, first disconnect the flow sensor cables, temperature sensor
cables, power terminals (9 to 12). Remove the 4 screws holding the heating element. Release the
water tube under the heating element by hand. Disconnect the external equipotential bonding
conductors on the heating element. Ensure these equipotential cables are reinstalled.

Error Code E94

This code indicates very low water temperature which could be due
with the 20-40 C water temperature sensors. Please follow the logic diagram and instructions as
below:
Begin the test by installing the spa control base and panel to a tub filled with water to the
recommended level. Make sure that the water inside the tub is not colder than 4℃. Turn on the spa
control base.
Run the filtering function for 1 minute. If the spa display does not indicate an error code and the unit
is circulating water without issue, no further troubleshooting is necessary. Remove the unit for
further testing if Error Code 94 is confirmed.
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Display E94
3. Add warn water if water temp. <4℃
4. Replace 20-40 temperature sensor
5. Or replace a PCB
Run heat 5 min.,
E94?
Yes
Go Back to Next Step
frigid water or a problem
to
END
No