Skip to content

Error code checklist

Error CODE

Fault description

Analyzing conditions

Solution

CF01

Loss of communication between control panel and electronic control box

Check whether the power supply of the control panel and the electric control box is normal;

Check whether the CAN line connection between the panel and the electric control box is in good condition;

CF02

Loss of communication between compressor and electric control box

Check whether the power supply of the compressor and the electric control box is normal;

Check whether the CAN cable connection between the compressor and the electric control box is in good condition;

CF03

Loss of control panel and vehicle communication

Check whether the power supply of the control panel is normal;

Check whether the CAN line connection between the panel and the vehicle is in good condition;

OPE1

Return air temperature sensor open circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

SHr1

Return air temperature sensor short circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

OPE2

Defrost temperature sensor open circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

SHr2

Defrost temperature sensor short circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

OPE3

Exhaust temperature sensor open circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

SHr3

Exhaust temperature sensor short circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

OPE4

Outdoor temperature sensor open circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

SHr4

Outdoor temperature sensor short circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

OPE5

Suction temperature sensor open circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

SHr5

Suction temperature sensor short circuit

Check that the sensor connection is intact;

If the sensor fails, it needs to be replaced with a sensor of the same specification;

HUEr

Power supply voltage is too high

12V system: the voltage is greater than 16V

24V system: voltage greater than 36V

Use a multimeter to measure whether the power supply voltage is normal

LUEr

Power supply voltage is too low

12V system: voltage less than 10V

24V system: voltage less than 19V

Use a multimeter to measure whether the power supply voltage is normal

HPEr

high pressure fault

System pressure>3.5MPa

Check the system pressure, if the pressure is abnormal, further check whether the system pipeline is dirty and leaking;

If the pressure is normal, the corresponding pressure switch needs to be replaced (at the same time, it should be noted that the failure of the condensing fan will lead to high pressure failure, and the failure of the evaporative fan will cause low pressure failure);

LPEr

low pressure fault

System pressure<0.01MPa

Check the system pressure, if the pressure is abnormal, further check whether the system pipeline is dirty and leaking;

If the pressure is normal, the corresponding pressure switch needs to be replaced (at the same time, it should be noted that the failure of the condensing fan will lead to high pressure failure, and the failure of the evaporative fan will cause low pressure failure);

PEr1

Pressure sensor failure


Check if the pressure sensor is normal

FU01

Damaged compressor fuse


Check whether the corresponding fuse inside the electric control box is damaged and replace it

FU02

Damaged condensing fan fuse

Check whether the corresponding fuse inside the electric control box is damaged and replace it

FU03

Evaporative fan insurance damaged

Check whether the corresponding fuse inside the electric control box is damaged and replace it

FU04

Defrost solenoid valve fuse damaged

Check whether the corresponding fuse inside the electric control box is damaged and replace it

FU05

Injection valve fuse damaged

Check whether the corresponding fuse inside the electric control box is damaged and replace it

CUEr

Precharge failure failure

Check whether the pre-charged module is normal

dUEr

High voltage voltage instability fault

Check whether the high voltage power supply is normal

Contact engineer