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Error Code

Kenmore Refrigerator rt Lo/Hi Error Code

Plain-language guidance for Kenmore code rt Lo/Hi on Refrigerator — symptoms, safe checks, and when to call a technician.

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At a glance

Error code overview

A plain-language snapshot of rt Lo/Hi for Kenmore Refrigerator — confirm the model series before you act.

Lena Hart Written by Lena Hart Appliance Repair Content Specialist Published October 20, 2026

Content status Verified

Error code rt Lo/Hi
Appliance Refrigerator
Quick answer

rt Lo or rt Hi marks an ambient temperature sensor failure on Kenmore Trio bottom-freezer refrigerators starting 111.

Model compatibility

Kenmore reuses codes across series and model years, so rt Lo/Hi may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

The ambient temperature sensor failed with a low or high reading.

A Kenmore bottom-freezer Trio refrigerator (model numbers starting 111) shows rt Lo or rt Hi when the ambient temperature sensor has failed, with a low or high reading.

Owner steps from the manual

Cut power by unplugging the unit, then examine the wires that join the ambient sensor to the control board. A broken wire should be mended.

Technician checks

With a meter on the ambient sensor circuit at the control board, a technician reads the resistance. A sensor outside 1,000 to 40,000 ohms gets replaced, and the display code resets after the repair.

Related Kenmore refrigerator codes

  • r1 Lo/Hi: the refrigerator compartment sensor on the same series.
  • rD Lo/Hi: the defrost sensor.

Kenmore refrigerator service in Los Angeles

If rt stays on the display, a Los Angeles technician can test the sensor circuit. Tell us the code, the 111 model number and any wiring you found when you schedule refrigerator service or call (310) 554-8899.

Source: Sears PartsDirect – Kenmore 111 model bottom-freezer refrigerator error codes

Caution

Safety warning

Important safety warning

Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.

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