E95
Intex
High Temperature Cutoff / Thermal Fuse Trip
Control panel displays E95 and spa will not heat
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Heater tube overheated due to low flow, Thermal cutoff switch tripped, Scale buildup inside heater tube, Faulty heater relay or control board
How to Fix / Troubleshooting
Safety first: Disconnect power and allow the spa and heater pump unit to cool completely before attempting any checks.
- 1. Let the unit cool:
- Leave the spa off for at least 1–2 hours to ensure internal components cool down.
- 2. Check water flow:
- Clean or replace the filter cartridge.
- Verify that all inlet/outlet fittings are clear and hoses are not kinked.
- 3. Restart the spa:
- Plug in, reset the RCD/GFCI, and turn on filtration first.
- After a few minutes of circulation, enable heating and monitor for E95.
- If E95 returns: The internal thermal cutoff or heater assembly may be damaged. This typically requires replacement of the heater pump unit or heater assembly by a professional.
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Repair Difficulty
Professional Required
5/5
Required Part
Heater Assembly with Thermal Cutoff
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