E7
RCA
Low Voltage or Power Supply Error
Display shows E7 and oven or cooktop may not operate; sometimes appears 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
Incorrect line voltage to range, Loose power cord connections at terminal block, Damaged power cord, Internal control power supply fault
How to Fix / Troubleshooting
Safety first: Turn off the breaker and verify power is off before opening the rear terminal block cover. High voltage can cause serious injury.
- Check supply voltage: With a qualified person and a multimeter, verify 240 V across L1 and L2 and 120 V from each leg to neutral at the terminal block.
- Inspect terminal block: Look for burnt or loose connections where the power cord attaches. Tighten screws and replace any burnt terminals or the terminal block if damaged.
- Inspect power cord: Replace the range power cord if insulation is damaged or conductors are burnt.
- Control board: If supply is correct and connections are solid, the internal power supply on the control board may be faulty. Replace the electronic oven control board.
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Repair Difficulty
Hard
4/5
Required Part
Terminal Block
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