Ferroli OMNIA ST 3.2 Manual De Instalación, Uso Y Mantenimiento página 125

OMNIA ST 3.2
Error code Malfunction or protection
Communication fault between indoor unit
and outdoor unit
H0
Communication error between inverter mo-
dule PCB A and main control board PCB B
H1
Refrigerant liquid temp. probe(T2) fault
H2
Refrigerant gas temp. probe(T2B) fault
H3
H4
Three times P6 protect
Room temp. probe(Ta) fault
H5
The DC fan failure
H6
Voltage protection
H7
Pressure sensor failure
H8
Outlet water for zone 2 temp. probe (Tw2)
fault
H9
Fault of the outlet water temp. probe (Tw_
out)
HA
Three times "PP" protection and Tw_out<
Hb
7°C
Communication fault between hydronic bo-
ards (for cascade application)
Hd
Communlcation error between main board
and thermostat transfer board
HE
Inverter module board EE prom failure
HF
HH
H6 displayed 10 times in 2 hours
Failure causeand corrective action
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 Replace a new wire.
3. Replace a new main PCB and driven board in turn.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
Refer to P6
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1. Strong wind blow 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, Replace it with 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.
3. 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. Replace it with a new sensor.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
Refer to "PP".
1.The signalwires of slave units and master unit are not effactively connected. After checking ali signalwires are
well connected,and making sure there is no strong electricity or strong magnetic interference, power on again;
2.There are two or more units connected to the wired controllar. After removing the excess wired controllar and
keep only the wired controllar of the master unit, power on again;
3.The power-on interval between the master unit and the slave unit is longer than 2min. After ensuring that the
interval between the power-on of ali the master units and slave units is less than 2min, power on again;
4.The addresses of master unit and slave units are repeated:
by pressing the SW2 button on main board once on slave units, the address code of the slave unit will be
displayed on the digitaitube (Normally address code, one of 1, 2, 3 ... 15 will be shown on main board), check
whether there is a duplicate address. lf there is a duplicate address code, after powering off the system,set the
S4-1 to "ON"on master outdoor unit main board or the salve outdoor unit main board which display "Hd" error.
Power on again,all the units last for 5 minutes without "Hd" error, power off again and set the S4-1to "OFF".
The system will recover.
RT/Ta PCB ls setto be valld on user lnterfaoe but thermostat
transfer board is not connected or the communication between thermostat transfer board and main board is
not effectively connected.lf thermostat transfer board is not needed, set the RTfTa PCB to invalid. lf thermostat
transter board is needed,
please connect it to main board and make sure the communication wire is connected well and there is no strong
electricity or strong magnetic interference.
1. The EEprom is in error, please rewrite the data on the EEprom.
2. The EEprom is broken, replace it with a new one.
3. The inverter module board is broken, replace it with a new one.
Refer to H6
Cod. 3541V991 - Rev. 00 - 09/2021
125
EN