F4

Compressor Discharge Temperature Protection

Description

The compressor discharge (exhaust) temperature has exceeded the safe limit, so the unit shut down the compressor to prevent damage.

Appliance Error Codes Details

Error Code
F4
Error Name
Compressor Discharge Temperature Protection
Appliance Type
air_conditioner
Brand
Haier
Severity
high

Additional Troubleshooting

1. Turn off the unit and check that the outdoor unit has adequate airflow and is not blocked
2. Check the refrigerant charge is not low, which can cause overheating
3. Contact a service technician, as this often indicates a refrigerant leak or compressor issue

Was this helpful?

Loading...

Send Feedback

Found an error or have a suggestion? We respond within 48 hours.

Fact-checking completed

Verified by: Pavel Volkov
Created:
Information verified against official sources

Official Sources

Official Manufacturer Service Manuals

Service manuals and technical documentation from appliance manufacturers

Original equipment manufacturers official documentation

Industry Standards Organizations

International standards for electrical appliances and error codes

International Electrotechnical Commission standards

Visit

Learn More

Dive deeper with our comprehensive developer guides for Appliance Error Codes

Appliance Error Codes: Troubleshooting Guide

Fix your home appliances with our comprehensive troubleshooting guide. Learn to identify error codes...

Pavel Volkov Aug 30, 2025
View all guides

Related Codes

More codes of the same type

E9

Indoor Overload Protection (Heating Mode)

In heating mode, the indoor unit's coil temperature has risen too high, so the a...

View details →

F1

Indoor Ambient Sensor Error

The indoor ambient temperature sensor is faulty.

View details →

F2

Indoor Evaporator Sensor Error

The indoor unit's evaporator temperature sensor is faulty.

View details →

F3

Outdoor Module Communication Error

The outdoor unit's power module (IPM) is not communicating correctly with the ou...

View details →

01

Self-Clean Door Lock Fault

The oven did not sense the door lock or unlock switches within 60 seconds while...

View details →

02

Oven Over-Temperature Shutdown

The oven exceeded its safety limit (about 630F with the door unlocked or 950F lo...

View details →

03

Oven Sensor Open Circuit

The control board cannot read a valid resistance from the RTD oven temperature s...

View details →

10 3 00

Condenser Thermistor Open

The condenser thermistor circuit is open, preventing the control board from moni...

View details →
Back to Appliance Error Codes