Kenmore Refrigerator Er IS: Ice Maker Sensor Fault

Platform Identification

Your Kenmore refrigerator shows Er IS — an ice maker sensor error. This code is specific to LG-manufactured Kenmore Elite refrigerators with model prefix 795.xxxxx or 796.xxxxx. LG builds these units and uses their own error code system.

Check your model number sticker. Models starting with 106 (Whirlpool) or 253 (Frigidaire) use entirely different error codes and parts — this guide does not apply to those platforms.

What Er IS Means

Er IS indicates the temperature sensor located in the ice maker assembly has returned a reading outside the acceptable range. This sensor monitors the ice maker's environment to determine when to initiate freeze cycles, when to harvest ice (eject cubes from the mold), and when conditions are appropriate for ice production.

Without valid temperature data from this sensor, the ice maker cannot safely operate its heating and harvesting cycles. The board disables ice production and displays Er IS.

Impact on Refrigerator Operation

Er IS affects ONLY the ice maker — not the refrigerator's cooling system. Your freezer and fresh food compartments continue operating at normal temperatures. Food safety is not affected. The only lost function is automatic ice production.

If you have an urgent need for ice while awaiting repair, use manual ice cube trays placed in the freezer — the freezer itself works perfectly.

Understanding the Ice Maker Sensor

LG-built Kenmore Elite refrigerators use an NTC thermistor mounted inside or adjacent to the ice maker assembly. Its purpose:

• Detecting when ice is frozen solid — when the sensor reads below approximately 14F, the mold is cold enough that ice cubes are fully formed and harvest can begin
• Monitoring the harvest heater — during harvest, a small heater warms the bottom of the ice mold to release cubes. The sensor confirms the mold temperature rose enough for release without overheating
• Preventing operation if temperature is wrong — if the freezer environment is too warm (door left open, defrost cycle, etc.), the sensor tells the board to wait rather than attempting to make ice in suboptimal conditions

Diagnosis

Power Reset (First Attempt)

Unplug the refrigerator for 10 minutes. Restore power. Wait 24 hours and check if ice production resumes and Er IS clears. Transient sensor errors (from temporary condensation on the sensor or a board software glitch) resolve with this reset in approximately 20% of cases.

Locating the Ice Maker Sensor

The sensor is part of the ice maker assembly or mounted adjacent to it inside the freezer. On most LG-built Kenmore models:

• The ice maker is mounted on the left wall of the freezer compartment
• The sensor is either integrated into the ice maker module (part of the assembly itself) or is a separate probe mounted nearby with a wire running to the ice maker control board

Some models have the sensor accessible without removing the entire ice maker — it clips to the outside of the mold with a wire lead. Others integrate it inside the module, requiring ice maker removal to access.

Testing the Sensor

Disconnect the ice maker from its power harness (a connector on the wire running from the ceiling of the freezer to the ice maker assembly). With the sensor disconnected:

• Measure resistance across the sensor leads at freezer temperature (~0-5F): expect approximately 20,000-30,000 ohms (varies by model — NTC resistance increases significantly at low temperatures)
• Bring the sensor to room temperature and re-measure: expect approximately 8,000-12,000 ohms
• OL (open) at any temperature: sensor has failed
• Near zero at any temperature: sensor is shorted
• Readings that do not change with temperature: sensor element is dead, reading is from a different circuit path

Connector and Wiring Check

The ice maker wire harness passes from the freezer ceiling area (where the main board harness enters the compartment) down to the ice maker. This connection point at the ceiling is a common failure location — ice forms on connectors in the freezer environment, corroding pins over years.

Disconnect, inspect for ice/corrosion on pins, clean with contact cleaner, reconnect firmly.

Repair Options

Option 1: Replace the Sensor (If Separate Component)

On models where the thermistor is a discrete component clipped to the ice maker:

• Part: varies by model (search by full Kenmore model number)
• Cost: $15-$40
• Installation: unclip old sensor, clip new one in same position, reconnect wire

Option 2: Replace the Ice Maker Assembly (If Sensor Is Integrated)

On models where the sensor is built into the ice maker module and not separately replaceable:

• Part: LG ice maker assembly (AEQ series part numbers common). Cost: $80-$160
• Installation: disconnect wire harness from ceiling connector, remove mounting screws (2-4), pull old ice maker off wall, mount new one, reconnect harness. 20-30 minutes.

Option 3: Board-Level Fault

If the sensor tests good and wiring is intact, the main board's ice maker sensor input circuit may have failed. Board replacement: $120-$250. This is diagnosed by elimination only.

Cost Summary

Can You Live Without Ice Making?

Yes — indefinitely and without any negative effect on the refrigerator's other functions. Er IS only disables ice production. If you rarely use ice or are willing to use manual trays, this repair can be deferred without urgency.

However, on LG-built models where the ice maker shares a temperature zone with the freezer's main compartment, a failed ice maker sensor can occasionally confuse the board's defrost logic (since the board uses all available temperature inputs for adaptive defrost decisions). If you notice unusual ice buildup in the freezer after Er IS appeared, this interaction may be occurring — repair becomes more advisable.

Frequently Asked Questions

Is Er IS dangerous? No. Ice maker sensor failure has no safety implications. Your food remains safely stored.

Will my water dispenser still work with Er IS? Yes. The water dispenser is independent of the ice maker sensor. Only ice production is affected.

My ice maker was already producing less ice before Er IS appeared. Related? Likely yes. A degrading sensor would give increasingly inaccurate readings before failing completely — causing the ice maker to cycle less frequently or at wrong times. The progressive reduction in output was the sensor dying gradually.

How long does an ice maker sensor last? Typically 6-12 years. The sub-zero environment accelerates sensor aging compared to sensors in warmer locations.

Can I bypass the sensor to force ice production? Not safely. The sensor prevents the harvest heater from overheating the ice mold (which could melt surrounding plastic or damage the ice maker mechanism). Operating without temperature feedback risks damage to the ice maker assembly.

Important Note About Kenmore Parts Ordering

Because Kenmore is a multi-manufacturer brand (not a maker itself), parts must be ordered by the actual manufacturer's part number — not by searching "Kenmore refrigerator parts." Your model number prefix identifies the real manufacturer:

For refrigerators: the most common Kenmore refrigerator manufacturer is LG (prefix 795.xxxxx or 796.xxxxx for Elite refrigerators). Parts websites like PartSelect and RepairClinic accept your full Kenmore model number and automatically cross-reference to the correct OEM part number. Always verify the part number matches before ordering — similar-looking parts from different manufacturers are not interchangeable even though both machines say "Kenmore" on the exterior.

The Sears Parts Direct website (now Partstown) also stocks these parts but typically at a higher price point than ordering the OEM part directly from an appliance parts wholesaler. Shopping by the OEM part number rather than the Kenmore part number often saves 20-40% on identical components.

Er IS on your Kenmore Elite? Our technicians carry ice maker assemblies and sensors for common LG-built models. Same-visit restoration of ice production. Book your repair.