Electrolux Air Conditioner Error Code F5

The F5 code means the outdoor discharge temperature sensor has been detected as either open or short circuited by the control board. This sensor monitors refrigerant temperature leaving the compressor and uses resistance values to communicate with the board. When those resistance values fall outside the expected range, the system triggers F5 and halts operation to protect the compressor.

No, you should not continue running the unit with an active F5 error. The discharge temperature sensor is a safety component that prevents the compressor from overheating. Without reliable readings from this sensor, the control board cannot protect the compressor from potentially damaging high-temperature conditions, which could lead to compressor failure.

Repair costs depend on the specific cause. If only a connector needs reseating, there may be no parts cost and minimal labor. Replacing a discharge temperature sensor typically involves parts costs in the range of $20 to $80 and a service call fee that varies by region. If the control board has failed, parts and labor combined can range from $150 to $400 or more depending on the model and local labor rates.

Some causes of F5 are straightforward to address, such as reseating a loose sensor head in the copper tube or reconnecting a loose wiring connector. However, testing sensor resistance against a specification table requires a multimeter and some familiarity with electrical testing. If the sensor or control board needs replacement, most homeowners will want to call a qualified technician, particularly because working inside the outdoor unit involves electrical components.

A power reset may temporarily clear the F5 fault display, but the code will return if the underlying sensor or wiring problem has not been repaired. Resetting without fixing the root cause does not resolve the fault and can mask a condition that may cause further damage. The sensor connection and resistance values should be verified before relying on a reset.