Classic Built-In refrigerators such as the BI-36UFD/S show 10-R-09, sometimes shortened to R9, when the refrigerator evaporator thermistor reads too warm. Specifically, the coil sensor reports a temperature at least 10 degrees higher than the refrigerator…
Classic Built-In refrigerators such as the BI-36UFD/S show 10-R-09, sometimes shortened to R9, when the refrigerator evaporator thermistor reads too warm. Specifically, the coil sensor reports a temperature at least 10 degrees higher than the refrigerator cabinet thermistor. A coil should be colder than the space it cools, so the board flags this mismatch. You may see a warmer fresh-food section along with the code, or only the code if it is caught early.
1. Check the refrigerator temperature with a thermometer. 2. Clear any items blocking the vents inside the refrigerator. 3. Close the door firmly and confirm the gasket seals. 4. Reset the breaker once. 5. If the section stays warm, move perishables to a cooler.
R9 is the short form of 10-R-09. It means the refrigerator coil sensor reads at least 10 degrees warmer than the cabinet sensor, which should not happen in normal cooling.
It can be either. A sensor that slipped off the coil reads warm, but so does a coil that is not cooling. We check both readings and the coil before deciding.
If the refrigerator section is warming, move perishables and book a visit soon. We give a written price before work and back our labor for 30 days.
A technician diagnoses it on site and gives you the price in writing before any work starts.
