Error code table on Aqua air conditioners: Causes and solutions

Provide causes and solutions of errors on Aqua air conditioners, error codes on Aqua Inverter air conditioners, error codes on regular Aqua air conditioners. Click here to check it out!

AQUA is a line of air conditioners that is no longer strange to many users. However, after a period of use, the air conditioner will appear a few errors that make you feel quite uncomfortable and worried. Don't worry, the following article will provide you with information about the cause and instructions on how to fix the errors on the AQUA air conditioner line. Let's see together.

1. Causes of errors on AQUA . air conditioners

AQUA air conditioner is short of gas or out of gas.
The indoor unit or outdoor unit of the machine is too dirty to prevent the machine from dissipating heat.
Damaged outdoor unit fan or damaged indoor unit fan, also known as dead fan.
The power cord, signal wire of the air conditioner is broken or flickered.
The cause comes from the failure of the outdoor unit, the block does not run, the block eats the current.
The air conditioner is damp or the main circuit is damaged causing the error.
Damage to the outdoor unit or indoor unit sensor prevents the unit from measuring the temperature.
Maybe you have used the wrong remote control, used the wrong function, wrong mode, causing the machine to have an error.
Slow machine rewind speed, prolonged standby or too early can also cause errors.
The machine appeared error due to failure of pressure valve, failure of one-way valve.

Error code table on Aqua air conditioners: Causes and solutions Picture 1 Error code table on Aqua air conditioners: Causes and solutions Picture 1

Some causes of Aqua air conditioner failure

2. Error code on AQUA Inverter air conditioner series

System damage

Error code: E7.

This error code is known as a connection error between the outdoor unit and the indoor unit.

The cause of error E7 is due to loose connection of the compressor's wire, damaged control circuit or damage to the indoor unit.

Damaged indoor unit

Error code	Error description	Reason
E1	The room temperature sensor is faulty.	The temperature sensor connection is loose. The temperature sensor is damaged. The indoor unit control circuit is broken.
E2	The heat exchanger sensor is faulty.	The temperature sensor connection is loose. The temperature sensor is damaged. The indoor unit control circuit is broken.
E4	Control circuit error.	The indoor unit control circuit is broken.
E14	The indoor unit fan motor is faulty.	The fan motor coil is broken. Protect fan motor from overheating. The wire connecting the fan motor is broken. The indoor unit control circuit is broken.

Damaged outdoor unit

Error code	Error description	Reason
F1	Module circuit error.	The module circuit is damaged.
F2	Compressor is overcurrent.	Compressor is damaged. The module circuit is damaged.
F3	Connection error of the module circuit and the main control circuit of the line array.	The connection between the main control circuit and the module circuit is loose. The main control circuit of the outdoor unit is broken. The main unit module circuit is loose.
F4	Output overheat protection.	Electronic throttle valve is damaged. The temperature sensor is damaged. The main control circuit of the outdoor unit is broken.
F6	Ambient temperature sensor error.	The temperature sensor is damaged.
F7	Input temperature sensor error.	The temperature sensor is damaged.
F8	The outdoor unit fan motor is faulty.	The outdoor unit fan motor coil is broken. The power cord connecting the motor wire is broken. The main control circuit of the outdoor unit is broken.
F11	Compressor error.	Compressor is damaged.
F12	Error in the main control circuit of the outdoor unit.	The main control circuit of the outdoor unit is broken.
F18	The supply voltage is too high or too low.	The power supply is not stable. The main control circuit of the outdoor unit is broken. The main unit module circuit is loose.
F21	Defrost temperature sensor error. (Only in two-way air conditioners).	The temperature sensor connection is broken. The temperature sensor is damaged. The main control circuit of the outdoor unit is broken.
F25	Output temperature sensor error.	The temperature sensor is damaged.

3. Error code on regular AQUA air conditioners

Below is a table of error codes on the Aqua series usually for you:

Error code	Error description	Reason
F1	The temperature sensor in the room is faulty.	Sensor open circuit or short circuit. Connection failure at connection/open circuit at fold position. The connection board is broken.
F2	The indoor unit exchanger sensor is faulty.	Compressor is damaged. The module circuit is damaged.
H1	In the state of defrosting (for 2-way machines).	This is normal operation, 'H1' will not be displayed after defrosting is finished.
H6	The indoor unit motor is faulty.	The fan motor is damaged. This situation occurs when the fan motor runs too slowly, to avoid activating the motor self-protection mode, the machine will stop and display the lock. Poor connection of local contacts.
C5	The OTP box is faulty.	The PCB cover is damaged. PCB is damaged.

4. Other error codes on Aqua air conditioner

You can also refer to other error codes on Aqua air conditioners in the table below:

Error code	Error description	Reason
E5	Serial communication signal reception is faulty.	Circuit is damaged.
E6	Serial communication signal transmission error.	Circuit is damaged.
E7	The indoor unit power is too low.	Dirty indoor unit, lack of capacity.
E8	Indoor unit address setting is mirrored.	Circuit is damaged.
E9	The remote controller setup is mirrored.	Circuit is damaged.
E10	Serial communication signal transmission error.	Circuit is damaged.
E11	Duplicate main unit concurrent multi control action.	Circuit is damaged. Controller is faulty.
E15	Indoor unit power too high	The machine temperature is high.
E16	There are no connected units in the house.	There is a problem with the power cord connection.
E17	Serial communication signal reception is faulty.	Circuit is damaged.
E18	Communication failed with main module.	There is a problem with the power cord connection.
E20	Serial communication signal transmission error.	Circuit is damaged.
E31	Setting the indoor unit group Aqua air conditioner reported an error.	Circuit is damaged.
F12	Aqua air conditioner reports EEPROM error in the house.	Circuit is damaged.
F28	Outdoor EEPROM error.	Circuit is damaged.
F29	Outdoor EEPROM error.	Circuit is damaged.
F31	Outdoor EEPROM error.	Circuit is damaged.
P01	Float conversion failed.	Circuit is damaged.
P03	Open phase detection, AC power trouble.	There is a problem with the power cord connection.
P10	Discharge temperature is faulty.	The temperature is too low or too high.
P15	The 4-way valve is locked.	The 4-way valve is locked.
P19	High cooling load.	Poor radiator.
P20	The outdoor fan has a problem.	The outdoor unit fan is damaged.
P22	Compressor has problem (HIC PCB).	The machine block is broken.
P26	Trouble from the compressor (MDC).	The machine block is broken.
P29	Simultaneous effect multi-control trouble.	Circuit is damaged.
P31	Compressed air overload.	The machine block is broken. Engine valve is damaged.
L01	Indoor/outdoor style units are not suitable.	Circuit is damaged.
L02	Duplicate units in the control group.	Circuit is damaged.
L03	The outdoor unit address is copied.	Circuit is damaged.
L04	Group of connection wires for independent indoor units.	There is a problem with the power cord connection.
L07	Address not set or group not set.	Circuit is damaged.
L08	The indoor unit capacity is not set.	The indoor unit control circuit is broken.
L09	Outdoor power unit not set or set.	The connection between the main control circuit and the module circuit is loose. The main control circuit of the outdoor unit is broken.
L11	Indoor unit installation error.	The control circuit is broken.
L13	Connection failed.	Circuit is damaged.

5. How to fix errors on Aqua air conditioners

When your air conditioner encounters the errors listed above, you should contact the service center so that it can be repaired as soon as possible.

Error code table on Aqua air conditioners: Causes and solutions Picture 2 Error code table on Aqua air conditioners: Causes and solutions Picture 2