| Air conditioner type |
Error code |
Code interpretation |
| Daikin |
A1 |
Malfunction of indoor unit PCB Malfunction due to noise Defect of indoor unit PCB. |
| Malfunction of the printed circuit board of the indoor unit due to a noise defect in the printed circuit board of the indoor unit. |
| A3 |
Malfunction of drain level control system Drain piping clogging, improper drain piping work Defect of drain pump. Defect of float switch. |
| Malfunction in the drain level control system. Clogged drain pipes, incorrect operation of the drain pipes. Defect in the drain pump. Defective float switch. |
| A4 |
Malfunction of freezing protection Shortage of water volume Low water temperature setting Defect of 26WL. Defect of water temperature thermistor. |
| Freeze protection malfunction Low water volume Low water temperature setting Defective 26WL. Defective water temperature thermistor. |
| A5 |
High pressure control in heating, freeze-up protection control in cooling Clogged air filter of indoor unit and short-circuit Defect of indoor unit heat exchanger thermistor. |
| High pressure control in heating, freeze protection control in cooling. Clogged air filter of indoor unit and short circuit Defect of heat exchanger thermistor of indoor unit. |
| A6 |
Fan motor locked, overload, overcurrent Defect of connector contact Defect of indoor unit PCB Defect of fan motor. |
| Fan motor blocked, overload, overcurrent Defective connector contact Defective printed circuit board of the indoor unit Defective fan motor. |
| A7 |
Malfunction of swing flap motor Failure of swing flap motor, Defect of indoor unit PCB Jammed swing mechanism/blade. |
| Swing flap motor failure Swing flap motor failure, defect in the internal unit PCB swing mechanism/blade. |
| A8 |
Malfunction of power supply Overcurrent of AC input, Defect of power supply voltage. |
| AC input overcurrent fault, power supply voltage fault. |
| A9 |
Malfunction of electronic expansion valve drive Defect of electronic expansion valve coil, Defect of indoor unit PCB, Defect of connector contact. |
| Malfunction of the electronic expansion valve motor Defective coil of the electronic expansion valve, defect in the printed circuit board of the indoor unit, defect in the connector connection. |
| AA |
Heater overheat 26WH is activated. |
| The 26WH overheater is activated. |
| AF |
Malfunction of a humidifier system Water leakage of humidifier (option), Failure of swing float switch. Improper drain piping incline. |
| Humidifier system malfunction Water leaking from humidifier (optional), rocker float switch failure. Improper slope of drainage pipes |
| A.H |
Malfunction of dust collector of air cleaner Defect of dust collecting element Defect of high voltage power supply unit Stained insulator part Defect of indoor unit PCB. |
| Defect in the air cleaner dust collector Defect in the dust collection element Defect in the high voltage power supply unit Stained insulating part Defect in the indoor unit PCB. |
| AJ |
Malfunction of capacity setting (Indoor unit PCB) Capacity setting adapter is not installed when replacing PCB Defect of indoor unit PCB. |
| Capacitance setting fault (indoor unit printed circuit board) The capacitance setting adapter is not installed when replacing the printed circuit board defect in the indoor unit printed circuit board. |
| C1 |
Failure of transmission (between indoor unit PCB and fan PCB) Defect of transmission of fan motor control driver.
|
| Transmission failure (between indoor unit PCB and fan PCB) Defect in fan motor control driver transmission. |
| C4 |
Malfunction of liquid pipe thermistor for heat exchanger Defect of connector contact. Defect of liquid pipe thermistor for heat exchanger. |
| Malfunction of the thermistor of the liquid tube of the heat exchanger Defect in the connector connection. Defective fluid pipe of the heat exchanger. |
| C5 |
Malfunction of gas pipe thermistor for heat exchanger Defect of connector contact. Defect of gas pipe thermistor for heat exchanger. |
| Malfunction of the thermistor of the gas tube of the heat exchanger Defect in the connector connection. Defective gas tube thermistor of the heat exchanger. |
| C6 |
Malfunction of fan motor control driver Defect of fan motor sensor system Defect of fan motor control driver. |
| Fan motor control driver defective Fan motor sensor system defective Fan motor control driver defective. |
| C7 |
Front panel driving motor fault Defect of front panel driving motor Defect of limit switch. |
| Front panel drive malfunction Front panel drive motor defective Limit switch defective. |
| C9 |
Malfunction of air suction thermistor Defect of connector contact Defect of thermistor for air suction. |
| Defect in the thermistor of the suction air Defect in the contact of the connector Defect in the thermistor of the suction air. |
| CA |
Malfunction of discharge air thermistor Defect of connector contact. Defect of thermistor for air discharge. |
| Air discharge thermistor malfunction Defect in connector connection. Defective air discharge thermistor. |
| CC |
Malfunction of humidity sensor system Defect of connector contact Defect of humidity sensor. |
| Defect in the humidity sensing system Defect in the connector contact Defect in the humidity sensor. |
| Midea |
E0 |
EEPROM parameter error |
| EEPROM parameter error |
| E1 |
Indoor / outdoor units communication protection |
| Protect indoor/outdoor unit connections |
| E2 |
Zero-crossing signal error |
| Zero crossing signal error |
| E3 |
Fan speed out of control |
| Fan speed is out of control |
| E5 |
Open or short circuit of outdoor temperature sensor |
| Open or short circuit of the external temperature sensor |
| E6 |
Open or short circuit of room or evaporator temperature sensor |
| Opening or short circuit of the room or evaporator temperature sensor |
| P0 |
IGBT over-strong current protection |
| Over-current protection in IGBT |
| P1 |
Over voltage or too under voltage protection |
| Over voltage or under voltage protection |
| P2 |
Temperature protection of compressor top. |
| Temperature protection of the upper part of the compressor. |
| P4 |
Inverter compressor drive error |
| Inverter compressor motor fault |
| YORK |
E0 |
Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error |
| Internal Error EEPROM (Electrically Erasable Programmable Read Only Memory) |
| E1 |
Indoor and outdoor unit communication malfunction |
| Malfunction in the connection of the internal and external unit |
| E3 |
Indoor fan speed malfunction |
| Internal fan speed malfunction |
| E4 |
Indoor room temperature sensor error |
| Error in internal room temperature sensor |
| E5 |
Evaporator coil temperature sensor error |
| Evaporator coil temperature sensor error |
| EC |
Refrigerant leak detection system malfunction |
| Malfunction in the refrigerant gas leak detection system |
| EE |
Water level alarm malfunction |
| Water level alarm malfunction |
| E8 |
Dual indoor unit (twin model only) communication malfunction |
| Duplex indoor unit (dual model only) Communication failure |
| E9 |
Other twin model malfunction |
| Malfunction of the other twin model |
| E0 |
Overload protection |
| Overload protection |
| F1 |
Outdoor temperature sensor error |
| Error in external temperature sensor |
| F2 |
Outdoor condenser pipe sensor error |
| Outdoor condenser tube sensor error |
| F3 |
Discharge air temperature sensor error
|
| Air temperature sensor error discharge |
| F4 |
Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error |
| Error in external EEPROM (electrically erasable programmable read-only memory) |
| F5 |
Outdoor fan speed (DC fan motor only) malfunction |
| Outdoor fan speed malfunction (DC fan motor only) |
| F6 |
T2b sensor error |
| T2b sensor error |
| F7 |
Auto-lifting panel communication error |
| Automatic lifting plate connection error |
| F8 |
Auto-lifting panel malfunction |
| Automatic lifting plate malfunction |
| F9 |
Auto-lifting panel is open |
| The automatic lifting panel is open |
| P0 |
Inverter module IPM protection |
| IPM protection for inverter module |
| P1 |
High/Low voltage protection |
| High/low voltage protection |
| P2 |
Compressor top overheating protection |
| Higher compressor overheating protection |
| P3 |
Outdoor low temperature protection |
| Outdoor low temperature protection |
| P4 |
Compressor drive error |
| Compressor motor fault |
| P5 |
Mode conflict |
| Conflict situation |
| P6 |
Compressor low-pressure protection |
| Low pressure protection for compressor |
| P7 |
Outdoor IGBT sensor error |
| Outdoor IGBT sensor error |
| AUX |
E1 |
Plastic temp sensor is abnormal.
|
| The plastic temperature sensor is abnormal. |
| E2 |
Copper temp sensor is abnormal (outdoor) |
| Abnormal copper temperature sensor (external) |
| E3 |
Copper temp sensor is abnormal (indoor) |
| Abnormal copper temperature sensor (internal) |
| E4 |
PG motor feedback is abnormal |
| Abnormal PG motor reactions |
| E5 |
Abnormality of outdoor unit |
| Defect in the external unit |
| E6 |
Over-current oprotection |
| Over-current protection |
| E7 |
External feedback failure |
| Failure of external feedback |
| E8 |
Overheat protection |
| Overheat protection |
| E9 |
Water pump failure |
| Water pump failure |
| dF |
Indicates "dF"or defrosting indicator displays |
| Indicates that the “dF” or defrost indicator appears |
| L1 |
Failure of coiled pipe sensor |
| Coiled tube sensor failure |
| L2 |
Failure of room temperature sensor |
| Room temperature sensor failure |
| L6 |
Without feedback of internal fan motor |
| No internal fan motor feedback |
| BEKO |
H1 |
Means defrosting status. It's the normal phenomenon. |
| Means defrosting condition. It is a natural phenomenon. |
| E5 |
It can be eliminated after restarting the unit. If not, please contact qualified professionals for service. |
| It can be removed after restarting the unit. If not, please contact qualified professionals for service. |
| U8 |
It can be eliminated after restarting the unit. If not, please contact qualified professionals for service. |
| It can be removed after restarting the unit. If not, please contact qualified professionals for service. |
| H6 |
It can be eliminated after restarting the unit. If not, please contact qualified professionals for service. |
| It can be removed after restarting the unit. If not, please contact qualified professionals for service. |
| C5 |
Please contact qualified professionals for service. |
| Please contact qualified professionals for service. |
| F1 |
Please contact qualified professionals for service. |
| Please contact qualified professionals for service. |
| F2 |
Please contact qualified professionals for service. |
| Please contact qualified professionals for service. |
| Carrier |
E0 |
Indoor unit EEPROM parameter error |
| EEPROM indoor unit parameter error |
| E1 |
Indoor/outdoor units communication error |
| Error in connection of indoor/outdoor units |
| E3 |
Indoor fan speed has been out of control |
| The indoor fan speed is out of control |
| E4 |
Indoor room temperature sensor T1 open circuit or short circuit |
| Indoor room temperature sensor T1 open circuit or short circuit |
| E5 |
Evaporator coil temperature sensor T2 open circuit or short circuit |
| Evaporator coil temperature sensor T2 is open circuit or short circuit |
| EC |
Refrigerant Leakage Detection |
| Refrigerant leak detection |
| F1 |
Outdoor ambient temperature sensor T4 open circuit or short circuit |
| Outdoor ambient temperature sensor T4 open circuit or short circuit |
| F2 |
Condenser coil temperature sensor T3 open circuit or short circuit |
| Condenser coil temperature sensor T3 is open circuit or short circuit |
| F3 |
Compressor discharge temperature sensor T5 open circuit or short circuit |
| Compressor discharge temperature sensor T5 open circuit or short circuit |
| F4 |
Outdoor unit EEPROM parameter error |
| Outdoor unit parameter error EEPROM |
| F5 |
Outdoor fan speed has been out of control |
| The outdoor fan speed is out of control |
| P0 |
IPM malfunction or IGBT over-strong current protection |
| IPM fault or over-current protection in IGBT |
| P1 |
Over voltage or over low voltage protection |
| Overvoltage or undervoltage protection |
| P2 |
High temperature protection of compressor top diagnosis and solution |
| High temperature protection for diagnostics and compressor top solution |
| P4 |
Inverter compressor drive error |
| Inverter compressor motor fault |
| P5 |
Mode conflict |
| Conflict situation |
| P6 |
Compressor voltage protection |
|
Compressor voltage protection |
| Chigo |
E1 |
Condenser temperature aensor fault |
| Condenser temperature sensor error |
| E2 |
Room temp. sensor fault |
| Room temperature. Sensor error |
| E3 |
Coil temp. sensor fault |
| coil temperature. Sensor error |
| E4 |
Outdoor unit abnormal |
| The outdoor unit is abnormal |
| E5 |
No feedback signal of indoor fan |
| There is no feedback signal for the internal fan |
| E6 |
No over zero signal |
| No signal is more than zero |
| E7 |
Outdoor feedback fault |
| Outdoor feedback error |
| E8 |
Frost protection/over heat protection |
| Frost protection/overheat protection |
| F1 |
Communication fault |
| connection error |
| F2 |
Ambient temp. sensor fault |
| Ambient temperature. Sensor error |
| F3 |
Coil pipe temp. sensor of indoor unit fault |
| Coil pipe temperature. Indoor unit error sensor |
| F4 |
Fan motor of indoor |
| Indoor fan motor |
| F5 |
Module of outdoor unit fault |
| Outdoor unit error module |
| F6 |
Ambient temp. sensor of outdoor fault |
| Ambient temperature. Outdoor fault sensor |
| F7 |
Coil pipe temp. sensor of outdoor unit fault |
| Coil pipe temperature. Outdoor unit error sensor |
| F8 |
Suction temp. sensor of compressor fault |
| Suction temperature. Compressor fault sensor |
| F9 |
Discharge temp. sensor of compressor fault |
| Discharge temperature. Compressor fault sensor |
| F.A |
Inductor of current or voltage fault |
| Inductor current or voltage error |
| FC |
Compressor drive fault |
| Compressor motor fault |
| FD |
Phase lacking or phase sequence fault |
| Phase missing or error in phase sequence |
| FE |
Gas return sensor fault |
| Gas return sensor error |
| FF |
Other fault |
| Another mistake |
| P1 |
Temp. of evaporator protection |
| Temperature. To protect the evaporator |
| P2 |
Overheat, over current protection of inverter module |
| High temperature, over current protection for inverter module |
| P3 |
Over current protection |
| Over current protection |
| P4 |
Discharge temp. of compressor protection |
| Discharge temperature. From compressor protection |
| P5 |
Over heat of compressor top protection |
| Overheating of compressor overhead protection |
| P6 |
Suction temp. of compressor protection |
| Suction temperature. From compressor protection |
| P7 |
Low or high voltage protection |
| Low or high voltage protection |
| P8 |
Low presser of gas return protection |
| Low presser to protect gas return |
| P9 |
High pressure of discharge protection |
| High pressure discharge protection |
| PA |
High temp. of condenser protection |
| high temperature. From condenser protection |
| PC |
High temp. of outdoor ambient protection |
| high temperature. Protect the external environment |
| PF |
Other protection |
| Other protection |
| DF |
Defrost indication |
|
Defrost indicator |
| Delonghi |
LE |
Low Temperature (frost prevention). The appliance is fitted with a frost protection device to avoid excessive formation of ice. The appliance starts up again automatically when the defrosting process is completed. |
| Low temperature (frost prevention). The device is equipped with a frost protection device to avoid excessive ice formation. The machine starts working again automatically when the defrosting process is complete. |
| H.L |
High Level (internal tray full). Empty the internal safety tray following the instructions in the section “End of season operations”. If it reoccurs in cooling mode, contact your local authorized customer services. In heating mode: empty the internal tray. |
| High level (inner drawer is full). Empty the internal safety drawer following the instructions in the “End of Season Operations” section. If it reoccurs in cooling mode, contact your local authorized customer services. In heating mode: Empty the inner tray. |
| CF |
Change filter. When this message is displayed, the water filter needs replacing as described in the section: “Replacing the limescale filter”. |
| Change filter. When this message is displayed, the water filter must be replaced as described in the section: “Replacing the Limescale Filter”. |
| PF |
Probe Failure (sensor damaged). If this is displayed, contact your local authorized service centre. |
| Probe failure (sensor damage). If this is displayed, contact your local authorized service centre. |
| F1 |
Failure 1. This message could appear if the water filter is particularly clogged. See section: “Replacing the limescale filter”. If the filter has been replaced recently, contact your local authorized service centre. |
| Failure 1. This message may appear if the water filter is particularly clogged. See section: “Replacing the limescale filter”. If the filter has recently been replaced, contact your local authorized service center. |
| Lo |
Low Temperature - Room temperature is too low. |
| Low temperature - The room temperature is too low. |
| H1 |
High Temperature - Room temperature is too high. |
| High temperature - The room temperature is too high. |
| E1 |
Probe Failure (Sensor Damaged). |
| Probe failure (sensor damaged). |
| Fujitsu |
E0:00 |
Coms error - indoor to remote |
| Error comes - internal to remote |
| E1:00 |
Coms error - indoor to outdoor |
| Error comes - internal to external |
| E2:00 |
Return air thermistor open circuit |
| Air return thermistor open circuit |
| E3:00 |
Return air thermistor short circuit |
| Return short circuit thermistor |
| E4:00 |
Indoor coil thermistor open |
| The internal coil thermistor is open |
| E5:00 |
Indoor coil thermistor shorted |
| Internal thermistor shortened coil |
| E6:00 |
Outdoor coil thermistor open |
| Open the thermistor outdoors |
| E7:00 |
Outdoor coil thermistor shorted |
| Shortened outdoor thermistor coil |
| EA:00 |
Outdoor ambient thermistor open |
| Open the outer circumference thermistor |
| Eb:00 |
Outdoor ambient thermistor shorted |
| Shorted the thermistor to the external surroundings |
| Ec:00 |
Discharge pipe theistor open |
| The resistive discharge tube is open |
| Ed:00 |
Discharge pipe thermistor shorted |
| Drain tube thermistor shorted |
| EE:00 |
High pressure problem |
| High pressure problem |
| EF:00 |
Discharge pipe temp. Problem - too high = short of gas |
| Discharge pipe temperature. Problem - too high = lack of gas |
| O.O |
ID to RC Comms Fail |
| Identifier for RC communications failed |
| O1 |
ID to OD Comms Fail |
| ID to OD Comms Fail |
| O2 |
ID Air Sensor Open |
| Open the ID air sensor |
| O3 |
ID Air Sensor Close |
| Air sensor ID is close |
| O4 |
ID Pipe Sensor Open |
| The sensor tube ID is open |
| O5 |
ID Pipe Sensor Close |
| Close sensor tube ID |
| O6 |
OD Pipe Sensor Failure |
| OD tube sensor failure |
| O8 |
Power Source Connection Failure |
| Power supply connection failure |
| O9 |
Drain Problem Float switch operated |
| Drain problem float switch has been triggered |
| OA |
OD Air Sensor Failure |
| OD air sensor failure |
| O.C |
Discharge sensor failure |
| Vacuum sensor failure |
| OE |
Outdoor High Pressure Heatsink error |
| Error in outdoor high-pressure refrigeration chamber |
| 11 |
OD PCB Failure |
| OD PCB failure |
| 12 |
ID Fan Fail |
| Fan ID failed |
| 13 |
OD Signal Abnormal ID signal error |
| Error signal ID signal OD abnormal |
| 14 |
OD EEPROM Failure |
| OD EEPROM failed |
| 15 |
Compressor Temp Failure |
| Compressor temperature failure |
| 16 |
Pressure Switch Error |
| Pressure switch error |
| 17 |
IPM Error |
| IPM error |
| 18 |
CT Error |
| CT error |
| 19 |
Active Filter Module Error |
| Error in the active filter unit |
| 1A |
Compressor Failure |
| Compressor failure |
| 1B |
OD Fan Failure |
| OD fan failure |
| 1C |
Inverter to PCB Comms Fail |
| Inverter to PCB Comms failed |
| 1D |
2 Way Valve sensor Failure |
| 2 way LED sensor failure |
| 1E |
Expansion Valve Error |
| Expansion valve error |
| 1F |
Connection ID Unit Error |
| Error in connection ID module |
| 20 |
Indoor manual switch abnormal |
| Internal manual switch is abnormal |
| 24 |
Excessive high pressure protection on cooling |
| Protection against excessively high cooling pressure |
| 25 |
PFC circuit error |
| PFC circuit fault |
| 26 |
Indoor signal error |
| Internal signal error |
| 27 |
Indoor signal error |
| Internal signal error |
| 28 |
Indoor heat exchanger temperature error |
| Internal heat exchanger temperature error |
| 29 |
Outdoor heat exchanger temperature (middle) error |
| External heat exchanger temperature error (middle) |
| 2A |
Power supply frequency detection error |
| Error detecting power supply frequency |
| 2B |
Compressor temperature error |
| Compressor temperature error |
| 2C |
Four-way valve abnormal |
|
Four-way valve abnormal |
| General |
01 |
Indoor unit does not accept signal from outdoor unit |
| The indoor unit does not accept a signal from the outdoor unit |
| 02 |
Room temperature sensor open |
| The room temperature sensor is open |
| 03 |
Room temperature sensor short-circuited |
| Room temperature sensor short circuited |
| 04 |
Indoor heat exchanger temperature sensor open |
| The internal heat exchanger temperature sensor is open |
| 05 |
Indoor heat exchanger temperature sensor short circuited |
| Internal heat exchanger temperature sensor short circuit |
| 06 |
Outdoor heat exchanger temperature sensor |
| Outdoor heat exchanger temperature sensor |
| 08 |
Power source connection error |
| Error connecting the power supply |
| 09 |
Float switch operated |
| Float switch works |
| 0A |
Outdoor temperature sensor error |
| Error in external temperature sensor |
| 0c |
Discharge pipe temperature sensor |
| Discharge pipe temperature sensor |
| 11 |
Model abnormal/Indoor EPROM Abnormal |
| Abnormal model/internal EPROM abnormal |
| 12 |
Indoor fan abnormal |
| Abnormal internal fan |
| 13 |
Outdoor unit does not accept the signal from indoor unit |
| The outdoor unit does not accept the signal from the indoor unit |
| 14 |
Excessive outdoor pressure (permanent stop) |
| Excessive external pressure (permanent stop) |
| 15 |
Compressor temperature sensor |
| Compressor temperature sensor |
| 16 |
Pressure switch error |
| Pressure switch error |
| 17 |
IPM error |
| IPM error |
| 18 |
CT error |
| CT error |
| 19 |
Active filter module (AFM) error |
| Active Filter Module (AFM) fault |
| 1A |
Compressor does not operate |
| The compressor is not working |
| 1b |
Outdoor unit fan error |
| Outdoor unit fan error |
| 1c |
Communication error (inverter to multi controller) |
| Communication error (inverter to multi controller) |
| 1d |
2 way valve sensor error |
| 2 way sensor fault sensor |
| 1E |
Expansion valve error |
| Expansion valve error |
| 1F |
Connection indoor unit error |
|
Error connecting indoor unit |
| GE |
E0 |
On 70 Pint models only - when water is not pumped out while the unit is running under the Pump mode, E0 and the pump light will flash on the display. |
| E1 |
Electronic control board function error. Unplug the window air conditioner for 1 minute and then plug it back in to reset the electronic control board. If the code doesn't clear, unplug the window air conditioner and check the wire harness connections on the electronic control board. Check the electronic control board for visible damage such as a burn mark. Replace the electronic control board if it's damaged or defective. |
| E4 |
Water bucket is full or defective bucket float switch. If the collection bucket is full, empty the bucket. If the bucket is not full, unplug the air conditioner and check the wire harness connections on the electronic control board. Check for a pinched or damaged wire in the wire harness between the electronic control board and the collection bucket float switch. Check the float switch for damage. If the float switch is defective, replace it. |
| 88 |
When power is connected to the unit, “88” will be displayed, this is normal. If a fault or error code appears on the display of the dehumidifier, disconnect power to the unit for 30 seconds. If the fault code reappears, review the Troubleshooting Tips in your Owner's Manual. |
| Gree |
E1 |
Refrigerant system high pressure protection |
| E2 |
Anti-freezing protection |
| E4 |
Compressor exhaust high temperature protection |
| E5 |
AC over-current protection |
| E6 |
Communication failure between indoor unit and outdoor unit |
| E8 |
Anti-high temperature protection |
| H6 |
No feedback of indoor fan motor |
| C5 |
Jumper cap malfunction protection |
| F0 |
Refrigerant Leakage Protection |
| F1 |
Indoor ambient sensor open or short circuit |
| F2 |
Indoor tube sensor open or short circuit |
| F3 |
Outdoor ambient sensor open or short circuit |
| F4 |
Outdoor tube sensor open or short circuit |
| F5 |
Exhaust sensor open or short circuit |
| F6 |
Over load limit / drop frequency |
| F8 |
Over current limit / drop frequency |
| F9 |
High exhaust temperature limit / drop frequency |
| P.H |
Over voltage protection for PN |
| U5 |
AC current detect circuit malfunction |
| U4 |
Compressor reverse protection |
| P5 |
Over compressor phase current protection |
| b5 |
Inlet tube sensor malfunction |
| L3 |
Outdoor DC fan motor malfunction |
| b7 |
Outlet tube sensor malfunction |
| FC |
Door malfunction |
| FE |
Compressor overload sensor malfunction |
| H1 |
Defrosting |
| H2 |
Static clearing dust protection |
| H3 |
Compressor over load protection |
| H4 |
System abnormal protection |
| H5 |
IPM protection |
| HC |
PFC protection |
| H7 |
Compressor loss step protection |
| H0 |
Heating anti-high temperature drop frequency |
| Lc |
Startup failed |
| U2 |
Compressor protection against loss of phase |
| U1 |
Compressor phase current detection circuit malfunction |
| HE |
Compressor demagnetization protection |
| EE |
Loading EEPROM malfunction |
| P6 |
Communication failure between main board and driver board |
| PU |
Capacitor charge malfunction |
| P7 |
IPM sensor circuit malfunction |
| P8 |
IPM high temperature protection |
| U3 |
PN voltage drop protection |
| P.L |
Low PN voltage protection |
| PC |
Current detect circuit malfunction or current sensor malfunction |
| Ld |
Compressor loss of phase protection |
| LE |
Compressor locked rotary protection |
| EU |
IPM over temperature limit / drop frequency |
| U7 |
4-way valve reversal abnormal |
| U8 |
Disconnection of the exhaust temperature sensor |
| U9 |
AC power zero voltage detect error |
| F.A |
Over tube temperature drop frequency |
| FH |
Anti-freezing limit / drop frequency |
| oE |
PFC module temperature protection/PFC module sensor malfunction |
| Haier
|
E1 |
Indoor room temperature sensor failure |
| E2 |
Indoor coil temperature sensor failure |
| E4 |
EEPROM wrong |
| E7 |
Communication failure between indoor and outdoor |
| E14 |
Indoor fan motor failure |
| E18 |
Temperature cutoff protection |
| F1 |
Module failure |
| F2 |
Outdoor DC motor failure |
| F4 |
Compressor overheat/discharging temperature protection |
| F5 |
Module over current / current transducer failure |
| F6 |
Outdoor ambient temp. sensor abnormal |
| F7 |
Outdoor suction/defrosting temp. sensor abnormal |
| F8 |
High pressure abnormal |
| F9 |
Low pressure abnormal |
| F10 |
No AC power supply |
| F11 |
Outdoor PCB EEPROM abnormal |
| F13 |
Communication failure between outdoor PCB and module |
| F14 |
Compressor discharging temp. sensor failure |
| F15 |
Compressor running faulty |
| F16 |
Running state-detecting circuit failure |
| Hisense
|
00 |
No trouble |
| 01 |
Outdoor coil temperature sensor in trouble |
| 02 |
Compressor temperature sensor in trouble |
| 03 |
Voltage transformer in trouble |
| 04 |
Current transformer in trouble |
| 05 |
IPM module protection |
| 06 |
Over and under voltage control |
| 07 |
Communication problem |
| 08 |
Current overload control |
| 09 |
Maximum current control |
| 10 |
Communication trouble (between outdoor unit and driver unit) |
| 11 |
Outdoor EEPROM in trouble |
| 13 |
Compressor exhaust temperature too high control |
| 14 |
Outdoor ambient temperature sensor in trouble |
| 15 |
Compressor housing temperature control |
| 16 |
Anti-freeze or overload control |
| 18 |
DC compressor fails to start |
| 19 |
DC compressor out of step |
| 33 |
Room temperature sensor in trouble |
| 34 |
Indoor coil temperature sensor in trouble |
| 35 |
Between wire remote controller and indoor unit communication problem |
| 36 |
Communication between the indoor and outdoor in trouble |
| 37 |
Water overbrimmed the pump |
| 38 |
Indoor EEPROM in trouble |
| 39 |
Indoor fan motor operation abnormal |
| 40 |
Grid protection alarm (cabinet type) |
| 41 |
Detecting failures by zero-crossing |
| F0 |
Wire remote controller EEPROM failure. Change wire remote controller. |
| F1 |
Wire remote controller temperature sensor failure. Change wire remote controller. |
| F2 |
Wire remote controller clock IC failure. Change wire remote controller. |
| F3 |
Wire remote controller humidity sensor failure. Change wire remote controller. |
| FE |
Communication between main control board & Wiring remote controller Fault (display on wiring remote controller). |
| ER |
Communication between main control board & display board Fault. |
| Hitachi |
P01 |
Pressure ratio protection control |
| P02 |
High pressure increase protection |
| P03 |
Inverter current protection |
| P04 |
Inverter fin temperature increase protection |
| P05 |
Discharge gas temperature increase protection at the upper part of the compressor |
| P06 |
Low pressure decrease protection |
| P09 |
High pressure decrease protection |
| P0A |
Demand current protection control |
| P0d |
Low pressure increase protection |
| P11 |
Pressure ratio decrease retry |
| P12 |
Low pressure increase retry |
| P13 |
High pressure increase retry |
| P14 |
Constant speed compressor overcurrent retry |
| P15 |
Discharge gas temperature increase retry / Low pressure decrease retry |
| P16 |
Discharge gas super-heat decrease retry |
| P17 |
Inverter anomaly retry |
| P18 |
Abnormal Inverter voltage retry / Inverter failure retry |
| P26 |
High pressure decrease retry |
| LG |
C1 or CH1 |
Indoor temperature sensor open or closed circuit. |
| C2 or CH2 |
Outdoor temperature sensor open or closed circuit. |
| C4 or CH4 |
Heat sink temperature sensor open or closed circuit. |
| C5 or CH5 |
Communication between indoor and outdoor units. |
| C6 or CH6 |
Excessive current at inverter DC power circuit. |
| C7 or CH7 |
Excessive compressor current |
| C8 or CH8 |
Indoor fan not rotating. |
| C9 or CH9 |
Outdoor fan does not rotate. |
| CA |
1. Discharge temp more than130 °C 2. Faulty discharge thermistor |
| CC |
EEPROM error |
| CD |
Inverter module error |
| Po |
System in Power Mode – not a fault |
| Lo |
System in test mode – not a fault |
| Samsung |
E101 |
Communication Error (Indoor Outdoor) |
| E102 |
Communication Error (Indoor Outdoor) |
| E121 |
ROOMTH sensor error |
| E122 |
INDOOR MID, INDOOR IN PIPE-TH sensor error |
| E154 |
Fan Error (Indoor) |
| E162 |
EEPROM Error (Indoor) |
| E163 |
Option Error |
| E203 |
Time out Comm. (Inv Micom Main Micom) |
| E221 |
OUT-TH(Outdoor Temperature) Sensor Error |
| E231 |
CON-TH(Cond Temperature) Sensor Error |
| E251 |
DIS-TH(Discharge Temperature) Sensor Error |
| E416 |
DIS-TH(Discharge Temperature) Over Error |
| E422 |
EEV or Valve Close error-Self diagnosis |
| E440 |
Prohibit Operation Condition Error (Heating) |
| E441 |
Prohibit Operation Condition Error (Cooling) |
| E458 |
Fan Error(Outdoor) |
| E461 |
Comp Starting Error |
| E462 |
AC Input I_Limit Trip Error |
| E464 |
IPM Over Current(OC) Error |
| E465 |
Comp V_limit/I_limit Error |
| E466 |
DC-Link Voltage Under/Over Error |
| E467 |
Comp Wire Missing Error |
| E468 |
Current Sensor Error |
| E469 |
DC-Link Voltage Sensor Error |
| E470 |
EEPROM Data Error (no data) |
| E471 |
EEPROM Data Error (Main Micom Inv Micom) |
| E474 |
Heatsink Sensor Error |
| E483 |
Over Voltage Protection Error |
| E484 |
PFC Over Load Error |
| E485 |
Input Current Sensor Error |
| E488 |
AC Input Voltage Sensor Error |
| E500 |
Heatsink Over Temperature Error |
| E554 |
Gas leak error |
| Sharp |
EE |
Buttons are locked |
| E0 |
Water pump malfunction |
| E1 |
High pressure protection of compressor |
| E2 |
Indoor anti-frozen of compressor |
| E3 |
Low pressure protection of compressor |
| E4 |
Air discharge high-temperature protection of compressor |
| E5 |
Overload protection of compressor |
| E6 |
Transmit malfunction |
| E8 |
Indoor fan protection |
| E9 |
Water flow protection |
| FF |
Connected control communications Failure |
| F0 |
Malfunction of indoor environment sensor at air return vent |
| F1 |
Evaporator sensor malfunction |
| F2 |
Condenser sensor malfunction |
| F3 |
Outdoor environment sensor malfunction |
| F4 |
Malfunction of air discharge sensor |
| F5 |
Malfunction of environment sensor on displayer |
| ee |
Malfunction of external drive memory chip. Outdoor drive board. |
| H3 |
Compressor over load protection. Compressor overload switch. |
| H4 |
Overload protection. Evaporator temperature, condenser temperature. |
| H6 |
Malfunction of outdoor fan motor. Outdoor fan motor. |
| U7 |
Direction changing malfunction of 4-way valve. |
| P6 |
Communication malfunction between main control and drive. |
| EE |
Malfunction of outdoor main control memory chip. Outdoor main control board. |
| TCL |
E0 |
Indoor/outdoor communication fault |
| EC |
Outdoor communication fault |
| E1 |
Room temperature sensor (IRT) |
| E2 |
Indoor pipe (coil) temperature sensor (IPT) |
| E3 |
Outdoor pipe (coil) temperature sensor (OPT) |
| E4 |
System abnormal |
| E5 |
Model configuration wrong |
| E6 |
Indoor fan motor fault |
| E7 |
Outdoor temperature sensor |
| E8 |
Exhaust temperature sensor |
| E9 |
Intelligent power module of drive and module fault |
| EF |
Outdoor fan motor fault (DC Motor) |
| EA |
Current sensor fault |
| EE |
EEPROM fault |
| EP |
Temperature switch fault (on top of the compressor) |
| EU |
Voltage sensor fault |
| E.H |
Intake temperature sensor |
| P1 |
Overvoltage / undervoltage protection |
| P2 |
Overcurrent protection |
| P4 |
Exhaust overtemperature protection |
| P5 |
Subcooling protection under cooling mode |
| P6 |
Overheating protection under cooling mode |
| P7 |
Overheating protection under heating mode |
| P8 |
Outdoor overtemperature / undertemperature protection |
| P9 |
Drive protection (software control) |
| P0 |
Module protection (hardware control) |
| Toshiba |
E01 |
No communication between remote controller and indoor unit. |
| E02 |
Local controller failure - unable to transmit |
| E03 |
Master indoor unit receives no data to AB |
| E04 |
Indoor unit (except twin slave) receives no communications from outdoor unit; can also include klixon on discharge pipe of outdoor unit |
| E08 |
Duplicated indoor unit address |
| E09 |
2 local controllers connected on a group - both configured as masters |
| E10 |
Indoor unit PSB failure |
| E18 |
Communications failure between master indoor unit and slave indoor unit or units |
| F01 |
Indoor unit TCJ (Liquid) sensor error (Open or Closed circuit - resistance is measured in kΩ |
| F02 |
Indoor unit TC2 (Vapour) sesnor error (Open or Closed circuit - resistance is measured in kΩ |
| F04 |
Outdoor unit TD (Discharge) senor error (Open or Closed circuit - resistance is measured in kΩ |
| F06 |
Outdoor unit TE (Coil) sesnor error (Open or Closed circuit - resistance is emasured in kΩ |
| F08 |
Outdoor unit TO (Ambient) sensor error (Open or Closed circuit - resistance is measured in kΩ |
| F10 |
Indoor unit TA (Return Air) sesnor error )Open or Closed circuit - resistance is measured in kΩ |
| F29 |
Indoor unit PCB failure |
| H01 |
Outdoor unit inverter compressor over current detected |
| H02 |
Master outdoor unit over current detected shortly after start up |
| H03 |
Current detected on Master outdoor unit whilst idle |
| H06 |
Outdoor unit Low pressure detected by Ps sensor (0.2 bar -n 2.9 psig) |
| L03 |
Indoor unit Duplicated master indoor units in a group |
| L07 |
Indoor unit in a group of units previously addressed as a single unit - check addressing |
| L08 |
Indoor units addresses not set - check addressing |
| L09 |
Indoor units capacity not set (check DN Code 11) |
| L29 |
Outdoor unit IPDU error (Number of detected IPDU units is reduced) |
| L30 |
Input on indoor PCB CN80 circuit for 1 minute |
| L31 |
Outdoor unit PCB error |
| P01 |
Indoor unit fan motor error |
| P03 |
Outdoor unit High discharge temperature (TD1 exceeded 115°C) |
| P04 |
Outdoor unit High pressure switch activated (Detected by high temperature on TE sensor on digital/super digital inverter units) |
| P07 |
Outdoor unit PCB heat sink overheated (Temperature over 90°C recorded) |
| P10 |
Indoor unit Float switch activated |
| P12 |
Indoor unit fan motor error - detected by feedback circuit |
| P19 |
Wrong change in temperature recorded (4 way valve error) |
| P22 |
Outdoor unit fan motor IPDU error |
| P26 |
Outdoor unit Giant transistor short circuit |
| P29 |
Outdoor unit Compressor error detected by feedback circuit |
| P30 |
Indoor unit Group control follower unit error / duplicated central control addresses |
| P31 |
Indoor unit PCB error |
| C05 |
Central control Sending error in TCC-Link central control device |
| C06 |
Central control Receive error in TCC-Link central control device |
| C12 |
Batch alarm for general purpose equipment interface |
| Westinghouse
|
E0 |
Indoor unit EEPROM parameter error. |
| E1 |
Indoor/outdoor units communication error. |
| E2 |
Zero-crossing signal detection error. |
| E3 |
Indoor fan speed has been out of control. |
| E4 |
Open circuit or short circuit of indoor room temperature T1 sensor. |
| E5 |
Open circuit or short circuit of evaporator coil temperature T2 sensor |
| EC |
Refrigerant Leakage Detection |
| F1 |
Open circuit or short circuit of outdoor ambient T4 temperature sensor |
| F2 |
Open circuit or short circuit of condenser coil temperature T3 sensor |
| F3 |
Open circuit or short circuit of compressor discharge T5 temperature sensor |
| F4 |
Outdoor unit EEPROM parameter error |
| P0 |
IPM malfunction or IGBT over-strong current protection |
| P1 |
Over voltage or over low voltage protection |
| P2 |
High temperature protection of compressor top diagnosis and solution |
| P4 |
Inverter compressor drive error |
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