Midea Air Conditioner Error Code HS

The HS code on a Midea air conditioner means the control board has detected an open or short circuit in the exhaust temperature sensor circuit, at sensor T5 or T6. These sensors track the temperature of gases exiting the compressor and are critical for protecting the system from overheating. The unit will typically stop operating until the fault is resolved. A technician should inspect the sensor wiring and measure the sensor resistance to locate the fault.

No, you should not attempt to bypass or ignore the HS fault and continue operating the unit. The exhaust temperature sensors exist to protect the compressor from overheating, and running the system without reliable sensor feedback can lead to compressor damage, which is a significantly more costly repair. Leave the unit off until the fault is diagnosed and corrected.

A power reset may temporarily clear the HS code, but if the underlying sensor or wiring fault still exists, the code will return once the unit attempts to operate and reads the faulty signal again. Resetting without repairing the root cause does not fix the problem and can delay proper diagnosis. The sensor connection and resistance values should be checked before assuming a reset has resolved the issue.

A homeowner comfortable with basic electrical checks can inspect the sensor wiring connector for looseness or corrosion and reseat it, which sometimes clears the fault. However, measuring sensor resistance, diagnosing wiring faults, and replacing PCB components requires a multimeter and technical knowledge. If the sensor or PCB needs replacement, it is recommended to have a qualified technician perform the repair to avoid damaging the system.

Repair costs depend on the root cause. If only a connector needs reseating, there may be no parts cost at all, just a service call fee typically in the range of $75 to $150. Replacing a faulty T5 or T6 temperature sensor usually costs between $50 and $150 in parts plus labor. If the PCB requires replacement, total costs can range from $200 to $600 or more depending on the unit model and local labor rates.