Er04
Candy Overtemperature or Safety Thermostat Trip

Candy range oven displays Er04 and heating stops mid-cycle

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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

Blocked cooling vents, Failed cooling fan, Faulty safety thermostat, Control board temperature sensing error

How to Fix / Troubleshooting

Safety first: Turn off power and allow the oven to cool fully before inspection.

  • Check ventilation: Ensure the range has proper clearance and that vents are not blocked by cabinets or foil.
  • Inspect cooling fan: On models with a tangential cooling fan, access the top or rear and verify the fan spins freely and runs when the oven is on. Replace if seized or not powered.
  • Reset or replace safety thermostat: Locate the safety thermostat on the oven top or rear. If it has a reset button, press it. If it is open circuit and non-resettable, replace it.
  • Control board: If all hardware is good and Er04 persists, the control board may be misreading temperature and should be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Oven Safety Thermostat
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