E94
Intex PureSpa E94: water is too cold
E94 means the water temperature is too low. This wording is from Intex manual 347IO, printed 16 May 2024, for PureSpa SB-H20 at 220-240 V, 50 Hz. The parts table lists 28426, 28430 and 28476 for 4 adults (795 L) and 28428 and 28432 for 6 adults (1098 L). Manual 254PO from 2017 is 110-120 V and states this alarm with different temperatures.
Water temperature too low
Models this page covers: 28426, 28430, 28476, 28428, 28432
Do this first
-
Wait
Do not use it in air below 0°C
If the ambient temperature is below 0°C (32°F), the chart says not to use the spa. Leave it unplugged.
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Power
Unplug, then raise the water above 1°C
Turn the control unit off and unplug it. Add some warm water so the spa water rises above 1°C (34°F). Page 5 says never pour water hotter than 40°C (104°F) straight into the spa.
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Settings
Press the heat button
Press the heat button to bring the water up to the set temperature. The chart prints a flame symbol for that button. Page 15 names it the Heat button. Do not open the housing.
When to call a technician
Call a technician now if
- The breaker or the RCD trips when the pump is plugged in.
- You smell burning, see melted plastic, or the water is too hot to touch.
- The code comes back after one reset.
Also call for these, from the manual
- Contact an Intex service centre if E94 remains after the water is above 1°C and you have pressed the heat button. Do not open the heater.
Questions
Why does another Intex manual say 5°C instead of 1°C?
Manual 254PO, dated 12 May 2017, is a 110-120 V PureSpa. Its cold-alarm line says raise the water above 5°C (41°F). Manual 347IO says above 1°C (34°F), and it says not to use the spa when the air is below 0°C (32°F). Use the manual that matches the item number.
The same page mentions freeze protection. Is that E94?
It is a separate note under the chart. The heater is set to heat by itself if the water falls below 4°C (39°F), until the water reaches 10°C (50°F). The spa has to be plugged in with the RCD reset. That program cannot be switched off on the panel until the water is at least 5°C (41°F), unless you unplug it. For a long freeze, the page says to take the spa down and store it.
Other codes on this panel
Manuals we checked
- PureSpa SB-H20 owner's manual (347IO, 16 May 2024)
Intex · LED code chart, page 16 · Page checked 30 October 2026
28426, 28430, 28476, 28428, 28432
- PureSpa SB-H20 gebruikershandleiding (347IO, 16 mei 2024)
Intex · LED-code tabel, bladzijde 16 · Page checked 30 October 2026
28426, 28430, 28476, 28428, 28432