Compressor Overheating

What it means

This code appears on Panasonic inverter split air conditioners and is read from the fault history with the CHECK button on the remote. It means the compressor temperature sensor saw a temperature above the protection limit, so the unit stopped the compressor until it cools. The most common cause is low refrigerant, because returning refrigerant is what cools the compressor, and the unit may lock out if the code repeats. The same number can mean something different on other brands.

Models covered: Panasonic residential inverter split air conditioners (wall mounted); the code is read with the CHECK button on the remote control.

Related codes: F91H15F95F98

Symptoms4

• Weak cooling, then the compressor stops after running for a while.
• The outdoor unit starts and stops repeatedly.
• A hot smell or intense heat around the compressor.
• A lamp blinks on the indoor unit.

Possible causes5

• Low refrigerant from a leak, so less cool gas returns to the compressor.
• A blocked electronic expansion valve or filter limiting refrigerant flow.
• A dirty outdoor coil or poor airflow in extreme heat.
• A wrong reading from the compressor temperature sensor.
• Internal compressor wear raising its temperature (less common).

How to diagnose5

1. Switch off at the breaker, let the unit cool, and clear the area around the outdoor unit.
2. Recall whether cooling faded over recent weeks, a typical sign of low refrigerant.
3. The technician measures refrigerant pressure and pipe and compressor temperatures against the manufacturer specification.
4. The technician looks for a leak and checks the expansion valve and filter.
5. The technician measures the compressor sensor resistance against the manufacturer table.

How to fix5

1. Wash the outdoor coil and improve airflow around the outdoor unit.
2. Replace the compressor temperature sensor if faulty.
3. Repair the leak and recharge refrigerant by weight; this is work for a licensed technician.
4. Replace a blocked expansion valve or filter.
5. Replace the compressor at an authorized service center if it is damaged, then confirm the code does not return.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a sensor or dirty coil, moderate for leak repair, and reaches the top of the range if the compressor was damaged by running short of refrigerant.

Prices are rough estimates including the part and the technician’s fee, and vary with brand, model and part source.
Prices last updated: September 2026

Frequently asked questions