E3

Low Pressure Protection

Description

The system has shut down due to excessively low pressure, often indicating a refrigerant leak.

Appliance Error Codes Details

Error Code
E3
Error Name
Low Pressure Protection
Appliance Type
air_conditioner
Brand
Carrier
Severity
high

Additional Troubleshooting

1. Do not run the unit
2. Contact service immediately to check for leaks and recharge refrigerant

Was this helpful?

Loading...

Send Feedback

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

About this page

Author: Pavel Volkov
Created:

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

B1

Room Temperature Error

The room temperature sensor is malfunctioning.

View details →

dn

EXV Communication Error

Communication between the main control board and the electronic expansion valve...

View details →

E1

High Pressure Protection

The system has shut down due to excessively high pressure.

View details →

E2

Indoor Anti-Freezing Protection

The indoor unit coil temperature is too low, risking ice formation.

View details →

E4

Compressor Discharge High Temp Protection

The compressor is overheating, indicating a serious issue.

View details →

E6

Indoor/Outdoor Communication Error

The outdoor unit has lost communication with the indoor unit, which can be cause...

View details →

E7

Mode Conflict

In a multi-zone system, one indoor unit is set to cool while another connected t...

View details →

E8

System Overload Protection

The system has detected an excessive electrical or thermal load and shut down to...

View details →
Back to Appliance Error Codes