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Kaysun Aquantia PRO Monobloc - KHP-MO Manual

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64
ERROR
CODE
MALFUNCTION
OR PROTECTION
FAILURE CAUSE
AND CORRECTIVE ACTION
Communication fault between
main control board of hydraulic
module and main control board
PCB B.
1.wire doesn’t connect between main control board PCB B and main
control board of indoor unit. connect the wire.
2. 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 fault 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 inverter module 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 inverter module
PCB and main control board 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.
The plate exchanger refrigerant
outlet (liquid pipe) temp. sensor
(T2) fault.
The plate exchanger refrigerant
outlet (liquid pipe) temp. sensor
(T2) fault.
1.Check the resistance of the sensor
2.The T2 sensor connector is loosen. Re connect it.
3.The T2 sensor connector is wet or there is water in. remove the
water, make the connector dry. Add waterproof adhesive
4. The T2 sensor failure, change a new sensor.
The plate exchanger refrigerant
outlet (gas pipe) temp. sensor
(T2B) fault.
temp.sensor(T2B) fault
1.Check the resistance of the sensor
2. The T2B sensor connector is loosen. Reconnect it.
3.The T2B sensor connector is wet or there is water in. remove the
water, make the connector dry. Add waterproof adhesive
4. The T2B sensor failure, change a new sensor.
Three times P6 protection Same to P6
Room temp.sensor (Ta) fault
1.Check the resistance of the sensor
2. The Ta senor is in the interface;
3. The Ta sensor failure， change a new sensor or change a new
interface, or reset the Ta, connect a new Ta from the indoor unit PCB
DC fan motor fault.
1. Strong wind or typhoon below toward to the fan, to make the fan
running in the opposite direction. Change the unit direction or make
shelter to avoid typhoon below to the fan.
2.fan motor is broken, change a new fan motor.
Main circuit voltage protection
fault.
1. Whether the power supply input is in the available range.
2. Power off and power on for several times rapidly in short time.
Remain the unit power off for more than
3 minutes than power on.
4. the circuit defect part of Main control board is defective. Replace a
new Main PCB.
Pressure sensor fault.
1. Pressure sensor connector is loosen, reconnect it.
2. Pressure sensor failure. change a new sensor.
… 68 …


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