Ferroli OMNIA H 04E, Installation, Maintenance And User Manual

Page: 66 / 72

66
ERROR CODE AND TROUBLESHOOTING
ED
Tw_in probe error
(evaporator water inlet)
1. Check the electrical connection (reset if incorrect).
2. The probe is faulty, replace the probe.
3. Replace the hydronic module control board.
Th intervention <15 ° C for 15 min, automatic reset Th> 27 ° C
EE
Eprom error hydronic module
control board
1. Replace the faulty card.
H0
Communication error between
PCB board and idronic control
board
1.wire doesn’t connect between indoor unit and outdoor unit. 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.
H1
Communication error between
PCB A and 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.
H2
The plate heat exchanger
refrigerant inlet (liquid pipe)
temperature sensor(T2) error.
1.The T2 sensor connector is loosen. Re connect it.
2.The T2 sensor connector is wet or there is water in. Remove the water, make the
connector dry. Add waterproof adhesive
3. The T2 sensor failure, change a new sensor.
H3
The plate heat exchanger refri-
gerant outlet (gas pipe) tempe-
rature sensor (T2B ) error.
1. The T2B sensor connector is loosen. Re connect it.
2.The T2B sensor connector is wet or there is water in. Remove the water, make the
connector dry. Add waterproof adhesive
3. The T2B sensor failure, change a new sensor.
H4 Three times P6 protect
Same to P6
H5
The indoor temperature
sensor(Ta) error
1. The Ta senor is in the interface;
2. The Ta sensor failure change a new sensor or change a new interface.
H6 The DC fan failure
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.
H7
Main supply voltage circuit
voltage out of limits
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.
H8 Pressure sensor failure Pe
1. Pressure sensor connector is loosen, reconnect it.
2. Pressure sensor failure. change a new sensor.
H9
The system outlet water tempe-
rature sensor T1B failure.
1. The T1B sensor connector is loosen. Reconnect it.
2.The T1B sensor connector is wet or there is water in. remove the water, make the
connector dry. add waterproof adhesive
3. The T1B sensor failure, change a new sensor.
HA
The plate heat exchanger water
outlet temperature sensor
(Twout) error
1. The Twout sensor connector is loosen. Reconnect it.
2.The Twout sensor connector is wet or there is water in. remove the water, make the
connector dry. add waterproof adhesive
3. The Twout sensor failure, change a new sensor.
HE
The condenser refrigerant
outlet temperature is too high in
heating mode for more than 10
minutes.
The outside outdoor air temperature is too high(higher than 30°C , the unit still ope-
rate heat mode. close the heat mode when the outdoor air temperature is higher than
30°C
HF PCB B EEprom failure
1. The EEprom parameter is error, rewrite the EEprom data.
2. EEprom chip part is broken, change a new EEprom chip part.
3. Main PCB is broken, change a new PCB.
HH
H6 displayed 10 times in 2
hours
Refer to H6