Ferroli OMNIA M 3.2 22T Manual De Instalación Y Del Propietario página 145

OMNIA M 3.2
ERROR MALFUNCTION OR
CODE PROTECTION
Communication fault between
main control board of
hydraulic module and main
control board PCB B.
Communication fault between
inverter module PCB A and
main control board PCB B.
The plate exchanger
refrigerant outlet (liquid pipe)
temp, sensor (T2) fault.
The plate exchanger
refrigerant outlet (gas pipe)
temp, sensor (T2B) fault.
Three times P6 protection
Room temp.sensor (Ta) fault
DC fan motor fault.
Main circuit voltage protection
fault.
Pressure sensor fault.
22T÷30T
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.
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.
1. Check the resistance of the sensor
2. The T2 sensor connector is loosen. Reconnect 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.
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.
Same to P6
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
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.
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.
1. Pressure sensor connector is loosen, reconnect it.
2. Pressure sensor failure, change a new sensor.
Cod. 3QE47660 - Rev. 00 - 02/2022
FAILURE CAUSE AND CORRECTIVE ACTION
145
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