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ERROR
MALFUNCTION OR
CODE
PROTECTION
The balance tank low temp.
sensor (Tbt2) fault
The plate exchanger water
Inlet temp, sensor (Tw_in)
fault.
The main control board of
hydraulic module EEPROM
fault.
PED PCB fault
High temp, protection of
inverter module
DC bus low voltage protection
144
EN
OMNIA M 3.2
FAILURE CAUSE AND CORRECTIVE ACTION
1. Check the resistance of the sensor.
2. The Tbt12 sensor connector is loosen, reconnect it.
3. The Tbt2 sensor connector is wet or there is water in, remove the water,
make the connector dry. Add waterproof adhesive.
4. The Tbt2 sensor failure, change a new sensor.
1. Check the resistance of the sensor.
2. The Tw_in sensor connector is loosen. Reconnect it.
3. The Tw_in sensor connector is wet or there is water in.
remove the water, make the connector dry. Add waterproof adhesive
4. The Tw_in sensor failure, change a new sensor.
1. The EEprom parameter is error, rewrite the EEprom data.
2. EEprom chip part is broken, change a new EEprom chip part.
3. main control board of hydraulic module is broken, change a new PCB.
1. After 5 minutes of power-off interval, power on again and observe whether
it can be recovered;
2. If it can't be restored, replace PED safety plate, power on again, and
observe whether it can be restored;
3. If it can not be recovered, the IPM module board should be replaced.
1. Power supply voltage of the unit is low, increase the power voltage to the
required range.
2. The space between the units is too narrow for heat exchange. Increase
the space between the units.
3. Heat exchanger is dirty or something is block on the surface. Clean the
heat exchanger or remove the obstruction.
4. Fan is not running. Fan motor or fan is broken, Change a new fan or fan
motor.
5. Water flow rate is low, there is air in system, or pump head is not enough.
Release the air and reselect the pump.
6. Water outlet temp.sensor is loosen or broken, reconnect it or change a
new one.
1. Check the power supply.
2. If the power supply is
, and check if LED light is
PN, if it is 380V, the problem usually comes from the main board. And if the
light is OFF, disconnect the power, check the IGBT, check those dioxides, if
the voltage is not correct, the inverter board is damaged, change it.
3. And if those IGBT are
, which means the inverter board is
form rectifier bridge is not correct, check the bridge. (Same method as IGBT,
disconnect the power, check those dioxides are damaged or not).
4. Usually if F1 exist when compressor start, the possible reason is main
board. If F1 exist when fan start, it may be because of inverter board.
Cod. 3QE47660 - Rev. 00 - 02/2022
22T÷30T
, check the voltage
, power
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