Samsung split air conditioner C series error codes

Problem

Communication Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check indoor-outdoor communication wire, terminals, and ensure outdoor unit printed circuit board power ON.

Problem

Set Address Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Reset indoor/outdoor address and check DIP switch setting.

Problem

Indoor Room Temperature Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check room sensor wiring, measure resistance, replace sensor if faulty.

Problem

Indoor Coil Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check indoor coil sensor connection or replace sensor.

Problem

Indoor Coil Sensor Middle Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check middle coil sensor wiring/resistance
• replace if faulty.

Problem

Indoor Dust Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check dust sensor connector and clean/replace sensor.

Problem

Indoor Humidity Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check humidity sensor wiring and connector.
• Replace sensor.

Problem

Indoor Motion Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check motion sensor module connection and replace if needed.

Problem

brushless DC Fan Motor Lock Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check fan motor winding, capacitor, and printed circuit board connection.

Problem

Indoor EEPROM Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check EEPROM IC on indoor printed circuit board.
• Replace printed circuit board if faulty.

Problem

Outdoor compressor current overload

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check compressor winding, capacitor, and power supply voltage.

Problem

Outdoor DC Peak Current Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check compressor connections and outdoor printed circuit board.

Problem

Outdoor Discharge Temp Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check discharge sensor and wiring to outdoor printed circuit board.

Problem

Outdoor Coil Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check outdoor coil sensor connection and resistance.

Problem

Outdoor Ambient Sensor Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check ambient temperature sensor and wiring.

Problem

Outdoor EEPROM Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check EEPROM on outdoor printed circuit board.
• Replace printed circuit board if needed.

Problem

High Pressure Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check gas pressure, condenser cleanliness, and fan operation.

Problem

Low Pressure Error

Causes

The control system is reporting this fault. Use the checks below to narrow down wiring, sensors, supply, or mechanical issues.

Fix

• Check gas level, evaporator, and expansion valve.