LG Washer Error Code CH01

CH01 indicates that the indoor temperature sensor circuit has been detected as open or short circuited. The control board monitors the voltage signal from this sensor and triggers the code when that signal falls outside acceptable limits. The machine will not operate normally until the fault is resolved to prevent running without valid temperature data.

It is not recommended to continue operating the washer while CH01 is active. The machine has flagged that it cannot reliably monitor temperature, which means it may not regulate wash conditions properly. Continuing to run the unit risks incorrect cycle performance and could potentially mask a more serious underlying fault.

Repair costs vary depending on the cause. Replacing an indoor temperature sensor typically ranges from around 15 to 50 dollars for the part, with labor adding more if a technician is used. If the control board is at fault, board replacement costs can range from 100 to 300 dollars or more depending on the model. Diagnosing the specific cause first with voltage and resistance checks can prevent unnecessary part replacement.

Some causes of CH01 are accessible to a knowledgeable DIYer. Reseating a loose connector, inspecting wiring for visible damage, and testing the sensor resistance with a multimeter are reasonable first steps. If the sensor has failed or the control board reference voltage is incorrect, replacing components typically requires comfort with electrical testing and appliance disassembly.

A power reset may temporarily clear the code if the fault was caused by a transient condition such as a momentary loose connection, but it will return if the underlying problem is not corrected. If the sensor has failed or wiring is damaged, the code will reappear as soon as the control board attempts to read the sensor signal again.