E7

Mode Conflict

Description

In a multi-zone system, one indoor unit is set to cool while another connected to the same outdoor unit is set to heat, which the system cannot run at the same time.

Appliance Error Codes Details

Error Code
E7
Error Name
Mode Conflict
Appliance Type
air_conditioner
Brand
Carrier
Severity
low

Additional Troubleshooting

1. Set all indoor units connected to the same outdoor unit to the same operating mode
2. Check the master zone or wired controller settings
3. Contact service if the conflict is reported despite matching modes

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:
Last updated:
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

E66

Heating Relay Error

The state of the heating-element relay does not match the signal expected by the...

View details →

E67

Pressure Sensor Error

The pressure sensor is malfunctioning.

View details →

E68

Stuck Keypad Button

A button on the control panel is stuck or continuously pressed.

View details →

E68

Water Level Error

The water level cannot be detected properly.

View details →

E70

Power Supply Error

The washer is not receiving proper power supply.

View details →

E70

NTC Temperature Sensor Problem

The E70 range indicates a fault with the NTC water-temperature sensor: it reads...

View details →

E703

Door Contact Fault

The door contact switch does not confirm that the door is closed, so the oven wi...

View details →

E71

Temperature Sensor Error

The air temperature sensor (NTC) of the dryer is reporting values outside the va...

View details →
Back to Appliance Error Codes