Compressor Discharge High Temperature Protection

What it means

This code appears on Gree split air conditioners when the discharge temperature sensor, on the pipe leaving the compressor, reads above the protection limit. Inverter models first reduce compressor speed, then stop it if the temperature keeps rising, and restart once it cools. The same code can mean something else on other brands.

Models covered: Gree split (wall-mounted) air conditioners, mainly inverter models; the code shows on the indoor unit display. Older non-inverter models may show fewer codes.

Related codes: F5E3E1H3

Symptoms4

• Weak cooling with frequent compressor stops.
• The outdoor unit is very hot, especially around the compressor.
• The code appears after some running time, not at start-up.
• Cooling gets weaker on very hot days.

Possible causes5

• Low refrigerant from a leak, so too little returning gas cools the compressor, which is the most common cause.
• Blocked capillary tube, electronic expansion valve or strainer.
• Dirty condenser or weak outdoor fan.
• Discharge sensor loose from its pipe or faulty, giving a wrong reading.
• Internal compressor wear raising discharge temperature, which is less common.

How to diagnose5

1. Switch off for a few minutes, clean the outdoor unit and restart.
2. The technician checks that the discharge sensor is firmly seated in its holder on the pipe.
3. The technician measures the sensor resistance against the manufacturer table at a known temperature.
4. The technician measures pressures and compares pipe temperatures to find a leak or restriction.
5. If charge and sensor are fine, the technician assesses the compressor and its current draw.

How to fix5

1. Clean the condenser and repair the outdoor fan if needed.
2. Reseat or replace the discharge sensor.
3. Have a licensed technician repair the leak and recharge by weight.
4. Replace a blocked electronic expansion valve or strainer.
5. Run the unit, monitor discharge temperature and confirm the code does not return.

Repair cost

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

Cost stays low for a sensor or cleaning and rises with leak repair or an expansion valve; a damaged compressor costs far more than this range.

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