Error codes for Panasonic air conditioners

Remote indication

Indication of LEDs (by numbers) on printed circuit boards

Type of error

Wired

IR

Int. block

Outdoor unit

Code

Explanation

led1

led2

led2

led3

led4

LED5

led6

led7

led8

F15

01

x

x

x

x

(2)

(2)

 the malfunction is due to the removal of the condensate from the indoor unit, the drainage bath is full

F16

01

x

x

x

x

(2)

(2)

malfunction of the stepper motor blinds, or they are not connected

F17

01

x

x

x

x

x

(2)

(2)

the problem of connecting options to additional contacts

F20

01

x

x

x

x

(2)

(2)

closed or torn room temperature sensor

02

x

x

x

x

x

(2)

(2)

the room temperature sensor in the remote control is closed or broken

F21

01

x

x

x

x

(2)

(2)

the evaporator temperature sensor is closed or broken, or freezing due to freon leakage

F25

01

x

x

x

(2)

(2)

improper addressing of indoor units under centralized management (address conflict)

F26

01

x

x

x

(2)

(2)

remote control wire break

02

x

x

x

(2)

(2)

incorrect data transfer (signal) between the remote control and the board

F27

01

x

x

x

x

interconnect cable break

02

x

x

x

x

incorrect data transfer between indoor and outdoor unit

F29

01

x

x

x

x

x

(2)

(2)

incorrect configuration of parameters (Dip switches) on the indoor unit board

02

x

x

x

x

x

(2)

(2)

same (see above)

12

x

x

x

x

x

x

(2)

(2)

incorrect setting of parameters (Dip-switches) on the remote control

F30

02

x

x

x

x

x

x

rephasing or phase failure

06

x

x

x

x

x

x

phase imbalance

07

x

x

x

x

x

x

x

power problem

F31

02

x

x

x

x

x

high condensing pressure

F33

01

x

x

x

x

x

increased current consumption by compressor

02

x

x

x

x

x

x

compressor discharge temperature protection (overheating, leakage or refueling)

F40

41

x

x

x

x

x

compressor discharge temperature sensor shorted or broken

61

x

x

x

x

x

malfunction of the temperature sensor of the heat exchanger of the outdoor unit (open or short circuit)

F41

02

x

x

x

x

x

x

high pressure sensor open / high pressure protection

03

x

x

x

x

x

x

high pressure switch in heat pump mode / high pressure protection in heat pump mode

F42

01

x

x

x

x

x

x

increased current consumption by the compressor, or the current sensor is faulty

F49

01

x

x

x

x

x

x

incorrect configuration of parameters (Dip switches) on the outdoor unit

Remote indication

Indication of green LEDs (by numbers) on the printed circuit board

Type of error

Wired

Outdoor unit

Code

Explanation

302

303

304

305

306

307

308

309

F15

-01

x

x

x

x

(2)

(2)

There is a problem with condensate drain from the indoor unit. Drain pan overflow. The float sensor is open for 3 minutes. CN-DRMTR / CN-TH2 Indoor Unit Board Connector

F16

-01

x

(2)

(2)

The blinds motor is not connected. Malfunctioning blinds

F17

-02

x

x

x

(2)

(2)

Indoor Unit DC Fan Motor (DC)

F20

-01

x

x

(2)

(2)

There is a problem with the room temperature sensor. CN-TH2 indoor unit circuit board connector (open circuit or short circuit)

-02

x

x

x

(2)

(2)

The problem with the temperature sensor on the remote control (open or short circuit)

F21

-01

x

x

x

(2)

(2)

There is a problem with the temperature sensor on the heat exchanger of the indoor unit (open circuit or short circuit) or a leak of freon from the system / freezing due to a leak of freon. CN-TH1 indoor unit circuit board connector (open circuit or short circuit)

F26

-01

x

x

x

(2)

(2)

Remote cable breakage. Incorrect data transfer (signal) between the remote control and the board. Transformer power supply control circuit.

F27

-01

x

x

x

x

(2)

(2)

Open interconnect cable (indoor unit side)

-05

x

x

x

x

x

(2)

(2)

Incorrect data transfer between the indoor and outdoor unit (side of the indoor unit)

F27

-01

x

x

x

Interconnect power cable breakage (outdoor unit side)

-05

x

Incorrect data transfer between indoor and outdoor unit (outdoor unit side)

F30

-01

The total cooling capacity of the indoor units or the number of indoor units is incorrect.

-02

Phase failure / phase imbalance / improper phasing (swap 2 adjacent phases out of three)

F31

-01

x

Suction pressure protection (lack of freon)

-02

x

High Pressure Shutdown

-06

x

x

Incorrect operation of the 4-way valve (mechanism, valve coil or problems in the refrigeration circuit)

-08

x

x

Freezing error (cold models)

-09

x

x

x

Freon leak error

-10

x

x

x

Refrigerant circuit error (freon leak or service valve closed)

F32

-03

x

x

Inverter protection (low constant voltage (DC) voltage)

-04

x

x

x

Inverter Protection (IPM Transistor Module or Main Board Failure)

-05

x

x

Compressor current protection (jamming of the compressor or phase failure). A significant "subsidence" of the supply voltage when starting or operating the air conditioner is a weak network.

-06

x

x

x

Compressor overheating (lack of freon or inefficient condenser heat exchanger)

-08

x

x

x

Inverter Protection (PFC Protection)

-09

x

x

DC inverter protection (IPM transistor module malfunction or compressor jamming)

-10

x

x

x

x

Compressor speed mismatch with board control signals (IPM transistor module malfunction or compressor jam)

F35

-02

x

x

Outdoor Unit DC Fan Motor (DC)

F40

-01

x

There is a problem with the outlet temperature sensor. CN-TH1 outdoor unit circuit board connector (open circuit or short circuit)

-11

x

There is a problem with the temperature sensor on the compressor suction line (SUC T. TEMP). Connector for outdoor unit CN-TH2 (open circuit or short circuit). Service valve closed.

-21

x

x

There is a problem with the temperature sensor at the outlet of the condenser heat exchanger (COND TEMP). CN-TH1 outdoor unit circuit board connector (open circuit or short circuit)

-31

x

x

x

There is a problem with the pipe temperature sensor (PIPE TEMP). CN-TH2 outdoor unit circuit board connector (open circuit or short circuit)

-51

x

x

Problem with compressor discharge temperature sensor (DIS T. TEMP). CN-DIS outdoor unit board connector (open circuit or short circuit)

F41

-02

x

x

x

High pressure sensor triggered. CN-PSW1 outdoor unit circuit board connector (open circuit)

-12

x

x

Low pressure sensor trip (open circuit)

F42

-11

Open in the current sensor circuit (malfunction of the electronic filter board (NOISE FILTER) of the outdoor unit or ASN2 connector). Abnormally low current consumption of air conditioning.

F44

-01

x

x

Inverter protection (overheating of the IPM transistor board, malfunction of the main board of the outdoor unit)

1) display the last stored error in the system’s memory - press and hold the CHESK button on the remote control for 5 seconds with the air conditioner turned on.

2) output of the current error (CHECK indication blinks) - press the corresponding button once.

3) display of an explanation of the error (-01, -02, -03, etc.) - if there is an indication of the error code (see clause 2), press the TIMER SELECT / SET button once

Attention! If there are several errors in the system at the same time, the malfunction code on the remote control may not coincide with the LEDs. The priority in this case is the remote control. LED1 (green) indicates that the microprocessor on the circuit board is operating normally. If the LED is off or flashing irregularly, check the power to the system, turn the system off and on again.

Explanation

(2) -

308

309

In the case of mounting a double or triple cartoon, the error corresponds to:

x

lead block

x

slave unit number 1

x

x

slave unit number 2