RCA freezer display shows L1 or "LO"; interior may be extremely cold and some items may have freezer burn.

Safety first: Unplug the freezer before accessing sensors or the control board.

Steps to correct low temperature alarm:

• 1. Check setpoint: Verify the temperature setting on the control panel. For most RCA freezers, -5°F to 0°F (-21°C to -18°C) is adequate. Raise the setpoint slightly and monitor.
• 2. Power reset: Unplug the unit for 5 minutes, then plug it back in to clear any control glitches.
• 3. Inspect cabinet thermistor: If the compressor seems to run longer than normal even after adjusting the setpoint, test the cabinet temperature sensor as described for code E1. A shorted thermistor can make the board think the freezer is warm, causing overcooling.
• 4. Observe compressor cycling: Over several hours, listen for the compressor turning off periodically. If it runs nearly nonstop and the interior is excessively cold, the control board may not be regulating properly.
• 5. Replace faulty parts: Replace a defective thermistor first. If the problem persists, an RCA-compatible main control board may be required.

Note: Extremely low temperatures can damage some foods and increase energy use. Address persistent L1/LO conditions promptly.