What OP Means
OP means an open thermistor. The Electrolux service data sheet shows it by position: OP in the fridge window (with dashes in the freezer window) is an open fresh-food thermistor; OP in the freezer window is an open freezer thermistor. The owner article lists OP among the codes that need service.
Common Causes of OP
- Thermistor wire broken
- Thermistor connector unplugged
- Thermistor failed open
🔧 One Safe Check You Can Try
Note which window shows OP. Keep the doors closed and check food temperatures with a thermometer; the control may run on a fallback schedule without a sensor reading.
⚠ Why You Shouldn't Go Further Than That
- Thermistors sit behind interior panels and their wiring runs through the cabinet.
- The wrong sensor replaced wastes a visit.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.