E5
Insignia
Low or unstable supply voltage detected
Oven displays E5; may be associated with power-on or after a power outage.
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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
Loose power cord connection, Damaged terminal block, Undersized circuit or voltage drop, Internal control power supply fault
How to Fix / Troubleshooting
Safety First: Turn off the breaker before inspecting the power connections.
- Check supply voltage: Have a qualified person measure voltage at the outlet or junction box. Insignia electric ovens typically require 240 V AC (split-phase). Low voltage can trigger E5.
- Inspect terminal block: Remove the rear cover to access the terminal block. Tighten all screws and look for burnt or melted plastic. Replace the terminal block if damaged.
- Power cord: Ensure the range cord is the correct gauge and type for the oven’s amperage rating and is not overheated or frayed.
- Control board power supply: If line voltage is correct and connections are solid, the internal low-voltage power supply on the electronic oven control board may be failing and the board should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Terminal Block
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