Panasonic Air Conditioner Error Codes

Contents: 1. Split AC, 2. Multi AC, 3. Cassette AC Error Codes;

Panasonic Air Conditioner Error Codes
Panasonic Air Conditioner Error Codes

Panasonic Inverter Split AC Error Codes

Error CodesCause
S01Room temperature sensor failure
S02Indoor coil sensor failure
S03Humidity sensor failure
S04Comp. temperature sensor failure
S05Outdoor coil sensor failure
S06Outdoor air sensor failure
S07Outdoor current sensor failure
E01Indoor/outdoor communication failure
E02HIC circuit failure (Compressor/Fan circuit)
E03Outdoor unit OTP rom failure
E04Peak current cut off
E05PAM or Active circuit failure
E06High compressor discharge temperature
E07Indoor fan operating failure
E08Way valve switching failure (RV)
E09No refrigerant protection
E10DC compressor drive circuit failure
E11Outdoor fan operating failure
E12Error in outdoor unit
E13Freeze prevention activated

Note: “0″ – Frequency measured and fan speed fixed. The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep” sound heard following by pressing the “CHECK” button at Remote Control. Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is changed from one “beep” to four“beep” sounds.

Panasonic AC Remote Control
Panasonic AC Remote Control

To make a diagnosis

  1. Timer LED start to blink and the unit automatically stops the operation
  2. Press the CHECK button on the remote controller continuously for 5 seconds.
  3. “- -” will be displayed on the remote controller display. Note: Display only for “- -”. (No transmitting signal, no receiving sound and no Power LED blinking.)
  4. Press the “TIMER” + or – button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will be transmitted to the main unit.
  5. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main unit.
  6. When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED will light up for 0.5 seconds and no sound will be heard.
  7. The breakdown diagnosis mode will be canceled by pressing the CHECK button continuously for 5 seconds or without any operation the remote control for 30 seconds.
  8. The LED will be off if the unit is turned off or the AC button on the main unit is pressed.

To clear memorized error (Protective operation) status after repair:

1. Turn power on.

2. Press the AUTO button for 5 seconds (A beep receiving sound) on the main unit to operate the unit at Forced Cooling Operation mode.

3. Press the CHECK button on the remote controller for about 1 second with a pointed object to transmit signal to main unit. A beep sound is heard from main unit and the data is cleared.

Temporary Operation (Depending on breakdown status)

1. Press the AUTO button (A beep receiving sound) on the main unit to operate the unit. (Remote control will become possible.)

2. The unit can temporarily be used until repaired.

Panasonic Multi AC Error Codes

Panasonic Multi AC Error Codes
Panasonic Multi AC Error Codes
Error CodesProblem
H00No abnormality detected
H11Indoor-outdoor abnormal communication
H14Indoor intake air temperature sensor abnormality
H15Outdoor compressor temperature sensor abnormality
H16Outdoor Current Transformer open circuit
H19Indoor fan motor merchanism lock
H23Indoor heat exchanger temperature sensor abnormality
H24Indoor heat exchanger temperature sensor 2 abnormality
H27Outdoor air temperature sensor abnormality
H28Outdoor heat exchanger temperature sensor abnormality
H30Outdoor discharge air temperature sensor abnormality
H33Indoor/Outdoor wrong connection
H38Indoor/outdoor mismatch (brand code)
H97Outdoor fan motor mechanism locked
H98Indoor high pressure protection
H99Indoor heat exchanger anti-freezing protection
F11Cooling/Heating cycle changeover abnormality
F90PFC control
F91Refrigeration cycle abnormal
F93Outdoor compressor abnormal revolution
F95Cool high pressure protection
F96IPM (power transistor) overheating protection
F97Outdoor compressor overheating protection
F98Total running current protection
F99Outdoor Direct Current (DC) peak detection

Panasonic Cassette AC Error Codes

If the problem persists even after you check the foregoing items, stop the unit, disconnect the power to the indoor unit and contact the dealer where the product was purchased with the model number and problem you are having.

Panasonic Cassette AC Error Codes
Panasonic Cassette AC Error Codes
Error CodesProblem
E06Outdoor unit failed to receive serial communication signals from indoor unit
E07Outdoor unit sending failure to indoor unit
E12Automatic address setting start is prohibited while auto-address setting in progress.
E14Main unit duplication in simultaneous-operation multi control (detected outdoor unit)
E15Automatic address alarm (capacity too low)
E16Automatic address alarm (capacity too high)
E20No indoor units connected
F04Compressor discharge temperature sensor (TD) trouble
F06Inlet temperature sensor (C1) in heat exchanger trouble
F07Intermediate temperature (C2) in heat exchanger trouble
F08Outdoor air temperature sensor (TO) trouble
F12Compressor inlet suction temperature sensor (TS) trouble
F31Outdoor unit nonvolatile memory (EEPROM) trouble
H01Primary (input) overcurrent detected
H02PAM trouble
H03Primary current CT sensor (current sensor) failure
H05Sensor failure, Compressor discharge temperature sensor (TD) disconnected
H31HIC trouble
L04Outdoor unit address duplication
L10Outdoor unit capacity not set
L13Indoor unit type setting error
L184-way valve operation failure
P03Compressor discharge temperature trouble
P04High pressure trouble
P05AC power supply trouble
P13Alarm valve open
P14O2 sensor detect
P15Insufficient gas level detected
P16Compressor overcurrent trouble
P22Outdoor unit fan motor trouble
P29Lack of INV compressor wiring, INV compressor actuation failure (including locked) due to DCCT failure

Panasonic Air Conditioner Troubleshooting

Panasonic Air Conditioner Troubleshooting
Panasonic Air Conditioner Troubleshooting

The following symptoms do not indicate malfunction;

Mist emerges from indoor unit.Condensation effect due to cooling process
Water flowing sound during operation.Refrigerant flow inside the unit.
The room has a peculiar odourThis may be due to damp smell emitted by the wall, carpet, furniture or clothing
Indoor fan stops occasionally during automatic fan speed settingThis helps to remove the surrounding odour
Airflow continues even after operation has stoppedExtraction of remaining heat from the indoor unit (maximum 30 seconds)
Operation is delayed a few minutes after restartingThe delay is a protection to the unit’s compressor
Outdoor unit emits water/steamCondensation or evaporation occurs on pipes
POWER indicator blinks during HEAT mode with no warm air supply (and louver is closed)The unit is in defrost mode (and AIR SWING is set to AUTO)
Indoor fan stops occasionally during heating operationTo avoid unintended cooling effect
POWER indicator blinks before the unit is switched onThis is a preliminary step in preparation for the operation when the ON timer has been set
Cracking sound during operationChanges of temperature caused the expansion/contraction of the unit
POWER indicator blinks 3 seconds ON and 0.5 seconds OFF during operationCause: The unit is in Demand Response Mode. Check: the following before calling for servicing
Noisy during operationCheck: Check if the unit has been installed at an incline. Close the front panel properly.
Remote control does not workCheck: Insert the batteries correctly. Replace weak batteries.
The unit does not workCheck: Check if the circuit breaker is tripped. Check if timers have been set.
The unit does not receive the signal from the remote control.Check: Make sure the receiver is not obstructed. Certain fluorescent lights may interfere with signal transmitter. Please consult authorised dealer.

The unit stops and the TIMER indicator blinks;

E1-E20 Error Codes;



Panasonic AC Wiring Connection Diagram-Outdoor Unit
Wiring Connection Diagram-Outdoor Unit
Panasonic AC Wiring Connection Diagram-Indoor Unit
Wiring Connection Diagram-Indoor Unit
Panasonic AC Electronic Circuit Diagram-Outdoor Unit
Electronic Circuit Diagram-Outdoor Unit
Panasonic AC Electronic Circuit Diagram-Indoor Unit
Electronic Circuit Diagram-Indoor Unit

Panasonic VRF AC Error Codes and Troubleshooting

Panasonic AC Manual PDF

Panasonic Cassette Air Conditioner MANUAL PDF


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