Expanded exact-code directory
Kenmore window air conditioner, with or without heater error codes
Kenmore window air conditioner, with or without heater codes as Sears PartsDirect (Kenmore parts and repair) lists them, each with its meaning and the first safe check.
- ASA failed ambient temperature sensor, the sensor that
- OSA failed outdoor temperature sensor, the sensor that
Kenmore window air conditioner, with or without heater code CS: meaning and exact next steps
CS means a failed condenser temperature sensor, the sensor on the outdoor coil.
Open record Kenmore window air conditioner, with or without heater · exact codeKenmore window air conditioner, with or without heater code ES: meaning and exact next steps
ES means a failed evaporator temperature sensor, the sensor that reads the indoor coil.
Open record Kenmore window air conditioner, with or without heater · exact codeKenmore window air conditioner, with or without heater code HS: meaning and exact next steps
HS means a failed air outlet temperature sensor, the sensor that reads the air leaving the unit.
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Every Kenmore window air conditioner, with or without heater code: what it means and what to do
Kenmore window air conditioner, with or without heater code AS
A failed ambient temperature sensor, the sensor that reads the room air.
Unplug the air conditioner before opening anything.
Look at the harness connections on the control board and the board for damage, and check the ambient sensor's wires for a pinch or a break. A defective sensor is replaced.
Kenmore window air conditioner, with or without heater code OS
A failed outdoor temperature sensor, the sensor that reads the air outside the window.
Unplug the air conditioner before opening anything.
Look at the harness connections on the control board and the board for damage, and check the outdoor sensor's wires for a pinch or a break. A defective sensor is replaced.
Kenmore window air conditioner codes
A Kenmore window air conditioner with or without a heater reports faults through the display or lights, and many relate to the filter, the temperature sensor or the coils. Clean the filter, make sure the air flow is clear and that the unit is level and sealed in the window, and check that the room temperature setting is below the room.
A frozen coil needs the unit off and the fan on to thaw, and a code that returns after these checks points to a sensor or the control board. Do not open the sealed system.
A window air conditioner works best when it is sized to the room and installed with a slight tilt toward the outside, so that condensation runs out the back. A unit that is too small runs constantly and freezes up; one that is too large cycles on and off and does not dehumidify. If the model has a heater, it uses a separate element and a separate protection device, and a code may name it. Always plug the unit into its own circuit and keep the filter clean.
Window air conditioners are simple but they are sensitive to dirt and installation. The most common complaints are a unit that blows warm air, a unit that ices up, a unit that drips inside and a unit that cycles on and off. The codes in this table cover sensors, the compressor and the heater, and they help to separate a real failure from a unit that is only clogged. Start with the filter, since a blocked filter causes warm air and icing.
Cooling depends on air passing over the evaporator coil inside and the condenser coil outside. If either coil is coated in dust, the unit loses capacity. Switch the unit off, remove the front panel and clean the coils gently with a soft brush and a vacuum. Do not bend the fins. Check that the exhaust side is not blocked by a curtain or a plant, and that the side panels are sealed with no gap that lets warm air return to the intake.
Installation affects drainage: the unit should tilt slightly toward the outside so that condensate runs out the back. Water inside the room means the tilt is wrong or the drain hole is blocked. For a model with a heater, the heater uses a separate element and thermostat, and a code may name it. Do not run a window unit on an extension lead, and use an outlet that can carry the load.
Why does my window air conditioner freeze up?
Restricted airflow from a dirty filter or low room temperature is the usual cause. Clean the filter and let it thaw.
What size unit do I need?
One matched to the room's area; check the BTU rating in the manual.