Kaysun Aquantia KHPMS-BI Series, Installation & Owner'S Manual

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13.8 Error codes

When a safety device is activated, an error code will be displayed on the user interface.
A list of all errors and corrective actions can be found in the table below.
Reset the safety by turning the unit OFF and back ON.
In case this procedure for resetting the safety is not successful, contact your local dealer.

ERROR 

CODE

MALFUNCTION 

OR PROTECTION

FAILURE CAUSE 

AND CORRECTIVE ACTION

The condenser outlet refrigerant 

temperature sensor (T3)error.

1. The  T3 sensor connector is loosen. Reconnect it. 

2.The T3 sensor connector is wet or there is water in. remove the 

water, make the connector dry. Add waterproof adhesive 

3. The T3 sensor failure, change a new sensor. 

The ambient temperature 

sensor (T4) error.

1. The  T4 sensor connector is loosen. Reconnect it. 

2.The T4 sensor connector is wet or there is water in. remove the 

water, make the connector dry. Add waterproof adhesive 

3. The  T4 sensor failure, change a new sensor.

Suction temperature sensor(Th) 

error

1. The Th sensor connector is loosen. Re connect it. 

2.The Th sensor connector is wet or there is water in. remove the 

water, make the connector dry. Add waterproof adhesive 

3. The Th sensor failure, change a new sensor.

Discharge temperature 

sensor(Tp) error

1. The Tp sensor connector is loosen. Re connect it. 

2.The Tp sensor connector is wet or there is water in. remove the 

water, make the connector dry. Add waterproof adhesive 

3. The Tp sensor failure, change a new sensor.

Communication error between 

main control board PCB B and 

main control board of hydraulic 

module

1.wire doesn’t connect between main control board PCB B and 

main control board of hydraulic module. connect the wire. 

2.Communication wire sequence is not right. Reconnect the wire in 

the right sequence. 

3. Whether there is a high magnetic field or high power interfere, 

such as lifts, large power transformers, etc.. To add a barrier to 

protect the unit or to move the unit to the other place.

Communication error between 

inverter module PCB A and 

main control board PCB B

1. Whether there is power connected to the PCB and driven board. 

Check the PCB indicator light is on or off. If Light is off, reconnect 

the power supply wire.

2.if light is on, check the wire connection between the main PCB 

and driven PCB, if the wire loosen or broken, reconnect the wire or 

change a new wire.

3. Replace a new main PCB and driven board in turn. 

Three times P6 protect

Same to P6