Refrigerator runs constantly and is too cold; food freezing in fresh food section.

Safety first: Unplug the refrigerator before accessing sensors or the damper assembly.

Step 1 – Check temperature settings:

• Verify that the fresh food temperature is not set below recommended (37°F / 3°C).
• Adjust upward if necessary and monitor for 24 hours.

Step 2 – Inspect air damper:

• Locate the damper at the top of the fresh food section.
• Check if the damper door is stuck open, allowing excessive cold air from the freezer.
• Replace the air damper assembly if it cannot close properly.

Step 3 – Test fresh food thermistor:

• Access the thermistor and test resistance at known temperatures.
• A shorted thermistor (very low resistance) can cause overcooling; replace if out of spec.

Step 4 – Control board evaluation:

• If damper and thermistor are good, the main control board may be commanding excessive cooling and may require replacement.

When to call a technician: For persistent overcooling after part replacement, contact a GE Monogram technician.