Fujitsu Air Conditioner Error Codes

Fujitsu Air Conditioner Error Codes

Red diode (number of flashes)

Green diode (number of flashes)

No communication between indoor and outdoor modules

-

2

Failure to connect the wiring to the outdoor fan

-

3

Temperature sensor not connected

-

4

Disrupted power

-

5

No connection between indoor unit and remote control

-

8

Short circuit on the external temperature sensor

2

2

Short circuit on the humidity sensor inside the device

5

3

Mains resistance in the sensor area

3

2

No condensate drain, clogged tube

3

3

The temperature sensor function is impaired (moisture, dust or dirt has entered)

3

4

The compressor is disabled by the sensor due to a threshold temperature. Check current supply

3

8

Short circuit wiring, air conditioning turned off automatically

4

2

The function of the main relay is broken

4

3

Disrupted electrical current. In case of such an error, the Fujitsu air conditioner should remove the batteries from the remote control, turn off the power to the indoor and outdoor units, leave it for at least five minutes and try to turn it on.

4

4

Overvoltage protection turned on

4

7

No mains power, possibly a power outlet

4

8

Low voltage in the mains

5

2

Low voltage in the mains

5

3

Automatic compressor shutdown in case of overheating

5

5

No power to the outdoor fan

5

6

Fan short circuit

6

2

The indoor fan rotates slowly. Possible reason: lack of lubrication, broken motor bearing, motor itself is broken, fan is clogged

6

3

Refrigerant shortage causing an increase in discharge temperature

7

2

Extremely high refrigerant pressure, unit overheated. With such an error, the Fujitsu air conditioner should check the copper tubes, they may be kinked

7

3

Pressure sensor broken

7

5

Air conditioner filters clogged

8

2

Not clogged filters for the first time

8

3

Damage to the reversing valve of the air conditioner. Clean or change to a new one

8

4

Fujitsu Air Conditioner Error Codes

Decoding of the error code of the Fujitsu air conditioner

00

There is no connection between the remote control and the outdoor unit

01

There is no communication between the indoor unit and the outdoor unit

02

The temperature sensor inside the room is broken

03

Short circuit of the temperature sensor inside the room

04

The function of the temperature sensor of the external heat exchanger is impaired

05

Short circuit on the temperature sensor of the internal heat exchanger

06

Heat exchanger temperature sensor malfunction

08

Disrupted power

09

Float switch works

0A

Outside temperature sensor failure

0b

Short circuit outdoor temperature sensor

0c

Fujitsu temperature sensor tube open

0d

Short circuit in the temperature sensor tube

0E

High pressure opening failure

0F

Crash in temperature tube

11

Error in the air conditioner

12

Indoor Fan Malfunction

13

There is no signal from the air conditioner

14

No signal from room sensor